发明名称 |
Membrane distillation method for the purification of a liquid |
摘要 |
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 over a porous membrane, 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 which distillate is created by passing the heat of condensation (latent heat) towards a condenser surface, 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 in counter-current with the retentate stream, whereby at least part of the latent heat is transferred via the condenser surface to the feed stream, characterised in that, 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 and feed channel. The invention further provides an apparatus suitable for use in said method.
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申请公布号 |
EP1925355(A1) |
申请公布日期 |
2008.05.28 |
申请号 |
EP20060076956 |
申请日期 |
2006.10.31 |
申请人 |
NEDERLANDSE ORGANISATIE VOOR TOEGEPAST- NATUURWETENSCHAPPELIJK ONDERZOEK TNO |
发明人 |
HANEMAAIJER, JAN HENDRIK;JANSEN, ALBERT EDWARD;VAN MEDEVOORT, JOLANDA;DE JONG, HANS;VAN SONSBEEK, ERIC;KOELE, ENGELBERT PETER JURRIE JAN;ASSINK, JAN WILLEM |
分类号 |
B01D61/36;B01D63/00;C02F1/04;C02F1/44;C02F103/08 |
主分类号 |
B01D61/36 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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