文献类型：期刊文献

英文题名：Deep desulfurization of alkylated oil by alumina adsorbents: characteristics and mechanism study

作者：Li, Hui[1];Wang, Bingjie[1];Yang, Hang[1];Lu, Zhaojin[1];Liu, Wenxia[1];Bai, Zhishan[1]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, State Environm Protect Key Lab Environm Risk Asses, Shanghai 200237, Peoples R China

年份：2022

卷号：100

期号：11

起止页码：814

外文期刊名：CANADIAN JOURNAL OF CHEMISTRY

收录：;EI(收录号：20224513061935);WOS:【SCI-EXPANDED(收录号:WOS:000861096800001)】；

基金：Acknowledgements This work was supported by the National Natural Science Foundation of China (22078102 and 22108082) , Shanghai Sail- ing Program (20YF1409800) , and China Postdoctoral Science Foundation (2019TQ0094 and 2020M671032) .

语种：英文

外文关键词：alkylated oil; adsorption; desulphurization; alumina; kinetic study

摘要：Deep desulfurization of alkylated oil is the primary problem that has long plagued the petroleum refining industry. In this study, alkaline alumina adsorbent microspheres were synthesized by carbonization-hot oil column pelletization method. The adsorption desulfurization performance of as-synthesized adsorbent and three commercial alumina-based adsorbents were systematically evaluated and compared. The results showed that alkaline alumina adsorbent had the optimal adsorption performance with a saturated adsorption capacity of 8.604 mg/g. Meanwhile, FTIR and sulfur speciation analysis indicated that the alkaline alumina adsorbent could deeply remove various sulfides (methyl mercaptan, dimethyl disulfide, hexacarbon sulfide, dibenzothiophene, etc.) from alkylated oil. Furthermore, the adsorption kinetics study manifested that the adsorption of sulfide was dominated by chemical adsorption, supplemented by physical adsorption, and accompanied by competitive adsorption among different sulfides. In addition, the regeneration experiment showed that nitrogen (90 ?degrees C) could realize the stable regeneration of the alkaline alumina adsorbent. To ensure stable regeneration performance in the industry, it is recommended that the alkaline alumina adsorbent be regenerated once with nitrogen at 90 ?degrees C. This study will provide theoretical support for the process optimization of deep desulfurization of alkylated oil and contribute to the high-quality production of clean fuels worldwide.