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High quality syngas production from catalytic coal gasification using disposable Ca(OH)(2) catalyst
Chen, Zhaohui1; Dun, Qimeng2; Shi, Yong1; Lai, Dengguo1; Zhou, Yang1; Gao, Shiqiu1; Xu, Guangwen1
2017-05-15
发表期刊CHEMICAL ENGINEERING JOURNAL
ISSN1385-8947
卷号316页码:842-849
摘要This study works on the production of high H-2/CO mole ratio and CH4-rich syngas suitable for methane synthesis from catalytic coal gasification using inexpensive and disposable Ca(OH)(2) in a fluidized bed with a continuous coal feeding rate of 1.2 kg/h. Experiments conducted at atmospheric pressure demonstrated that carbon conversion and gas yield increased markedly after loading Ca(OH)(2) into lignite, while CH4 yield was almost constant. Increasing excess oxygen ratio (ER), steam to carbon mole ratio (S/C) and catalytic gasification temperature could increase carbon conversion but went against CH4 production. At atmosphere pressure, CH4 was mainly derived from coal pyrolysis and raising carbon conversion thus led to the reduction of CH4 content in syngas. Elevating gasification pressure exhibited a significant effect in raising carbon conversion and encouraging CH4 formation. Increasing S/C and pressure as well as reducing ER and gasification temperature were beneficial to raise H-2/CO mole ratio in syngas. At 1.5 MPa, under conditions of ER = 0.050, S/C = 1.00 and gasification temperature of 800 degrees C, catalytic coal gasification achieved good results with carbon conversion of about 70.0% and CH4 yield of 0.142 N m(3)/kg-coal. And its producer gas, with the best H-2/CO mole ratio of about 3.0, was highly rich in CH4 with its content of 10.1 vol.% well matched in terms of SNG production. (C) 2017 Elsevier B.V. All rights reserved.
关键词Catalytic Gasification Coal High Quality Syngas Disposable Catalyst Ca(Oh)(2) Ch4
文章类型Article
WOS标题词Science & Technology ; Technology
DOI10.1016/j.cej.2017.02.025
收录类别SCI
语种英语
关键词[WOS]INTEGRATED FLUIDIZED-BED ; LOW-RANK COAL ; STEAM GASIFICATION ; CALCIUM HYDROXIDE ; MINERAL MATTER ; BROWN-COAL ; PYROLYSIS ; METHANE ; CHAR ; POTASSIUM
WOS研究方向Engineering
WOS类目Engineering, Environmental ; Engineering, Chemical
项目资助者National Natural Science Foundation of China(21376250 ; U1302273)
WOS记录号WOS:000398985200088
引用统计
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/22455
专题多相复杂系统国家重点实验室
作者单位1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Hebei Univ Technol, Sch Chem Engn, Tianjin 300130, Peoples R China
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GB/T 7714
Chen, Zhaohui,Dun, Qimeng,Shi, Yong,et al. High quality syngas production from catalytic coal gasification using disposable Ca(OH)(2) catalyst[J]. CHEMICAL ENGINEERING JOURNAL,2017,316:842-849.
APA Chen, Zhaohui.,Dun, Qimeng.,Shi, Yong.,Lai, Dengguo.,Zhou, Yang.,...&Xu, Guangwen.(2017).High quality syngas production from catalytic coal gasification using disposable Ca(OH)(2) catalyst.CHEMICAL ENGINEERING JOURNAL,316,842-849.
MLA Chen, Zhaohui,et al."High quality syngas production from catalytic coal gasification using disposable Ca(OH)(2) catalyst".CHEMICAL ENGINEERING JOURNAL 316(2017):842-849.
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