甲醇精馏系统不凝气回收甲醇改造  

Transformation of noncondensable gas recovery methanol in methanol distillation system

作　　者：曹文欣 张花 侯小鹏 李佐鹏 CAO Wenxin;ZHANG Hua;HOU Xiaopeng;LI Zuopeng(Shaanxi Yanchang Zhongmei Yulin Energy and Chemical Co.,Ltd.,Yulin 718500,Shaanxi Province)

机构地区：[1]陕西延长中煤榆林能源化工股份有限公司,陕西榆林718500

出　　处：《氮肥技术》2024年第4期11-15,共5页Nitrogenous Fertilizer Technology

摘　　要：陕西延长中煤榆林能源化工股份有限公司一期项目180万t/a甲醇精馏系统,稳定塔顶不凝气中二氧化碳含量较高,无法送入下游转化炉进行燃烧,排放至火炬,造成火炬含甲醇凝液量增加,甲醇浪费.通过增加一台脱盐水洗涤塔、尾气冷却器、集液包,将不凝气中的甲醇洗涤分离回收,送回稳定塔进行回收利用,取得了良好的效益.The 1.8 million t/a methanol distillation system of the first phase project of Shaanxi Yanchang zhongmei Yulin Energy and Chemical Co.,Ltd.,the noncondensable gas at the top of the stabilizer has a high carbon dioxide content,which cannot be sent to the downstream converter for combustion and discharged to the flare,resulting in increased methanol condensate content in the flare and methanol waste.By adding a desalination water washing tower,tail gas cooler,and liquid collection bag,the methanol in the noncondensable gas was washed,separated,and recovered,and sent back to the stabilizer for recycling,achieving good benefits.

关 键 词：精馏系统 不凝气 甲醇回收 改造 效益 

分 类 号：TQ028.31[化学工程] TQ223.121