Invention Grant
US08299299B2 Process for separating acrylic acid present as a main constituent and glyoxal present as a by-product in a product gas mixture of a partial heterogeneously catalyzed gas phase oxidation of a C3 precursor compound of acrylic acid
有权
用于分离作为主要成分存在的丙烯酸和乙二醛作为副产物存在于丙烯酸的C3前体化合物的部分非均相催化气相氧化的产物气体混合物中
- Patent Title: Process for separating acrylic acid present as a main constituent and glyoxal present as a by-product in a product gas mixture of a partial heterogeneously catalyzed gas phase oxidation of a C3 precursor compound of acrylic acid
- Patent Title (中): 用于分离作为主要成分存在的丙烯酸和乙二醛作为副产物存在于丙烯酸的C3前体化合物的部分非均相催化气相氧化的产物气体混合物中
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Application No.: US12509078Application Date: 2009-07-24
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Publication No.: US08299299B2Publication Date: 2012-10-30
- Inventor: Till Blum , Peter Zurowski , Steffen Rissel , Sylke Haremza , Thorsten Friese , Ulrich Jaeger , Volker Schliephake , Klaus Joachim Mueller-Engel , Ulrich Hammon , Joerg Heilek , Imke Britta Mueller
- Applicant: Till Blum , Peter Zurowski , Steffen Rissel , Sylke Haremza , Thorsten Friese , Ulrich Jaeger , Volker Schliephake , Klaus Joachim Mueller-Engel , Ulrich Hammon , Joerg Heilek , Imke Britta Mueller
- Applicant Address: DE Ludwigshafen
- Assignee: BASF SE
- Current Assignee: BASF SE
- Current Assignee Address: DE Ludwigshafen
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: DE102008040799 20080728; DE102008041573 20080826
- Main IPC: C07C51/42
- IPC: C07C51/42
Abstract:
A process for separating acrylic acid present as a main product and glyoxal present as a by-product in a product gas mixture of a partial gas phase oxidation of a C3 precursor compound, in which a liquid phase P is obtained, which consists of acrylic acid to an extent of at least 70% of its weight and, based on the molar amount of acrylic acid present therein, comprises at least 200 molar ppm of glyoxal, in which the glyoxal is separated from the acrylic acid in the liquid phase P by crystallization.
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