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Coal Pyrolysis for High-Quality Tar in a Fixed-Bed Pyrolyzer Enhanced with Internals
Alternative TitleEnergy Fuels
Zhang, Chun1,2; Wu, Rongcheng1; Xu, Guangwen1
2014
Source PublicationENERGY & FUELS
ISSN0887-0624
Volume28Issue:1Pages:236-244
AbstractWith utilization of internals to enhance heat transfer and regulate the pyrolysis gas flow direction inside the reactor, this study proposed and tested a new fixed-bed coal pyrolysis reactor indirectly heated. Majorly, both yield and quality of the produced tar were evaluated by comparing the behaviors of laboratory pyrolyzers with and without internals. The results show that the use of the particularly designed internals increased the heating efficiency from the reactor wall to the coal bed by more than 2 times, while the tar yield was obviously higher in the reactor with internals. For Yilan sub-bituminous coal, the tar yield reached about 80% of the tar yield given by the Gray-King analysis (11.8 wt %, dry-coal basis) in the laboratory reactor with internals, while the corresponding light tar below the boiling points of 360 degrees C was about 65 wt % of the total tar mass. With raising the heating temperature of the furnace from 600 to 1000 degrees C, the tar yield increased from 8.5 to 10.64 wt % for the reactor with internals. In contrast, the tar yield, decreased remarkably from 7.98 to 4.77 wt % in the conventional reactor without any internal. All of these show essentially that the adopted internals greatly changed the physiochemical procedure involved in coal pyrolysis, which, in turn, obviously affected the yield and quality of tar.; With utilization of internals to enhance heat transfer and regulate the pyrolysis gas flow direction inside the reactor, this study proposed and tested a new fixed-bed coal pyrolysis reactor indirectly heated. Majorly, both yield and quality of the produced tar were evaluated by comparing the behaviors of laboratory pyrolyzers with and without internals. The results show that the use of the particularly designed internals increased the heating efficiency from the reactor wall to the coal bed by more than 2 times, while the tar yield was obviously higher in the reactor with internals. For Yilan sub-bituminous coal, the tar yield reached about 80% of the tar yield given by the Gray-King analysis (11.8 wt %, dry-coal basis) in the laboratory reactor with internals, while the corresponding light tar below the boiling points of 360 degrees C was about 65 wt % of the total tar mass. With raising the heating temperature of the furnace from 600 to 1000 degrees C, the tar yield increased from 8.5 to 10.64 wt % for the reactor with internals. In contrast, the tar yield, decreased remarkably from 7.98 to 4.77 wt % in the conventional reactor without any internal. All of these show essentially that the adopted internals greatly changed the physiochemical procedure involved in coal pyrolysis, which, in turn, obviously affected the yield and quality of tar.
KeywordSecondary Pyrolysis Vacuum Pyrolysis Particle-size Temperature Atmospheres Conversion Reactor Char
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1021/ef401546n
URL查看原文
Indexed BySCI
Language英语
WOS KeywordSECONDARY PYROLYSIS ; VACUUM PYROLYSIS ; PARTICLE-SIZE ; TEMPERATURE ; ATMOSPHERES ; CONVERSION ; REACTOR ; CHAR
WOS Research AreaEnergy & Fuels ; Engineering
WOS SubjectEnergy & Fuels ; Engineering, Chemical
WOS IDWOS:000330018200026
Citation statistics
Cited Times:30[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/8051
Collection研究所(批量导入)
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
Recommended Citation
GB/T 7714
Zhang, Chun,Wu, Rongcheng,Xu, Guangwen. Coal Pyrolysis for High-Quality Tar in a Fixed-Bed Pyrolyzer Enhanced with Internals[J]. ENERGY & FUELS,2014,28(1):236-244.
APA Zhang, Chun,Wu, Rongcheng,&Xu, Guangwen.(2014).Coal Pyrolysis for High-Quality Tar in a Fixed-Bed Pyrolyzer Enhanced with Internals.ENERGY & FUELS,28(1),236-244.
MLA Zhang, Chun,et al."Coal Pyrolysis for High-Quality Tar in a Fixed-Bed Pyrolyzer Enhanced with Internals".ENERGY & FUELS 28.1(2014):236-244.
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