CAS OpenIR
A tandem pyrolysis-upgrading strategy in an integrated reactor to improve the quality of coal tar
Chen, Zhaohui1; Wang, Demin1,2; Li, Changming1; Yang, Hang1,2; Wang, Deliang1,2; Lai, Dengguo1; Yu, Jian1; Gao, Shiqiu1
2020-09-15
Source PublicationENERGY CONVERSION AND MANAGEMENT
ISSN0196-8904
Volume220Pages:9
Abstract

Coal pyrolysis and volatiles upgrading were intelligently coupled into an integrated reactor with two sections that enabled tar quality to be improved. The upper drop tube served as the rapid pyrolysis section to maximize the primary yield of tar. Subsequently, the pyrolysis char together with the released volatiles was introduced into the lower moving bed section, wherein the formed char bed was endowed with a catalytic upgrading function by enhancing volatiles-char interactions. This design succeeded in the consecutive pyrolysis-upgrading process by recombining its pyrolysis products. In the first-step rapid pyrolysis, a much higher yield of tar than the Gray-King assay yield was obtained at 600 degrees C, but the light fraction (boil pointing < 360 degrees C) in tar was as low as 43.0%, which was identified as poor quality. After the second-step catalytic upgrading at 600 degrees C, the resultant tar continued to maintain a relatively higher yield, which was 91.2% of that determined by Gay-King assay, despite being cracked over char. Accordingly, the light fraction in tar reached 57.0%, i.e., a 32.6% increase compared with the drop tube pyrolysis, which enabled a higher yield of light tar. This finding could be attributed to the shift of heavy tar into light tar and gas at the expense of the forming coke over char bed. The experimental results demonstrated that the proposed tandem rapid pyrolysis-volatile upgrading strategy had its unique superiorities in terms of guaranteeing both the quantity and quality of coal pyrolysis tar compared with other pyrolysis processes.

KeywordCoal Pyrolysis Catalytic Upgrading High-quality Tar Drop Tube Moving Bed Integrated Reactor
DOI10.1016/j.enconman.2020.113065
Language英语
WOS KeywordSolid Heat Carrier ; Multistage Fluidized-bed ; Fixed-bed ; Char Gasification ; Syngas Production ; Moving-bed ; Oil-shale ; Lignite ; Temperature ; Volatiles
Funding ProjectNational Key Research and Development Program of China[2016YFB0600304] ; National Natural Science Foundation of China[21878310]
WOS Research AreaThermodynamics ; Energy & Fuels ; Mechanics
WOS SubjectThermodynamics ; Energy & Fuels ; Mechanics
Funding OrganizationNational Key Research and Development Program of China ; National Natural Science Foundation of China
WOS IDWOS:000563960500013
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/41723
Collection中国科学院过程工程研究所
Corresponding AuthorGao, Shiqiu
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Chen, Zhaohui,Wang, Demin,Li, Changming,et al. A tandem pyrolysis-upgrading strategy in an integrated reactor to improve the quality of coal tar[J]. ENERGY CONVERSION AND MANAGEMENT,2020,220:9.
APA Chen, Zhaohui.,Wang, Demin.,Li, Changming.,Yang, Hang.,Wang, Deliang.,...&Gao, Shiqiu.(2020).A tandem pyrolysis-upgrading strategy in an integrated reactor to improve the quality of coal tar.ENERGY CONVERSION AND MANAGEMENT,220,9.
MLA Chen, Zhaohui,et al."A tandem pyrolysis-upgrading strategy in an integrated reactor to improve the quality of coal tar".ENERGY CONVERSION AND MANAGEMENT 220(2020):9.
Files in This Item:
File Name/Size DocType Version Access License
A tandem pyrolysis-u(1231KB)期刊论文出版稿限制开放CC BY-NC-SAApplication Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Chen, Zhaohui]'s Articles
[Wang, Demin]'s Articles
[Li, Changming]'s Articles
Baidu academic
Similar articles in Baidu academic
[Chen, Zhaohui]'s Articles
[Wang, Demin]'s Articles
[Li, Changming]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Chen, Zhaohui]'s Articles
[Wang, Demin]'s Articles
[Li, Changming]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.