王建辉，李 栋
(河南煤业化工集团中原大化公司，河南濮阳457004)
[摘 要]分析了Shell煤气制甲醇装置高水气比耐硫变换工艺在生产中遇到的频繁超温、蒸汽消耗高、工艺冷凝液量大等问题及所采取的措施，提出用低水气比取代高水气比耐硫变换工艺的设计思
路，介绍了具体改造内容。实施后有效地解决了上述采用高水气比变换工艺存在的问题。
[关键词]Shell煤气；变换；耐硫；催化剂；高水气比；低水气比；取代
[中图分类号]TQ 223．12+l [文献标识码]A [文章编号]1004—9932(201 1)01—0001—05
Low Water to Gas Ratio CO Shift，Effective Solution for Excessive
Shift，High Steam Consumption，Quantities of Process Condensate
Frequently Occurred in High Water to Gas Ratio Process
WANG Jianhui．LI Dong
(Zhongyuan Dahua Co．Ltd of Henan Coal&Chemical Industry Group，Puyang 457004，China)
Abstract：The paper analyzes the problems，excessive temperature of catalysis bed，high steam consumption, quantities of process condensate etc．，frequently occurred in CO shift system with high water to gas ratio process in Shell gas based methanol plant．Some measures to solve it were adopted，but the effect was limited. So the low water／gas CO shift process was presented．The paper introduces its design concept and revamp detail．The problems are solved effectively after revamping and the process converting is completed．
Key Words：Shell gas；shift；sulfur—tolerant；catalyst；high water to gas ratio；low water to gas ratio；converting
Shell粉煤加压气化工艺由于相对具有煤质要求低、原煤和氧气消耗低、制出的合成原料气中有效组分含量高[φ(CO+H：)>89％]、环境污染小等特点，近年来成为国内许多煤化工装置首选的气化工艺。但由于Shell炉制得的合成原料气中CO含量高达65％以上，不仅加重了耐硫变换系统的负荷，而且当CO含量高、水气比较低、变换炉床层热点温度较高(>