Dust removal issue at the catalyst tank top of catalytic cracking units
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Help: 1. Two-stage cyclones are installed at the top of the catalyst tank for dust removal. Should the inlet of these two-stage cyclones be connected to the additive feed line, or should the flow enter the tank tangentially to that line, with the exhaust going to the two-stage cyclones? If possible, please provide a diagram or photo. 2. Are metal filters used for the exhaust at the top of the catalyst tank? Which company manufactures them? It seems there is a factory that uses two-stage ventilation and then adds a metal filter, with LLumar filters being used. Thank you!
There’s no need for a complex cyclone on the top of the catalyst tank; we use a cloth bag filter instead. Simple and easy to use
This post was last edited by humin on 2017-4-15 05:51. The cyclone separator at the top of the catalyst tank actually doesn’t need to be that complex; generally, a single stage is sufficient. In recent years, metal sintered filtration has been used; it seems that Lanke has achieved some results in this area. However, using sintered filters in this location is a bit extravagant, as it is an intermittent operation. There are no technical issues with this approach, but the investment cost is high. Choosing sintered filters may reduce operating costs, and another advantage is that it helps to lower the noise generated by the steam ejector.