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Role of alkali sodium on the catalytic performance of red mud during coal pyrolysis
Wang, Deliang1,2; Wang, Demin1,2; Yu, Jian1; Chen, Zhaohui1; Li, Yunjia1,2; Gao, Shiqiu1
2019-04-01
Source PublicationFUEL PROCESSING TECHNOLOGY
ISSN0378-3820
Volume186Pages:81-87
AbstractRed mud (RM) as large quantity of industrial wastes could serve as a low-cost catalyst for catalytic upgrading of coal pyrolysis volatiles. However, the catalytic performance of raw RM for improving the quality of tar was limited because of its composition and structure. In this paper, the RM-based catalyst (RMC) for coal pyrolysis was prepared by using acid-alkali treatment. It was found that changing sodium content could modify the characteristics of RMC. The BET and NH3-TPD showed that the surface area and acid strength of RMC increased evidently with the reduction of sodium content. The pyrolysis characteristics of samples by mix shaping of coal and RMC with different sodium contents were evaluated in a fixed-bed reactor. The addition of RMC into coal could upgrade tar quality, thus increasing the yield of light tar (boiling point < 360 degrees C) and decreasing the yield of heavy tar. The content of sodium in the RMC had a great influence on product distribution of coal catalytic pyrolysis. The low-content sodium with high concentration acids contributed to the formation of coke. Whereas, with the increase of sodium content in RMC, coking was suppressed but more gaseous products were produced. After adding 4 wt% RMC with sodium content of 3.2 wt% into coal, the yield of light tar increased to 7.7 wt% and the light fraction in tar was as high as 74%, much higher than those from coal pyrolysis without catalyst.
KeywordCatalytic pyrolysis Coal Red mud Sodium Tar upgrading
DOI10.1016/j.fuproc.2018.12.023
Language英语
WOS KeywordHIGH-QUALITY TAR ; LIGNITE ; GASIFICATION ; CRACKING ; VAPORS ; BED ; PRODUCTS ; VOLATILE ; BEHAVIOR ; WASTE
Funding ProjectNational Key Research and Development Program of China[2016YFB0600304] ; National Natural Science Foundation of China[21878310]
WOS Research AreaChemistry ; Energy & Fuels ; Engineering
WOS SubjectChemistry, Applied ; Energy & Fuels ; Engineering, Chemical
Funding OrganizationNational Key Research and Development Program of China ; National Natural Science Foundation of China
WOS IDWOS:000458225800009
PublisherELSEVIER SCIENCE BV
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/27913
Collection中国科学院过程工程研究所
Corresponding AuthorChen, Zhaohui; Gao, 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
Wang, Deliang,Wang, Demin,Yu, Jian,et al. Role of alkali sodium on the catalytic performance of red mud during coal pyrolysis[J]. FUEL PROCESSING TECHNOLOGY,2019,186:81-87.
APA Wang, Deliang,Wang, Demin,Yu, Jian,Chen, Zhaohui,Li, Yunjia,&Gao, Shiqiu.(2019).Role of alkali sodium on the catalytic performance of red mud during coal pyrolysis.FUEL PROCESSING TECHNOLOGY,186,81-87.
MLA Wang, Deliang,et al."Role of alkali sodium on the catalytic performance of red mud during coal pyrolysis".FUEL PROCESSING TECHNOLOGY 186(2019):81-87.
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