Patent ID: 6887390
Filing Date: 2005-05-03
Classification: B01D

Abstract:
1. A method for producing a filtrate of low solid content from a slurry stream from a Fischer-Tropsch slurry bed reactor, the method comprising: a) providing a filter housing comprising a slurry chamber and a filtrate chamber separated by a filter medium comprising a filter cake disposed on a substrate, wherein the filter cake has a thickness and provides a substantial majority of the filtration activity; removing a slurry, comprising a liquid phase and a solid phase, from the linear velocity; c) applying a pressure differential between the slurry chamber and the filtrate chamber so as to form a filter cake comprising a portion of the slurry solid phase disposed on the substrate; d) permeating a portion of the slurry liquid phase through the filter cake and the substrate to generate a filtrate flux; and e) periodically performing a cake thickness reduction step.