CAS OpenIR  > 研究所(批量导入)
Simultaneous production of CH4-rich syngas and high-quality tar from lignite by the coupling of noncatalytic/catalytic pyrolysis and gasification in a pressurized integrated fluidized bed
Chen, Zhaohui1,2; Gao, Shiqiu1; Xu, Guangwen1
2017-12-15
Source PublicationAPPLIED ENERGY
ISSN0306-2619
Volume208Issue:00Pages:1527-1537
Abstract

An integrated fluidized bed (IFB) reactor with a two-stage configuration has been developed to process small-size coal particles for the simultaneous production of CH4-rich syngas and high-quality tar, in which coal pyrolysis occurred in an upper transport bed (TB) within an atmosphere mixing steam and syngas generated by steam oxygen gasification of coal or char in a lower fluidized bed (FB). The coupling effect was investigated by combining non-catalytic/catalytic pyrolysis and gasification in a pressurized IFB. Having TB pyrolysis obviously raised CH4 yield (also its content in producer gas) and tar yield. The respective contributions to CH4 formation from the TB pyrolysis and FB gasification were mainly relevant to operating pressure and Ca(OH)(2) catalyst. Raising pressure facilitated CH4 formation. When lignite was treated without catalyst, the contribution from TB pyrolysis was greater than that from FB gasification as hydropyrolysis was intensified by pressure in H-2-rich gas atmosphere from the FB gasifier. Adding catalyst into lignite reversed their contributions. The FB catalytic gasification formed more CH4 because Ca(OH)(2) functioned well as a catalyst for CH4 formation in pressurized gasification. With elevated pressure or/and the addition of Ca(OH)(2), pyrolysis tar yield decreased in different degrees but its quality was improved. With the combination effect of pressure and Ca(OH)(2), producer gas from the tested IFB reactor was highly rich in CH4 to reach 10.8 vol%, with as well a high H-2/CO ratio of 2.3 that is suitable for making SNG. The obtained tar had its light tar content as high as 95 wt%.

KeywordCoal Pyrolysis Catalytic Gasification Integrated Fluidized Bed Coupling Ch4-rich Syngas
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.apenergy.2017.08.227
Indexed BySCI
Language英语
WOS KeywordVolatile-char Interactions ; Alkaline-earth Metals ; Victorian Brown-coal ; Lurgi Fbdb Gasifier ; In-situ Destruction ; Low-rank Coal ; Steam Gasification ; Exergy Analysis ; Reaction Zones ; Particle-size
WOS Research AreaEnergy & Fuels ; Engineering
WOS SubjectEnergy & Fuels ; Engineering, Chemical
Funding OrganizationNational Key Research and Development Program of China(2016YFB0600304)
WOS IDWOS:000416300400114
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/23483
Collection研究所(批量导入)
Corresponding AuthorGao, Shiqiu; Xu, Guangwen
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Tsinghua Univ, Dept Chem Engn, Beijing 100084, Peoples R China
Recommended Citation
GB/T 7714
Chen, Zhaohui,Gao, Shiqiu,Xu, Guangwen. Simultaneous production of CH4-rich syngas and high-quality tar from lignite by the coupling of noncatalytic/catalytic pyrolysis and gasification in a pressurized integrated fluidized bed[J]. APPLIED ENERGY,2017,208(00):1527-1537.
APA Chen, Zhaohui,Gao, Shiqiu,&Xu, Guangwen.(2017).Simultaneous production of CH4-rich syngas and high-quality tar from lignite by the coupling of noncatalytic/catalytic pyrolysis and gasification in a pressurized integrated fluidized bed.APPLIED ENERGY,208(00),1527-1537.
MLA Chen, Zhaohui,et al."Simultaneous production of CH4-rich syngas and high-quality tar from lignite by the coupling of noncatalytic/catalytic pyrolysis and gasification in a pressurized integrated fluidized bed".APPLIED ENERGY 208.00(2017):1527-1537.
Files in This Item:
File Name/Size DocType Version Access License
Simultaneous product(733KB)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
[Gao, Shiqiu]'s Articles
[Xu, Guangwen]'s Articles
Baidu academic
Similar articles in Baidu academic
[Chen, Zhaohui]'s Articles
[Gao, Shiqiu]'s Articles
[Xu, Guangwen]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Chen, Zhaohui]'s Articles
[Gao, Shiqiu]'s Articles
[Xu, Guangwen]'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.