The recovery of fertilizers typically after drying tunnels or drum dryers is associated with a high load of particulates and very humid gas streams.
The recovery of these products is commonly performed by dryer cyclones as they allow for a direct powder capture and avoid filter clogging due to condensation. Arrangements with cyclones and/or with bag filters are usual in the industry.
Client's needs include a low maintenance high efficiency cyclone system that is efficient enough to comply with regulatory PM limits avoiding the use of a bag filter as the primary or final stage deduster.