In the production of anhydrous sodium sulfide, sodium sulfide containing 35-45% water with mixing is passed through an apparatus, in which the product temperature of approximately 20 degrees C at the place of solid injection gradually rises to at least 180 degrees C while the subpressure is maintained at less than 20, preferably less than 11 torr.
申请公布号
EP0924165(A1)
申请公布日期
1999.06.23
申请号
EP19980122604
申请日期
1998.11.27
申请人
DEGUSSA-HUELS AKTIENGESELLSCHAFT
发明人
MAGIERA, ROBERT DR.;ALT, CHRISTIAN;RASIG, GERHARD;MUENZENBERG, JOERG DR.;BATZ-SOHN, CHRISTOPH DR.;GOEDECKE, RALF DR.;DESCHLER, ULRICH DR.;KNAPP, VOLKER;RUETZEL, KARL-HEINZ