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Comparison of Direct Combustion in a Circulating Fluidized Bed System and Decoupling Combustion in a Dual Fluidized Bed System for Distilled Spirit Lees
Han, Zhennan1,2; Zeng, Xi1; Yao, Changbin1; Wang, Yin1; Xu, Guangwen1; Zeng, X
2016-03-01
发表期刊ENERGY & FUELS
ISSN0887-0624
卷号30期号:3页码:1693-1700
摘要At present in China, a fluidized bed combustor is not suitable to treat a high-water-containing (30-60 wt %) industrial biomass residue, such as distilled spirit lees (DSL), which can cause a low bed temperature and inflammation retardation. Our previous fundamental studies showed that the so-called dual fluidized bed gasification decoupling combustion technology (or decoupling combustion for short) can ensure the highly efficient and stable combustion for high-water-containing biomass fuel and lower NO emission as well. In this study, the combustion characteristics of DSL in a circulating fluidized bed (CFB) system and a dual fluidized bed (DFB) system will be examined and compared systematically. For direct combustion of DSL in a CFB system, the high moisture of 30 wt % decreased the bottom temperature of the combustor significantly and brought in unstable combustion, thus leading to s large amount of auxiliary fuel (such as coal) needed to raise the temperature to reach an adiabatic flame temperature and ensure normal bed combustion. Besides, the slag formed in the loop seal also affected the stable run of the DFB combustion system. For decoupling combustion of DSL in a DFB system, both the temperatures in the gasifier and combustor were kept stable and a uniform temperature distribution in the combustor was also observed. In terms of gas emission, the average NO contents in a CFB system and a DFB system were about 160 ppm (369 mg/m(3)) and 50 ppm, respectively, which fully verified the property of low NO emission by decoupling combustion. The direct combustion of DSL in a CFB system and decoupling combustion in a DFB system were compared in an industrial demonstration plant for demonstrating technical features of decoupling combustion.
关键词Municipal Solid-wastes No Reduction Biomass Char Coal Moisture Gasification Pyrolysis Emission Fuel Rich
文章类型Article
学科领域Energy & Fuels ; Engineering, Chemical ; Energy & Fuels ; Engineering
WOS标题词Science & Technology ; Technology
DOI10.1021/acs.energyfuels.5b02265
URL查看原文
收录类别SCI
语种英语
关键词[WOS]MUNICIPAL SOLID-WASTES ; NO REDUCTION ; BIOMASS CHAR ; COAL ; MOISTURE ; GASIFICATION ; PYROLYSIS ; EMISSION ; FUEL ; RICH
WOS研究方向Energy & Fuels ; Engineering
WOS类目Energy & Fuels ; Engineering, Chemical
项目资助者National Natural Science Foundation of China(21306209 ; National Basic Research Program of China(2014CB744303) ; Strategic Priority Research Program of the Chinese Academy of Sciences on Clean and High-Efficiency Utilization of Low-Rank Coal(XDA07050400) ; National High-Tech Research and Development Program of China(2012AA021401) ; U1302273)
WOS记录号WOS:000372562800018
引用统计
被引频次:6[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/20677
专题研究所(批量导入)
通讯作者Zeng, X
作者单位1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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Han, Zhennan,Zeng, Xi,Yao, Changbin,et al. Comparison of Direct Combustion in a Circulating Fluidized Bed System and Decoupling Combustion in a Dual Fluidized Bed System for Distilled Spirit Lees[J]. ENERGY & FUELS,2016,30(3):1693-1700.
APA Han, Zhennan,Zeng, Xi,Yao, Changbin,Wang, Yin,Xu, Guangwen,&Zeng, X.(2016).Comparison of Direct Combustion in a Circulating Fluidized Bed System and Decoupling Combustion in a Dual Fluidized Bed System for Distilled Spirit Lees.ENERGY & FUELS,30(3),1693-1700.
MLA Han, Zhennan,et al."Comparison of Direct Combustion in a Circulating Fluidized Bed System and Decoupling Combustion in a Dual Fluidized Bed System for Distilled Spirit Lees".ENERGY & FUELS 30.3(2016):1693-1700.
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