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METHOD FOR HIGH PURITY MIXED XYLENE BY SELECTIVE SEPARATION ETHYLBENZENE FROM MIXED XYLENE WITH EXTRACTING DISTILLATION
METHOD FOR HIGH PURITY MIXED XYLENE BY SELECTIVE SEPARATION ETHYLBENZENE FROM MIXED XYLENE WITH EXTRACTING DISTILLATION
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机译:萃取精馏从混合二甲苯中选择性分离乙基苯的高纯混合二甲苯的方法。
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摘要
PURPOSE: A method for preparing mixed xylene is provided to additionally obtain ethyl benzene with the high purity by effectively separating the ethyl benzene and zylene isomer. CONSTITUTION: An extraction agent is added in mixed zylene containing ethyl benzene. A distillation process is implemented in order to selectively separate the ethyl benzene from the mixed zylene. The extraction agent is 1,1,2,2-tetrachloride ethane, or the mixture of 1,1,2,2-tetrachloride ethane and ethyl acetate. The temperature of the distillation process is maintained between 175 and 185 degrees Celsius.
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