摘要
布洛芬产品缩合工序产生一次缩合洗水,其中第一遍洗水目前由相关方处理,第二遍洗水进入高浓废水,由污水处理厂处理。通过实验,将第二次洗水收集,代替自来水用于第一次洗涤;利用化学处理和物理处理相结合的方法,将第一次洗水中的硫酸转化为硫酸钠,防止了硫酸破坏新戊二醇;利用相似相溶原理,利用工业乙醇溶解新戊二醇而与硫酸钠固液分离,成功将新戊二醇纯化后回用于缩合反应,既提高了新戊二醇原料的利用率,又减少了污染物的排放。
Condensation step of Ibuprofen product produces the washing water of the 1st condensation reaction. The first time of washing water is treated by the related party, and the second time goes into the high concentrated waste water, and is treated by the Sewage Treatment Plant. We make an experiment, and collect the second time of washing water and replace tap water to be used for the first time of washing; Use a combination method of chemical treatment and physical treatment to convert sulfuric acid in the first time of washing water to sodium sulfate to prevent sulfuric acid from destroying neopentyl glycol; Industrial ethanol dissolves neopentyl glycol and separates from sodium sulfate based on the principle of similar mutual solubility and successfully purify neopentyl glycol and re-use in condensation reaction. This method not only improves the utilization ratio of raw material-neopentyl glycol, but also reduces the pollutant emission.
出处
《科技信息》
2012年第15期216-217,共2页
Science & Technology Information
关键词
一次缩合洗水
相关方
相似相溶原理
减排
Washing water of the 1st condensation reaction
Related party
Principle of similar mutual solubility
Emission reduction
