Abstract: Application of Rectisol wash process in the Yitai 160000 t/a coal to liquids demonstration project is introduced. The problems of installation and operation, and the improvement measures are presented. Operation results show that good improvement is achieved, methanol consumption is controlled at 1.13kg/m³, water content is reduced to less than 0.5%, shift gas instead of low pressure steam saves steam consumption by 60680 t/a. The characteristics of the technological process is analyzed. Application of the Rectisol wash process in indirect coal liquefaction demonstration plant is successful. It is an advanced process with high degree of purification and stable quality of purified gas.

Key words: coal to liquids, Rectisol, coal gas purification, sour gas removal

摘要： 介绍了伊泰16万吨/年煤制油示范项目中低温甲醇洗工艺的应用情况,阐述了该工艺在安装和运行中存在的问题以及改进措施。运行结果显示,改造效果较好,甲醇消耗控制在1.13kg/m³,系统中的水含量降低至0.5%以下,用变换气代替低压蒸汽每年节约蒸汽用量60680 t。分析了该工艺流程的特点。实践证明该工艺先进成熟,净化度高且净化气质量稳定,能够满足生产需要,在煤炭间接液化示范装置中的应用是成功的。

关键词: 煤制油, 低温甲醇洗, 合成气净化, 酸性气脱除