CONTROL OF A PROCESS FOR THE PURIFICATION OF METHACRYLIC ACID USING ON-LINE NEAR IR ANALYSIS

• 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
• Language: English; Korean
• Published: 10.10.2016
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; APPARATUS THEREFOR; CHEMISTRY; GENERAL METHODS OF ORGANIC CHEMISTRY; METALLURGY; ORGANIC CHEMISTRY

1종 이상의 (메트)아크릴산 전구체(예컨대, 프로필렌)를 기상 산화반응시킨 후, 제1 탈수 조작을 수행하고 나서, 탈수된 반응 생성물을 농축시키는 단계를 포함하는 공업 등급 (메트)아크릴산(예컨대, 아크릴산)의 제조법에 대한 개선된 방법으로, 상기 개선된 방법은 반응 생성물을 정제하는 동안 반응 생성물 내 물의 함량, 아세트산의 함량 및 (메트)아크릴산의 함량 중 적어도 하나를 온라인 근적외선 분광법을 이용하여 제어하는 것을 포함한다. 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.