Invention Application
US20130281737A1 METHOD FOR REDUCING EQUIPMENT FOULING IN (METH)ACRYLIC ACID PRODUCTION PROCESS
审中-公开
降低（甲基）丙烯酸生产过程中的设备的方法
- Patent Title: METHOD FOR REDUCING EQUIPMENT FOULING IN (METH)ACRYLIC ACID PRODUCTION PROCESS
- Patent Title (中): 降低（甲基）丙烯酸生产过程中的设备的方法
-
Application No.: US13976278Application Date: 2011-11-30
-
Publication No.: US20130281737A1Publication Date: 2013-10-24
- Inventor: Marc Charendorff , Jamie Jerrick Juliette , Joy Mendoza , Rajesh Shah
- Applicant: Marc Charendorff , Jamie Jerrick Juliette , Joy Mendoza , Rajesh Shah
- Applicant Address: US PA Philadelphia
- Assignee: ROHM AND HAAS COMPANY
- Current Assignee: ROHM AND HAAS COMPANY
- Current Assignee Address: US PA Philadelphia
- International Application: PCT/US2011/062605 WO 20111130
- Main IPC: C07C51/44
- IPC: C07C51/44
Abstract:
The present invention provides a method for reducing fouling of equipment during separation and purification steps of (meth)acrylic acid production by early removal of aldehyde impurities by adding a hydrazide compound well upstream of the separation and purification steps. In particular, carbodhydrazide may be added as an aldehyde scavenging agent to aqueous (meth)acrylic acid prior to dehydration and purification steps.
Information query
