METHOD FOR SEPARATING MALEIC ANHYDRIDE FROM MIXTURES CONTAINING THE SAME BY MEANS OF STRIPPING

The invention relates to a method for separating maleic anhydride from a gas flow containing maleic anhydride. According to said method: a) the gas flow containing maleic anhydride is brought into contact with a liquid absorbent phase containing at least one high-boiling inert absorption agent for m...

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Bibliographische Detailangaben
Hauptverfasser:	STEINIGER MICHAEL, HAFFNER BEATRIX, KNAPPIK PETER, WECK ALEXANDER, WINDECKER GUNTHER, BENDER BIANCA, PIERRE BERNARD, VANDEN HAUTTE DANY, BREDEHOEFT JAN PETER
Format:	Patent
Sprache:	eng
Schlagworte:	PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION TRANSPORTING
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Beschreibung
Zusammenfassung:	The invention relates to a method for separating maleic anhydride from a gas flow containing maleic anhydride. According to said method: a) the gas flow containing maleic anhydride is brought into contact with a liquid absorbent phase containing at least one high-boiling inert absorption agent for maleic anhydride, and b) maleic anhydride is separated from the obtained liquid absorbate phase by stripping in a column using hydrogenous gas as a stripping agent. The invention is characterised in that the stripping agent is supplied to the column at two points separated by at least one theoretical separating stage.