Process for separating and purifying substances by melt crystallisation at high pressures
摘要
In the process for separating or purifying substances by crystallisation from melts or highly concentrated solutions at elevated pressures, gas is dissolved in the crystallising melt which outgasses again after crystallisation when the pressure is decreased. As a result, impurities which are still adhering or enclosed are removed.
申请公布号
DE4313101(C1)
申请公布日期
1994.08.11
申请号
DE19934313101
申请日期
1993.04.22
申请人
HOECHST AG, 65929 FRANKFURT, DE
发明人
STEINER, RUDOLF, PROF. DR., 91056 ERLANGEN, DE;KOENIG, AXEL, DR., 70374 STUTTGART, DE;RITTNER, SIEGBERT, DR., 64546 MOERFELDEN-WALLDORF, DE