Control of a process for the purification of (meth) acrylic acid using on-line, near ir analysis

An improved process for the manufacture of technical grade (meth)acrylic acid, e.g., acrylic acid, the process comprising producing a hydrated reaction product from the gas-phase oxidation of at least one (meth)acrylic acid precursor, e.g., propylene, followed by first dehydrating and then concentra...

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Main Authors HO FUNGAU, JAWAID MAHMOOD N. A, ROUNDY ROGER L, ETZKORN WILLIAM G, LIGON TIMOTHY D, FRUCHEY OLAN S, REEVES CHRISTOPHER T, WIEGAND PATRICK M
Format Patent
LanguageChinese
English
Published 31.08.2011
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Summary:An improved process for the manufacture of technical grade (meth)acrylic acid, e.g., acrylic acid, the process comprising producing a hydrated reaction product from the gas-phase oxidation of at least one (meth)acrylic acid precursor, e.g., propylene, followed by first dehydrating and then concentrating the reaction product, the improvement comprising controlling at least one of the water, aceticacid and (meth)acrylic acid content of the reaction product during the purification of the reaction product using on-line, near IR spectroscopy.
Bibliography:Application Number: CN200980139751