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Distinctive oil shale pyrolysis behavior in indirectly heated fixed bed with internals
Lin, Lanxin1,2; Lai, Dengguo1,2; Shi, Zhen1,2; Han, Zhennan1,2; Xu, Guangwen1,3
Source PublicationRSC ADVANCES

Intrinsic characteristics of oil shale pyrolysis in a fixed bed reactor with internals have been investigated in this study. Mounting particularly designed internals in fixed bed reactor improved shale oil production to up to 90% yield by Fischer assay. Comparing particle characteristics at different radial positions of the reactors with and without internals demonstrated that, inside the particle bed with internals, the product flow was regulated to move from the high-temperature zone (outer) to low-temperature zone (center), which reduced the secondary reactions of released volatiles. Terminating oil shale pyrolysis at central particle bed temperatures of 150, 300, 450, and 550 degrees C showed that the contents of vacuum gas oil and heavy oil in the shale oil produced had increased from 9.63 wt% to 53.29 wt%. The volatile contents of particles in the inner layer of the reactor slightly increased in the early stage of pyrolysis and, in turn, decomposed to form pyrolysis products as the temperature was raised. The adsorption or condensation of liquids on the surface of particles gradually increased from the outer region to the central region of the reactor due to the regulated product flow direction and low temperatures in the central zone of the reactor causing heavy components to condense. Increasing the degree of pyrolysis was also found to decrease the alkene, aromatic, and cycloalkane contents in shale oil, but increased those of alkane and heteroatomic compounds. These results demonstrate that adopting internals into oil shale pyrolysis optimized the product flow direction and selectively directed secondary reactions to occur for heavy volatile species only.

WOS HeadingsScience & Technology ; Physical Sciences
Indexed BySCI
WOS KeywordThermal-decomposition ; Temperature ; Products ; Generation ; Resources ; Kinetics ; Particle ; Cracking ; Biomass ; Yield
WOS Research AreaChemistry
WOS SubjectChemistry, Multidisciplinary
Funding OrganizationNational Basic Research Program of China(2014CB744303) ; National Natural Science Foundation(91534125) ; Strategic Priority Research Program of Chinese Academy of Sciences(XDA07010100)
WOS IDWOS:000399810800015
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Shenyang Univ Chem Technol, Inst Ind Chem & Energy Technol, Shenyang 110142, Peoples R China
Recommended Citation
GB/T 7714
Lin, Lanxin,Lai, Dengguo,Shi, Zhen,et al. Distinctive oil shale pyrolysis behavior in indirectly heated fixed bed with internals[J]. RSC ADVANCES,2017,7(35):21467-21474.
APA Lin, Lanxin,Lai, Dengguo,Shi, Zhen,Han, Zhennan,&Xu, Guangwen.(2017).Distinctive oil shale pyrolysis behavior in indirectly heated fixed bed with internals.RSC ADVANCES,7(35),21467-21474.
MLA Lin, Lanxin,et al."Distinctive oil shale pyrolysis behavior in indirectly heated fixed bed with internals".RSC ADVANCES 7.35(2017):21467-21474.
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