METHOD FOR REMOVAL OF ORGANIC COMPOUNDS FROM WASTE WATER STREAMS IN A PROCESS FOR PRODUCTION OF (METH)ACRYLIC ACID

METHOD FOR REMOVAL OF ORGANIC COMPOUNDS FROM WASTE WATER STREAMS IN A PROCESS FOR PRODUCTION OF (METH)ACRYLIC ACID

The present invention provides a method for removal of organic compounds, such as acetic acid, from waste water streams in processes for production of (meth)acrylic acid. In particular, a mixed product gas, comprising (meth)acrylic acid, acetic acid, propylene and acrolein, is subjected to fractiona...

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Hauptverfasser: CHARENDOFF, MARC, JULIETTE, JAMES J, SHAH, RAJESH, MENDOZA, JOY
Format: Patent
Sprache:eng ; fre
Schlagworte:
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
TRANSPORTING
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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creator CHARENDOFF, MARC
JULIETTE, JAMES J
SHAH, RAJESH
MENDOZA, JOY
description The present invention provides a method for removal of organic compounds, such as acetic acid, from waste water streams in processes for production of (meth)acrylic acid. In particular, a mixed product gas, comprising (meth)acrylic acid, acetic acid, propylene and acrolein, is subjected to fractional absorption to produce an aqueous product stream comprising (meth)acrylic acid, water and acetic acid, and an absorber off-gas stream comprising propylene and acrolein. The aqueous product stream is distilled to produce a purified (meth)acrylic acid stream and a waste water stream comprising water and acetic acid. The absorber off gas is then contacted with the waste water stream and at least a portion of the acetic acid moves from the waste water stream to the absorber off gas to produce a stripped waste water stream and an enriched absorber off gas.
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In particular, a mixed product gas, comprising (meth)acrylic acid, acetic acid, propylene and acrolein, is subjected to fractional absorption to produce an aqueous product stream comprising (meth)acrylic acid, water and acetic acid, and an absorber off-gas stream comprising propylene and acrolein. The aqueous product stream is distilled to produce a purified (meth)acrylic acid stream and a waste water stream comprising water and acetic acid. 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subjects ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
TRANSPORTING
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
title METHOD FOR REMOVAL OF ORGANIC COMPOUNDS FROM WASTE WATER STREAMS IN A PROCESS FOR PRODUCTION OF (METH)ACRYLIC ACID
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