| 摘要 |
The present invention discloses a process for continuous preparation of (meth)acrylic acid alkyl esters by reacting (meth)acrylic acid with monohydric alkanols having from 1 to 8 carbon atoms in the presence of an acid esterification catalyst in a reaction zone, a product mixture is removed which comprises the resulting alkyl (meth)acrylate, the catalyst, and by-products formed during the course of esterification having higher boiling temperatures than that of alkyl (meth)acrylate, and from which alkyl (meth)acrylate is separated by distillation in a separation zone. The product mixture removed from the reaction zone is fed to a rectification unit (I), and separated therein by rectification in at least one product (I) comprising (meth)acrylic acid alkyl ester, and a product (II) comprising the catalyst; product (I) is fed to an additional rectification unit (II) and (meth)acrylic acid alkyl ester is separated therein by rectification.
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