乙酸异丙酯萃取酚水中酚的研究

发布时间：2018-02-26 03:28

  本文关键词： 乙酸异丙酯 分配系数 水解反应 萃取比　出处：《化学工程》2017年07期 　论文类型：期刊论文

【摘要】：为提高煤气化酚水酚类物质的回收率,研究一种新的萃取剂——乙酸异丙酯。从分配系数、pH值、萃取比、水解反应(包括水解反应速率及其动力模型)等方面研究其萃取性能。实验结果显示乙酸异丙酯对酚类的萃取效果高于异丙醚,略低于甲基异丁基甲酮(MIBK)。从工业运行角度考虑,比较理想的萃取工艺条件:萃取温度30—60℃,pH值8.3—8.5,萃取比1∶6—1∶8,萃取级数为三级。对比不同pH值,温度下乙酸异丙酯的分解速率及碱性条件下的水解动力学,发现乙酸异丙酯的水解量较小,相对于挥发损失可不必考虑。因此乙酸异丙酯是一种可替代的酚类萃取剂。
[Abstract]:In order to improve the recovery rate of phenol and water phenols in coal gasification, a new extractant, isopropyl acetate, was studied. The effects of isopropyl acetate on the extraction of phenols were found to be higher than those of isopropyl ether and slightly lower than that of methyl isobutyl methyl ketone MIBKN from the point of view of industrial operation, the results showed that the extraction efficiency of isopropyl acetate was higher than that of isopropyl ether and slightly lower than that of methyl isobutyl ketone. The optimum technological conditions are as follows: extraction temperature 30-60 鈩，

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