摘要 |
<p>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.</p> |
申请人 |
BASF AKTIENGESELLSCHAFT |
发明人 |
TEICH, FRIEDHELM;SCHELLING, HEINER;KOESTER, HERBERT;KRATZER, HORST;REICHERT, WOLFGANG;GALL, MARTIN;ZIEGLER, BERND |