发明公开
- 专利标题: VERFAHREN ZUR TROCKNUNG UND HERSTELLUNG VON MIKROPORÖSEN TEILCHEN
- 专利标题(英): Method for drying and producing microporous particles
- 专利标题(中): 工艺干燥和制备微孔颗粒
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申请号: EP99913251.7申请日: 1999-03-11
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公开(公告)号: EP1062014A1公开(公告)日: 2000-12-27
- 发明人: TEICH, Friedhelm , SCHELLING, Heiner , KÖSTER, Herbert , KRATZER, Horst , REICHERT, Wolfgang , GALL, Martin , ZIEGLER, Bernd
- 申请人: BASF AKTIENGESELLSCHAFT
- 申请人地址: 67056 Ludwigshafen DE
- 专利权人: BASF AKTIENGESELLSCHAFT
- 当前专利权人: BASF AKTIENGESELLSCHAFT
- 当前专利权人地址: 67056 Ludwigshafen DE
- 代理机构: Isenbruck, Günter, Dr.
- 优先权: DE19810565 19980311
- 国际公布: WO9946023 19990916
- 主分类号: B01D12/00
- IPC分类号: B01D12/00 ; C01B33/158
摘要:
A method for drying and producing microporous particles containing fluid. The fluid-containing particles that are to be dried are transported in the form of a moving-bed in a counter-flow to a drying fluid. When the pressure of the fluid becomes near critical or supercritical, the interfacial tension of said fluid is reduced, preferably to a value ranging from 0-1/10, especially from 0-1/20 of the interfacial tension at room temperature. The invention also relates to a method for the production of microporous, cross-linked particles by producing microporous fluid-containing particles, replacing the porous fluid contained in said particles with a fluid and by drying the particles containing the liquid. Fluid replacement and drying is carried out in a moving bed in a counterflow.
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