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公开(公告)号：US3708277A
公开(公告)日：1973-01-02
申请号：US3708277D
申请日：1970-01-27
Applicant: BASF AG
IPC: C07D285/16 , A01N9/22
CPC classification number: C07D285/16
Abstract: DIAZINONE DIOXIDES AND A METHOD OF CONTROLLING UNWANTED PLANTS.
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2.发明授权Process for the recovery of mercury from the brine filter sludge obtained in the electrolysis of alkali metal chlorides by the amalgam process 失效通过AMALGAM工艺在碱性金属氯化物电解中获得的铜过滤器中的汞回收工艺
公开(公告)号：US3755110A
公开(公告)日：1973-08-28
申请号：US3755110D
申请日：1971-03-15
Applicant: BASF AG
Abstract: Process for the recovery of mercury from the brine filter sludge of alkali-chlorine cells. The brine filter sludge is treated with solutions containing active chlorine for the extraction of mercury or its compounds. Insoluble impurities are filtered off, and the resulting mercuric filtrate is passed to the electrolytic cell where the dissolved mercury is reduced to metal at the cathode under the operating conditions of the cell. Metallic mercury may also be recovered from the filtrate with the aid of sodium amalgam.
Abstract translation: 从碱氯电池的盐水过滤污泥中回收汞的工艺。
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公开(公告)号：US3756930A
公开(公告)日：1973-09-04
申请号：US3756930D
申请日：1971-06-28
Applicant: BASF AG
CPC classification number: C25B1/26
Abstract: AQUEOUS HYDROCHLORIC ACID IS ELECTROLYZED IN A DIAPHRAGM CELL TO RECOVER CHLORINE AND HYDROGEN THEREFROM. THE ACID TO BE ELCTROLYZED SHOULD HAVE A CONCENTRATION OF FROM 18 TO 28% BY WEIGHT OF HCL AND SHOULD BE DEGRADED BY NOT MORE THAN 2% BY WEIGHT DURING ITS PASSAGE THROUGH THE CELL. THE MEAN TEMPERATURE IN THE CELL IS KEPT AT FROM 75* TO 90*C.
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