Is it feasible to use a bag filter to treat gases containing urea dust?
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Recently, I worked on a project involving the negative-pressure transportation of urea particles. After the urea passed through a cyclone separator, the exhaust gas from the cyclone was treated with a bag filter before being released outside. I had no prior exposure to urea. I’m not sure if a bag filter can be used in this location, whether there will be any problems, and what precautions need to be taken.
The particle size and quantity of urea dust determine the service life of bag filters; if this life is short, it has little practical significance. I have used bag filters before for flue gas treatment ； At that time, the main considerations were temperature, pressure drop, dust passage rate, and service life. If this is to be used, it is likely necessary to have one in operation and another as a backup, so as to allow for timely cleaning and ensure continuous production.
Be careful to maintain warmth, as urea tends to absorb moisture and become damp, which can clog the filter bags.