Knowledge Management System Of Guangzhou Institute of Energy Conversion, CAS
| Formation and regulatory mechanisms of N-containing gaseous pollutants during stage-pyrolysis of agricultural biowastes | |
Zhan, Hao1,2,5; Zhuang, Xiuzheng3,5; Song, Yanpei3,5; Chang, Guozhang4; Wang, Zhikang6; Yin, Xiuli3 ; Wang, Xinming1,2,5; Wu, Chuangzhi3,5
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| 2019-11-01 | |
| Source Publication | JOURNAL OF CLEANER PRODUCTION
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| ISSN | 0959-6526 |
| Volume | 236Pages:13 |
| Corresponding Author | Wang, Xinming(wangxm@gig.ac.cn) ; Wu, Chuangzhi(wucz@gzb.ac.cn) |
| Abstract | 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. |
| Keyword | Stage pyrolysis Agricultural biowastes N-Containing gaseous pollutants Formation pathways Secondary reactions Regulatory capacity |
| DOI | 10.1016/j.jclepro.2019.117706 |
| WOS Keyword | N2O PRECURSORS NH3 ; NOX PRECURSORS ; ENERGY-PRODUCTION ; NITROGEN FUNCTIONALITIES ; MICROWAVE PYROLYSIS ; ACTIVATED CARBON ; SEWAGE-SLUDGE ; FUEL-N ; BIOMASS ; COMBUSTION |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 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 Research Area | Science & Technology - Other Topics ; Engineering ; Environmental Sciences & Ecology |
| Funding Organization | 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 Subject | Green & Sustainable Science & Technology ; Engineering, Environmental ; Environmental Sciences |
| WOS ID | WOS:000483414000103 |
| Publisher | ELSEVIER SCI LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.giec.ac.cn/handle/344007/25585 |
| Collection | 中国科学院广州能源研究所 |
| Corresponding Author | Wang, Xinming; Wu, Chuangzhi |
| Affiliation | 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 |
| Recommended Citation 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. |
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