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-  2018 


DOI: 10.13543/j.bhxbzr.2018.05.002

Keywords: ,油页岩,生物质,热解,自由基,缩聚反应,
,oil shale,biomass,pyrolysis,radicals,condensation

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Abstract:Pyrolysis occurs in both the thermal and catalytic conversion of heavy organic resources-such as coal, oil shale, heavy oil, biomass and waste organics-for fuel and chemical production. Pyrolysis generally involves two types of reactions, bond cleavage of a feed to generate free radical fragments and reaction of the radical fragments to yield products. The mechanisms involved, however, have not been addressed in most publications in the field and the previous studies have mainly focused on the yield and quality of products. Since 2007, researchers in the State Key Laboratory of Chemical Resource Engineering (SKLCRE) in Beijing University of Chemical Technology (BUCT) has studied the radical behaviors in, and mechanism of, the pyrolysis of many heavy organic resources, and have advanced our fundamental understanding of this area, key results include the experimental quantification of feed-structure dependent radical generation and the reactions of free radical fragments, establishment of the relationships between the active radicals and stable radicals (measurable by electron spin resonance, ESR), as well as the relationships between ESR radicals and coking in the reaction of volatiles both in the gas phase and on the catalyst surface, and numerical simulation of pyrolysis based on the radical mechanism. This article summarizes the major advancements reported in recent years by researchers in SKLCRE-BUCT and outlines the important topics for future study.


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