摘要
榆林化学公司180万t/a乙二醇项目每年生产副产品重质乙二醇约23 000 t,重质二元醇售价低、工业应用范围并不广泛。为提高煤制乙二醇所产废液重质二元醇的利用价值,做好废液的回收利用,将副产品重质二元醇采用不同的处理方法,即活性炭吸附、蒸馏、硅胶吸附、碱性处理等方法对重质二元醇提纯处理。研究发现将重质二元醇通过蒸馏效果最好,可以去除杂质并将乙二醇含量提升至94%左右,大大提升产品质量和产品附加值,符合公司煤化工产业绿色发展战略目标。
The 180-million-ton/year ethylene glycol project of Yulin Chemical Company produces about 23,000 tons of heavy dibasic alcohol as a byproduct per year.The heavy dibasic alcohol have low selling prices and limited industrial applications.In order to improve the utilization value of heavy dibasic alcohol in the waste liquid produced from coal to ethylene glycol,it is necessary to do a good job in the recycling and utilization of waste liquid.The different treatment methods,namely activated carbon adsorption,distillation,silica gel adsorption,and alkaline treatment were used to purify and treat the by-product heavy dibasic alcohol.It found that heavy dibasic alcohol has the best effect through distillation.lt can remove impurities and increase the contentof ethylene glycol to about 94%,which greatly improve product quality and product added value,and is in line with thecompany's green development strategy goal of the coal chemical industry.
作者
李小洁
任晓明
朱序阳
崔飞飞
付丽琼
袁立勇
刘飞飞
赵俊美
Li Xiaojie;Ren Xiaoming;Zhu Xuyang;Cui Feifei;Fu Liqiong;Yuan Liyong;Liu Feifei;Zhao Junmei(Yulin Chemical Corporation Ltd.,Shaanxi Coal Group,Yulin 719300,China)
出处
《煤炭与化工》
2025年第6期142-145,151,共5页
Coal and Chemical Industry
基金
陕西煤化工集团有限责任公司科技研发类投资项目(2023SMHKJ-B-J-128)。
关键词
重质二元醇
乙二醇
预处理
活性炭
硅胶
蒸馏
heavy dibasic alcohol
ethylene glycol
pretreatment
distillation
activated carbon
adsorption
distillation
