Transformation Characteristics of Sodium of Zhundong Coal Combustion/Gasification in Circulating Fluidized Bed

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	Transformation Characteristics of Sodium of Zhundong Coal Combustion/Gasification in Circulating Fluidized Bed
	Song, Guoliang 1; Song, Weijian 1,2; Qi, Xiaobin 1,2; Lu, Qinggang 1
刊名	ENERGY & FUELS
	2016-04-01
卷号	30 期号:4 页码:3473-3478
英文摘要	In this study, the transformation characteristics of sodium in Zhundong coal were investigated, following its combustion (oxidizing atmosphere) and gasification (reducing atmosphere) in a circulating fluidized bed (CFB) experimental system of 0.25 t/d high alkali coal thermochemical conversion. The equilibrium distribution of Na is predicted under the oxidizing and reducing atmospheres by the thermodynamic equilibrium calculation. Na in bottom ash and fly ash evidently decreases as the temperature increases in both the combustion and gasification processes. More Na is retained in the ash during the gasification process. Na exists as sodium aluminosilicate in both combustion bottom ash and gasification bottom ash, and mainly as sodium sulfate (Na2SO4) in combustion fly ash and sodium chloride (NaCl) in gasification fly ash. Na undergoes different transformation processes through combustion and gasification. Gaseous metallic sodium, Na2O and NaCl are released from the coal and condense directly on the cold tube surface during gasification. When SO2 is present, Na reacts with it, forming a large amount of gaseous sodium sulfates during combustion.
WOS标题词	Science & Technology ; Technology
类目[WOS]	Energy & Fuels ; Engineering, Chemical
研究领域[WOS]	Energy & Fuels ; Engineering
关键词[WOS]	VICTORIAN BROWN-COAL ; LOW-RANK COAL ; ASH DEPOSITION ; FIRED BOILER ; CO2 GASIFICATION ; CHAR REACTIVITY ; BITUMINOUS COAL ; FOSSIL-FUELS ; PYROLYSIS ; ALKALI
收录类别	SCI
语种	英语
WOS记录号	WOS:000374804400100
内容类型	期刊论文
源URL	[http://ir.etp.ac.cn/handle/311046/112508]
专题	工程热物理研究所_中国科学院工程热物理所（论文库）_期刊论文（SCI）
作者单位	1.Chinese Acad Sci, Inst Engn Thermophys, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Song, Guoliang,Song, Weijian,Qi, Xiaobin,et al. Transformation Characteristics of Sodium of Zhundong Coal Combustion/Gasification in Circulating Fluidized Bed[J]. ENERGY & FUELS,2016,30(4):3473-3478.
APA	Song, Guoliang,Song, Weijian,Qi, Xiaobin,&Lu, Qinggang.(2016).Transformation Characteristics of Sodium of Zhundong Coal Combustion/Gasification in Circulating Fluidized Bed.ENERGY & FUELS,30(4),3473-3478.
MLA	Song, Guoliang,et al."Transformation Characteristics of Sodium of Zhundong Coal Combustion/Gasification in Circulating Fluidized Bed".ENERGY & FUELS 30.4(2016):3473-3478.