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公开(公告)号：DD218880A5
公开(公告)日：1985-02-20
申请号：DD26241384
申请日：1984-04-27
Applicant: HOECHST AG
Inventor： KUXDORF BERNHARD , LUHR PETER , WERNER HUGO , THUEMMLER URSUS , DORN FRIEDRICH-WILHELM
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公开(公告)号：NO842294A
公开(公告)日：1984-12-10
申请号：NO842294
申请日：1984-06-07
Applicant: HOECHST AG
Inventor： JOEDDEN KLAUS , DORN FRIEDRICH-WILHELM , HEYMER GERO , STEPHAN HANS-WERNER
CPC classification number: C22B34/1209
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公开(公告)号：DD209745A5
公开(公告)日：1984-05-23
申请号：DD25018483
申请日：1983-04-25
Applicant: HOECHST AG
Inventor： WOLTER MANFRED , DORN FRIEDRICH-WILHELM , HEYMER GERO , STEPHAN HANS-WERNER
Abstract: The disclosure relates to a process for the discontinuous separation of a solid consisting predominantly of carbon black from its aqueous suspension by filtration. To this end, the disclosure provides for use to be made of a tube pressure filter which is operated under a final pressure of 30 to 100 bars.
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公开(公告)号：CA1158023A
公开(公告)日：1983-12-06
申请号：CA363740
申请日：1980-10-31
Applicant: HOECHST AG
Inventor： JODDEN KLAUS , DORN FRIEDRICH-WILHELM , HEYMER GERO , STEPHAN HANS-WERNER
IPC: B01D53/46 , C01B25/027 , B01D53/34
Abstract: PROCESS FOR REMOVING PHOSPHORUS IN VAPOR FORM AND PHOSPHANES FROM GAS MIXTURES Phosphorus in vapor form and phosphanes are separated from gas mixtures which consist of carbon monoxide, with or without hydrogen, nitrogen and steam. Concerned are more particularly the off-gases of phosphorus-producing furnaces. To this end, the gas mixture is admixed with at least the stoichiometric amount of oxygen and/or of oxygen-containing gases necessary to achieve conversion of the total phosphorus contained in the gas mixture to oxidation level V. The resulting mixture is introduced into a reaction zone maintained at a temperature within the range 200 to 700.degree. C and allowed to remain therein over a period of 0.5 to 20 seconds. Resulting phosphorus-V compounds are finally separated from the gas mixture.
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