离子液体烷基化油中氯代烃生成机理的探究
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摘要
利用离子液体催化异丁烷与2-丁烯生产烷基化油已成为近年的研究热点,烷基化油中氯代烃生成机理的研究对于提高汽油的清洁环保性能具有重要的指导意义。利用原子系数矩阵法确定了生成氯代烃反应体系的独立反应数及一组独立反应,利用热力学方法计算了该反应体系中各独立反应在不同条件下的吉布斯自由能变及平衡常数,据此可判断各独立反应在指定条件下发生的可能性,分析结果可为烷基化油中氯代烃的生成机理研究提供指导。
The use of ionic liquid to catalyze the alkylation of isobutane and 2-butene has become a hot topic in recent years. The investigation on the formation mechanism of chlorinated hydrocarbons during the production process of alkylated oil catalyzed by ionic liquid is of great significance to improve the clean and environmental performance of gasoline. A set of independent reactions of chlorinated hydrocarbon formation system were determined by atomic coefficient matrix method. The Gibbs free energy change and equilibrium constant of each independent reaction in different reacting conditions were calculated by thermodynamics analysis method, which can be used to evaluate the occurrence possibility of the specified independent reaction in the given reacting conditions, and the results can be used to insight the formation mechanism of chlorinated hydrocarbons during the production process of alkylated oil catalyzed by ionic liquid.
The use of ionic liquid to catalyze the alkylation of isobutane and 2-butene has become a hot topic in recent years. The investigation on the formation mechanism of chlorinated hydrocarbons during the production process of alkylated oil catalyzed by ionic liquid is of great significance to improve the clean and environmental performance of gasoline. A set of independent reactions of chlorinated hydrocarbon formation system were determined by atomic coefficient matrix method. The Gibbs free energy change and equilibrium constant of each independent reaction in different reacting conditions were calculated by thermodynamics analysis method, which can be used to evaluate the occurrence possibility of the specified independent reaction in the given reacting conditions, and the results can be used to insight the formation mechanism of chlorinated hydrocarbons during the production process of alkylated oil catalyzed by ionic liquid.
引文
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[2]方慧萍.氢氟酸的污染与防治[J].石油化工环境保护,1997,1(1):52-54.Fang H P. Hydrofluoric acid pollution and controlling[J]. Environment Protection in Petrochemical Industry,1997,1(1):52-54.
[3]刘植昌,张睿,刘鹰,等.复合离子液体催化碳四烷基化反应性的研究[J].燃料化学学报,2006,34(3):328-331.Liu Z C,Zhang R,Liu Y,et al. Study on isobutane alkylation catalyzed by composite ionic liquid[J]. Journal of Fuel Chemistry and Technology,2006,34(3):328-331.
[4]毛微,李丹东,赵德智,等.室温离子液体——一种新型的绿色溶剂与催化剂[J].石油化工高等学校学报,2003,16(3):9-14.Mao W,Li D D,Zhao D Z,et al. Room temperature ionic liquids:A kind of novel green solvents and catalysts[J]. Journal of Petrochemical Universities,2003,16(3):9-14.
[5]张巍.离子液体催化C4烷基化油中氯代烃的表征及吸附脱除[D].北京:中国石油大学(北京),2009.
[6]李柏林,吴瑕.酸性离子液体催化异丁烷/丁烯烷基化研究进展[J].石油化工,2016,45(10):1272-1278.Li B L,Wu X. Advances in alkylation of isobutane/butene catalyzed by acidic ionic liquid[J]. Petrochemical Technology,2016,45(10):1272-1278.
[7]樊秀菊,朱建华,宋海峰,等.原油/馏分油中氯的分布规律[J].辽宁石油化工大学学报,2009,29(4):39-42.Fan X J,Zhu J H,Song H F,et al. Distribution of chlorines in crude oil and its distillates[J]. Journal of Liaoning University of Petroleum,2009,29(4):39-42.
[8]朱开宏,袁渭康.化学反应工程分析[M].北京:高等教育出版社,2002.
[9]黎小辉,朱建华,郝代军,等.液化石油气芳构化反应体系的热力学分析[J].石油与天然气化工,2010,39(6):465-469.Li X H,Zhu J H,Hao D J,et al. Thermodynamic analysis on the aromatization of liquefied petroleum gas[J]. Chemical Engineering of Oil and Gas,2010,39(6):465-469.
[10]刘鹰,孙宏娟,丛迎楠,等. Cu对离子液体异丁烷/丁烯烷基化反应选择性的影响研究[J].燃料化学学报,2014,42(8):1010-1016.Liu Y,Sun H J,Cong Y N,et al. Study on the selectivity of isobutane/2-butene alkylation catalyzed by ionic liquid with Cu compound[J]. Journal of Fuel Chemistry and Technology,2014,42(8):1010-1016.
[11]冯伯华,陈自新,李步年,等.化学工程手册[M].北京:化学工业出版社,1992.
[12]董新法,方利国,陈励.物性估算原理及计算机计算[M].北京:化学工业出版社,2006.
[13]陈光进,孙长宇,张强,等.化工热力学[M].北京:石油工业出版社,2006.
[14]龚纯,王正林.精通MATLAB最优化计算[M].北京:电子工业出版社,2012.