一种废气中二氯甲烷的回收工艺制造技术

一种废气中二氯甲烷的回收工艺，具体步骤是：第一步，将含有二氯甲烷的废气(1)引入二氯甲烷吸收塔(3)的底部，将贫白油(12)送入二氯甲烷吸收塔(3)的顶部，两相在塔内逆流接触后，将塔顶尾气(5)直排大气，将富白油(4)送入解吸塔(8)；第二步，在解吸塔(8)中上部引入第一步的富白油(4)，解吸塔(8)塔顶蒸汽经干式真空泵(9)抽出并冷凝后回流，并采出二氯甲烷液体(11)，用解析后的贫白油(12)给富白油(4)预热，而后冷却到20℃回到二氯甲烷吸收塔(3)回用。

A recovery process of dichloromethane from waste gas

The first step is to introduce the waste gas (1) containing dichloromethane into the bottom of the dichloromethane absorption tower (3), and send the lean white oil (12) to the top of the dichloromethane absorption tower (3). After the two phases are in reverse flow contact in the tower, the tail gas (5) on the top of the tower is directly discharged to the atmosphere, and the rich white oil (4) is sent to the desorption tower (8); the second step is to introduce the lean white oil (12) into the top of the desorption tower (8) In the first step, the rich white oil (4) is pumped out by the dry vacuum pump (9) on the top of the desorber (8) and condensed, then the steam flows back, and the dichloromethane liquid (11) is produced. The analyzed lean white oil (12) is used to preheat the rich white oil (4), then cooled to 20 \u2103 and returned to the dichloromethane absorption tower (3) for reuse.

【技术实现步骤摘要】
【国外来华专利技术】PCT国内申请，说明书已公开。

【技术保护点】
PCT国内申请，权利要求书已公开。/n

【技术特征摘要】
【国外来华专利技术】20170414...

【专利技术属性】
技术研发人员：项威，来庆发，王庆云，宋兴豪，陈干英，姚红果，丁少峰，陈学青，张伟，
申请(专利权)人：山东爱地高分子材料有限公司，石家庄工大化工设备有限公司，
类型：发明
国别省市：山东;37