N-甲基二乙醇胺的生產工藝
目前,我國大型石油化工廠、化肥廠、天然氣凈 化廠須進行脫硫及制硫。N-胺簡稱 ,是一種新興的脫硫、脫碳溶劑,20世紀70年 代國外已開始在工業上應用,80年代國內相繼完成 了脫硫和脫碳工業化試驗,90年代后期在工業上應 用,到本世紀初國內已獲得廣泛推廣。MDEA由一 甲胺和環氧乙烷反應而得。
2.1 hechengfanying
yijiaanhehuanyangyiwanfenbiejilianghou,jinruhunheqihun he,zai6.3 mpahe135 ℃tiaojianxiafanyingzhihou,jinxingjuhe fanying。fanyingchuqi,fanyingxuyaodereliangyouzhengqizhijiejinru fanyingqidibu。fanyingguochengzhong,wuliaofanyingchanshengdedaliangre lianghuishifanyingwendujijushangsheng,weileweichifanyingwendubu bian,liyongfanyingqidechukouchuwenduhefanyingqineideqixiangwen du,duifanyingqidingbulengqueqidexunhuanshuiliangjinxingkongzhi。
2.2 tuoan
fanyingwujinrutuoanta,dabufenweifanyingdeyijiaancong tadingbuchulai,jingtadinglengningqilengquehouxunhuanshiyong。tuoan tadibudeanyezhiyicishanzhengta。
2.3 shanzheng
congtuoantachulaidefanyingwuzaiyicishanzhengtanei,shanzheng chubufenyijiaan,zaijingtadinglengningqilengquehoujinruercixi shouta,congyicishanzhengtadibuchulaideyetijinruercishanzhengta,jiangweifanyingdeyijiaanshanzhengchulai。
2.4 xishou
ercishanzhengtatadingchulaideqiti,jinruyicixishouta xiabu,yongchuliutadeyibufenqingzufenzuoxishouyejinxingxi shou。yicixishoutafuchulaideyetijinruercixishoutazuo weixishouye。yicishanzhengtatadingchulaideqixiangjinglengquehou, jinruercixishoutaxiabu,yongyicixishoutadichulaidexishou yejinxingxishou。ercixishoutatadingchulaideqiti,jinxingwei qichulipaifang。
2.5 chuliu
congercishanzhengtadibuchulaifanyingchanwu,jinruchuliuta zhongbu,tadingzhengchuqingzufenanqiti,zaijingtadinglengningqileng quehou,fenlianglu,yilusongdaotadingbuzuoweichuliutadetading huiliuye,lingyilusongzhiyicixishoutazuoxishouyeshiyong。chu liusuoxuyaodereliangyouchuliutadizaifeiqiyongzhengqijiarelai gonggei。chuliutadezhenkongxitongyouchuliutadezhenkongbengjizu chouzhenkong。
2.6 jingliu
tuoquqingzufendefanyingchanwucongchuliutatadichulai,jing jingliutajinliaobengchouchusongzhijingliutazhongbu,tongguojingliuzuoyong,congtadingchulaideqitijingjingliutadinglengningqiyongxunhuanshui lengquehou,fenlianglu,yilusongzhijingliutadingbuzuoweijingliuta dehuiliuye,lingyiluzuoweizhuangzhidezhuyaochanpin。jingliusuoxu dereliangyongjingliutadizaifeiqiyongzhengqijiaregonggei。congta dichulaidezhongzufenjingjingliutadicao,tongguocanyeshusongbengsong zhicanyeshoucao。