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Li H, Wang B, Yang H, Lu Z, Liu W, Bai Z. Deep desulfurization of alkylated oil by alumina adsorbents: characteristics and mechanism study. CAN J CHEM 2022. [DOI: 10.1139/cjc-2022-0114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
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<sup>-1</sup>. Meanwhile, FTIR and sulfur speciation analysis indicated that the alkaline alumina adsorbent could deeply remove various sulfides (methyl mercaptan, dimethyl disulfide, hexacarbon sulfide, dibenzothiophene, <i>etc.</i>) 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 °C) could realize the stable regeneration of the alkaline alumina adsorbent. To ensure stable regeneration performance in industry, it is recommended that the alkaline alumina adsorbent be regenerated once with nitrogen at 90 °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.
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Affiliation(s)
- Hui Li
- East China University of Science and Technology School of Mechanical Engineering and Power Engineering, 539687, Shanghai, China
| | - Bingjie Wang
- East China University of Science and Technology School of Mechanical Engineering and Power Engineering, 539687, Shanghai, China
| | - Hang Yang
- East China University of Science and Technology School of Mechanical Engineering and Power Engineering, 539687, Shanghai, China
| | - Zhaojin Lu
- East China University of Science and Technology School of Mechanical Engineering and Power Engineering, 539687, Shanghai, China
| | - Wenxia Liu
- East China University of Science and Technology School of Mechanical Engineering and Power Engineering, 539687, Shanghai, China
| | - Zhishan Bai
- East China University of Science and Technology School of Mechanical Engineering and Power Engineering, 539687, Shanghai, China
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Weng CH. Water environment and recent advances in pollution control technologies. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:12462-12464. [PMID: 34783949 PMCID: PMC8592827 DOI: 10.1007/s11356-021-17392-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Affiliation(s)
- Chih-Huang Weng
- Department of Civil Engineering, I-Shou University, Kaohsiung, Taiwan.
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