本文選題：2-甲基噻吩 + 2　； 參考：《太原理工大學》2017年碩士論文

【摘要】：在煤化工領(lǐng)域,我國精煉焦化粗苯是生產(chǎn)苯、甲苯、二甲苯的一個主要途徑。在焦化粗苯精制過程中含硫化合物的脫除一直是一個技術(shù)難題,尤其是噻吩類硫化物的脫除。在石油化工領(lǐng)域,我國車用汽油的生產(chǎn)技術(shù)主要依靠催化裂化技術(shù),汽油中的硫含量明顯高于發(fā)達國家。隨著我國對化工產(chǎn)品中含硫化合物含量的要求越來越嚴格,需要對化工產(chǎn)品的含硫化合物進行深度脫除,而汽液相平衡數(shù)據(jù)是設(shè)計分離設(shè)備和混合物分離的重要依據(jù)。由于文獻中發(fā)表的關(guān)于噻吩類體系的汽液相平衡數(shù)據(jù)較少,本研究選取2-甲基噻吩和2,5-二甲基噻吩兩種含硫化合物為研究對象。本研究通過建立減壓汽液平衡系統(tǒng),測定了兩種含硫化合物2-甲基噻吩、2,5-二甲基噻吩分別與烷烴(2,2,4-三甲基戊烷、正庚烷、正壬烷、正癸烷)、烯烴(2,3-二甲基-1-丁烯、2,3-二甲基-2-丁烯、1-辛烯、環(huán)己烯)和環(huán)烷烴(甲基環(huán)戊烷、環(huán)己烷、甲基環(huán)己烷、乙基環(huán)己烷)共二十三組二元體系在90.00KPa下的汽液平衡數(shù)據(jù),所有二元體系都通過了熱力學一致性檢驗。實驗數(shù)據(jù)分別用Wilson、NRTL、UNIQUAC三種活度系數(shù)模型對數(shù)據(jù)進行關(guān)聯(lián),得到了二元體系的交互作用參數(shù)。為了能夠用實驗體系推算未發(fā)表的體系,本文采用UNIFAC-Dortmund和UNIFAC-Original基團貢獻法對所有組分進行基團拆分,擬合得到多組基團間的交互作用參數(shù)。還利用這兩種模型對實驗數(shù)據(jù)進行擬合,將得到的擬合數(shù)據(jù)與實驗數(shù)據(jù)進行了分析。通過分析實驗數(shù)據(jù)發(fā)現(xiàn),在2,2,4-三甲基戊烷+2-甲基噻吩和乙基環(huán)己烷+2,5-二甲基噻吩這兩個體系存在共沸,其中后者為正偏差溶液,存在最低恒沸點。
[Abstract]:In the field of coal chemical industry, refining coking crude benzene in China is a major way to produce benzene, toluene and xylene. In the process of refining coking crude benzol, the removal of sulfur compounds is a technical problem, especially the removal of thiophene sulfide. In the field of petrochemical industry, the production technology of vehicle gasoline in our country mainly depends on the technology of catalytic cracking. Sulfur content in gasoline is obviously higher than that of developed countries. With the increasingly stringent requirements for the content of sulfur compounds in chemical products, the sulfur compounds in chemical products need to be removed in depth. The vapor liquid equilibrium data is the important basis for the separation of design separation equipment and mixtures. 2- methyl thiophene and 2,5- two methyl thiophene compounds were selected as the research objects. In this study, two kinds of sulfur compounds, 2- methyl thiophene, 2,5- two methyl thiophene and alkanes (2,2,4- three methyl pentane, n-heptane, n-nonane, n-decane, and decane) were determined by the establishment of a vacuum vapor liquid equilibrium system. Alkenes (2,3- two methyl -1- butene, 2,3- two methyl -2- butene, 1- octene, cyclohexene) and naphthene (methyl cyclopentane, cyclohexane, methyl cyclohexane, ethyl cyclohexane) in a total of twenty-three groups of two system of vapor liquid equilibrium data under 90.00KPa, all two systems have passed the thermodynamic consistency test. Experimental data are used Wilson, NRTL, respectively, UNIQUAC three activity coefficient models are related to the data, and the interaction parameters of the two element system are obtained. In order to be able to calculate the unpublished system by the experimental system, this paper uses the UNIFAC-Dortmund and UNIFAC-Original group contribution method to divide all the components into the group, and gets the interaction parameters between the groups. These two models are used to fit the experimental data, and the obtained data are analyzed with the experimental data. Through the analysis of the experimental data, it is found that the two systems of 2,2,4- three methyl pentane methyl thiophene and ethyl cyclohexane +2,5- two methyl thiophene are azeotrope, the latter is a positive deviation solution, and the lowest azeotrope exists.

【學位授予單位】：太原理工大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TQ013.1

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本文編號：1884684