Monthly Archives: February 2012

Shenmu Chemical 600 000 tons year methanol production and product quality controls

Posted on February 29, 2012 by admin

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automatic brick machine – China Manufacturer
Thank you for inquiry my automatic brick machine, Tel:86-0371-63431169 E-MAIL:sales@machinezy.com
http://www.crusherzy.com/key-automatic-brick-making-machine-96/

One, the device profile

    Shenmu Chemical annual output of 600,000 tons of methanol project consists of two sets of production equipment, and construction phases to complete. An annual output of 200,000 tons of methanol plant started construction in 2003 and put into operation in October 2005; two annual output of 400,000 tons of methanol plant started construction in 2006, put into operation in August 2008. Two sets of devices by the the Tianchen Design Institute of China Lu engineering design.

Second, the process configuration and process indicators

(1) gas

    The two units are used to Texaco coal-slurry gasification process. The principle is the CWS gasification agent (oxygen) through the process burners mounted on the top of the gasifier is injected into the high temperature gasifier rapid gasification reaction product of crude gas, crude gas is excited by the gasifier cold chamber, the carbon scrubber wash cool (<215 ° C) and sent to the transformation process.

Run the process indicators:

Gasifier operating pressure of 3.8MPa the gasifier operating temperature of 1350 ° C

The synthesis gas composition% (v / v)

Of CO 44.6 O2 + Ar 0.12

H2, 34.9 N2 0.8

Of CO2 19.4 of H2S 0.11

Of CH4 0.07

Residual carbon residue% (m / m) 30.2

Carbon conversion rate%> 95

Cold gas efficiency> 71

(2) gas purification

    Crude gas at high temperature sulfur-tolerant transformation processes, recycling waste heat and some water, according to the requirements of the synthesis of fresh gas hydrogen to carbon ratio (Best of hydrogen to carbon ratio = (H2-CO2) / (CO + of CO2) = 2.05 to 2.15), part of the carbon monoxide by changing the furnace is converted into hydrogen and carbon dioxide. Transform the gas contains a large number of acidic gases such as carbon dioxide, hydrogen sulfide, methanol synthesis harmful or unwanted removal in the purification process.

    An annual output of 200,000 tons of methanol plant gas purification of homes in South NHD desulfurization and decarbonization process, post-high-temperature organic sulfur hydrolysis, activated carbon to dry flue gas desulphurization, the purified gas controlled sulfur content of <0.1ppm, CO2, ≤ 3.5%, purification gas to meet the requirements of gas for methanol synthesis.

    Two annual output of 400,000 tons of methanol plant gas purification Dalian University of Technology Rectisol process, the the Rectisol process is the physical absorption method using cold methanol as a solvent for removing acid gas, at low temperatures, methanol of CO2, H2S, high solubility of COS pressure of 3.1 MPa, 1M3 methanol solution can absorb 160 ~ 180 the M3 CO2, and 1 M3 Application of NHD solvent can only absorb 40 to 55 of the M3 of CO2, absorb the same amount of acid gas, the cycle of low-temperature methanol solution a small amount of total energy consumption of the device is low, the economics of the NHD process. Control by the low temperature methanol wash desulfurization and decarbonization of the purified gas indicators: the total sulfur content control <0.1ppm of CO2 ≤ 3.0%.
3 Methanol Synthesis

    The two sets of synthetic devices are used the gas low-pressure methanol synthesis technology, synthetic tower using the patented technology of the East China University of adiabatic temperature methanol synthesis reactor. Catalytic South homes C307 methanol synthesis catalyst. (The main component of copper, zinc, aluminum oxide, which contains of CuO 54% ~ 60% of ZnO 20% ~ 30% A12O3, 5% ~ 10% H2O, 3% to 6%).

    Control for the operation indicators: operating temperature of 210 ~ 270 ℃, the operating pressure of 5.6 MPa, space velocity of 8000 12000h-1 fresh gas H / C 2.05 ~ 2.15, the synthetic tower inlet gas H / C, 5.4 ~ 6.0, the crude methanol purity ≥ 94%.

4 Northern distillation

    Construction section of the distillation of the two sets of devices are used the process of Distillation Technology Research Center in Tianjin University, plus a tower, pre-towers, pressure tower and atmospheric tower stripping column (recovery column), the product of high purity methanol content up to 99.85%, the product quality to meet the U.S. Federal Grade AA standards and GB338-2004 standard.

Third, the quality control

A crude methanol Quality Control

    Methanol synthesis, in addition to methanol and water, but also generate many trace organic impurities, such as formic acid methyl ester, formic acid, acetate, acetone, methyl ethyl ketone, dimethyl ether, such as ethanol. The formation of these impurities, and the methanol synthesis process conditions. Such as reaction temperature, pressure, space velocity, catalyst, the reaction gas composition anomalies as well as trace impurities such as catalyst role, can make the synthesis reaction in the direction away from the main reaction, while the increase in the impurity content of methanol. The crude methanol poor quality directly affect the distillation section in the load, thereby affecting the quality of refined methanol product.

    ① methanol synthesis temperature control: methanol synthesis temperature is too high, higher alcohols and hydrocarbon by-products will increase; low synthesis temperature, multi-paraffin wax and other by-products. The optimum reaction temperature was controlled at 220 ~ 250 ℃.

    ② control in a vicious cycle gas containing alcohol the amount of gas into the tower containing the lower alcohol content (control <0.41%), more favorable to the methanol synthesis reaction, and also avoid the higher alcohols and other byproducts.

    The ③ catalyst aging powder and catalyst powder and crude methanol plumbing purge, cleaning does not clean the remnants of mechanical impurities with the crude methanol into the distillation section, the evaporation residues and chroma.

(2) the quality of refined methanol control

    The purpose of the methanol distillation process is the removal of organic impurities in the crude methanol and soluble gas, reduce water and standard product were obtained.

    The ① distillation equipment and pipelines, tank overhaul to purge, clean, or the remnants of the mechanical impurities will lead to excessive evaporation residue products, the appearance of the product failure.

    ② pre-tower distillation quality control

    Pre-distillation column removal of crude methanol to dimethyl ether, formic acid methyl ester and other light distillate boiling point lower as the representative of impurities and residual crude methanol dissolved gases (CO, H2,, N2, etc.). Strict control of the pre-the Tata reactor temperature, the top temperature, put the air condensing temperature within a certain range to ensure that the extraction of water, in order to ensure the removal of light components. If the pre-tower operation is not good, poor removal of light components, will lead to the main distillation column recovery products a number of indicators failed. The alkanes excessive light components will lead to water-soluble products and chroma failed; excessive light components will lead to reducing impurities in the product oxide, the value of failure.

    Quality control of the of ③ main distillation column (pressurized tower and atmospheric tower)

    The main distillation column is mainly removal of heavy distillates of high boiling point impurities in the crude methanol product recovery depends mainly on the pressure tower and atmospheric tower, in order to prevent excessive product water content, the need for strict control of the temperature index and the reflux ratio (plus pressure tower reflux ratio of 2.0 to 3.0; atmospheric tower reflux ratio of 1.5 to 2.0), especially the control of reflux ratio, reflux ratio is small, will result in the reorganization of points on the move, can easily result in excessive product moisture. In addition, the design of the atmospheric tower feed location of the mouth to the right, the rectifying section to have enough space; the lateral line of the tower in central mining is an important means to guarantee the compliance of the product ethanol content (ethanol density is 0.7893g/cm3, boiling point 78.4 ℃).

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Elastic hard sealing butterfly valve use and proper use

Posted on February 29, 2012 by admin

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brass ball valves – China Manufacturer
Thank you for inquiry my brass ball valves, Tel: 0086-21-57609959, E-mail: sales@nf-valve.net
http://www.nf-valve.net/Ball-Valves/

First, an overview
With the development of China s infrastructure, the national investment in large-scale projects construction and implementation of an increasing number of electricity, petroleum, chemical

industry, urban water supply, drainage system valves, especially the amount of the butterfly valve. China s production of hard metal sealing butterfly valve, the sealing structure can be

divided into two major categories, elastic hard seal structure is a multi-level hard seal butterfly. Flexible hard sealing butterfly valve production caliber generally DN500 following the

use of large diameter multi-level structure. DN500 butterfly valves below the amount of the problems encountered by users in the use of it more than this, often the problems are summarized,

and guide the proper installation and use
Second, the elastic structural analysis and problem
The elastic structure hard sealing butterfly valve body, valve plate, valve stem, resilient seat, pressure ring main parts.
Pressure the structure and function of the ring: the pressure side of the ring as the sealing surface and the pipe flange sealing surface of the valve body seal pair, and the bolt hole in

the side of the bolt compression pressure of the ring since the use of the fixed seat, at the same time with the valve body even as a whole, constitute the total length of the structure of

the valve.
Effective sealing surface, the pressure ring side screw aperture diameter is reduced. From the user flange, mostly with welded flange, its Neijing nominal diameter 10 ~ 20mm. This will

effectively seal the surface to reduce, if the installation process valves and pipe flange pressure in the bolt aperture above the heart, they would dislocation At this point, the pipe

flange hole medial to expose the bolt aperture, resulting in here leak. Leakage characteristics as a medium outflow from the back of the pressure ring.
Third, the special flange
Across the country can buy into the Shanghai the Hutai valve flange butterfly valve, we provide 24 hours of after-sales service and technical support, if necessary, they can always call our

customer service hotline :4000-700 668 may also directly contact the customer service representative or engineer , please visit the company website: www.shhtbf.com
Currently, the state of elastic hard sealing butterfly valve flange corresponding application-specific standard under the national standard in the case of the flange standard size unchanged,

its by the socket type. The flange diameter and nominal pass through basically the same, so in order to increase the effective sealing surface, but also to the installation to provide a

favorable convenient and normal use, while ensuring that the valve.
At this point, alert the user to the use of elastic hard sealing butterfly valve, anti-paired flange must use a special flange, especially the pairing of the pipeline flange and valve

pressure torus, we must employ a dedicated flange.
Fourth, the direction of the arrow on the body is the medium pressure direction
Usually the direction of the arrow cast on the body, referring to the flow of media, users see the arrow, the logical flows and the direction of the arrow agreed to install, so installation

has become a habit, installation is easy to accept such instructions, by country standard specifies no error. But in terms of the eccentric structure of the butterfly, so installation is

sometimes some problems, said the following example: eccentric butterfly valve direction agreed to install, by the flow of the medium flow tube medium is a liquid, the valve is closed, if

the original media imports pressure, reduced or zero export media regurgitation reflux, if it is high-level supply, media at a high pressure, the pressure is greater than the inlet pressure,

this valve should withstand reverse pressure common hard-seal butterfly valve for one-way valves, such use is not conducive to the butterfly valve seal, but there will be leakage. Concluded

from the above example: valve body, the direction of the arrow refers to the medium pressure direction. Before installation to make it clear the direction of the media pressure to know the

valve is closed, free body direction of the arrow with the media pressure in the same direction to achieve the correct use of, and the tightness in good condition.
, Elastic hard sealing butterfly valve to the user to acceptance of Note
Users of the procurement to valve to do the sampling or all of the tests it is necessary to do the sampling on the quality of the product are: to ensure the quality of the product, reducing

the installation, maintenance and updating of the valve unnecessary, once installed the success rate high. In the sampling for hard sealing butterfly valve test, some did not pay attention

to the place, causing the French quality, doubt, or to unqualified rejection. The reason where? Screw on the pressure ring, respectively, according to the aperture size 4, 6, 8 and 12, the

bolt diameter does not exceed the M10. These screws fixed resilient seat, can not afford all the media pressure when the valve is installed in the pipeline rely on outside flange bolts

compress the role, in order to withstand all the media forces. For structural reasons, resulting in the leak detection operation of the difference between acceptance and notify the

manufacturer failed on the grounds is common, the product can smoothly pass through communication, and use no problem. So, should pay attention to this, said to provide users a better

understanding and use of elastic hard seal butterfly valves for the next exchange.

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Satellites resembles a lighthouse Edifier e3350 Active Speaker

Posted on February 29, 2012 by admin

Web Design And Seo For www.china-webdesign.com
car audio speaker – China Manufacturer
Thank you for inquiry my car audio speaker, Tel: +86.573.8468.1673, E-mail: futuresound@mailzj.cn
http://www.chinafuturesound.com/key-car-audio-speaker-24/

e3300\\ s successful launch surprised the majority of consumers, the original speaker can do so pretty. She led the revolution of the industry, launched a charm storm. Cruiser did not stop, re-launched a e3300 sister speaker products e3350. The new e-members inherited e3300 design style. They also used red and black color to show the unique atmosphere of the young.
Ground pressurization of the structure of the subwoofer, the diversion pit design satellites crossover design, silk dome tweeter wired remote to adjust the volume, and with AUX input and headphone output, and with a red indicator ring DB9 wired remote interface and securely connected for 54-watt high-power audio power adapter, wide voltage, suitable for global use 5-inch woofer unit, high-power drive, strong bass subwoofer at the top of the touch switch, easy to use satellites with sleek lines constructed, and subwoofer design remains exactly the same style features long pyramid shape is also conducive to the acoustic design, it can effectively eliminate the cabinets standing wave, so that the voice sounds more clean and transparent.
e3350 satellites using a silk membrane tweeters, to ensure that the treble performance to the next level, it sounds more gentle, more detailed. e3350 satellites using dual-frequency design, the satellites using a 70mm diameter midrange speakers, as well as above it comes to silk membrane tweeters. This design dramatically increases costs, but also significantly improved sound quality.
The satellites point of gray soft mat. Do not underestimate the mat, she uses a chemically stable, non-toxic materials, even if placed in white on the desktop for a long time, she would not leave marks. Traditional mats, the days longer, the mat material will penetrate to the light-colored desktop inside to go, can not wipe. Satellites the bottom of the box marked \"L\" \"R\", to facilitate the identification and positioning of the user. Even such tiny details, the Walkman will not effect.
Subwoofer slashing like a curved triangle at the top, and most of the square subwoofer, this appearance is even more thousands of deportment from an arbitrary angle to appreciate her, she will show a gesture . A curved triangle button at the top of the subwoofer, power will be issued after the long period of red light. Button for touch-screen design, the tap will be able to boot off. All over the world are using the blue light is cool, show a red light in front, make you feel this passion is unusual.

    e3350, neat appearance, all the connection devices are hidden in the bottom. Edifier connection design as simple as possible, and consider a solid, so not easy to loose. The subwoofer uses a ground booster design, using a rare inverted phase-groove design.
Inverted relative to the groove surface, clouds concave small round pits, such pits are known as the diversion pit, used to eliminate the noise generated by airflow friction groove surface. Let the bass cleaner and beneficial. After the Cruiser numerous tests, the choice of this rare design.

    Not often adjust or plug is hidden in the bottom of the subwoofer, so can make the desktop look more neat and clean. Then the volume control to adjust how should we do? e3350 has a unique solution.
e3350 uses a triangle wired remote, wired remote control of this weight design, increasing the weight of a wired remote, also installed at the bottom of a non-slip mat, this design does not like some plastic wired remote floating , adjust the table full of scurrying. The wired remote is fully capable of one-handed regulation.

    Knob to the design of large diameter, rotates feel far superior to the general trackwheel. Knob surface using advanced plating technology and CNC machine tools, wired remote flash of the unique luster of an metal. Controller base part, the design has a headphone output, the user can easily switch to the headset. There are a set of AUX input, this interface is prepared to MP3. These two interfaces using a hidden design, they are hidden under a soft rubber. When energized, the line device will issue a circle of red halo, warm and charming.

    The wired remote has a certain weight, you might drop it, will be the interface to have a greater pull force. In order to achieve more control and more reliable connectivity, e3350 uses a DB9 interface, this interface is rarely used in the speaker, this interface is to ensure that the connection is very solid. Often low-end wired remote allows the speaker to receive the broadcast, because of the lack of shielding in the cable, e3350 of the connection are shielded to ensure the quality of signal transmission from outside interference.

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The main types of flux

Posted on February 28, 2012 by admin

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Welding Flux – China Manufacturer
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http://www.hzdayang.com/welding-flux/

Inorganic flux

Inorganic flux is highly corrosive, inorganic acids and salts, such as hydrochloric acid, hydrofluoric acid, tin chloride, sodium fluoride or potassium, and zinc chloride. These fluxes can get rid of iron and non-ferrous metal oxide film, such as stainless steel, iron-nickel-cobalt alloys and nickel-iron, these weak flux can solder.

Inorganic flux is generally used for non-electronic applications, such as brass brazing. But they are sometimes used for lead tinned application of the electronics industry. Inorganic flux because of its potential reliability problems, should not be considered for the electronic assembly (conventional or surface mount). The main disadvantage is the residue of the chemical activity may cause corrosion and severe local failure.

Organic acid flux

Organic acid (OA) flux than rosin flux stronger, but weaker than the inorganic flux. Between flux activity and cleanability, it provides a good balance, especially if its solid content is low (1-5%). These flux containing polar ion, it is easy to remove the polar solvent, such as water. Because they are soluble in water, OA flux is hope on the environmental protection, no-clean flux may be more hope. Such flux is not covered by government regulations, and its chemical content is controlled by the supplier. Available OA flux use of halide as a catalyst, no.

Organic acids (OA) flux due to the term "acid" flux, even in a traditional assembly, generally for people to evade. However, even the so-called non-corrosive rosin flux containing halide, if not properly removed, will cause corrosion.

Organic acids (OA), the use of flux in the military and commercial applications of the hybrid assembly (Type II and III) proved to be feasible. People mistakenly believe that when the wave soldering II and III surface mount assembly (SMA) plate, the OA into the rosin-based fluxes (RA, RMA).

Contrary to popular opinion, OA fluxes have also been successfully applied in military projects. Commercial, industrial and telecommunications industry in a number of other mainstream company, the OA used in wave soldering board underfill surface mount chip component. The people have been found, OA fluxes to meet military and commercial cleanliness requirements.

OA flux materials have been successfully used for reflow soldering pin perforation of the components in the annular welding flux coating. Even through the reflow soldering, can easily use water to clean. Now, water-soluble solder paste is widely used in the past, they do not have rosin flux so sticky, but sticky problem was solved early in the morning. Due to the use of chlorofluorocarbons (CFC) to clean the rosin-based solder paste, the environmental considerations, water-soluble solder paste for clean applications, or because of the low-residue no-clean solder paste and flux problems applications become more advantages.

Rosin flux

Rosin or resin is a natural product extracted from pine tree stumps or bark. The rosin chemical composition of a group of different from the group, but a general formula is C19H29COOH. Mainly of abietic acid (70-85%, look at the origin) and pepper acid (10-15%) components. Rosin contain several percent of unsaponifiable hydrocarbons; for rosin flux removal must be added to the saponification agent (the water of an alkaline saponification of chemicals)

Rosin flux primarily by oil from pine resin extract and refine natural resins, rosin flux is not active at room temperature, heated to welding temperature becomes active. They are naturally acidic (per gram equivalent of 165-170 mg KOH). They are soluble in many solvents, but insoluble in water. This is the use of solvents, semi-aqueous solvent or saponification of water to remove their causes.

The melting point of rosin 172-175 (C (342-347 (F), or just below the solder melting point (183 (C) the desired flux should be below the soldering temperature to melt and become active, but If the flux in the welding temperature of decomposition, it would have no effect. This means that synthetic flux can be used for a temperature higher than the rosin flux, because the former is higher decomposition temperature. general, rosin flux is weak, in order to improve its active (fluxing), requires the use of halogenated catalyst.

Rosin went to the oxides of the general formula:

Of where RCO2H + MX = RCO2M, + HX

And where RCO2H rosin flux (the earlier mentioned C19H29COOH)
M = Sn of Sn, Pb or copper Cu
X = oxide oxide, hydroxide or carbonate carbonate

Rosin flux is classified as rosin (R), rosin mildly activated (RMA) and rosin activated (RA). Various types of rosin flux difference is that the catalysts (halides, organic acids, amino acids, etc.) concentration. R and RMA types are generally non-corrosive, so the security R and RMA flux, although there is no division of disposable, in some applications do not even cleaned. Of course, no cleaning, the reliability of the assembly should be discounted, because the use of the environment, the sticky rosin will absorb dirt and harmful pollutants.

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Analytic LED Bulbs need to pay attention to technical details

Posted on February 28, 2012 by admin

Web Design And Seo For www.china-webdesign.com
led candle lights – China Manufacturer
Thank you for inquiry my led candle lights, Tel:+86-574-87641051 E-MAIL:sales@everlightings.com
http://www.everlites.com/key-led-candle-lights-36/

After 2011, the LED gradually to enter the interior lighting, this also means that march to civilian families. On the one hand,

this is a happy occasion, because the civilian market is very large; the other hand, is a very serious challenge, particularly low

because the civilian market requirements of cost, reliability, particularly high. Now leave fully meet the requirements of the

civilian market, still a long way, we can say there is still a long way to go.

The most common civilian light is the incandescent lamp, which is our ordinary bulbs. If the LED is to replace incandescent bulbs,

it is necessary to develop a in terms of the lamp shape or appearance of similar bulbs and incandescent bulbs, which is often

referred to as LED bulb. Imagine, Bulb market is very huge.

One of the LED bulb requirements

Because you want to replace incandescent, so at least the following requirements:

(1) brightness should be very incandescent usually talk about wattage and not talk about the number of lumens. Although the LED

also can talk about wattage, but due to the efficiency of LED light are still evolving, saying only that the wattage does not mean

that its lumen. The most commonly used incandescent lamp wattage of 15 watts, 30 watts, 45 watts, 60 watts, 75 watts and 100

watts. If you talk about the number of lumens, you can use incandescent light efficiency. Incandescent lamp luminous efficiency of

7.5-12lm / W The higher the wattage the greater the efficiency.
If using LED to replace, and can draw the appropriate wattage. However, because the LED luminous efficiency in the rising, it is

difficult to give an accurate figure. Assumes the usual LED1, its luminous efficiency of 100lm / W, if the highest luminous

efficiency of the LED2 is its luminous efficiency of 130lm / W (warm white light efficiency will be lower than this value). Can be

drawn on the wattage of the two luminous efficiency LED. LEDs require constant current source, the constant current source

efficiency is assumed to be 85%, In addition, because the LED can not adopt a transparent blister, but only using the milky foam

shell. The transmittance of about 85%. They are multiplied together equal to 0.72. After considering the above factors can be

drawn and incandescent lamps of equivalent wattage. Can be seen from the table, LED2 in the same brightness can save approximately

10 times the power. It should be of special note. Is the optical efficiency and heat dissipation of the LED bulb, it can not do

more than 10 watts, which means that there is only 60-75W incandescent, LED bulb can replace. Of course, PAR lamps is another

matter (discussed later).

(2) the shape to be similar to the usual incandescent pear-shaped LED bulb should be pear-shaped. This is very easy to do.

Incandescent lamp for the all-glass products, LED is difficult because you want to heat the structure of the whole glass. The

following will be discussed in detail the structure of the LED bulb.

The volume size should be very LEDs require constant current source and heat sink, so this is very hard to do

(4) the weight to be quite the same because the LED constant current source and heat sink, so this is very hard to do

5 lamp to be the same as China in the past are based on the bayonet, after the reform and opening up most of the switch to screw-

type and the United States. United States of E26 or E27. This is still very easy to do

Power to be the same, should be 220VAC (or 110VAC), this is no problem

Two. The structure of the LED Light Bulb

LED bulb can be divided into external and internal structures. First look at its external structure. A typical LED bulb shape

shown in Figure 1 (which is the maximum power LED bulb authors have recently seen in the U.S. Silicon Valley, Fry s Electronics

store, $ 40):
Three bulb lamp power

Bulb mains power supply, so the power must be mains AC input, the English referred to as the Off-Line Chinese into the off-line is

very appropriate, because the English original intent is FromLine meaning, it should be translated into online, but the will and

network online mixed, so not as good as directly as electricity power.

Bulb the mains power supply indicators are as follows:

A power supply basic types: the main points isolated and non-isolated two, it refers to the load end with FireWire 220V isolation.

Generally speaking, non-isolated because no isolation transformer, so the cost is low, but requires that the aluminum plate high

pressure, or the radiator it is possible to live. It is more easy to pass the safety test. Isolated relatively safe, relatively

easy through the safety regulations, but the cost is high.

(2) Power output power: Bulb the size must be equivalent to the glass bulb incandescent radiator size is limited, yet can not

exceed 9W.

(3) Power Efficiency: generally isolated in about 80-85%, non-isolated in about 90%

Power factor (PF): without PF correction in the 0.5-0.6, PF correction in the 0.9-0.99 about

5 volume size: As the the Bulb left power a small space, so the volume limit is very strict.

Below to introduce several typical bulb light power.

3.1 non-isolated power supply

Here is a U.S. ON Semiconductor NCP1014 non-isolated power principle

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Everywhere the LCD-screen

Posted on February 28, 2012 by admin

Web Design And Seo For www.china-webdesign.com
LCD module – China Manufacturer
Thank you for inquiry my LCD module, Tel： +86-571- 85121224, E-MAIL：sales@tsingtek.com
http://www.china-lcdmodule.com/

  LCD technology is not only a job well done in the industrial field has been extended to all walks of life.
A variety of multimedia information had to use the LCD screen of small, thin, ultra-long working hours and other advantages to solve the display problem in other public places, publish, and

display can be seen everywhere in the shadow of the LCD!
    Requirements to meet all walks of life live shows, more and more field and professionals are using the new LCD screen methods and tools to solve the data display and presentation

analysis and other issues. We can feel from the information sent by the big picture shows the broad vision everywhere, omnipotent and infinitely happy!
    Relative to the DLP and PDP, LCD life is very long, and low power, little heat, the failure rate is very low. PDP plasma is easy to produce ion mark, and its dynamic life may be up to

tens of thousands of hours, display the static image of high brightness after 5,000 hours there will be screen burn; DLP lamp life 3000-5 1000 hours, on the choice of curtain walls in the

large-screen 24 hours of continuous use of security monitoring, LCD mosaic wall will become the first choice, which not only increase efficiency but also reduce costs and maintenance costs.
    In addition, the LCD has a variety of full size, random size. In addition to splicing arbitrarily chosen number of {line (m) x column (n)}, the size of the screen are also a variety of

options, and can be mixed stitching, which meet the needs of the different places of use. In addition, according to the customer on the LCD splicing system the size of the system and

application requirements, in accordance with the use of the system environment, choose the right products and splicing, the design of specific implementation of the program to meet the

application requirements of the system. Choose a different video processing system based on user input signal to achieve the VGA, composite video, S-VIDEO, YPBPR / YCbCr or DVI signal input,

to meet different use occasions, the demand for different signal input. Control software, a variety of signal switching, and spliced ​​into the full-screen display, any combination of image

stretching, image display roaming, image overlay display. LCD splicing response to customers\\ different needs, to create a personalized system to provide a different implementation and

technical support.
    Liquid crystal mosaic wall, no such problems. In contrast, the LCD unit size is relatively small, but the resolution is the highest, and the size of mixed-splicing, which is conducive to

the user based on the actual needs and reasonable arrangements for the stitching program to reach that size with the all-win should be the effect.
    LCD splice products appear, the big-screen market situation has undergone great changes. LCD display products with a high-definition, wide viewing angle, high brightness, long life and

other advantages, many users quickly recognized and accepted. By virtue of high-definition, efficiency, longevity, highlight the advantages, has no doubt won the top spot in the display area

as the LCD.
    Based on the LCD splicing products patchwork technology continue to make breakthroughs, product specifications and constantly enrich and continuously enhance brand camp with its original

price and the installation and maintenance advantages, splicing to the 2013 LCD is expected to exceed the large-screen market share of 50%. Worth the wait, with the liquid crystal 5.3 mm

stitching unit into the market, the LCD splicing will usher in a period of rapid development.
    Written in the last: \"Size\" is the core of splicing, but which carry a lot of future direction, such as \"seamless\" stitching, modular, networked, intelligent, digital HD, of course, such

as text, light, low-carbon, to maintain such. In summary, with the splicing gap continues to reduce the competitive advantage and cost LCD Video Wall will certainly become a pioneer and

leader of the splicing market.
    The big-screen industry\\ s rapid development has attracted the participation of many manufacturers, according to relevant data, the country has more than 300 manufacturers and more than

one thousand integrators involved in the industry, to form a huge mosaic wall industry chain. Currently, the market splicing products to LCD, DLP, PDP, the LCD display products for its

excellent use of effects, the advantages of the technical parameters occupy nearly 30% market share, according to relevant data, 2011 domestic large-screen display wall market output will be

over 5 billion for the first time, but also the rapid development of the annual growth rate of 30%. Authoritative experts predict that the next five years, the market share of the LCD, the

LCD will further increase, to become the mainstream technology.
    Waves in the Panning, gold will shine. Market Ebb Tide, the LCD liquid crystal mosaic advantage of increasingly prominent. As more and more narrow the margins of the LCD screen, combined

with its high-definition, high brightness, high color saturation and flexible tiled display combination of environmental health, long life, low maintenance cost advantages, it mosaic wall on

the big screen more and more applications, such as security, transportation, finance and other fields as the end product of professional monitoring, had overcome the problem of life, general

life of the LCD display can be easily reached more than 50,000 hours, and high stability, low-maintenance, widely favored in the market, at the same time, the resolution can easily do more

than SD to 1080P full HD grade power and heat is relatively small, the greatest concern and has a lower price, under the same conditions, the LCD price cheaper than DLP times, we firmly

believe that these advantages will be the main cause of the LCD erode the market, and become the future trend of development of large-screen wall.
    LCD-splicing techniques continued to emerge since 2009, Samsung introduced the ultra-narrow-splicing techniques, patchwork continue to break through the significant advantage in the

limit, Samsung, Sharp, LG, to the narrowest reach 5.3mm from 6.7mm to 6.0mm, more and more close \"seamless\" stitching. Sizes, Ultra Narrow LCD splicing screen coverage to 37 inches 46 inches

47 inches 55 inches 60 inches and other specifications, the market has more choices, splicing can be more flexible. Technology and LED backlight technology allows the LCD splicing screen

displayed in the color, brightness, etc. The effect of the greatly improved \"3D\", \"Full HD\" and \"touch\", uniform stitching, before maintenance. \",\" cloud computing \"application of new

technologies abound. Splicing products enable a wide range of large-screen more \"Aspect\", a more prosperous market.
    The recent improvement of network technology to promote the application of digital information distribution system, flat stitching clear picture quality, the smaller area of ​​flexible

splicing has been increasingly widely used in the field of commercial display. Large-screen commercial information display applications, from a more professional and high-end applications

extended to now cover multiple segments of the business, entertainment, public administration applications, especially in the media, real estate industry market demand, driven by the rapid

development of the industry.
    Continuously push forward the process of domestic investment in energy, transportation, basic industries such as construction and industrial automation, information technology, large-

screen mosaic steady growth in demand for industrial application, large-scale monitoring, command scheduling big-screen projects frequently, there has been a lot of stitching number over one

hundred oversized stitching screen project. With the LCD screen continue to make breakthroughs patchwork of restrictions in industrial applications strong together, the recent large-scale

energy industry splicing screen project with LCD-splicing techniques.
    In the next three to five years, the rate of adoption of the LCD will be faster and faster, high-definition must be the main products in the future, such as the family TV, including

commercial, will go to the HD signal, including the monitoring system of finance, banking transformation are carrying out high-definition and high-definition camera, high definition screen

display to ensure that monitoring is more secure, the general trend of LCD is bound to become a mainstream. In 2015, China will be fully into the HD era of HD application is bound to use the

LCD to do a very good support.

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led energy-saving lamps

Posted on February 28, 2012 by admin

Web Design And Seo For www.china-webdesign.com
led floodlight outdoor – China Manufacturer
Thank you for inquiry my led floodlight outdoor, Tel: +86-572-7806113, E-mail: sales@ledeverlite.com
http://www.ledeverlite.com/key-outdoor-led-floodlight-4/

LED light emitting diode, LED energy-saving lamp with high brightness white light emitting diode light source, high luminous efficiency, low power consumption, long life, easy to control, maintenance-free, safety and environmental protection; the cold light of the new generation of solid, light color and soft, The bright, colorful, low loss, low energy consumption, green, suitable for families, shopping malls, banks, hospitals, hotels, restaurants various public places for a long time lighting. Flash DC, play a very good protective effect on the eye, is the best choice of the lamp, flashlight.

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LED introduced

Posted on February 28, 2012 by admin

Web Design And Seo For www.china-webdesign.com
led street lighting – China Manufacturer
Thank you for inquiry my led street lighting, Tel: +86-572-7806113, E-mail: sales@ledeverlite.com
http://www.ledeverlite.com/key-led-street-lighting-27/

  Reflective self-ballasted LED lights (COB module) LED energy-saving lamps to compact fluorescent lamps (ie, energy-saving lamps), after a new generation of lighting. Compared to the ordinary energy-saving lamps, LED energy saving lights environmentally friendly mercury, recyclable, high light efficiency, long life, which means that the bright, resistant to frequently switch, light a small decline, rich colors, adjustable light, rich changes. Extensive use of ordinary energy-saving lamps can cause mercury pollution, soil water, and thus indirectly contaminating food, environmental hazards should not be overlooked.

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How to buy the best cost-effective LED Jewelry counter lights

Posted on February 28, 2012 by admin

Web Design And Seo For www.china-webdesign.com
gu10 led light bulbs – China Manufacturer
Thank you for inquiry my gu10 led light bulbs, Tel: +86-572-7806113, E-mail: sales@ledeverlite.com
http://www.ledeverlite.com/key-gu10-led-light-bulbs-18/

1, LED jewelry lamp lights Color consistency: At present, there are many packaging factory
Large and small, add up to thousands, of course, the strength of the strong or weak.
There are many small package plants Spectrophotometer machine, either, regardless of the light color separation, or outward.
Po This quality is difficult to ensure.
Chip LED Jewelry Lighting: LED chips (also known as the LED chip) domestic and Taiwanese chip
Imports of chips (American chips, Japanese chip, Germany, chips, etc.) on specific brand is no longer introduced.
But the chip is different, prices vary widely. Imported LED chip is expensive, but very few people use in the domestic market,
That for high-end customers. The current high-end customers is generally used in Taiwan s chip and the United States Puri, good price.
3, LED jewelry lamp brightness: brightness LED prices, normal brightness and bright LED price difference between the.
    Procurement must clearly know that they need is what kind of brightness.
In order to accurately position their products.
Generally buy clear to these words, would be more accurate for the price of certainty.
Buzhi Yu just to bargain and bargain and can be targeted. In order to purchase your ideal LED bulb.
4, LED jewelry lamp circuit board material: LED jewelry light circuit board can be divided into the aluminum plate and glass plate,
Good heat dissipation, to help life long must the aluminum substrate, in particular, like the power and 1 meter 72 lights 5050, or will affect the quality.
5, LED jewelry lamp welding effect: LED jewelry lamp assembly points of hand soldering and machine soldering two
Manual welding and soldering iron. But such practices out of products first, the appearance of ugly
(Solder joint size is inconsistent, the flux residue, solder joints are not smooth, LED packaging is ruined, etc.)
Second, static protection is not good, a lot of LED chips breakdown
Lead to power the micro-light or bright.
Not the same machine welding machine welding using the reflow soldering,
Beautiful appearance, not only welding products (solder joint size, smooth solder joints, solder amount was the rule of the arc-shaped,
Flux residue LED packaging intact), but not the chip static burn.
At the same time, the location and direction of the LED are more beautiful. This can be seen directly from the appearance.

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hot blast valve installation the hot air valve maintenance precautions

Posted on February 28, 2012 by admin

Web Design And Seo For www.china-webdesign.com
steel making technology – China Manufacturer
Thank you for inquiry my steel making technology, Tel: +86 371 6091 6560E-MAIL:henantaineng@yahoo.cn
http://www.metallurgyvalve.com/key-steel-making-technology-115/

hot blast valve installation technical requirements
A hot blast valve can only stem perpendicular to the ground installation, commissioning should be in the stem perpendicular to the ground conditions;
 

The direction of two hot blast valve ventilation and cooling water out of the direction must comply with the installation signaled icon. Install the hot blast valve when the wind direction arrow should point to the hot air main channel; hot blast valve is used as combustion valve and flue valve when the wind direction arrow should point to the hot stove; hot blast valve is used to back in off-air valve when the wind direction arrow should point to the hot air in charge of Road; hot blast valve with shut-off valve for mixing air when the wind direction arrow back to the hot air competent Road (hot blast valve is used as the other valve installation only refer to the nameplate name is still the hot blast valve nameplate name has made it clear for the above-mentioned valve name, the The wind direction arrows, compared with the medium flow).
 

3 before commissioning cotton yarn the body, the valve sealing surface to wipe clean, to prevent the sealing surface is scratched. Before running to the oil point lubricating floating sealing parts scattered Note graphite or grease;
 

Installed check valve, the valve cover, valve stem seals and other parts of the bolts fastening to ensure that no air leakage and the whereabouts of the valve plate smooth. Manual low speed start valve to confirm the agency is operating normally and then start commissioning;
 

Valve pipe installed for the whole installation (without gear). Installation lifting (located in the circular flange at four points on the body lug lug bonnet is strictly prohibited for the overall lifting), the valve the whole installation and then gear installed in the valve;
 

6 valves, pipe flanges application of ceramic metal seal plus coated with high temperature sealant to seal to eliminate air leakage;
 

7. Valve opening, the lower part of the valve plate should be higher than the valve channel along the more than 100mm (debugging method: the upgrading of the valve plate to the upper limit and the whereabouts of the 50mm valve plate open position). Valve cooling water flow, water temperature is below 40 ° C;
 

Valve factory installed, the drive frame and the valve body separately packaged and placed on the scene and then the whole installation. Installation, mounting interface position of the valve body and gear connections are tight, close to the site of switch position after fastening the installation and adjustment. Valve commissioning, you should manually after power start. (Note: the installation of the hydraulic transmission valve, the valve opening and closing state, so that the cylinder piston on both sides are free travel, adjust after the fixed limit switch. Rack and pinion hydraulic transmission valve should be based on the valve plate travel limit The position adjustment cylinder piston position, and then hanging chain). Operation should be smooth may not have collision and impact card hysteresis phenomenon.
 
The hot air valve repair and maintenance

A weekly check valve is closed the sealing performance, touch, ears feeling to determine the valve sealing effect, identify problems and report processing;
 

2 class before the class to check cooling water temperature, water pressure, and throughout leakage problem immediately removed;
 

Open close the valve should observe the smooth operation conditions, identify problems in time;
 

Regular weekly two filling oil, grease, to prevent short of oil burns damage the moving parts;
 

(5) is strictly prohibited for use in the cooling water shortage, and without water conditions;
 

Regular inspection and cleaning valve deposits, abnormal timely manner;
 

Electric valve electric device instructions for use Please read the instructions of the random electric device.
Applies to large and medium-sized blast furnace supporting the hot stove system. For high temperature hot blast valve, backflow such as off-air valve. Valve seat, valve plates, valve cover lined with refractory material.
Applicable to the media: high-temperature air, high temperature exhaust gas;
Suitable temperature: ≤ 1450 ° C;
Nominal diameter: DN500 ~ 1800;
:0.08-0 .5 MPa, nominal pressure;
Drive: electric, hydraulic, pneumatic;
Features: the cooling water flow resistance, good cooling effect, high temperature, long life energy saving.

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