发明授权
- 专利标题： Process for the preparation of anhydrous sodium sulfide
- 专利标题（中）： 无水硫化钠的制备方法
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申请号： US09633268申请日： 2000-08-04
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公开(公告)号： US06503474B1公开(公告)日： 2003-01-07
- 发明人: Robert Magiera , Hans Christian Alt , Gerhard Rasig , Jörg Münzenberg , Christoph Batz-Sohn , Ralf Goedecke , Ulrich Deschler , Volker Knapp , Karl-Heinz Rützel
- 申请人： Robert Magiera , Hans Christian Alt , Gerhard Rasig , Jörg Münzenberg , Christoph Batz-Sohn , Ralf Goedecke , Ulrich Deschler , Volker Knapp , Karl-Heinz Rützel
- 优先权： DE19755760 19971216
- 主分类号： C01B1722
- IPC分类号： C01B1722
摘要：
A process is disclosed for the preparation of anhydrous sodium sulfide by heating sodium sulfide having a water content of from 38 to 40% in a contact drier in vacuo, the temperature of the solid to be dried being increased from approximately 20° C. at the solid inlet to ≧180° C. at the solid outlet.
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