Role of alkali sodium on the catalytic performance of red mud during coal pyrolysis

doi:10.1016/j.fuproc.2018.12.023

	Role of alkali sodium on the catalytic performance of red mud during coal pyrolysis
	Wang, Deliang 1,2; Wang, Demin 1,2; Yu, Jian 1; Chen, Zhaohui 1; Li, Yunjia 1,2; Gao, Shiqiu 1
刊名	FUEL PROCESSING TECHNOLOGY
	2019-04-01
卷号	186 页码:81-87
关键词	Catalytic pyrolysis Coal Red mud Sodium Tar upgrading
ISSN号	0378-3820
DOI	10.1016/j.fuproc.2018.12.023
英文摘要	Red 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.
资助项目	National Key Research and Development Program of China[2016YFB0600304] ; National Natural Science Foundation of China[21878310]
WOS关键词	HIGH-QUALITY TAR ; LIGNITE ; GASIFICATION ; CRACKING ; VAPORS ; BED ; PRODUCTS ; VOLATILE ; BEHAVIOR ; WASTE
WOS研究方向	Chemistry ; Energy & Fuels ; Engineering
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000458225800009
资助机构	National Key Research and Development Program of China ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/27912]
专题	中国科学院过程工程研究所
通讯作者	Chen, Zhaohui; Gao, Shiqiu
作者单位	1.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
推荐引用方式 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.