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Structural and quantitative evolution of organic matters in oil shale during two different retorting processes
Author(s) -
Wang Dan,
Liu Yunyi,
Zhang Tao,
Christopher Daniel Happy,
Bature Nafiu Sadi,
Fan Tianbo,
Guo Hongfan
Publication year - 2021
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.17278
Subject(s) - retort , oil shale , chemistry , carbon fibers , endothermic process , shale oil , environmental chemistry , chemical engineering , fossil fuel , organic chemistry , waste management , materials science , adsorption , composite number , engineering , composite material
In this study, traditional strongly endothermic anaerobic retorting (AR) and relatively novel self‐heating retorting (SHR) processes for oil shale (OS) were investigated and compared in detail. These studies mainly involve the structural and quantitative evolution of organic matters in OS during retorting, including varieties of crystallite parameters, carbon framework structure, amounts of various structural carbons and toxic polycyclic aromatic hydrocarbons, and so on. The obtained results well elucidate some reaction pathways in AR and SHR as well as certain differences between the two retorting processes. Moreover, based on our former work that verifies SHR greatly simplifies retorting operation by in situ generating heat to replace external heat carrier/provision, this study further demonstrates that SHR also alleviates the environmental effect of organic toxic residues as compared to AR. The present study provides some critical results not only for penetrating the reaction mechanism but also for assessing or controlling the environmental impact of both retorting processes.