公开(公告)号：US20160176797A1

公开(公告)日：2016-06-23

申请号：US14972255

申请日：2015-12-17

Applicant: BASF SE

Inventor： Till Christian BRUEGGEMANN ,  Nicolai Tonio WOERZ ,  Astrid RUPPEL

IPC: C07C51/353 ,  B01J8/02

CPC classification number: C07C51/353 ,  B01J8/0278 ,  B01J23/22 ,  B01J27/186 ,  B01J27/198 ,  B01J2208/00893 ,  B01J2208/02 ,  C07C51/00 ,  C07C57/04

Abstract: The present invention relates to a process for preparing acrylic acid from formaldehyde and acetic acid, comprising reacting formaldehyde and acetic acid via an aldol condensation in a reaction unit comprising n reaction zones arranged in series, each comprising an aldol condensation catalyst, where n is at least 2, and wherein at least one stream leaving a reaction zone, before being fed into the reaction zone immediately downstream, is mixed with a stream comprising formaldehyde and optionally comprising acetic acid. The present invention further relates to an apparatus for preparing acrylic acid from formaldehyde and acetic acid and to the use of this apparatus.

Abstract translation: 本发明涉及一种由甲醛和乙酸制备丙烯酸的方法，包括通过醛醇缩合反应甲醛和乙酸，反应单元包括串联排列的n个反应区，每个反应区包含醛醇缩合催化剂，其中n为 至少2个，并且其中在被直接下游进料到反应区之前离开反应区的至少一个物流与包含甲醛的流和任选地包含乙酸混合。 本发明还涉及一种用于从甲醛和乙酸制备丙烯酸的设备以及使用该装置。