| 二甲醚经低碳烯烃合成汽油组分正辛烷、对二甲苯热力学分析 |
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| 引用本文： | 户倩倩,谭猗生,韩怡卓,满建明. 二甲醚经低碳烯烃合成汽油组分正辛烷、对二甲苯热力学分析[J]. 天然气化工, 2010, 35(1) |
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| 作者姓名： | 户倩倩 谭猗生 韩怡卓 满建明 |
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| 作者单位： | 1. 中国科学院山西煤炭化学研究所,煤转化国家重点实验室,山西,太原,030001;中国科学院研究生院,北京,100039
2. 中国科学院山西煤炭化学研究所,煤转化国家重点实验室,山西,太原,030001 |
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| 基金项目： | 中国科学院知识创新工程重要方向项目 |
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| 摘 要： | 采用原子矩阵法确定了二甲醚经低碳烯烃制正辛烷和对二甲苯的独立反应数,并通过建立平衡关系,采用文献介绍方法,计算了各个反应的反应热、平衡常数及反应平衡时的平衡组分浓度。经分析表明,反应属放热反应;模型中绝大多数反应能自发进行,并且平衡转化率较高;低温高压有利于正辛烷的生成,而低温低压有利于对二甲苯的生成;丙烯生成正辛烷和对二甲苯的转化率远高于乙烯和丁烯,因此控制中间产物丙烯的含量有利于控制目的产物的产出。
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| 关 键 词： | 二甲醚制低碳烯烃 低碳烯烃制汽油 热力学计算 正辛烷 对二甲苯 平衡组成 |
Thermodynamic analysis for DME conversion to n-octane and p-xylene of gasoline via light olefins |
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| HU Qian-qian,TAN Yi-sheng,HAN Yi-zhuo,MAN Jian-ming. Thermodynamic analysis for DME conversion to n-octane and p-xylene of gasoline via light olefins[J]. Natural Gas Chemical Industry, 2010, 35(1) |
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| Authors: | HU Qian-qian TAN Yi-sheng HAN Yi-zhuo MAN Jian-ming |
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| Affiliation: | HU Qian-qian1,2,TAN Yi-sheng1,HAN Yi-zhuo1,MAN Jian-ming1,2(1.State Key Laboratory of Coal Conversion,Institute of Coal Chemistry,Chinese Academy of Sciences,Taiyuan 030001,China,2.Graduate University of The Chinese Academy of Sciences,Beijing 100039,China) |
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| Abstract: | The number of independent reactions of dimethyl ether(DME) to n-octane and p-xylene via light olefins was obtained by atomic matrix method.Reactions heat,equilibrium constants,equilibrium relationships among the products of all those reactions were calculated through building equilibrium relationships with the methods from literatures.The results show that most of the reactions are exothermic reactions.Most of the reactions in models could proceed spontaneously with high equilibrium conversion.Low temperatu... |
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| Keywords: | DME to lower olefins lower olefins to gasoline thermodynamic calculation n-octane p-xylene equilibrium composition |
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