纯氧克劳斯工艺的模拟与优化  

Simulation and Optimization of Pure Oxygen Claus Process

作　　者：高德志 喻昕蕾 陶迅 丁路[1] 代正华[1] 王辅臣[1] GAO Dezhi;YU Xinlei;TAO Xun;DING Lu;DAI Zhenghua;WANG Fuchen(Shanghai Engineering Research Center of Coal Gasification,East China University of Science and Technology,Shanghai 200237,China)

机构地区：[1]华东理工大学上海市煤气化工程技术研究中心,上海200237

出　　处：《华东理工大学学报（自然科学版）》2022年第1期26-33,共8页Journal of East China University of Science and Technology

基　　金：国家自然科学基金(21978092)。

摘　　要：基于Aspen Plus软件建立克劳斯工艺全流程模型,使用工厂数据进行验证,探究了进口酸气组成、氧气浓度及进气流量、氧气预热温度、炉膛压力及第二催化段反应器温度等工艺参数对克劳斯工艺的影响,并以Aspen Plus为优化工具,硫收率为目标函数计算了最佳操作参数。优化结果表明:总硫收率从优化前的98.31%提高到优化后的99.08%,尾气中主要污染物SO;的排放量由优化前的0.350 kmol/h减少至优化后的0.278 kmol/h,降低了20.6%,并节省了酸性气体和空气预热所需的热量9133.38 J/mol。The Claus process is effective for acid-gas processing and sulfur recovery.For industrial applications,combustion-supporting gas is needed to ensure flame stability when processing low-concentration acid gases,which can cause problems in terms of the increase in harmful substances such as polycyclic aromatic hydrocarbons and organic sulfur.The use of pure oxygen for combustion can not only increase the temperature in the furnace and improve the removal rate of hydrocarbon impurities,but also overcome the problems caused by the presence of combustion-supporting gas.In this paper,a full Claus-process model was constructed using the Aspen Plus software,and the theoretical result was validated by experimental data.The influences of the inlet acid gas composition,oxygen concentration,oxygen preheating temperature,furnace pressure,oxygen gas intake and the temperature of the second catalytic stage reactor on the Clause process were systematically examined.Optimized Aspen Plus was used to calculate the optimal operating parameters.The results showed that the sulfur recovery efficiency was enhanced from98.31%to 99.08%,and the emission of SO;,which was the main pollutant in the tail gas,was reduced from0.350 kmol/h to 0.278 kmol/h;the reduction rate reached 20.6%.In addition,a heat of 9133.38 J/mol(acid gas)was less consumed for the preheating of the acid gas and air.

关 键 词：克劳斯工艺 低浓度酸性气体 纯氧 流程模拟 优化 

分 类 号：TQ125.11[化学工程—无机化工]