Formation and regulatory mechanisms of N-containing gaseous pollutants during stage-pyrolysis of agricultural biowastes

doi:10.1016/j.jclepro.2019.117706

GIEC OpenIR

	Formation and regulatory mechanisms of N-containing gaseous pollutants during stage-pyrolysis of agricultural biowastes
	Zhan, Hao 1,2,5; Zhuang, Xiuzheng 3,5; Song, Yanpei 3,5; Chang, Guozhang 4; Wang, Zhikang 6; Yin, Xiuli3 ; Wang, Xinming 1,2,5; Wu, Chuangzhi3,5
	2019-11-01
发表期刊	JOURNAL OF CLEANER PRODUCTION
ISSN	0959-6526
卷号	236 页码:13
通讯作者	Wang, Xinming(wangxm@gig.ac.cn) ; Wu, Chuangzhi(wucz@gzb.ac.cn)
摘要	Process control of fuel-bound nitrogen conversion into N-containing gaseous pollutants was essential for thermal utilization of agricultural biowastes. In this study, decisive formation pathways and regulatory mechanisms of two N-containing gaseous pollutants (NH3 and HCN) were probed via stage pyrolysis of three typical ones involving bean straw, rice straw and wheat straw. Formation characteristics of N-containing gaseous pollutants for single-stage and two-stage pyrolysis were quantitatively compared. Results indicated that consistent formation pathways of N-containing gaseous pollutants were elucidated by direct and indirect conversion of similar types of fuel-bound nitrogen - amide-N/amine-N/amino-N in agricultural biowastes. Specifically, two N-containing gaseous pollutants were hardly associated with primary pyrolysis of amide-N/amine-N/amino-N types (direct conversion) while dominantly determined by secondary reactions of subsequent nitrogen intermediates in chars and tars (indirect conversion); secondary reactions referring to hydrogenation of heterocyclic-N in chars and dehydrogenation of amine-N in tars were more responsible for NH3-N and HCN-N, respectively, leading to a maximal total yield of 45-50 wt.%. Consequently, compared to single-stage pyrolysis under same conditions, two-stage pyrolysis could manipulate intensities of formation pathways at different pyrolysis stages through employing differential intermediate feedstocks for re-pyrolysis, minimizing the ratio of total yield by 57-60% with a greater effect on HCN-N yield (76-83%) than NH3-N yield (45-50%), which exhibited an excellent regulatory capacity on the formation of N-containing gaseous pollutants for agricultural biowastes. These findings were favorable for developing some insights into emission control of N-containing gaseous pollutants (intermediate and final) during their thermal utilization. (C) 2019 Elsevier Ltd. All rights reserved.
关键词	Stage pyrolysis Agricultural biowastes N-Containing gaseous pollutants Formation pathways Secondary reactions Regulatory capacity
DOI	10.1016/j.jclepro.2019.117706
关键词[WOS]	N2O PRECURSORS NH3 ; NOX PRECURSORS ; ENERGY-PRODUCTION ; NITROGEN FUNCTIONALITIES ; MICROWAVE PYROLYSIS ; ACTIVATED CARBON ; SEWAGE-SLUDGE ; FUEL-N ; BIOMASS ; COMBUSTION
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program[2016YFC0202204] ; National Natural Science Foundation of China[41530641] ; Postdoctoral Science Foundation of China[2018M643221] ; Science and Technology Department Foundation of Guizhou Province[20161071]
WOS研究方向	Science & Technology - Other Topics ; Engineering ; Environmental Sciences & Ecology
项目资助者	National Key Research and Development Program ; National Natural Science Foundation of China ; Postdoctoral Science Foundation of China ; Science and Technology Department Foundation of Guizhou Province
WOS类目	Green & Sustainable Science & Technology ; Engineering, Environmental ; Environmental Sciences
WOS记录号	WOS:000483414000103
出版者	ELSEVIER SCI LTD
引用统计	被引频次：32[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/344007/25585
专题	中国科学院广州能源研究所
通讯作者	Wang, Xinming; Wu, Chuangzhi
作者单位	1.Chinese Acad Sci, State Key Lab Organ Geochem, Guangzhou Inst Geochem, Guangzhou 510640, Guangdong, Peoples R China 2.Chinese Acad Sci, Guangdong Key Lab Environm Protect & Resources Ut, Guangzhou Inst Geochem, Guangzhou 510640, Guangdong, Peoples R China 3.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China 4.Qingdao Univ Sci & Technol, State Key Lab Base Ecochem Engn, Coll Chem Engn, Qingdao 266042, Shandong, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 6.Guizhou Minzu Univ, Coll Ecoenvironm Engn, Guiyang 550025, Guizhou, Peoples R China
推荐引用方式 GB/T 7714	Zhan, Hao,Zhuang, Xiuzheng,Song, Yanpei,et al. Formation and regulatory mechanisms of N-containing gaseous pollutants during stage-pyrolysis of agricultural biowastes[J]. JOURNAL OF CLEANER PRODUCTION,2019,236:13.
APA	Zhan, Hao.,Zhuang, Xiuzheng.,Song, Yanpei.,Chang, Guozhang.,Wang, Zhikang.,...&Wu, Chuangzhi.(2019).Formation and regulatory mechanisms of N-containing gaseous pollutants during stage-pyrolysis of agricultural biowastes.JOURNAL OF CLEANER PRODUCTION,236,13.
MLA	Zhan, Hao,et al."Formation and regulatory mechanisms of N-containing gaseous pollutants during stage-pyrolysis of agricultural biowastes".JOURNAL OF CLEANER PRODUCTION 236(2019):13.