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    • 52. 发明授权
    • Process for the production of acrylic acid
    • 丙烯酸生产工艺
    • US07294741B2
    • 2007-11-13
    • US10498852
    • 2002-12-13
    • Gunther BubJurgen MoslerDietrich MaschmeyerAndreas SabbaghRoland FornikaMatthias Peuckert
    • Gunther BubJurgen MoslerDietrich MaschmeyerAndreas SabbaghRoland FornikaMatthias Peuckert
    • C07C51/16
    • C07C51/252C07C57/04
    • The present invention relates to a process for the production of acrylic acid (AA) comprising the steps wherein: a) a 1st gas mixture comprising propylene, oxygen, an inert gas and steam is subjected to a 1st catalytic oxidation reaction stage thereby converting the propylene in the presence of a catalyst mainly into acrolein being contained in a 2nd gas mixture from said 1st catalytic oxidation reaction, b) said 2nd gas mixture from the 1st catalytic oxidation reaction stage is subjected to a 2nd catalytic oxidation reaction stage thereby converting the acrolein in the presence of a catalyst mainly into AA, being contained in a product gas, c) said product gas is subjected to a quench tower, wherein said AA is recovered as an aqueous solution comprising said AA being contained in the process water, wherein a process vent gas is obtained at the top of said quench tower, wherein, said 1st gas mixture has a steam/propylene ratio of >0.3 and
    • 本发明涉及一种生产丙烯酸(AA)的方法,包括以下步骤:a)将包含丙烯,氧气,惰性气体和蒸汽的第一气体混合物进行第一催化氧化反应阶段,由此将丙烯 在主催化剂存在下,由所述第一催化氧化反应产生的第二气体混合物中含有丙烯醛,b)将来自第一催化氧化反应阶段的所述第二气体混合物进行第二催化氧化反应阶段,由此将丙烯醛转化为 催化剂主要以AA形式存在于产物气体中,c)将所述产物气体进行骤冷塔,其中所述AA作为包含所述AA的水溶液被回收,所述水溶液包含在工艺用水中,其中过程 在所述骤冷塔的顶部获得排出气体,其中所述第一气体混合物具有> 0.3和<2的蒸汽/丙烯比,并且所述处理水的量为 s或等于从骤冷塔抽出的所述水溶液中的水量。