低温甲醇洗系统循环甲醇中硫化物的影响及控制措施  

EFFECT OF SULFIDE IN CIRCULATING METHANOL IN RECTISOL SYSTEM AND CONTROL MEASURES

作　　者：昝智峰 刘致强 董睿敏 

机构地区：[1]陕西渭河煤化工集团有限责任公司,陕西渭南714000

出　　处：《大氮肥》2017年第2期95-98,共4页Large Scale Nitrogenous Fertilizer Industry

摘　　要：以渭化集团三期400 kt/a甲醇项目为例,重点分析低温甲醇洗系统循环甲醇中硫化物的影响因素,分别从甲醇再生塔的0.34 MPa蒸汽用量、克劳斯气的H_2S浓度、循环甲醇量、进硫化氢馏分冷交换器管程的克劳斯气温度、硫化氢浓缩塔的气提氮用量、变换气的NH_3含量和循环甲醇的H_2O含量等方面提出控制措施,最终可将循环甲醇中硫化物含量稳定在60 mg/L以下,出甲醇洗涤塔塔顶净化气的总硫含量在0.05×10^(-6)以下。Taking a 400 kt/a methanol project as an example,this paper analyzed the effect of sulfide in circulating methanol in rectisol system.Sulfide content was controlled under situations of steam consumption（0.34 MPa） from methanol regenerator,H2S content in Claus gas,the amount of circulating methanol,temperature of Claus gas into tube side of coal exchanger for sulfide fraction,NH3 content in shift gas,and H2O content in circulating methanol.Finally the content of sulfide in circulating methanol was controlled below 60mg/L,total sulfide in purified gas from the top of methanol stripper below 0.05×10^-6.

关 键 词：低温甲醇洗 甲醇再生 循环甲醇 硫化物 NH3 

分 类 号：TQ223.121[化学工程—有机化工]