水煤气变换反应广泛应用于合成氨、制氢、合成气制醇和制烃等催化过程以及调控城市煤气中CO含量。由于CO变换是强放热反应，能调节原料气中的氢碳比，是全厂节能降耗的关键工段，因此有必要对变换工段进行模拟与分析。 本文首先论述了三类变换催化剂（Fe-Cr系高温变换催化剂、Cu-Zn系低温变换催化剂、Co-Mo系耐硫宽温变换催化剂）的研究现状和特点；其次总结出了四种变换工艺（中变工艺、中串低工艺、中低低工艺及全低变工艺）的优缺点，最后结合水煤气高汽气比，高CO含量，高硫含量的特点，由此选择了由山东齐鲁石化分公司研究院开发成功的QCS-01型宽温耐硫变换催化剂，采用高汽气比、部分变换、全低变的工艺流程，对变换工段进行了全流程模拟。根据模拟结果，对变换比、变换炉温度、变换炉压力等参数进行了灵敏度分析，得到了比较合理的操作范围，并通过优化分析得出了最佳操作参数的建议。 采用了RPlug平推流模型对关键设备变换炉进行模拟。变换炉采用两段式绝热反应器，中间用冷物料进行激冷冷凝，以降低变换炉热点温度。模拟结果与实际数据比较吻合。最后结合生产实际对变换炉进行了初步的机械设备设计。

Water gas shift reaction is widely used in the catalytic of ammonia, hydrogen, syngas alcohol and hydrocarbon system in the process as well as the regulation of city gas CO content.Because the CO shift reaction is strongly exothermic,and can adjust the feed gas of hydrogen and carbon ratio, so transform section is a key energy-saving steps of the whole plant.Therefore, it is necessary to simulate and analysis the transform section. This paper firstly discusses the research status and characteristics of three types of the shift catalyst including Fe-Cr high temperature water gas shift catalyst, Cu-Zn low temperature water gas shift catalyst, and Co-Mo sulfur-tolerant wide temperature water gas shift catalyst; secondly, it sums up compared excellences and shortcomings of four kinds of transformation process including medium temperature shift process, medium-low temperature shift process, middle-low-low temperature shift process and totally low temperature shift process; Finally as water gas has some characteristics, such as high gas steam-gas ratio, high CO content and high sulfur content as feed gas, so the QCS-01 type wide temperature resistant sulfur conversion catalyst which was successfully developed by research institute of Shandong Qilu petrochemical company is selected. The process which has some characteristics, such as higher steam/gas ratio, partial shift and totally low temperature shift is used to simulate the whole process for shift section.Based on the simulation results, the sensitivity analysis is made for factors of effecting technical indexs of the shift section, the factors includes transform ratio and the temperature and pressure of transformation furnace. Therefore, the proper parameters range of the technical indexs are obtained and the optimal parameter combination is achieved by using optimization technique. The key equipment of the transformation furnace is simulated by using RPlug plug flow model. In order to reduce the hot spot temperature, the transformation furnace adopts two stage adiabatic reactor and the multi-zone of the transformation furnace is chilled by cold materials. The simulation results are closer to the industrial actual data. Finally, combining with actual production, the machinery and equipment of the transformation furnace preliminarily designed.