公开(公告)号：US5785860A

公开(公告)日：1998-07-28

申请号：US710254

申请日：1996-09-13

申请人： Kevin J. Smith

发明人： Kevin J. Smith

IPC分类号： B01D61/14 ,  B01D63/06 ,  B01D69/14 ,  C10G31/11 ,  C10M175/06 ,  B01D61/00

CPC分类号： B01D61/145 ,  B01D63/063 ,  B01D69/14 ,  C10G31/11 ,  C10M175/06

摘要： A large pore (500.degree.-2000.degree. A) ceramic membrane is used to separate asphaltenes from heavy crude oil. Permeate is recycled to the feed for an initial period, during which the pores are deliberately fouled to reduce pore size. This reduction eventually levels off, at which point recycling is terminated and ultrafiltration is continued thereafter at good flux rates with effective asphaltenes removal.

摘要翻译： 使用大孔（500°-2000°A）陶瓷膜将沥青质与重质原油分离。 渗透液在初始阶段被再循环到饲料中，在此期间毛孔被故意污染以减少孔径。 这种减少最终达到平衡，此时再循环被终止，此后在有效的沥青质去除的情况下以良好的通过速率继续超滤。