对粗苯加氢油萃取精馏操作过程的关键影响因素环丁砜溶剂质量进行了分析研究，阐述了溶剂纯度对萃取精馏过程分离效率的影响，确定了一定的溶剂纯度条件下最佳粗苯加氢油萃取精馏操作控制参数，实施了现有塔器高效塔内件技术改造，在稳定生产的基础上，大大提高了系统的加工能力，对萃取精馏装置的技术升级和萃取精馏过程的操作调整具有指导意义。

Based on the characteristic of the crude benzol hydrogenation oil extractive distillation operation process,this paper expounds the effect of sulfolane solvent quality,the key influence factors,on the separation efficiency of the process.The optimal operating parameters are determined for the crude benzol hydrogenation oil extractive distillation operation process under the certain solvent purity.A technical renovation is executed to the high efficiency tray within the existing tower,which improves greatly the processing ability of the system.It has guiding significance to upgrade technology for the extractive distillation unit and adjust the operating parameters for the extractive distillation process.