Bag-type dust collector In the crushing plant of the Ende furnace coal preparation system, we used the DZW93-144 low-resistance venturi pulse bag type dust collector. It removes the dust particles in the gas when the dust-containing gas passes through the bag-shaped filter cloth, and the separation effect is better. The dust-laden gas enters the air uniform box from the middle of the dust collector, and some of the gas with a large dust content enters the lower ash hopper from the ministerial port under the uniform box. Most of the air enters the middle part of the dust collector through the louver port, and is purified by the filter bag. The dust containing dust is retained on the outer surface of the filter bag. As the filtration conditions continue, the dust accumulated on the outer surface of the filter bag increases, and the resistance of the filter bag increases accordingly. Therefore, the filter bag must be cleaned and shaken off using compressed air (0.2 to 0.3 MPa) on time.

The gas from the air-jet tower then enters the packed washing tower. The structure of the washing tower is DN"5600mm×21000mm. There are 4 layers of trays inside. There are two kinds of structured packing on the tray: 6105kg light porcelain multi-toothed ring and 694kg belt The hole is lightly ridged and pulled to the west ring. The washing tower uses a pipe-type liquid distributor to spray cold water downward, and the gas is from the bottom upward. When they respectively pass through the gas-liquid flow path of the structured packing, the fluid distribution is more uniform and increases effectively. In addition, the material can be adjusted according to the actual production requirements to change the resistance. The wet dust removal equipment has a large discharge of sewage, and requires a separate water treatment system. There are certain problems in the design of the sedimentation filtration system of our plant. .

The gas from the venturi water film precipitator is also dedusted by a two-stage venturi scrubber. The venturi water film dust collector used in our factory is a WSCII5.0 negative pressure dust collector. The main body of the venturi scrubber is connected by three sections of a shrink tube, a throat tube and a diffusion tube. The liquid (water) is introduced by a circular jacket around the throat tube through a plurality of radial water holes, and the venturi dust collector uses liquid machinery in it. A negative pressure is formed inside to draw dusty gas into the dust collector pipe. At the venturi throat diameter, the high-speed airflow and the water droplets sprayed from the nozzle are in full contact with the atomization, and the liquid is sprayed into fine droplets, fine dust and water droplets. The combination of agglomeration and volume increases, and after tangential entry into the water film cyclone, the centrifugal action flows down through the wall to the water seal discharger, and the purified gas is dehydrated and discharged through the fluid machine.

Conclusion Ender furnaces are more suitable for coal such as long flame coal, non-sticky bituminous coal, weakly sticky bituminous coal, and can also gasify high ash brown coal. Low-quality coal has low cost and can get low-cost gas. Ende furnace technology is relatively mature, but it is necessary to have good supporting process equipment to achieve better benefits. The above is the principle description of the main net cleaning equipment used by our factory in the Ener furnace pulverized coal gasification system. Understand these for us to reasonably analyze and utilize the equipment, optimize the process and improve the purification capacity so as to better develop the use of inferior coal gas. Significance.

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