Reducing emission of NOx and SOx precursors while enhancing char production from pyrolysis of sewage sludge by torrefaction pretreatment

doi:10.1016/j.energy.2019.116620

	Reducing emission of NOx and SOx precursors while enhancing char production from pyrolysis of sewage sludge by torrefaction pretreatment
	Zheng, Anqing 1,2,3; Li, Luwei 1,2,3; Tippayawong, Nakorn 4; Huang, Zhen 1,2,3; Zhao, Kun 1,2,3; Wei, Guoqiang 1,2,3; Zhao, Zengli 1,2,3; Li, Haibin 1,2,3
刊名	ENERGY
	2020-02-01
卷号	192 页码:10
关键词	Torrefaction Sewage sludge Pyrolysis behaviors NOx and SOx precursors Char
ISSN号	0360-5442
DOI	10.1016/j.energy.2019.116620
通讯作者	Zhao, Kun(zhaokun@ms.giec.ac.cn) ; Wei, Guoqiang(weigq@ms.giec.ac.cn)
英文摘要	This study aims to explore the possibility of reducing emission of NOx and SOx precursors while enhancing char production from pyrolysis of sewage sludge by torrefaction pretreatment. The influence of torrefaction severity on structural alterations of sewage sludge and resulting pyrolysis behaviors was systematically studied. The experimental results show that 33.3% of N and 52.8% of S in sewage sludge can be removed by torrefaction pretreatment, leading to the evident reduction in the emission of NOx and SOx precursors (e.g. NH3, HCNO, H2S, COS and CS2) during subsequent pyrolysis of torrefied sewage sludge. Moreover, the yield and specific surface area of char from pyrolysis of sewage sludge can be improved by torrefaction. The char obtained from pyrolysis of sewage sludge torrefied at 300 degrees C exhibited the highest yield of 61.0 wt% and the maximum BET surface areas of 26.5 m(2)/g. These results could be ascribed to the devolatilization, polycondensation and charring of sewage sludge during torrefaction to form torrefied sewage sludge with stable aromatic and heterocyclic structure. These findings suggest that torrefaction is an effective pretreatment method prior to pyrolysis of sewage sludge for reducing emission of NOx and SOx precursors while enhancing yield and specific surface area of char. (C) 2019 Elsevier Ltd. All rights reserved.
资助项目	Major International (Regional) Joint Research Project of the National Natural Science Foundation of China[51661145011] ; National Natural Science Foundation of China[51776209] ; National Natural Science Foundation of China[51876208] ; National Natural Science Foundation of China[51606204] ; National Key R&D Program of China[2017YFE0124200] ; Science and Technology Planning Project of Guangdong Province, China[2014B020216004] ; Science and Technology Planning Project of Guangdong Province, China[2015A020215024] ; Youth Innovation Promotion Association, CAS[2018383] ; Pearl River S&T Nova Program of Guangzhou[201806010061]
WOS关键词	TG-FTIR ; BIOMASS TORREFACTION ; CO-PYROLYSIS ; TG/DTA-MS ; KINETICS ; STATE ; HEMICELLULOSE ; TEMPERATURE ; MECHANISM ; BEHAVIOR
WOS研究方向	Thermodynamics ; Energy & Fuels
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000515212800054
资助机构	Major International (Regional) Joint Research Project of the National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; Science and Technology Planning Project of Guangdong Province, China ; Youth Innovation Promotion Association, CAS ; Pearl River S&T Nova Program of Guangzhou
内容类型	期刊论文
源URL	[http://ir.giec.ac.cn/handle/344007/26612]
专题	中国科学院广州能源研究所
通讯作者	Zhao, Kun; Wei, Guoqiang
作者单位	1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China 2.CAS Key Lab Renewable Energy, Guangzhou 510640, Peoples R China 3.Guangdong Prov Key Lab New Renewable Energy Res &, Guangzhou 510640, Peoples R China 4.Chiang Mai Univ, Dept Mech Engn, Chiang Mai 50200, Thailand
推荐引用方式 GB/T 7714	Zheng, Anqing,Li, Luwei,Tippayawong, Nakorn,et al. Reducing emission of NOx and SOx precursors while enhancing char production from pyrolysis of sewage sludge by torrefaction pretreatment[J]. ENERGY,2020,192:10.
APA	Zheng, Anqing.,Li, Luwei.,Tippayawong, Nakorn.,Huang, Zhen.,Zhao, Kun.,...&Li, Haibin.(2020).Reducing emission of NOx and SOx precursors while enhancing char production from pyrolysis of sewage sludge by torrefaction pretreatment.ENERGY,192,10.
MLA	Zheng, Anqing,et al."Reducing emission of NOx and SOx precursors while enhancing char production from pyrolysis of sewage sludge by torrefaction pretreatment".ENERGY 192(2020):10.