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公开(公告)号：JPH11236204A
公开(公告)日：1999-08-31
申请号：JP35468098
申请日：1998-12-14
Applicant: DEGUSSA
Inventor： MAGIERA ROBERT DR , ALT CHRISTIAN HANS , RASIG GERHARD , MUENZENBERG JOERG , BATZ-SOHN CHRISTOPH DR , GOEDECKE RALF DR , DESCHLER ULRICH , KNAPP VOLKER , RUETZEL KARL-HEINZ
IPC: C01B17/38
Abstract: PROBLEM TO BE SOLVED: To prevent undesirable fusing of a dehydrated substance and to obtain an anhydride product by passing sodium sulfate having a specified water content through a device, continuously raising the temp. of the device from the entrance to the exit, and maintaining low pressure. SOLUTION: Sodium sulfide having 35 to 45% water content, especially 38 to 40% is carried by mixing and passing through a device. The temp. of the Na2 S hydrate supplied to the device (product temp.) is continuously increased in such a manner that the temp. is about 20 deg.C at the supply position of the solid and >180 deg.C at the exit of the solid. At the same time, low pressure as =90 min residential time in the drying device.
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公开(公告)号：CZ9804045A3
公开(公告)日：1999-11-17
申请号：CZ404598
申请日：1998-12-09
Applicant: DEGUSSA
Inventor： MAGIERA ROBERT DR , ALT HANS CHRISTIAN , RASIG GERHARD , MUNZENBERG JORG DR , BATZ-SOHN CHRISTOPH DR , GOEDECKE RALF DR , DESCHLER ULRICH DR , KNAPP VOLKER , RUTZEL KARL-HEINZ
IPC: C01B17/38
CPC classification number: C01B17/38
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公开(公告)号：PL193298B1
公开(公告)日：2007-01-31
申请号：PL33030398
申请日：1998-12-15
Applicant: DEGUSSA
Inventor： MAGIERA ROBERT , ALT HANS CHRISTIAN , RASIG GERHARD , MUENZENBERG JOERG , BATZ-SOHN CHRISTOPH , GOEDECKE RALF , DESCHLER ULRICH , KNAPP VOLKER , RUETZEL KARL-HEINZ
IPC: C01B17/38
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公开(公告)号：ES2198636T3
公开(公告)日：2004-02-01
申请号：ES98122604
申请日：1998-11-27
Applicant: DEGUSSA
Inventor： MAGIERA ROBERT DR , ALT CHRISTIAN , RASIG GERHARD , MUNZENBERG JORG DR , BATZ-SOHN CHRISTOPH DR , GOEDECKE RALF DR
IPC: C01B17/38
Abstract: 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.
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公开(公告)号：CZ404598A3
公开(公告)日：1999-11-17
申请号：CZ404598
申请日：1998-12-09
Applicant: DEGUSSA
Inventor： MAGIERA ROBERT DR , ALT HANS CHRISTIAN , RASIG GERHARD , MUNZENBERG JORG DR , BATZ-SOHN CHRISTOPH DR , GOEDECKE RALF DR , DESCHLER ULRICH DR , KNAPP VOLKER , RUTZEL KARL-HEINZ
IPC: C01B17/38
Abstract: 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.
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Patent Agency Ranking
公开(公告)号：PL330303A1
公开(公告)日：1999-06-21
申请号：PL33030398
申请日：1998-12-15
Applicant: DEGUSSA
Inventor： MAGIERA ROBERT , ALT HANS CHRISTIAN , RASIG GERHARD , MUENZENBERG JOERG , BATZ-SOHN CHRISTOPH , GOEDECKE RALF , DESCHLER ULRICH , KNAPP VOLKER , RUETZEL KARL-HEINZ
Abstract: 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.
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公开(公告)号：PT924165E
公开(公告)日：2003-11-28
申请号：PT98122604
申请日：1998-11-27
Applicant: DEGUSSA
Inventor： MUNZENBERG JORG , ULRICH DESCHLER DR , ROBERT MAGIERA DR , ALT CHRISTIAN , RASIG GERHARD , CHRISTOPH BATZ-SOHN DR , RALF GOEDECKE DR , KNAPP VOLKER , RUTZEL KARL-HEINZ
IPC: C01B17/38
Abstract: 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.
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公开(公告)号：SK170398A3
公开(公告)日：1999-12-10
申请号：SK170398
申请日：1998-12-11
Applicant: DEGUSSA
Inventor： MAGIERA ROBERT , ALT HANS-CHRISTIAN , RASIG GERHARD , MUNZENBERG JORG , BATZ-SOHN CHRISTOPH , GOEDECKE RALF , DESCHLER ULRICH , KNAPP VOLKER , RUTZEL KARL-HEINZ
Abstract: 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.
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公开(公告)号：DE19755760A1
公开(公告)日：1999-06-24
申请号：DE19755760
申请日：1997-12-16
Applicant: DEGUSSA
Inventor： 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
IPC: C01B17/38
Abstract: 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.
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公开(公告)号：ID21469A
公开(公告)日：1999-06-17
申请号：ID981623
申请日：1998-12-14
Applicant: DEGUSSA
Inventor： MAGIERA ROBERT , ALT HANS CHRISTIAN , RASIG GERHARD , MUNZENBERG JORG , BATZ-SOHN CHRISTOPH , GOEDECKE RALF , DESCHLER ULRICH , KNAPP VOLKER , RUTZEL KARL-HEINZ
IPC: C01B17/38
Abstract: 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.
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