Azeotropic distillation separating and treatment method for methanol and methyl acrylate mixture

The invention relates to an azeotropic distillation separating method for a methanol and methyl acrylate mixture and a re-utilizing method for a methanol and methyl acrylate azeotrope obtained after separation. A reasonable and effective entrainer is used, single-tower operation is adopted, the operation is flexible, equipment investment fees are low, the product recovery rate is high, and the entrainer is safe and nontoxic. A high-purity methyl acrylate product can be separated, and the obtained methanol and methyl acrylate azeotrope can also be used as a raw material in the synthesis process. Other impurities cannot be introduced into the product in the separating process. The method has the characteristics of low toxicity, low pollution, low cost, high yield, high product purity and the like and has a wide application prospect.