PROCESS FOR PRODUCTION OF (METH)ACRYLIC COMPOUNDS AND METHODS OF DISTILLATION

摘要

A process for the production of a (meth)acrylic compound which involves shutdown and startup of a distilling column, wherein in the shutdown, the heating of a reboiler attached to the distilling column is stopped and then the reboiler is rapidly cooled and/or wherein in the startup, the inner wall surface of the distilling column is heated to a temperature higher than the condensation temperature of the (meth)acrylic compound and the distilling column is started up with the inner wall surface heated. Since the polymerization in a distilling column can be inhibited according to this process, the distilling column can be shut down early and safely, which enables the long-term stable distillation of acrylic monomers.