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1. 发明授权

US07632968B2 Method for producing (meth) acrylic acid 有权
标题翻译：（甲基）丙烯酸的制造方法
公开(公告)号：US07632968B2
公开(公告)日：2009-12-15
申请号：US11192223
申请日：2005-07-28
申请人： Seong Pil Kang , Seok Hwan Choi , Kyoung Su Ha , Jun Seok Ko , Young Bae Kim , Boo Gon Woo , Min Jeong Park
发明人： Seong Pil Kang , Seok Hwan Choi , Kyoung Su Ha , Jun Seok Ko , Young Bae Kim , Boo Gon Woo , Min Jeong Park
IPC分类号： C07C51/42
CPC分类号： C07C51/44 , C07C51/48 , C07C57/04
摘要： Disclosed is a method for producing (meth)acrylic acid comprising a process of recovering (meth)acrylic acid as aqueous (meth)acrylic acid solution from a (meth)acrylic acid-containing gas mixture produced by the catalytic gas phase oxidation of at least one reactant selected from the group consisting of propane, propylene, isobutylene and (meth)acrolein, wherein the recovering process comprises the steps of: (1) feeding the (meth)acrylic acid-containing gas mixture into a quenching tower and condensing it in the quenching tower so as to recover an aqueous (meth)acrylic acid solution from the bottom of the quenching tower, in which some of the recovered aqueous (meth)acrylic acid solution is recycled to the upper portion of the quenching tower so as to condense the (meth)acrylic acid-containing gas mixture; (2) passing the uncondensed part of the (meth)acrylic acid-containing gas mixture from the top of the quenching tower to a distillation tower; and (3) heating the bottom of the distillation tower to separate water-containing impurity components from the uncondensed (meth)acrylic acid-containing gas mixture and to discharge them from the top of the distillation tower. A system used for carrying out the method is also disclosed.
摘要翻译：公开了一种制备（甲基）丙烯酸的方法，包括从（甲基）丙烯酸水溶液中回收（甲基）丙烯酸作为（甲基）丙烯酸水溶液的方法，所述方法至少由一种选自丙烷，丙烯，异丁烯和（甲基）丙烯醛的反应物，其中回收方法包括以下步骤：（1）将含（甲基）丙烯酸的气体混合物进料到淬火塔中并将其冷凝淬火塔，以从骤冷塔的底部回收（甲基）丙烯酸水溶液，其中一些回收的（甲基）丙烯酸水溶液被循环到淬火塔的上部以冷凝（甲基）丙烯酸气体混合物; （2）使来自（甲基）丙烯酸的气体混合物的未冷凝的部分从淬火塔的顶部通到蒸馏塔; 和（3）加热蒸馏塔的底部以将含水的杂质组分与未冷凝（甲基）丙烯酸的气体混合物分离并从蒸馏塔的顶部排出。还公开了用于执行该方法的系统。

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