Solid-Liquid Separation With a No-Dry Rotary Pressure Filter

摘要

A process for recovering a solid product from a solid/liquid mixture. The process includes filtering a solid/liquid mixture to form a filter cake in a first solid-liquid separation zone. The filter cake comprises the solid product. The first solid-liquid separation zone comprises a rotary pressure filter apparatus configured to apply a pressure differential across at least one filter member, and the filter cake is formed on the filter member. The filter cake is then washed with fluid in the rotary filter apparatus to form a wet filter cake. The wet filter cake is then transferred to a reslurrying zone. The wet filter is mixed with a reslurrying fluid to form a slurry, and the slurry is transferred to a second solid/liquid separation zone, where the solid product is separated from the slurry.

主权项

1. A process for recovering a solid product from a solid/liquid mixture, comprising:
filtering a solid/liquid mixture in a first solid/liquid separation zone to form a filter cake, the filter cake comprising a solid product, the first solid-liquid separation zone comprising a rotary pressure filter apparatus configured to apply a pressure differential across at least one filter member, the filter cake forming on said at least one filter member; washing the filter cake with a wash fluid in the rotary filter apparatus to form a wet filter cake; transferring the wet filter cake to a reslurrying zone and mixing the wet filter cake with a reslurrying fluid to form a slurry; transferring the slurry to a solid/liquid separation zone and separating the solid product from the slurry.