Fluidized bed combustion in steam-rich atmospheres for high-nitrogen fuel: Nitrogen distribution in char and volatile and their contributions to NOx | |
Zhang, Guangyi1; Zhu, Chuanqiang1,2; Ge, Yaxin1,2; Liu, Xiaoxing1; Xu, Guangwen1 | |
2016-12-15 | |
Source Publication | FUEL
![]() |
ISSN | 0016-2361 |
Volume | 186Issue:DECPages:204-214 |
Abstract | This article is devoted to investigating the contributions of char-N and volatile-N to NOx formation from fluidized bed combustion of high-nitrogen fuel (distilled spirited lees (DSL)) in steam-rich atmospheres, to make clear the effect of steam on NOx reduction and the related mechanisms. The char and the volatile prepared by pyrolysis of the DSL were subjected to combustion tests in a fluidized bed to compare their NOx emission characteristics with that from combustion of the raw DSL, respectively. The results showed that with additional steam present in pyrolysis atmosphere, significantly more gas products were formed and bigger proportions of the total fuel nitrogen entered in the gas products. Additional steam also boosted generation of aliphatic hydrocarbons containing most of the nitrogen in the tar, which was helpful for reducing NOx. The presence of additional steam accelerated the release of the volatile and remarkably increased the yield of reducing pyrolysis gases and meanwhile changed the peak release sequence of H-2, to facilitate NOx reduction. With increasing the mass ratio of steam to fuel (S/F), the total NOx from the DSL combustion at 900 degrees C in 25 vol.% O-2 atmosphere and the conversion ratio of the char-N into NOx decreased but the contribution ratio of the char-N to the total NOx increased. When the S/F ratio exceeded 0.8 the char-N contributed more to the total NOx than the volatile-N did. (C) 2016 Elsevier Ltd. All rights reserved. |
Keyword | Fluidized Bed Combustion High-nitrogen Fuel Distilled Spirited Lees Steam Nox |
Subtype | Article |
WOS Headings | Science & Technology ; Technology |
DOI | 10.1016/j.fuel.2016.08.071 |
Indexed By | SCI |
Language | 英语 |
WOS Keyword | INDUSTRIAL BIOMASS WASTES ; FT-IR SPECTROSCOPY ; DECOUPLING COMBUSTION ; WATER-VAPOR ; REDUCTION ; EMISSION ; PYROLYSIS ; COAL ; CONVERSION ; OXYGEN |
WOS Research Area | Energy & Fuels ; Engineering |
WOS Subject | Energy & Fuels ; Engineering, Chemical |
Funding Organization | National Natural Science Foundation of China - China(21161140329) ; National Key Technology Development Program of China - China(2012BAC03B05) |
WOS ID | WOS:000385318600022 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.ipe.ac.cn/handle/122111/21567 |
Collection | 多相复杂系统国家重点实验室 |
Affiliation | 1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100091, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
Recommended Citation GB/T 7714 | Zhang, Guangyi,Zhu, Chuanqiang,Ge, Yaxin,et al. Fluidized bed combustion in steam-rich atmospheres for high-nitrogen fuel: Nitrogen distribution in char and volatile and their contributions to NOx[J]. FUEL,2016,186(DEC):204-214. |
APA | Zhang, Guangyi,Zhu, Chuanqiang,Ge, Yaxin,Liu, Xiaoxing,&Xu, Guangwen.(2016).Fluidized bed combustion in steam-rich atmospheres for high-nitrogen fuel: Nitrogen distribution in char and volatile and their contributions to NOx.FUEL,186(DEC),204-214. |
MLA | Zhang, Guangyi,et al."Fluidized bed combustion in steam-rich atmospheres for high-nitrogen fuel: Nitrogen distribution in char and volatile and their contributions to NOx".FUEL 186.DEC(2016):204-214. |
Files in This Item: | ||||||
File Name/Size | DocType | Version | Access | License | ||
Fluidized bed combus(1440KB) | 期刊论文 | 出版稿 | 限制开放 | CC BY-NC-SA | Application Full Text |
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment