公开(公告)号：US5560828A

公开(公告)日：1996-10-01

申请号：US312481

申请日：1994-09-23

申请人： Gede Wenten ,  Dirk M. Koenhen ,  Hendrik D. W. Roesink ,  Alan Rasmussen ,  Gunnar Jonsson

发明人： Gede Wenten ,  Dirk M. Koenhen ,  Hendrik D. W. Roesink ,  Alan Rasmussen ,  Gunnar Jonsson

IPC分类号： A23C9/142 ,  A23L2/74 ,  B01D61/14 ,  B01D65/02 ,  B01D69/02 ,  B01D69/04 ,  B01D69/06 ,  B01D69/08 ,  C12H1/07 ,  C12H1/075 ,  C12M1/12 ,  B01D61/00

CPC分类号： B01D61/147 ,  A23C9/1422 ,  A23L2/74 ,  B01D65/02 ,  C12H1/063 ,  C12M29/04 ,  C12M39/00 ,  B01D2321/04 ,  B01D2321/2066

摘要： The invention relates to a process for the removal of components causing turbidity, from a fluid, by means of microfiltration, whereby the fluid is beer, wine, fruit juice, bacterial suspension, blood, milk, enzyme suspension, etc. According to the invention, the fluid to be treated is fed across an asymmetric membrane having a pore structure such that the pores on the feed side of the membrane are larger than the nominal pore size and the pores of nominal pore size occur in the cross section toward the permeate side, the filtered off components are back-flushed from the membrane and are subsequently carried away with the fluid. The nominal pore size is usually 0.1-5.0 .mu.m and preferably 0.2-1.0 .mu.m. The membrane may be tubular, flat or capillary. Back-flushing takes place intermittently with a frequency of 1 second to 10 minutes for 0.1-1 second at a counter pressure of 0.5-5 bar. The feed velocity is preferably below 2 m/s and the pressure difference over the membrane is less than 0.5 bar.

摘要翻译： 本发明涉及通过微量过滤从流体中除去引起浑浊的成分的方法，由此该液体是啤酒，葡萄酒，果汁，细菌悬浮液，血液，乳汁，酶悬浮液等。根据本发明 ，待处理的流体被供给穿过具有孔结构的非对称膜，使得膜的进料侧上的孔大于标称孔径，并且在朝向渗透侧的横截面中发生标称孔径的孔 ，滤出的组分从膜反冲洗并随后用流体带走。 标称孔径通常为0.1-5.0μm，优选为0.2-1.0μm。 膜可以是管状，扁平或毛细管。 反冲洗间歇性发生，频率为1秒至10分钟，时间为0.1-1秒，反作用力为0.5-5巴。 进料速度优选低于2m / s，膜上的压力差小于0.5巴。