中华医学超声杂志

应用化学 ›› 1997, Vol. 0 ›› Issue (5): 83-85.

• 研究论文 • 上一篇    下一篇

有机硫化物的等离子体液相氧化脱硫

刘万楹, 雷正兰, 吕伟, 王晋昆   

  1. 中国科学院成都有机化学研究所, 成都 610041
  • 收稿日期:1996-12-17 修回日期:1997-07-03 出版日期:1997-10-10 发布日期:1997-10-10
  • 基金资助:
    国家自然科学基金

Plasma Oxidative Desulfurization of Organic Sulfides in Liquid Phase

Liu Wanying, Lei Zhenglan, Lu Wei, Wang Jinkun   

  1. Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041
  • Received:1996-12-17 Revised:1997-07-03 Published:1997-10-10 Online:1997-10-10

PDF

389

被引次数

53 | 7

摘要： 原油中以硫醇、硫醚和噻吩的形式存在的硫对原油加工和环境有害. 通常的脱硫技术是催化氢化法. 如果原油中含有V、Ni等金属, 催化氢化法效果较差. 等离子体脱硫具有很高的反应激活能力, 又可避免催化剂“中毒”. 硫醇、硫醚和噻吩的等离子体气相脱硫已取得一些结果, 证明了在等离子体反应体系中加入氧可明显提高脱硫度[1, 2]. 等离子体液相反应比气相反应具有更明显的优势, 因为它可抑制气相反应不可避免的连串反应, 同时具有比气相反应更好的产物淬冷环境[3]. 等离子体液相反应的选择性大大优于那些相似的气相反应[4, 5]. 本研究将等离子体液相反应的优势和氧对脱硫反应的有效作用结合起来, 即氧等离子体与有机硫化物液体表面相互作用的方法, 获得了比气相反应更高的脱硫度。

关键词: 等离子体, 氧化脱硫, 液相, 硫醇, 硫醚, 噻吩

Abstract: Factors affecting plasma oxidative desulfurization of organic sulfides in mixture with n-heptane were investigated. As organic sulfide isobutyl mercaptan(1.20%), ethyl thioether(1.44%), and thiophene(1.32%)with n-heptane were examined separately. The results show that the plasma load of power, i.e. ratio of oxygen flow rate to plasma power, and reaction time are primary factors affecting the desulfurization, when the temperature of reactant was about -85℃. Under reasonable conditions, the degree of desulfurization of isobutyl mercaptan, ethyl-thioether and thiophene can be achieved up to 99%, 80% and 79% respectively.

Key words: plasma, oxidative desulfurization, liquid phase, mercaptan, thioether, thiophene

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