文献类型：期刊文献

英文题名：Investigation on aquathermolysis desulfurization by cutting off C-S bond in thiophene over Fe-Zr-Al catalyst facilitated by surfactants

作者：Lv, Haiyang[1];Cui, Lingrui[1];Xu, Xiaobin[2];Cen, Lian[1];Xu, Jun[3];Cao, Fahai[3]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, Shanghai, Peoples R China;[2]Sinopec Qilu Co, Etroleum Proc Res Inst, Zibo, Shandong, Peoples R China;[3]East China Univ Sci & Technol, Engn Res Ctr Large Scale, Shanghai, Peoples R China

年份：2022

卷号：44

期号：3

起止页码：5755

外文期刊名：ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS

收录：;EI(收录号：20222812357410);WOS:【SCI-EXPANDED(收录号:WOS:000819983300001)】；

基金：This research was supported by the China Petroleum and Chemical Corporation [118004-6].

语种：英文

外文关键词：Aquathermolysis; thiophene; desulfurization; surfactant; mechanism

摘要：This study aimed to apply aquathermolysis technology to remove thiophene sulfur in vacuum residue to obtain qualified petroleum coke products based on a well-designed Fe-Zr-Al catalyst. A coprecipitation method was first developed to synthesize Fe-Zr-Al composite metal oxide catalyst. The thiophene model oil was selected as the reaction system to investigate the process conditions. By adding surfactants into the reaction system to strengthen the mass transfer process of oil-water two-phase, the desulfurization rate of aquathermolysis was improved. It was shown in this study that under the conditions of oil-water ratio of 3:7, temperature of 280 degrees C, pressure of 4 MPa and reaction duration of 60 h, the desulfurization rate could reach 44.39%. The further introduction of 2.4% Sorbitan oleate into the above reaction system could significantly enhance the desulfurization rate to 60.20%. Under the action of Fe2O3 lattice oxygen, thiophene was oxidized and C-S bond was broken, so as to achieve the purpose of desulfurization. The decomposition of water generated active oxygen to continuously replenish lattice oxygen of Fe2O3. The current founding can provide a new way for the effective desulfurization of vacuum residue to produce qualified petroleum coke products.