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Characterization of oil shale pyrolysis by solid heat carrier in moving bed with internals
Lai, Dengguo1,2; Zhang, Guangyi1; Xu, Guangwen1,3

Oil shale pyrolysis by solid heat carrier in moving bed with internals (MBI) was investigated with the aim to identify the effect of oil shale properties (moisture content and particle size) and heat carrier types on the physicochemical properties and distributions of pyrolysis products. Pyrolysis of oil shale with high moisture content of 10 wt% caused obvious increase in shale oil yield due to the protective effect of steam atmosphere by its reducing secondary reactions and also catalysis action of shale ash. The obtained highest shale oil yield was close to the yield of Fischer Assay. Pyrolyzing dried oil shale produced shale oil containing more light oils (gasoline and diesel) and allowed higher gas yield. Pyrolysis of large size (i.e. >10 mm) oil shale reduced oil yield but increased light oil content due to the required long time for heat transfer and intra-patticle volatile diffusion. Comparing with ceramic balls, shale ash as the heat carrier presented a favorably catalytic effect on cracking and upgrading of shale oil. With increasing pyrolysis temperature from 465 to 525 degrees C, using shale ash greatly raised light oil content by 10.24% (relatively), considerably reduced the content of heteroatomic compounds, and promoted the conversion of aliphatics to aromatics. Shale ash carrier particles enabled better dust removal than ceramic balls did to attain oil product with a dust content below 0.2 wt%. Generally, oil shale pyrolysis using shale ash heat carrier in MBI process has obvious effects of in-situ shale oil upgrading and in-bed dust removal to allow good pyrolysis performance. (C) 2017 Elsevier B.V. All rights reserved.

KeywordPyrolysis Oil Shale Internals Steam Atmosphere Shale Ash Ceramic Balls
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
Indexed BySCI
WOS KeywordFixed-bed ; Steam ; Filtration ; Gas ; Temperature ; Technology ; Products ; Cracking ; Coking ; Filter
WOS Research AreaChemistry ; Energy & Fuels ; Engineering
WOS SubjectChemistry, Applied ; Energy & Fuels ; Engineering, Chemical
Funding OrganizationNational Basic Research Program of China(2014CB744305)
WOS IDWOS:000394067000020
Citation statistics
Cited Times:11[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.Chem Ind Corp Ltd, Southwest Res & Design Inst, Sichuan 610225, Peoples R China
Recommended Citation
GB/T 7714
Lai, Dengguo,Zhang, Guangyi,Xu, Guangwen. Characterization of oil shale pyrolysis by solid heat carrier in moving bed with internals[J]. FUEL PROCESSING TECHNOLOGY,2017,158:191-198.
APA Lai, Dengguo,Zhang, Guangyi,&Xu, Guangwen.(2017).Characterization of oil shale pyrolysis by solid heat carrier in moving bed with internals.FUEL PROCESSING TECHNOLOGY,158,191-198.
MLA Lai, Dengguo,et al."Characterization of oil shale pyrolysis by solid heat carrier in moving bed with internals".FUEL PROCESSING TECHNOLOGY 158(2017):191-198.
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