RECOVERY OF ACETIC ACID FROM DILUTE AQUEOUS STREAMS FORMED DURING A CARBONYLATION PROCESS

A METHOD IS PROVIDED TO IMPROVE THE QUALITY OF RECYCLE OF CERTAIN RESIDUES BY MODIFYING THE SEPARATION OF ALKANES AND ALKANE-LIKE MATERIA1S AND CARBONYL-CONTAINING IMPURITIES FROM THE RECYCLE DURING THE MANUFACTURE OF ACETIC ACID BY THE CARBONYLATION OF METHANOL. THE IMPROVEMENT COMPRISES PARTITIONI...

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Bibliographische Detailangaben
Hauptverfasser:	MARK O SCATES, STEVEN E PARKER, RUSSELL K GIBBS, JENNIFER B LACY
Format:	Patent
Sprache:	eng
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY METALLURGY ORGANIC CHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	A METHOD IS PROVIDED TO IMPROVE THE QUALITY OF RECYCLE OF CERTAIN RESIDUES BY MODIFYING THE SEPARATION OF ALKANES AND ALKANE-LIKE MATERIA1S AND CARBONYL-CONTAINING IMPURITIES FROM THE RECYCLE DURING THE MANUFACTURE OF ACETIC ACID BY THE CARBONYLATION OF METHANOL. THE IMPROVEMENT COMPRISES PARTITIONING THE RESIDUES BY THE ADDITJON OF WATER OBTAINED FROM AQUEOUS STREAMS CONTAINING UP TO 50 WT ACETIC ACID AND WHICH HAVE BEEN TREATED IN A CATALYTIC DISTILLATION URUT TO REACT THE ACETIC ACID WITH METHANOL TO FORM RECYCLABLE METHYL ACETATE AND WATER AND WHEREIN THE WATER IS SEPARATED FROM THE ORGANJCS BY DISTILLATION. (FIG. 2)