Method for recycling alcohol from malonic ester rectified low-boiling-point substance

The invention relates to the technical field of waste treatment in chemical production, in particular to the technical field of treatment of rectified low-boiling-point substances in malonic ester production, and particularly provides a method for recycling alcohol from a malonic ester rectified low-boiling-point substance. The method is characterized in that the low-boiling-point substance produced in the production process of malonic ester is treated by alkaline solution to decompose acetate, the treated low-boiling-point substance is rectified, the alcohol with stable and qualified quality can be obtained, workshop wastewater is treated while the alcohol is recycled, raw material consumption is reduced, production cost is reduced, the operation process is simple and convenient, devices are simple, equipment investment cost is low, and the method is easy to implement and has good economic and social benefits. 本发明涉及化工生产废物处理技术领域，尤其是涉及丙二酸酯生产中精馏低沸物的处理技术领域，具体提供了种从丙二酸酯精馏低沸物中回收醇的方法，其特征是将丙二酸酯生产过程中产生的低沸物先经过碱性溶液处理分解乙