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化学吸附法脱除FCC汽油中含硫化合物的研究

作　者: Salissou Zakary Mahaman Nour
导　师: 施力
学　校: 华东理工大学
专　业: 油气储运工程
关键词: FCC汽油脱硫吸附 S-Zorb 噻吩分子筛 Ni2O3 ZnO
分类号: TE624.55
类　型: 硕士论文
年　份: 2011年
下　载: 18次
引　用: 0次
阅　读: 论文下载

内容摘要

虽然流化催化裂化(FCC)工艺已经商业化超过60年,但是该技术仍在不断的发展以适应新的挑战。本研究提出并描述了FCC汽油吸附脱硫用的沸石吸附剂及其工艺的研究进展。为了减少液体碳氢燃料中的硫含量以加强环境保护,在镍锌脱硫吸附剂上对模拟FCC汽油进行了S-Zorb吸附。首先制备了一系列沸石吸附剂,并对它们的噻吩吸附脱硫能力进行了测试。这些吸附剂对噻吩脱除具有显著的选择性。在进一步的工作中,为筛选更好的吸附剂,用氮气吸附法对吸附剂的比表面积,总孔体积以及孔大小和平均孔径进行了分析。同时用X-射线衍射,热重分析对催化剂进行了表征。X-射线衍射图表明,ZnO颗粒与氧化镍颗粒按一定比例很好地分散在了HY沸石上,并表现出较高的结晶度。TPR等分析还显示,在350℃以上时,由于负载的Ni2+减少而减少了氢气的消耗量。在活性评价时,反应温度,压力和氢油比都在脱硫中起到了关键作用,并且吸附剂脱硫率保持在90%以上。

全文目录

ABSTRACT 5-6摘要 6-11Chapter Ⅰ Introduction and background 11-13Chapter Ⅱ Literature review 13-27 2.1 Type of sulfur and distribution in gasoline 13 2.2 FCC gasoline hydrodesulfurization technologies 13-15 2.2.1 Conventional hydrodesulfurization 14 2.2.2 Selective hydrodesulfurization 14 2.2.3 Deep hydrodesulfurization combined with octane recovery processing 14-15 2.3 FCC gasoline non-hydrodesulfurization technologies 15-16 2.3.1 Alkylation desulfurization 15 2.3.2 Extractive desulfurization 15-16 2.3.3 Oxidative desulfurization 16 2.3.4 Complexation desulfurization 16 2.4 FCC gasoline adsorption desulfurization technologies 16-25 2.4.1 Research progress in the adsorbent materials 17-19 2.4.2 Research progress of sorbent technology 19-25 2.5 Experimental contents 25-27Chapter Ⅲ Experimental part 27-35 3.1 Experimental reagents 27-28 3.2 Adsorbent and model feed preparation 28-29 3.2.1 Carriers and Chemical reagents 28 3.2.2 Adsorbent precursor preparation 28-29 3.2.3 Preparation of the model solution 29 3.3 Experimental process and methods 29-30 3.4 Experimental Conditions 30-31 3.4.1 Reduction conditions 30 3.4.2 Reaction conditions 30-31 3.4.3 Gas chromatographer operating set 31 3.5 List of the reaction equipments used 31-32 3.6 Experiment devises description 32-33 3.6.1 Temperature controller 32 3.6.2 Experimental reactor 32-33 3.6.3 Experiment analytical instrument 33 3.7 Adsorbent screening analytical instrument 33-35Chapter Ⅳ Experimental results and discussion 35-62 4.1 Experimental study on zeolite adsorbents desulfurization performance 35-39 4.1.1 Different zeolite adsorbents desulfurization performance test 37-38 4.1.2 Summary on the different zeolite adsorbents desulfurization test 38-39 4.2 Experimental study of HY-zeolite adsorbent desulfurization performance 39-47 4.2.1 Effect of Zn/Ni molar ratios on the sorbent desulfurization performance 39-41 4.2.2 Characterization of different Zn/Ni molar ratios adsorbents 41-42 4.2.3 Summary of different Zn/Ni molar ratios effects 42-43 4.2.4 Effect of carrier different proportions on the adsorbent desulfurization performance 43-45 4.2.5 Adsorbents Nitrogen adsorption test 45-47 4.2.6 Summary of carrier different proportions effect on the adsorbent desulfurization performance 47 4.3 Effect of calcination temperatures on the adsorbents desulfurization performance 47-50 4.3.1 Summary of calcination temperatures effect 49 4.3.2 Adsorbent thermogravimetric analysis (TGA) 49-50 4.4 Effect of catalyst reduction time on the adsorption desulfurization performance 50-53 4.4.1 Summary of catalysts reduction times effect 52 4.4.2 Temperature programmed reduction (TPR) of catalyst 52-53 4.5 Effect of reaction conditions on the adsorption desulfurization performance 53-60 4.5.1 Effect of H_2/Oil ratios on the adsorption desulfurization performance 53-55 4.5.2 Summary of H_2/Oil ratios effect on the adsorption desulfurization performance 55-56 4.5.3 Effect of reaction temperatures on the adsorption desulfurization performance 56-57 4.5.4 Summary of reaction temperatures effect on the adsorption desulfurization performance 57-58 4.5.5 Effect of reaction pressures on the adsorption desulfurization performance 58-59 4.5.6 Summary of reaction pressure effect on the adsorption desulfurization performance 59-60 4.6 XRD analysis for ZnO/NiO adsorbent before and after desulfurization reaction 60-62Conclusion 62-63References 63-67Acknowledgment 67-68卷内备考表 68

化学吸附法脱除FCC汽油中含硫化合物的研究

内容摘要

全文目录

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