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用UNIFAC模型预测有机硫化物-烃类体系汽-液平衡 被引量:1

Prediction of Vapor-Liquid Equilibrium for Organic Sulfur Compound-Hydrocarbon With UNIFAC Model
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摘要 汽油中硫化物与烃类之间的汽-液平衡是渗透汽化汽油脱硫技术的基础理论之一。研究了不同UNIFAC模型对有机硫化物-烷烃体系的汽-液平衡的预测精度。结果表明,笔者提出的UNIFAC-r^(1/6)模型对有机硫化物-烷烃类化合物体系的气相组成偏差与压力偏差均低于其他UNIFAC模型,尤其对含有支链烷烃的溶剂体系与非理想性较高的噻吩-正己烷体系,建立的模型能够用于预测汽油体系中有机硫化物-烃类的汽-液平衡。 The vapor-liquid equilibrium of sulfur compound-hydrocarbon is one of the basic theories of pervaporation desulphurization in gasoline. Modified UNIFAC model (UNIFAC-r1/6) was employed to predict the vapor-liquid equilibrium of sulfur compounds and hydrocarbons. Compared with existed UNIFAC models, the result calculated by UNIFAC-r1/6 model was more accurate, especially for the systems of diethyl sulfide-2,2,4-trimethylpentane and thiophene-n-hexane. It is indicated that the UNIFAC-r1/6 model can be used to predict the vapor-liquid phase equilibrium of sulfur compounds and hydrocarbons in gasoline.
出处 《石油学报(石油加工)》 EI CAS CSCD 北大核心 2011年第4期588-592,共5页 Acta Petrolei Sinica(Petroleum Processing Section)
基金 教育部新世纪优秀人才培育计划(NCET-06-0605) 教育部创新团队"重质油高效转化的绿色化学与工程" 教育部高等学校博士学科点专项科研基金(20090133120008) 中空纤维膜材料与膜过程省部共建国家重点实验室培育基地开放基金(201042) 山东省自然科学基金(ZR2009BQ011) 中国博士后科学基金(20070420119 200801218)项目资助
关键词 汽-液平衡 UNIFAC模型 有机硫化物 基团贡献 vapor-liquid equilibrium UNIFAC models organic sulfur compounds groupcontribution
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参考文献12

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