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公开(公告)号:US5817865A
公开(公告)日:1998-10-06
申请号:US779235
申请日:1997-01-03
申请人: Otto Machhammer , Toni Dockner , Gerd-Jurgen Engert , Theo Proll
发明人: Otto Machhammer , Toni Dockner , Gerd-Jurgen Engert , Theo Proll
IPC分类号: B01D9/02 , B01D3/00 , C07B61/00 , C07C51/235 , C07C51/25 , C07C51/43 , C07C51/48 , C07C57/04 , C07C57/05 , C07C57/055 , C07C57/07 , C07C69/54 , C07C67/00 , C07C51/16
CPC分类号: C07C51/43 , Y02P20/582
摘要: A process for preparing acrylic acid and/or esters comprises the steps of: (a) catalytic gas phase oxidation of propene and/or acrolein to acrylic acid to obtain a gaseous reaction product comprising acrylic acid, (b) solvent absorption of the reaction product, (c) distillation of the solvent loaded with acrylic acid to obtain a crude acrylic acid and the solvent, (d) purification of the crude acrylic acid by crystallization and (e) optionally esterification of the crystalline acrylic acid.
摘要翻译: 制备丙烯酸和/或酯的方法包括以下步骤:(a)将丙烯和/或丙烯醛催化气相氧化成丙烯酸以获得包含丙烯酸的气态反应产物,(b)反应产物的溶剂吸收 ,(c)负载丙烯酸的溶剂的蒸馏以获得粗丙烯酸和溶剂,(d)通过结晶纯化粗丙烯酸,和(e)任意酯化结晶丙烯酸。