公开(公告)号：WO2008054207A8

公开(公告)日：2008-12-31

申请号：PCT/NL2007050524

申请日：2007-10-31

Applicant: TNO ,  ASSINK JAN WILLEM ,  HANEMAAIJER JAN HENDRIK ,  JANSEN ALBERT EDWARD ,  VAN MEDEVOORT JOLANDA ,  DE JONG HANS ,  VAN SONSBEEK ERIC ,  KOELE ENGELBERT PETER JURRIE J

Inventor： ASSINK JAN WILLEM ,  HANEMAAIJER JAN HENDRIK ,  JANSEN ALBERT EDWARD ,  VAN MEDEVOORT JOLANDA ,  DE JONG HANS ,  VAN SONSBEEK ERIC ,  KOELE ENGELBERT PETER JURRIE JAN

IPC: B01D61/36 ,  B01D63/00 ,  B01D63/08 ,  C02F1/04 ,  C02F1/44

CPC classification number: B01D61/364 ,  B01D1/0035 ,  B01D1/0058 ,  B01D1/2881 ,  B01D5/0012 ,  B01D5/006 ,  B01D5/0072 ,  B01D63/082 ,  B01D2313/143 ,  B01D2313/24 ,  B01D2313/38 ,  B01D2319/04 ,  C02F1/048 ,  C02F1/447 ,  C02F2103/08 ,  Y02A20/128 ,  Y02A20/131 ,  Y02A20/212

Abstract: The invention provides a method for the purification of a liquid by membrane distillation comprising: passing a heated vapourising stream of a liquid (retentate stream) through a retentate channel along a porous hydrophobic membrane (10), whereby vapour of the liquid flows via the pores of the membrane to the other side of said membrane, and condensing said vapour on the other side of said membrane to give a distillate stream in a distillate channel (5) which distillate is created by passing the heat of condensation (latent heat) towards a condenser surface (3), said condenser surface forming a non-porous separation between a feed stream of the liquid to be purified and said distillate stream, which feed stream is passed through a feed channel (2) in counter-current with the retentate stream, in which feed channel a space material (4) is arranged whereby at least part of the latent heat is transferred via the condenser surface to the feed stream, and whereby a positive liquid pressure difference is applied between the retentate stream and the feed stream at the corresponding points of the retentate channel and the feed channel over at least a part of each of the retentate channel (9) and feed channel. The invention further provides an apparatus suitable for use in said method.

Abstract translation: 本发明提供了一种通过膜蒸馏纯化液体的方法，包括：使液体（滞留物流）的加热蒸发流沿着多孔疏水膜（10）通过渗余物通道，由此液体的蒸汽经由孔 将所述膜的另一侧上的所述蒸气冷凝，以在馏出物通道（5）中得到馏出物流，所述馏出物通过将冷凝热量（潜热）传递至所述膜的另一侧 冷凝器表面（3），所述冷凝器表面在待净化液体的进料流与所述馏出物流之间形成无孔分离，所述进料流与滞留物流逆流地通过进料通道（2） ，其中在所述供给通道中布置空间材料（4），由此至少部分潜热经由所述冷凝器表面转移到所述供给流，并且由此正的液体压力 在滞留物通道（9）和进料通道中的每一个的至少一部分上的滞留物通道和进料通道的相应点处的滞留物流和进料流之间施加差异。 本发明还提供了适用于所述方法的设备。