针对塔河油田二号联轻烃站天然气有机硫含量高导致湿法脱硫处理后外输液化石油气硫含量高且波动较大的问题，通过溶解度分析和吸收实验，对UDS复合胺液吸收法的有机硫脱除效果进行了分析评价和参数优化。改进后脱硫工艺在二号联轻烃站的应用结果表明，UDS溶液具有良好的硫化氢和有机硫脱除效果，相比应用MDEA溶液，外输干气硫化氢平均含量由20.3 mg/m³降至15.1 mg/m³，液化气平均总硫由199 mg/m³降至39.5 mg/m³。该技术为其他类似天然气处理站的有机硫脱除工艺选择提供技术支撑。

The content of organic sulfur in natural gas of No.2 Gathering Centre Light Hydrocarbon Station of Tahe Oilfield is so high that the content of sulfur in LPG after wet desulfurization treatment is higher and fluctuates violently.In order to solve this problem,the removal efficiency of organic sulfur by UDS complex amine solution absorption method is analyzed,evaluated and optimized through solubility analysis and absorption experiments.The application results of the improved desulfurization process in the Station show that UDS solution can bring about a good effect on the removal of hydrogen sulfide and organic sulfur.Compared with the treatment by MDEA solution,the average content of hydrogen sulfide in the produced dry gas decreases from 20.3 mg/m³ to 15.1 mg/m³,and the average total sulfur content in the LPG decreases from 199 mg/m³ to 39.5 mg/m³.This technology provides technical support for the selection of organic sulfur removal process for other similar natural gas treatment stations.