铁基离子液体/NHD吸收氧化H2S的反应动力学  

Dynamic Study of Oxidative Desulfurization by Iron-based Ionic Liquids/NHD

作　　者：张丽 钱明超 刘雪珂 高帅涛 余江[1] 谢海深 王宏斌 孙风江 苏向红 ZHANG Li;QIAN Mingchao;LIU Xueke;Gao Shuaitao;YU Jiang;XIE Haishen;WANG Hongbin;SUN Fengjiang;SU Xianghong(Beijing Key Laboratory of Energy Environmental Catalysis,College of Chemical Engineering,Beijing University of Chemical Technology,Beijing 100029,China;Coking Plant,Hegang Xuangang Co.,Ltd,Zhangjiakou 075100,China;R&D Department,Zhangjiakou Tianlong Technology Development Co.,Ltd,Zhangjiakou 075100,China)

机构地区：[1]北京化工大学化学工程学院,能源环境催化北京市重点实验室,北京100029 [2]河钢宣钢有限责任公司焦化厂,张家口075100 [3]张家口天龙科技发展有限公司研发部,张家口075100

出　　处：《高等学校化学学报》2020年第2期317-323,共7页Chemical Journal of Chinese Universities

基　　金：国家科技部“十三五”重大专项(批准号:2016ZX05017-004)资助~~

摘　　要：以铁基离子液体(Fe-IL)/聚乙二醇二甲醚(NHD)为脱硫体系,通过静态吸收反应装置研究了共溶体系吸收氧化H2S的动力学过程。结果表明,纯Fe-IL脱硫体系的动力学方程可表示为r=54. 62 exp(-11720/RT)·cH2S·cFe(Ⅲ),Fe-IL/NHD吸收氧化H2S属于快速拟一级反应,复配NHD后,对Fe(Ⅲ)的反应级数随NHD复配比的增大而增大,提高温度和NHD的复配比可强化传质过程,提高脱硫过程的反应速率。The addition of organic solvents in iron-based ionic liquids( Fe-IL) enhances the gas-liquid mass transfer of hydrogen sulfide( H2S) during desulfurization,which can significantly improve the desulfurization efficiency. Definitely,the addition of organic solvents must has a certain influence on the dynamic properties of the desulfurization system. The dynamic properties of H2S absorption in the co-solution desulfurization system of Fe-IL/NHD( polyethylene glycol dimethyl ether) in a static absorption reactor was studied. The results show that the dynamic equation of pure Fe-IL desulfurization system is r = 54. 62 exp(-11720/RT) ·cH2S·cFe( Ⅲ),and the absorption and oxidation of H2S by Fe-IL/NHD is a fast pseudo-first order reaction. After mixing with NHD,the reaction order of Fe( Ⅲ) increases with the increase of the ratio of NHD to Fe-IL. Thus increasing reaction temperature and the ratio of NHD to Fe-IL can enhance the mass transfer process and the reaction rate during the desulfurization process.

关 键 词：铁基离子液体 聚乙二醇二甲醚 硫化氢 脱硫 动力学 

分 类 号：O641[理学—物理化学] TQ028.8[理学—化学]