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Exploration on the action mechanism of microwave with peroxyacetic acid in the process of coal desulfurization
Tang, LF; Chen, SJ; Wang, SW; Tao, XX; He, H; Feng, L; Zheng, L; Ma, CY; Zhao, YD; Zheng L(郑雷); Ma CY(马陈燕); Zhao YD(赵屹东)
2018
Source PublicationFUEL
ISSN0016-2361
EISSN1873-7153
Volume214Pages:554-560
SubtypeArticle
AbstractTo clarify the action mechanisms of microwave field with peroxyacetic acid in the process of sulfur removal from coal, this study was carried out on the molecular level and diphenyl sulfide was selected as the sulfur model compound of coal. Its oxidation reaction path was determined utilizing XANES and GC/MS. The transmission reflection method was adopted to analyze the dielectric property of the substances detected before. Their CeS bond dissociation energies (BDEs), bond dissociation times (BDTs) and the intrinsic reaction coordinate of de-sulfurization reactions were calculated under various extra electric fields to support the experimental results. Results showed that most of diphenyl sulfide was oxidized to the corresponding sulfoxide and sulfone, resulting in a desulfurization degree of 22.37% after microwaving treatment at 500W for 120 s combined with peroxyacetic acid. With the oxidation degree deepening, the absorption efficiency of microwave energy for sulfur groups increased and their CeS BDEs decreased, resulting in the reducing of their CeS BDTs. In addition, the CeS BDTs and the barrier of desulfurization reactions were reduced under the extra electric field. These findings confirmed that the sulfur-containing bonds cleavage and desulfurization reactions of sulfur groups were promoted under the extra microwave field with peroxyacetic acid, which is conducive to the effective removal of sulfur groups from coal.
KeywordDesulfurization Microwave High-sulfur coal Sulfur-containing model compounds
DOI10.1016/j.fuel.2017.10.087
WOS KeywordHIGH-SULFUR COAL ; BOND-DISSOCIATION ENTHALPIES ; ELECTRON-TRANSFER PROCESS ; ORGANIC SULFUR ; MODEL COMPOUNDS ; AB-INITIO ; CHEMICAL DESULFURIZATION ; DIELECTRIC-PROPERTIES ; PYROLYSIS ; OXIDATION
Indexed BySCI ; EI
Language英语
WOS Research AreaEnergy & Fuels ; Engineering
WOS SubjectEnergy & Fuels ; Engineering, Chemical
WOS IDWOS:000417103800059
EI Accession Number20174804458323
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/285501
Collection多学科研究中心
实验物理中心
Affiliation中国科学院高能物理研究所
First Author AffilicationInstitute of High Energy
Recommended Citation
GB/T 7714
Tang, LF,Chen, SJ,Wang, SW,et al. Exploration on the action mechanism of microwave with peroxyacetic acid in the process of coal desulfurization[J]. FUEL,2018,214:554-560.
APA Tang, LF.,Chen, SJ.,Wang, SW.,Tao, XX.,He, H.,...&赵屹东.(2018).Exploration on the action mechanism of microwave with peroxyacetic acid in the process of coal desulfurization.FUEL,214,554-560.
MLA Tang, LF,et al."Exploration on the action mechanism of microwave with peroxyacetic acid in the process of coal desulfurization".FUEL 214(2018):554-560.
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