Catalyst thickener filter disc takes the sintered mesh constructed from multiple layers of stainless steel (304, 316, 316L) woven mesh after special laminate pressing and vacuum sintering as the main filter layer.
It is installed in the catalyst thickener and is used to purify chemicals and recover catalyst during the production process of aniline, TDI, MDI, BDO and other chemicals.
First, the suspension of aniline and other chemical products and solid catalyst particles is injected into the catalyst thickener. The solution flows through the high precision filter disc and into the center pipe, and then flows out of the filter. The separated catalyst returns to the agitated reactor and continues to take part in the reaction. Its filtration mechanism is a new form of filtration similar to cross-flow filtration and filter cake filtration.
When the differential pressure of the filter disc is too high and affects the filtration efficiency, the washing liquid can be pressurized to the washing nozzle in the middle of the filter disc through the water flushing system to wash the filter disc. In this way, the purpose of cleaning the filter disc is achieved without disassembling the equipment, thus extending the service cycle of the filter disc.