[目的]汽车涂装生产过程中需要对喷涂装置、管路及输调漆系统进行定期清洗，会产生大量的废清洗溶剂。本研究旨在针对某车间的实际情况，分析最优分离和回收方案，降低溶剂的采购成本，减少危废溶剂排放。[方法]针对溶剂型废清洗溶剂当前常见的回收再用技术路线(包括常压蒸馏、减压蒸馏和精馏)及膜分离方案进行了详细介绍和优缺点的对比。对两种经膜分离后回收的溶剂进行挥发速率、溶剂成分、溶解力、电阻等方面的测试，并与原溶剂进行对比。[结果]膜分离法对溶剂型废清洗溶剂的回收率可达到70%以上，不同品牌溶剂产品在回收后与原来组分的差异存在差别。[结论]膜分离法适用于溶剂型废清洗溶剂的回收，回收溶剂与原溶剂的溶解力差异因不同品牌的组分差异而有所不同，回用时要注意调配。

[Objective] During the automotive painting process, regular cleaning of spraying equipment, pipelines, and paint circulation and supply systems generates a large amount of spent cleaning solvent. This study aims to analyze the optimal separation and recovery scheme based on the actual conditions of a specific workshop to reduce the procurement costs of fresh solvent and minimize the discharge of hazardous spent solvent. [Method] Common reclamation and reuse technologies(i.e. atmospheric distillation, vacuum distillation, and rectification) for spent solvent-based cleaning agents and the applications of membrane separation methods were introduced in details, with a focus on comparing their advantages and disadvantages. Two types of solvents recovered via membrane separation were tested for evaporation rate, chemical composition, solvency, and electrical resistance, and the results were compared with those of the fresh solvents. [Result] The membrane separation method achieved a recovery rate of over 70% for spent solvent-based cleaning agents. The composition of the reclaimed solvent differed from the fresh one, with variations depending on the solvent brand. [Conclusion] The membrane separation method is suitable for recovering spent solvent-based cleaning agents. As the solvency of the reclaimed solvent varies from the original due to compositional differences, blending with fresh solvent may be required during reuse to ensure performance compatibility.