PROCESS FOR SEPARATING OFF MALEIC ANHYDRIDE FROM MIXTURES COMPRISING MALEIC ANHYDRIDE BY STRIPPING

PROCESS FOR SEPARATING OFF MALEIC ANHYDRIDE FROM MIXTURES COMPRISING MALEIC ANHYDRIDE BY STRIPPING

THE INVENTION RELATES TO A PROCESS FOR SEPARATING OFF MALEIC ANHYDRIDE FROM A GAS STREAM COMPRISING MALEIC ANHYDRIDE, IN WHICH A) THE GAS STREAM COMPRISING MALEIC ANHYDRIDE IS BROUGHT INTO CONTACT WITH A LIQUID ABSORBENT PHASE COMPRISING AT LEAST ONE HIGH-BOILING INERT ABSORPTION MEDIUM FOR MALEIC A...

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Bibliographische Detailangaben
Hauptverfasser: CARDONE,BIANCA, BREDEHOFT, JAN PETER, WINDECKER,GUNTHER, WECK,ALEXANDER, KNAPPIK,PETER, PIERRE,BERNARD, VANDEN HAUTTE,DANY, DR.STEINIGER,MICHAEL, HAFFNER,BEATRIX
Format: Patent
Sprache:eng
Schlagworte:
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
TRANSPORTING
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Zusammenfassung:THE INVENTION RELATES TO A PROCESS FOR SEPARATING OFF MALEIC ANHYDRIDE FROM A GAS STREAM COMPRISING MALEIC ANHYDRIDE, IN WHICH A) THE GAS STREAM COMPRISING MALEIC ANHYDRIDE IS BROUGHT INTO CONTACT WITH A LIQUID ABSORBENT PHASE COMPRISING AT LEAST ONE HIGH-BOILING INERT ABSORPTION MEDIUM FOR MALEIC ANHYDRIDE AND B) MALEIC ANHYDRIDE IS SEPARATED OFF FROM THE RESULTING LIQUID ABSORBATE PHASE BY STRIPPING WITH A HYDROGEN-COMPRISING GAS AS STRIPPING MEDIUM IN A COLUMN, WHEREIN THE STRIPPING MEDIUM IS FED IN AT TWO POINTS ON THE COLUMN WHICH ARE AT LEAST ONE THEORETICAL PLATE APART.