Measures to reduce dust in dry processing areas (with rewards)
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The drying area is the second source of dust generation after the calcium carbide storage area, and it represents a significant challenge. Please share the measures you have taken to reduce dust in this area. (Rational measures: 20 points)
It seems the poster is involved in the calcium carbide industry; the dust generated during drying can be removed by using fans to blow it into dust collectors. Specifically, different manufacturers adopt varying approaches
The focus should be on addressing the leakage points and achieving effective dust collection. The dust collection system should not rely on a single set of ventilation equipment to handle dust collection at all locations; such an approach is neither economical nor effective. If there are many dust collection points, it is advisable to use multiple smaller systems in combination in order to improve dust collection efficiency
Reply 3# ybcity ·1: Set it up inside the factory building for collection and cleaning. 2 Install a pulse dust collector, and use a fan for extraction. 3. Purposefully reducing the fall and deposition of dust is the best measure for dealing with dust.
One of our company’s units uses lime as a raw material. The method for removing dust indoors involves using fans to draw air into the dust removal tower; after being washed with water through a pump, the dust falls into a dust collection tank, where it is removed regularly using grab tools. Additionally, electrostatic dust removal, multi-tube dust removal, and pulse dust removal for boilers can be referred to
Whether it is a cyclone dryer or a fluidized bed, the area where dust is present is mainly at the outlet of the exhaust fan. I have seen two methods for dust removal: washing and bag filtration, and bag filtration is considered to be better.
For bag filter dust removal, you can consult relevant manufacturers. For water-based dust removal in a production line with a capacity of 200,000 tons, 50 cubic meters per hour is required, and the centrifugal mother liquor is recycled for use.
This post was last edited and replied to by clq20040107 on 2010-9-13 20:22. Reply 7# lwg0719: A pump with a capacity of 50 cubic meters per hour? Now, efforts to save energy and reduce emissions are being made everywhere through this approach. . . . By the way, most of the dry dust is caused by screw conveyors, centrifuges, vibrating screens, and especially the return air from rotary feeders. How can these problems be solved? As for the exhaust outlet of the induced draft fan, we already have a large-volume cyclone dust removal system; the dust at the outlet of this system has little impact on the drying process. I wonder if other factories also use such systems?
Our factory uses cyclone dust removal, but it’s not effective! I have come here to learn*~~
Reply to 8# clq20040107: The dust generated by backflow is a problem related to the manufacturing process; using negative pressure eliminates this issue. Moreover, it’s impossible for large-scale cyclones to separate all of the resin – based on the principles of cycloning, only resin within a certain particle size range can be recovered, as finer particles cannot be separated.
The existing device uses gas-phase transport and positive pressure; how can it be operated under negative pressure?