煤制乙二醇合成气净化工艺路线分析选择

SYNGAS FOR COAL-TO-GLYCOL PURIFICAION PROCESS ANALYSIS AND OPTION

分析讨论煤制乙二醇合成气净化系统中PSA尾气和冷箱CO闪蒸气在系统中回收利用的三种工艺流程设置,结果显示:在方案二流程中,PSA尾气经尾气压缩机进入酸性气体脱除非变换气线,CO闪蒸气加压进PSA单元入口,以此设置公用工程的消耗和操作费用较低,具有一定的优势。

Three kinds of process of utilizing recycled gas from PSA off-gas and CO flash gas from cold box in coal-to-glycol purification system were discussed and analyzed.The process that PSA off-gas was compressed to inlet of unshift gas line in acid gas removal plant and CO flash gas was compressed to PSA inlet was advantageous because of lower utility and operation cost.