发明名称 |
PROCESS FOR PREPARING ACRYLIC ACID FROM METHANOL AND ACETIC ACID |
摘要 |
A process for preparing acrylic acid from methanol and acetic acid, comprising (i) contacting a gaseous stream S0 comprising methanol, oxygen and inert gas with an oxidation catalyst to obtain a gaseous stream S1 comprising formaldehyde and inert gas; (ii) removing at least a portion of the inert gas present in S1 from at least a portion of the formaldehyde present in S1 by absorbing this formaldehyde in an absorbent to obtain a gaseous stream S2 comprising the portion of the inert gas removed, and to obtain a stream S3 comprising absorbent and absorbate comprising formaldehyde; (iii) optionally removing a portion or the entirety of the absorbent present in stream S3, such that a stream S3a remains from stream S3, and producing a stream S4 from at least stream S3 or stream S3a and a stream S5 comprising acetic acid; and (iv) contacting stream S4 in gaseous form with an aldol condensation catalyst to obtain a gaseous stream S6 comprising acrylic acid. |
申请公布号 |
US2016031789(A1) |
申请公布日期 |
2016.02.04 |
申请号 |
US201514794955 |
申请日期 |
2015.07.09 |
申请人 |
BASF SE |
发明人 |
SCHULZ Lukas;Woerz Nicolai Tonio;Blaschke Tim;Hartmann Marco;Huetten Frank |
分类号 |
C07C51/347;C07C45/78;C07C45/32 |
主分类号 |
C07C51/347 |
代理机构 |
|
代理人 |
|
主权项 |
1. A process for preparing acrylic acid from methanol and acetic acid, the process comprising
(i) contacting a gaseous stream S0 comprising methanol, oxygen and inert gas with an oxidation catalyst to obtain a gaseous stream S1 comprising formaldehyde and inert gas; (ii) removing at least a portion of the inert gas present in S1 from at least a portion of the formaldehyde present in S1 by absorbing this formaldehyde in an absorbent to obtain a gaseous stream S2 comprising the portion of the inert gas removed, and to obtain a stream S3 comprising absorbent and absorbate comprising formaldehyde; (iii) optionally removing a portion or an entirety of the absorbent present in the stream S3, such that a stream S3a remains from the stream S3, and producing a stream S4 from at least the stream S3 or the stream S3a and a stream S5 comprising acetic acid; and (iv) contacting the stream S4 in gaseous form with an aldol condensation catalyst to obtain a gaseous stream S6 comprising acrylic acid. |
地址 |
Ludwigshafen DE |