Continuous ethanol recovery and salicylic acid removal technology for carbaspirin calcium mother liquor

The invention provides a continuous ethanol recovery and salicylic acid removal technology for carbaspirin calcium mother liquor. According to the technology, continuous ethanol recovery and salicylicacid removal of the carbaspirin calcium mother liquor are achieved, a feasible process route suitable for the continuous ethanol recovery and salicylic acid removal technology of the carbaspirin calcium mother liquor is developed, and it is guaranteed that the concentration of recovered ethanol is larger than or equal to 95% through the technology; the content of ethanol in liquid after ethanol removal is lower than 100 ppm, the content of salicylic acid in the liquid after ethanol removal is lower than 3 g/L, and the purity of the recovered solid salicylic acid reaches 95% or above. The technology has the advantages of simple process, simple device, high product purity and the like. 本发明提供了一种卡巴匹林钙母液连续化乙醇回收及水杨酸脱除技术。该技术实现了卡巴匹林钙母液连续化乙醇回收及水杨酸脱除，开发了适用于卡巴匹林钙母液连续化乙醇回收及水杨酸脱除技术的可行性工艺路线，该技术保证回收的乙醇浓度≥95％；脱除乙醇后液体中乙醇含量低于100pp