公开(公告)号：DE59905742D1

公开(公告)日：2003-07-03

申请号：DE59905742

申请日：1999-03-11

Applicant: BASF AG

Inventor： TEICH FRIEDHELM ,  SCHELLING HEINER ,  KOESTER HERBERT ,  KRATZER HORST ,  REICHERT WOLFGANG ,  GALL MARTIN ,  ZIEGLER BERND

IPC: B01D12/00 ,  B01J13/00 ,  C01B33/158 ,  F26B7/00 ,  F26B17/14 ,  F26B21/14

Abstract: In a process for drying microporous, fluid-containing particles, the fluid-containing particles to be dried are fed as a moving bed countercurrently to a drying fluid, the interfacial tension of the fluid being reduced in comparison with the interfacial tension of the fluid at room temperature, at near-critical to supercritical pressure of the fluid, preferably to a value in the range from 0 to 1/10, in particular from 0 to 1/20, of the interfacial tension at room temperature. Furthermore, microporous, three-dimensionally networked particles are prepared by a process comprising preparation of microporous particles containing pore liquid, exchange of the pore liquid in the particles for a fluid and drying of the fluid-containing particles, the exchange and drying being carried out in the moving bed by the countercurrent method.