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石油与天然气化工
CHEMICAL ENGINEERING OF OIL & GAS
从含酚馏分油中萃取酚的溶剂选择及萃取条件研究
刘继东刘爽吕建华李扬陈甲成
河北工业大学化工学院
2017
摘要目前对于含酚油中的酚类提取，存在脱酚率低、酸碱用量大，环境污染等问题，针对现有技术的不足，选取合适萃取剂，利用溶剂萃取法提取含酚油中的酚类化合物，以达到绿色化工环保技术的要求。通过筛选有机溶剂，确定以乙醇胺为萃取剂提取含酚馅分油中的酚类化合物。精馅切取含酚油中170～210℃富酚馅分作为萃取原料,进行萃取实验，在充分振荡、充分静置的前提下，得到适宜的萃取条件萃取温度为室温25℃，萃取剂与原料油质量比为0.4，在此条件下，其单级萃取率可达95% 以上。
关键词含酚油酚类化合物溶剂萃取萃取率
中图分类号：TE626
文献标志码：AD0I：10.3969/i.issn.1007-3426.2017.04.006
Study on solventselectionand extractionconditions of extracting
phenolic compounds from distillate oil containing phenol
Liu Jidong , Liu Shuang, Lyu Jianhua, Li Yang, Chen Jiacheng
Department of Chemical Engineering , Hebei University of Technology , Tianjin, Chind
Abstract: At present,for the extraction of phenols in phenolic oil, there are a series of problems such as low phenol removal rate , large amount of acid and alkali, environmental pollution and so on . In order to meet the environmental protection technology requirements of green chemical industry , the appropriate extraction agent was selected and the phenolic compound in the phenolic oil was extracted by solvent extraction. After screening different kinds of organic solvent,MEA was determined as the most suitable solvent for recovering phenolic compounds from distillate oil . Taking 170 C to 210 C of distillate oil containing phenolic compounds as extraction material , and by the premise of fully oscillation and adequate standing time , the optimum extracting conditions were as follows: the extraction temperature was 25 ℃, themass ratio of solvent to oil was O.4.Under these conditions , the extraction rate of phenolic compounds was more than 95%.
Key words : phenol oil, phenolic compounds, solvent extraction, extraction rate
焦化过程、煤制油过程中生成的中低温煤焦油、煤
液化油及一些石油加工过程中产生的馏分油中含有大量酚类化合物，从含酚油中把具有高附加值的酚类化合物分离出来，可拓宽油品的利用途径，具有广阔的市场需求和巨大的经济效益。
有关含酚油中的酚类回收，目前工业上应用最广
泛的是碱洗法，其工艺主要包括碱洗脱酚和酸化还原两部分1。Zingaro[2]使用甲基磺酸钠水溶液通过盐溶液的浓缩和稀释来提取酚类化合物，此方法虽然提高了酚的选择系数，但仍然要使用大量水，产生难以处
作者简介刘继东（1972一），男，河北工业大学化工学院教授，主要从事化工分离技术的教学与研究工作 E-maififidaf63.com