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苯乙烯 ')">"> 苯乙烯 , 聚合 , 汽油分馏塔

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font-size:14px, This paper introduces the successful application of extraction process of styrene from pyrolysis gasoline in Zhenhai Project, and summarizes the measures for preventing styrene polymerization such as reducing the operating temperature of the system, shortening the residence time of high concentration styrene material in high temperature zone, and adding inhibitors into distillation column. The upper and middle sections of gasoline fractionator in ethylene plant are easily blocked due to the high concentrations of polymers such as styrene and indene. Drawing lessons from the anti-polymerization measures of styrene extraction process, an anti-polymerization scheme is formulated for ethylene plant to achieve long-term operation. ')">">This paper introduces the successful application of extraction process of styrene from pyrolysis gasoline in Zhenhai Project, and summarizes the measures for preventing styrene polymerization such as reducing the operating temperature of the system, shortening the residence time of high concentration styrene material in high temperature zone, and adding inhibitors into distillation column. The upper and middle sections of gasoline fractionator in ethylene plant are easily blocked due to the high concentrations of polymers such as styrene and indene. Drawing lessons from the anti-polymerization measures of styrene extraction process, an anti-polymerization scheme is formulated for ethylene plant to achieve long-term operation.