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Pulse Jet Bag Filter
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The pulse bag dust collector produced by Shanlu Heavy Industry overcomes the shortcomings of insufficient cleaning strength of compartment reverse blowing and the re-attachment of dust in general pulse cleaning, improving cleaning efficiency. It features low equipment operating energy consumption and long service life of filter bags and pulse valves. In addition, Shanlu engineers have designed two major series of dust collectors—PPC large pulse dust collectors and MDC small special-purpose dust collectors—for different customers to choose from.
Working Principle
Dust-laden flue gas enters the dust gas channel from the inlet, then turns downward into the ash hopper. When the airflow hits the deflector and turns toward the clean gas bag chamber, coarse particles fall to the bottom of the ash hopper by inertia, while fine dust rises with the airflow. When the airflow passes through the filter bags, the dust is retained on the surface of the filter bags. The clean gas is collected through each filter bag opening into the clean gas box, and then discharged through the outlet butterfly valves of each chamber into the clean gas exhaust duct. This type of bag dust collector adopts compartment offline cleaning. The filter bags in each compartment are divided into several groups, with several bags per group. As the filtration process continues, the dust layer on the outer surface of the filter bags gradually increases, thereby raising the resistance of the dust collector. When the resistance rises to a certain range (or timed cleaning is set), the cleaning control system sends a signal. First, the switching valve is closed and the pulse valve is opened. Compressed air is injected through the blowpipe toward each filter bag, causing the filter bags to deform and vibrate, achieving the purpose of cleaning, or timed cleaning is set. After cleaning is completed, the switching butterfly valve opens again, and the dust collector returns to the filtration state without mutual interference, achieving long-term continuous operation and improving the cleaning effect.
Advantages and Features
1. High cleaning efficiency, dust no longer adheres.
2. The blowing cycle can be extended by more than 2 times compared with general pulse cleaning.
3. The air source pressure is reduced from the conventional 0.5–0.7 MPa to 0.3–0.5 MPa.
4. The service life of filter bags and pulse valves is improved.
5. The bag opening adopts a spring tensioning structure, which is easy to disassemble and assemble and has good sealing performance.
6. The cleaning system automatically controls cleaning and ash discharge.
Equipment Showcase and Customer Cases
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