The pressurized pulverized coal gasification technology was used in quite a few new ammonia plants. It is of high water gas ratio，high CO content in the raw gas. Isothermal shift and adiabatic shift which match with the gasification were introduced in the paper，making comparison between the two processes respectively from the process flow，plot area，key equipment，utility consumption，catalyst dosage，economic investment，etc. The results showed that the isothermal shift had some advantages in the application of raw gas with high water gas ratio，but it had such drawbacks as few reference application plants and short operating period.%不少新建合成氨装置采用粉煤加压气化工艺,其粗煤气中水气比高、CO含量高,介绍了与其配套的等温变换和绝热变换2种变换工艺,分别从工艺流程、占地面积、关键设备、公用工程消耗、催化剂用量和经济投资等方面对二者进行了对比.结果表明,等温变换在高水气比粗煤气变换中应用具有一定的优势,但也存在应用业绩不多、运行年限较短的问题.
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