ZnNi/硅藻土-Al2O3吸附剂对噻吩的反应吸附脱除性能研究

中国炼油与石油化工 ›› 2012, Vol. 14 ›› Issue (3): 33-38.

• Scientific Research • 上一篇下一篇

ZnNi/硅藻土-Al2O3吸附剂对噻吩的反应吸附脱除性能研究

孟璇¹,²,翁惠新³,施力⁴

1. East China University of Science and Technology
2. 华东理工大学
3. 华东理工大学石油加工研究所
4. 华东理工大学化工学院石油加工研究所

收稿日期:2012-03-05 修回日期:2012-04-23 出版日期:2012-09-30 发布日期:2012-10-22
通讯作者: 孟璇 E-mail:mxmx010@126.com

Reactive Adsorption of Thiophene onZnNi/Diatomite-Pseudo-Boehmite Adsorbents

Received:2012-03-05 Revised:2012-04-23 Online:2012-09-30 Published:2012-10-22
Contact: xuan meng E-mail:mxmx010@126.com

摘要/Abstract

摘要： 本论文采用实验室小型固定床装置，考察了ZnNi/硅藻土-Al2O3吸附剂对噻吩的吸附脱硫性能。采用XRD分析手段对吸附剂进行表征，系统研究了Zn/Ni摩尔比、模型原料种类对吸附剂反应吸附脱硫性能的影响及吸附剂的再生性能，并采用XRD及MS等分析手段对反应吸附脱硫机理进行了探讨。机理分析结果表明，首先噻吩在吸附剂表面的活性Ni中心上分解，导致C-S键断裂, 使Ni被硫化成Ni3S2，从而释放出烃类物种；接着Ni3S2在氢气的作用下再次被还原成具有活性的单质Ni，生成H2S；最后，H2S迅速与吸附剂中ZnO组分反应生成ZnS。

关键词: 反应吸附, 脱硫, 噻吩, 烯烃, 再生

Abstract: The thiophene removal ability of the synthesized ZnNi/diatomite-pseudo-boehmite adsorbent was tested in a lab-scale fixed-bed reaction system. X-ray diffractograms (XRD) were used to characterize the samples. The effects of Zn/Ni molar ratio, various model fuels and regeneration patterns on the RADS tests were studied. The adsorption mechanism was investigated by XRD and MS analyses. The results indicted that thiophene in the model fuel was first decomposed on the surface Ni of the adsorbent to form Ni3S2 while the hydrocarbon portion of the molecule was released back into the process stream, followed by reduction of Ni3S2 to form H2S in the presence of H2, and then H2S is stored in the adsorbent accompanied by the conversion of ZnO into ZnS.

Key words: Reactive adsorption, desulfurization, thiophene, olefin, regeneration

孟璇翁惠新施力. ZnNi/硅藻土-Al2O3吸附剂对噻吩的反应吸附脱除性能研究[J]. 中国炼油与石油化工, 2012, 14(3): 33-38.

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ZnNi/硅藻土-Al2O3吸附剂对噻吩的反应吸附脱除性能研究

Reactive Adsorption of Thiophene onZnNi/Diatomite-Pseudo-Boehmite Adsorbents

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