Catalysts are widely used in petrochemical and chemical industry, and the products and catalysts usually should be separated after reaction. The inorganic ceramic membrane has excellent heat resistant and chemical resistant solvents and good mechanical strength and has shown outstanding advantages in petrochemical and chemical production.
Compared with the traditional sedimentation, plate and frame filtration and centrifugal separation, the difference is that ceramic membranes mainly adopt cross-flow filtration in solid-liquid separation of catalytic reaction. It is necessary to separate the feed liquid for constant circulation at the circulation side, and the membrane surface can retain catalysts, while the reaction product is permeated through the membrane hole. Because the fluid flow is parallel to the surface of the filter media and the filtration resistance is greatly reduced, the higher permeate flux can be kept at lower pressure and the filtration operation can be carried out continuously for a long time.
Disadvantages of the traditional catalyst separation method:
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