超级克劳斯硫磺回收系统动态模拟仿真

Dynamic Simulation of the Super Claus Sulfur Recovery System

摘要: 煤化工、炼油工业和天然气工业提供了我国的主要硫磺产量。特别我国是以煤炭为主要能源的国家，高含硫煤炭在处理过程中，需要对工艺脱硫装置产生的高含硫气体等含硫介质进行硫磺回收，一般以单质硫磺为最终产品。本文从硫磺回收装置的工艺原理和设备原理出发，采用通用化工流程动态建模软件：奥秘仿真(OmniSim)建立了一套煤化工生产中含硫酸性气体处理的超级克劳斯硫磺回收装置的动态数学模型。根据实际工况数据，对硫回收反应装置的反应动力学参数进行了校正。研究结果表明，采用吉布斯自由能最小化的方式对主燃烧器建模，模拟计算结果与实际工况数据的浓度平均相对误差在5%左右，可以满足工业级应用。本文提供了一种利用化工流程动态建模软件建立硫磺回收系统动态模型的方案。基于动态模型，可以进行装置的生产操作动态响应、自控方案检验等方面的模型仿真。

Abstract: Coal chemical, oil refining industry and natural gas industry provided the main sulfur production in China. China is a country with coal as the main energy source, high sulfur coal is used for many factory productions and needs to recover sulfur from sulfur containing medium such as high sulfur gas which is produced from desulfurization unit, generally in the form of simple substance sulfur as the final product. This paper from the sulfur recovery unit process principle and equipment principle starting, the general chemical process dynamic modeling software, OmniSim, is adopted to establish a set of dynamic mathematics of the super Claus sulfur recovery unit, which is treated with sulfuric acid gas in coal chemical industry. According to the actual operating condition data, the reaction kinetic parameters of the sulfur recovery reaction device were corrected. The results show that the model of the main burner is successfully modeled by the Gibbs free energy minimization, and the average relative error of the simulation results and the actual operating conditions is about 5%, which can meet the industrial application. According to this, this paper provides a scheme of dynamic model of sulfur recovery system using chemical process dynamic modeling software. Based on the dynamic model, the dynamic response of the production operation and the test of the automatic control scheme can be simulated.