高等学校化学学报 ›› 2020, Vol. 41 ›› Issue (2): 317-323.doi: 10.7503/cjcu20190474

• 物理化学 • 上一篇    下一篇

铁基离子液体/NHD吸收氧化H2S的反应动力学

张丽1,钱明超1,刘雪珂1,高帅涛1,余江1,*(),谢海深2,王宏斌2,孙风江2,苏向红3   

  1. 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
  • 收稿日期:2019-09-03 出版日期:2020-02-10 发布日期:2019-12-31
  • 通讯作者: 余江 E-mail:yujiang@mail.buct.edu.cn
  • 基金资助:
    国家科技部“十三五”重大专项资助(2016ZX05017-004)

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

ZHANG Li1,QIAN Mingchao1,LIU Xueke1,Gao Shuaitao1,YU Jiang1,*(),XIE Haishen2,WANG Hongbin2,SUN Fengjiang2,SU Xianghong3   

  1. 1. Beijing Key Laboratory of Energy Environmental Catalysis, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029 , China
    2. Coking Plant, Hegang Xuangang Co., Ltd, Zhangjiakou 075100, China
    3. R&D Department, Zhangjiakou Tianlong Technology Development Co., Ltd, Zhangjiakou 075100, China
  • Received:2019-09-03 Online:2020-02-10 Published:2019-12-31
  • Contact: Jiang YU E-mail:yujiang@mail.buct.edu.cn
  • Supported by:
    Supported by the National Major Scientific and Technological Special Project of the Ministry of Science and Technology of China(2016ZX05017-004)

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=54.62exp(-11720/RT c H 2 S ·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.

关键词: 铁基离子液体, 聚乙二醇二甲醚, 硫化氢, 脱硫, 动力学

Abstract:

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 ) · c H 2 S · c Fe ( ) , 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.

Key words: Iron-based ionic liquid, Polyethylene glycol dimethyl ether, H2S, Desulfurization, Dynamic

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