dust collector precautions refers to the precautions to remove dust adhered to superfluic materials (cloth bags or filter cans) by air compression in gas producer. According to the size of the bag dust collector, there will be several pairs of pulse solenoid valves, which are operated by the dust removal pulse controller or PLC. Each time, a group of pulse solenoid valves will be opened to remove the dust of the part of the cloth bag or filter cylinder operated by it. While the other cloth bag or filter cylinder is working normally, a group of pulse solenoid valves will be opened after a period of time. The next part of the dust removal equipment is composed of the silo, the upper shell, the middle shell and the lower shell, etc. The upper, middle and lower shells are the structure of the condensate system. When working, the smoke vapor body from the inlet pipe into the bin, coarse and fine particles immediately fall into the bottom of the bin, fine particles with the cyclone turning point to the middle and lower shell, dust accumulation attached to the outer surface of the dust bag, after the worry of the steam body into the upper shell to the combination pipe - exhaust system channel, exhaust air through the centrifugal fan. The whole process of ash removal is to disconnect the air duct at the exhaust inlet of the chamber first, so that the cloth bag of the chamber is in the condition of no cyclone (condensate system reverse air ash removal). Then open the pulse solenoid valve with air compression to carry out the single pulse gas generator dust removal, emergency cut off valve closing time to determine after the gas generator dust from the dust bag from the dust bag ground settlement to the bin, prevent dust in the dust bag after getting rid of the surface of the dust bag with the cyclone attached can be collected to the surface of the adjacent dust bag, dust bag cleaning. The automatic exhaust valve, pulse solenoid valve and star unloader are operated automatically by the programmable temperature controller. When the smoke and dust vapor body enters through the air inlet and passes through the silo, part of the large particulate dust in the vapor body is extracted by the inertial moment and the effect of the force, and immediately falls into the bottom of the silo. The dust vapor body enters the dust bag worry area of the middle shell according to the back of the silo, the steam body passes through the filter screen, and the dust is blocked to the outer surface of the dust bag. After cleaning, the steam body enters the upper shell through the mouth of the dust bag, and then is discharged by the air conditioning outlet.

The key function of air bag in dust collector precautions is to store enough air compression to ensure the smooth working pressure of air path, and also have the effect of sewage treatment. A good method is to press the air bag of the dust removal equipment in 1 side of both sides of the monopulse bag type dust collector. If the air bag is installed in the front end of the clean brake air chamber of the bag dust collector, the dust collector filter bag can not be installed in the indoor space of the bag chamber matching the bottom of the air bag of the dust removal equipment, which wastes the indoor space of the bag chamber; The gas is packed on one side of both sides of the bag dust collector. Because the gas is packed on both sides of the bag chamber, the indoor space of the bag chamber can be flexibly used, the same total area of over-anxious steel consumption is reduced, and the elbow part of the blowpipe of the spray boiler is exposed to the outside of the clean brake chamber, so the engineering construction and installation is more convenient. Therefore, as far as possible, people should choose the side way to install the air bag.

The air leakage rate after the dust collector runs depends on the sufficient consideration of the air tightness of each link in the design.

1. Weld design, it is required that the weld of the precipitator box shall be welded in Y shape without residue, porosity and leakage welding, and leakage inspection shall be carried out.

2. The contact surface of all valves, manholes and flanges should be flat, sealed with annular rubber, and tested for air tightness before installation to control the air leakage rate of less than 1%.

Three, the maintenance door with pressure relief device, using foam silicone rubber as a gasket, but also using six pressure fixed, good sealing.

Four, dust collector chamber to do air tightness inspection found leakage and then make remediation. Due to the good air tightness design, the test results show that the air tightness reaches less than 1%.

The relatively large speed of air inlet streamline is conducive to dust separation. In the production process of each component, the bag dust collector will be solved according to different specifications. Similarly, each proportion will have a variety of changes, and in the whole process of dust removal equipment, their rate is good and the working pressure damage also has harm, so that it will indirectly harm the actual effect of all dust removal equipment. In fact, there are many factors that harm the actual effect of dust collector precautions. For example, the intake pipe will cause them some harm, and the total area of the intake pipe will cause them more harm. The total area of all gas channels is relative to the total area of the initial cylinder crushing, and the speed of streamlining is very relative, which is beneficial to the separation of dust. In the whole process of dust removal of bag dust collector, the straight length and deep depth of exhaust pipe will also cause harm to them. According to the actual effect of dust removal of all dust removal equipment, the deep depth is also large, and the impact force is relatively deep, so that in the operation period of exhaust pipe of all dust collector, the good rate of dust removal will be reduced.

dust collector precautions

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Par kaisen
Ajouté Mai 15



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