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实用新型
CN204737903U 一种乙醛乙二醇回收系统 失效 - 权利终止

一种乙醛乙二醇回收系统
摘要：
本实用新型公开了一种乙醛乙二醇回收系统，包括酯化废水收集罐、一号汽提塔、汽提尾气冷凝单元、乙醛精馏塔、乙醛冷凝单元、乙醛储存单元、二号汽提塔、乙二醇分离塔和乙二醇水溶液中间槽，酯化废水收集罐、一号汽提塔、汽提尾气冷凝单元、乙醛精馏塔、二号汽提塔和乙二醇分离塔通过管道依次连接；所述乙醛精馏塔另通过管道连接乙醛冷凝单元，乙醛冷凝单元另一端连接乙醛储存单元；所述二号汽提塔另通过管道连接乙二醇水溶液中间槽。本实用新型处理过的污水COD值在3000mg/L以下；酯化废水中乙醛回收率在99.5％以上；回收到乙二醇的浓度在85％以上；回收到乙醛的质量指标能到达用乙烯氧化得到乙醛的质量指标。
摘要（英）：

The utility model discloses an acetaldehyde ethylene glycol recovery system, grooves in the middle of the wastewater collection jar of esterifying, strip tower, strip tail gas condensation unit, acetaldehyde rectifying column, acetaldehyde condensation unit, acetaldehyde storage unit, no. Two strip towers, ethylene glycol knockout tower and glycol water, the wastewater collection jar of esterifying, strip tower, strip tail gas condensation unit, acetaldehyde rectifying column, no. Two strip towers and ethylene glycol knockout tower connect gradually through the pipeline, the acetaldehyde rectifying column is in addition through pipe connection acetaldehyde condensation unit, acetaldehyde condensation unit other end connection acetaldehyde storage unit, no. Two strip towers are in addition through groove in the middle of the pipe connection glycol water. The utility model discloses the sewage COD value of handling is below 3000mgL, esterify the acetaldehyde rate of recovery in the waste water more than 99.5%, the concentration of retrieving ethylene glycol is more than 85%, the quality index who retrieves acetaldehyde can reach the quality index who obtains acetaldehyde with ethylene oxidation.

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