The simultaneous removal of SO2 and NO from flue gas over activated coke in a multi-stage fluidized bed at low temperature

doi:10.1016/j.fuel.2020.117862

	The simultaneous removal of SO2 and NO from flue gas over activated coke in a multi-stage fluidized bed at low temperature
	Li, Yunjia 2,3; Zhang, Xiaoling 2,3; Lin Huangfu 2,3; Yu, Fengqin 1,2; Chen, Zhaohui 2; Li, Changming 2; Liu, Zhouen 2; Yu, Jian 2; Gao, Shiqiu 2
刊名	FUEL
	2020-09-01
卷号	275 页码:11
关键词	Multi-stage fluidized bed Activated coke Removal of SO2/NOx Low temperature Structural evolution
ISSN号	0016-2361
DOI	10.1016/j.fuel.2020.117862
英文摘要	A multi-stage fluidized bed (MSFB) process was explored to simultaneously remove the SO2 and NOx from flue gas by use of activated coke (AC) as active medium in low temperature range of 100-200 degrees C. The various technological tests (e.g., temperature, feeding rate, superficial gas velocity, bed numbers) were carried out to make clear the removal features of SO2 and NOx in MSFB system. The MSFB process could not only increase both the removal efficiency and capacity of SO2 over AC, but also eliminate SO2 in the first layer of bed to avoid poisoning the AC by ammonium sulphate in upper beds for denitration. 100% desulfurization efficiency and 73.2% denitration efficiency could be acquired over regenerated AC through the four-stage bed at 180 degrees C in the presence of 10 vol% H2O, which was even much more efficient than moving bed process. Moreover, the fresh AC could be activated after the use/regeneration circulation of AC, and the removal efficiency for both SO2 and NO was significantly elevated over the regenerated AC. The multiple structural characterizations (BET, FT-IR, TPD, XPS) revealed that the microporous structure of regenerated AC was expanded with increased surface area and pore volume to provide more adsorption sites for SO2, and meanwhile abundant surface nitrogen/sulfur/oxygen groups were produced as catalytic sites for denitration, accounting for the significantly promoted removal efficiency over the regenerated AC. The demonstrated advantages of MSFB system signify its promising application prospect for the simultaneous removal of SO2 and NOx in industry.
资助项目	National Key Research and Development Program of China[2017YFB0310403] ; Natural Science Foundation of China[21601192] ; Natural Science Foundation of China[21878310] ; State Key Laboratory of Multi-phase Complex Systems[MPCS-2019-0-03]
WOS关键词	AIR TOXICS ; COMBINED DESULFURIZATION ; REDUCTION ; CARBON ; ADSORPTION ; NH3 ; PERFORMANCE ; CATALYSTS ; DENITRIFICATION ; COMBUSTION
WOS研究方向	Energy & Fuels ; Engineering
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000535710000102
资助机构	National Key Research and Development Program of China ; Natural Science Foundation of China ; State Key Laboratory of Multi-phase Complex Systems
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/41049]
专题	中国科学院过程工程研究所
通讯作者	Li, Changming; Yu, Jian
作者单位	1.Xiangtan Univ, Sch Chem Engn, Xiangtan 411105, Hunan, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Li, Yunjia,Zhang, Xiaoling,Lin Huangfu,et al. The simultaneous removal of SO2 and NO from flue gas over activated coke in a multi-stage fluidized bed at low temperature[J]. FUEL,2020,275:11.
APA	Li, Yunjia.,Zhang, Xiaoling.,Lin Huangfu.,Yu, Fengqin.,Chen, Zhaohui.,...&Gao, Shiqiu.(2020).The simultaneous removal of SO2 and NO from flue gas over activated coke in a multi-stage fluidized bed at low temperature.FUEL,275,11.
MLA	Li, Yunjia,et al."The simultaneous removal of SO2 and NO from flue gas over activated coke in a multi-stage fluidized bed at low temperature".FUEL 275(2020):11.