A flash steam recovery methanol system belongs to the field of methanol recovery in chemical industry, including preheating furnace, flash tank, desalination tank, underground tank of distillation system and flash steam recovery tower. The flash tank is connected to the exhaust air inlet of preheating furnace through valve III, the front end of valve III is connected to the lower end of the flash steam recovery tower through valve I, and the upper end of the flash steam recovery tower is connected to the lower end of the intake air through the valve. II is connected to the back end of valve III, the desalination tank is connected to the inlet of the upper end of the steam recovery tower, and the outlet of the lower end of the steam recovery tower is connected to the underground trough of the distillation system. The flash vapor in the flash tank enters the bottom of the flash vapor recovery tower, contacts with the desalted water entering the upper part of the flash vapor recovery tower, washes the methanol gas in the flash vapor, recovers the dilute alcohol liquid after washing to the underground tank of the methanol distillation system, and then pumps into the crude armor tank by the liquid pump to complete the methanol recovery, which can recover the methanol gas contained in the flash vapor in large quantities, reduce energy consumption and improve the income.
【技术实现步骤摘要】
一种闪蒸汽回收甲醇系统
本技术属于化工甲醇回收领域,具体地说是一种闪蒸汽回收甲醇系统。
技术介绍
在焦炉气制甲醇装备上,粗甲醇经分离后进入闪蒸槽闪蒸出溶解在粗甲中气体,闪蒸汽中通常含有氢气、一氧化碳、二氧化碳、甲烷等气体,并含少量甲醇气体,现今的技术设计中,把闪蒸汽混入预热炉燃料气中作为燃料使用,其包含的甲醇气也一并燃烧,这样就浪费了甲醇,降低了生产效率,降低效益。
技术实现思路
为解决闪蒸汽中的甲醇混入预热炉燃料气中作为燃料使用,浪费甲醇、降低了生产效率,降低效益的不足,本技术提供一种闪蒸汽回收甲醇系统。本技术是通过下述技术方案来实现的。一种闪蒸汽回收甲醇系统,包括预热炉和闪蒸槽,其特征是,还包括脱盐水池、精馏系统地下槽和闪蒸汽回收塔,闪蒸槽通过阀门Ⅲ连接到预热炉的驰放气进气口,阀门Ⅲ前端通过阀门Ⅰ连接到闪蒸汽回收塔的下端进气端,闪蒸汽回收塔上端出气口通过阀门Ⅱ连接到阀门Ⅲ的后端,脱盐水池连接到蒸汽回收塔上端的进液口,蒸汽回收塔下端的出液口连接到精馏系统地下槽。优选的,所述的阀门Ⅰ、阀门Ⅱ和阀门Ⅲ均为不锈钢球阀。本技术的有益效果是:1、可以大量回收闪蒸汽中甲醇,每天可回收稀醇水约1.6吨,醇含量能达到40%—50%,年回收甲醇约210吨,减少能耗,提高收益;2、系统结构简单,操作便捷,节省人工;3、停车检修期容易,通过阀门把系统隔离检修。附图说明图1为本技术的结构示意图。附图中:1、闪蒸槽,2、预热炉,3、脱盐水池,4、精馏系统地下槽,5、闪蒸汽回收塔,6、阀门Ⅰ,7、阀门Ⅱ,8、阀门Ⅲ。具体实施方式下面结合附图对本技术的实施方式做进一步说明。如附图所示,一种闪 ...
【技术保护点】
1.一种闪蒸汽回收甲醇系统,包括预热炉(2)和闪蒸槽(1),其特征是,还包括脱盐水池(3)、精馏系统地下槽(4)和闪蒸汽回收塔(5),闪蒸槽(1)通过阀门Ⅲ(8)连接到预热炉(2)的驰放气进气口,阀门Ⅲ(8)前端通过阀门Ⅰ(6)连接到闪蒸汽回收塔(5)的下端进气端,闪蒸汽回收塔(5)上端出气口通过阀门Ⅱ(7)连接到阀门Ⅲ(8)的后端,脱盐水池(3)连接到蒸汽回收塔(5)上端的进液口,蒸汽回收塔(5)下端的出液口连接到精馏系统地下槽(4)。
【技术特征摘要】
1.一种闪蒸汽回收甲醇系统,包括预热炉(2)和闪蒸槽(1),其特征是,还包括脱盐水池(3)、精馏系统地下槽(4)和闪蒸汽回收塔(5),闪蒸槽(1)通过阀门Ⅲ(8)连接到预热炉(2)的驰放气进气口,阀门Ⅲ(8)前端通过阀门Ⅰ(6)连接到闪蒸汽回收塔(5)的下端进气端,闪蒸汽回收塔...
【专利技术属性】
技术研发人员:杜汉双,王绍武,董荣迁,李文龙,
申请(专利权)人:山东荣信集团有限公司,
类型:新型
国别省市:山东,37
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