粗煤气CO的恒等温变换

Isothermal Shift Reaction of Crude Gas with High CO-content from Coal Gasification

从原理上分析了高CO粗煤气变换反应存在的问题,介绍了两种传统的变换流程并分析了其缺点,提出了水管式等温变换的概念,例举了粗煤气CO体积分数分别为76%和60%,变换后CO体积分数分别为1.5%和0.4%(制取合成氨)的流程,并总结了等温变换的主要优点。

The crude gas from the coal gasification process with pure-oxygen and steam as the gasification agents has a very high CO content which is up to the range of 50%-80%. The paper discussed the challenging problems in con- verting the raw gas into H〉 The water-tube isothermal shift reaction model was presented to solve the key problems of this type of reactions. Two shift reaction examples in the ammonia synthesis process were discussed： 1） converting the crude gas with 76% CO content to a gas mixture with 1.5% CO; 2） converting the crude gas with 60% CO content to a gas mix- ture with 0.4% CO. Ten major advantages of this process technology were summarized.