Process for purification of (meth) acrylic acid using on-line near IR analysis

Process for 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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Bibliographische Detailangaben
Hauptverfasser: HO FUNGAU, ROUNDY ROGER L, ETZKORN WILLIAM G, LIGON TIMOTHY D, FRUCHEY OLAN S, REEVES CHRISTOPHER T, JAWAID MAHMOOD N A, WIEGAND PATRICK M
Format: Patent
Sprache:chi ; eng
Schlagworte:
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
METALLURGY
ORGANIC CHEMISTRY
PHYSICS
TESTING
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Beschreibung
Zusammenfassung: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, acetic acid and (meth)acrylic acid content of the reaction product during the purification of the reaction product using on-line near IR spectroscopy.