公开(公告)号：US3836675A

公开(公告)日：1974-09-17

申请号：US27243672

申请日：1972-07-17

申请人： KNAPSACK AG

发明人： HARTLAPP G ,  HAAS H ,  STENDENBACH K

IPC分类号： C01B25/047 ,  C01B25/02 ,  C01B25/04

CPC分类号： C01B25/047

摘要： PURIFICATION OF YELLOW PHOSPHORUS, PHOSPHORUS IS MIXED IN A MIXING ZONE WITH BETWEEN 0.5 AND 5 WEIGHT PERCENT OF AN AQUEOUS SUSPENSION OF ACTIVE CARBON CONTAINING BETWEEN 50 AND 500 KG./CUBIC METER OF ACTIVE CARBON, THE PERCENTAGES BEING BASED ON PHOSHORUS, THE ACTIVE CARBON AND THE PHOSPHORUS ARE ALLOWED TO REMAIN IN CONTACT WITH ONE ANOTHER FOR A PERIOD OF TIME BETWEEN 0.5 AND 15 MINUTES, AND THE PHOSPHORUS IS FILTERED IN A FILTRATION ZONE AS AS TO SEPARATE THE ACTIVE CARBON THEREFROM.

公开(公告)号：US3780164A

公开(公告)日：1973-12-18

申请号：US3780164D

申请日：1971-07-09

申请人： KNAPSACK AG

发明人： MULLER F ,  STENDENBACH K ,  SCHRODTER H ,  HARTLAPP G ,  FORST W

IPC分类号： C01B25/047 ,  C01B25/02 ,  C01B25/04

CPC分类号： C01B25/047

摘要： PURIFICATION OF YELLOW PHOSPHORUS, WHICH MAY HAVE BEEN PRODUCED BY ELECTROTHERMAL MEANS, BY INTIMATELY MIXING LIQUID PHOSPHORUS WITH SULFURIC ACID. A PHOSPHORUS/SULFURIC ACID-MIXTURE COMING FROM A STIRRING ZONE IS CONVEYED TO A HEATED SEPARATING ZONE, IN WHICH THE MIXTURE IS SEPARATED, AT A TEMPERATURE AT LEAST AS HIGH AS THE MELTING POINT OF PHOSPHORUS, INTO AN UPPER LAYER OF LIQUID PHOSPHORUS AND A LOWER LAYER OF SULFURIC ACID; THE TWO LAYERS ARE COOLED DOWN TO A TEMPERATURE LOWER THAN THE MELTING POINT OF PHOSPHORUS AND THE LOWER LAYER OF SULFURIC ACID IS DISCHARGED; THE UPPER LAYER OF SOLIDIFIED PHOSPHORUS IS MELTED BY SUPPLYING HEAT THERETO AND DELIVERED TO A WASH ZONE, IN WHICH THE PHOSPHORUS IS WATER-WASHED AND FREED FROM ADHERING SULFURIC ACID.