A study on the chemical looping combustion of sewage sludge: The emission of NOx and its precursors

doi:10.1016/j.fuproc.2022.107260

GIEC OpenIR

	A study on the chemical looping combustion of sewage sludge: The emission of NOx and its precursors
	Lin, Yan 1; Mo, Yuanrui 5; Fang, Shiwen 3; Huang, Zhen 1; Wei, Guoqiang 4; Zhao, Zengli1 ; Huang, Hongyu 1,2
	2022-06-15
发表期刊	FUEL PROCESSING TECHNOLOGY
ISSN	0378-3820
卷号	231 页码:8
通讯作者	Huang, Zhen(huangzhen@ms.giec.ac.cn)
摘要	Chemical looping combustion (CLC) is a promising low-NOx combustion technology for sewage sludge disposal. Herein, the emissions of NOx and its precursors (NH3 and HCN) during the pyrolysis and CLC processes are investigated on a fixed bed reactor. In particular, the effects of reaction (gas) temperature, sludge ash accumulation, and reaction intermediates (CO2 and H2O) are studied. When temperature increased from 800 to 900 degrees C, the content of gas-phase carbon is shown to increase from 57.9 to 79.7%. With ash accumulation, the NH3 generation rate increases from 10.8 to 11.7%, and the HCN generation rate decreases from 9.68 to 8.25%. Sludge ash accumulation is shown to promote the release of NH3, but inhibit the release of HCN and NOx. After 8 consecutive CLC cycles, the average removal efficiencies of NH3, HCN, and total N-containing pollutants are similar to 61%, >= 92%, and similar to 60%, respectively. The presence of CO2 and H2O in the reaction atmosphere is shown to enhance the oxidizability, thereby promoting the formation of NOx. In addition, char gasification and the reforming reaction of N-containing pollutants are promoted, thus leading to the formation of NOx precursors. Furthermore, NO is shown to be the predominant form of NOx in the CLC of sewage sludge.
关键词	Chemical looping combustion Sewage sludge NOx HCN NH3
DOI	10.1016/j.fuproc.2022.107260
关键词[WOS]	MUNICIPAL SOLID-WASTE ; PAPER-MILL SLUDGE ; CO-PYROLYSIS ; FUEL-N ; COCOMBUSTION ; NITROGEN ; BIOMASS ; RELEASE ; COALS ; CLC
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[52006224] ; Key Special Project for Introduced Talents Team of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou)[GML2019ZD0108] ; Youth Innovation Promotion Association, CAS[2018384] ; Foundation and Applied Foundation Research of Guangdong Province[2019A1515110828] ; Foundation and Applied Foundation Research of Guangdong Province[2020A1515110138] ; CAS Key Laboratory of Renewable Energy[2020000022]
WOS研究方向	Chemistry ; Energy & Fuels ; Engineering
项目资助者	National Natural Science Foundation of China ; Key Special Project for Introduced Talents Team of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou) ; Youth Innovation Promotion Association, CAS ; Foundation and Applied Foundation Research of Guangdong Province ; CAS Key Laboratory of Renewable Energy
WOS类目	Chemistry, Applied ; Energy & Fuels ; Engineering, Chemical
WOS记录号	WOS:000791230600006
出版者	ELSEVIER
引用统计	被引频次：11[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.giec.ac.cn/handle/344007/36556
专题	中国科学院广州能源研究所
通讯作者	Huang, Zhen
作者单位	1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China 2.Southern Marine Sci & Engn Guangdong Lab Guangzhou, Guangzhou 511458, Peoples R China 3.Zhongkai Univ Agr & Engn, Guangzhou 510225, Peoples R China 4.South China Agr Univ, Guangzhou 510642, Peoples R China 5.South China Univ Technol, Guangzhou 510641, Peoples R China
第一作者单位	中国科学院广州能源研究所
推荐引用方式 GB/T 7714	Lin, Yan,Mo, Yuanrui,Fang, Shiwen,et al. A study on the chemical looping combustion of sewage sludge: The emission of NOx and its precursors[J]. FUEL PROCESSING TECHNOLOGY,2022,231:8.
APA	Lin, Yan.,Mo, Yuanrui.,Fang, Shiwen.,Huang, Zhen.,Wei, Guoqiang.,...&Huang, Hongyu.(2022).A study on the chemical looping combustion of sewage sludge: The emission of NOx and its precursors.FUEL PROCESSING TECHNOLOGY,231,8.
MLA	Lin, Yan,et al."A study on the chemical looping combustion of sewage sludge: The emission of NOx and its precursors".FUEL PROCESSING TECHNOLOGY 231(2022):8.