Thermogravimetric analysis of gasification reactivity of coal chars with steam and CO2 at moderate temperatures

CORC > 工程热物理研究所 > 中国科学院工程热物理研究所 > 中国科学院工程热物理所（论文库） > 期刊论文（SCI）

	Thermogravimetric analysis of gasification reactivity of coal chars with steam and CO2 at moderate temperatures
	Fan, Dongmei 1,2; Zhu, Zhiping 1; Na, Yongjie 1; Lu, Qinggang 1
刊名	JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
	2013-08-01
卷号	113 期号:2 页码:599-607
关键词	Coal Gasification reactivity Thermogravimetric analysis Distributed activation energy
英文摘要	Comparative study on the gasification reactivity of the three types of Chinese coal chars with steam and CO2 at 850-1050 A degrees C was conducted by isothermal thermogravimetric analysis. The effects of coal rank, pore structure, ash behavior, and gasification temperature on the gasification reactivity of coal chars were investigated. It is found that the gasification reactivity difference between different coal chars changes with reaction degree and gasification temperature, and has no immediate connection with coal rank and initial pore structure. Ash behavior plays an important role in the char reactivity, and changes with gasification temperature and reaction degree due to the variation in the compositions and relative amount. The influence of pore structure is more noticeable during a relatively moderate reaction process. The relative reactivity ratio of steam to CO2 gasification generally decreases with the increasing temperature, and is related with the catalytic effect of inherent minerals. The characteristic parameters of the chars were analyzed, finding that the value of half reaction specific rate is approximate to the average specific rate under the same conditions. The nth-order distributed activation energy model is proposed to describe the coal char gasification process, and the results show that the activation energy increases with the increasing carbon conversion.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Chemistry, Analytical ; Chemistry, Physical
研究领域[WOS]	Chemistry
关键词[WOS]	VICTORIAN BROWN-COAL ; CARBON-DIOXIDE ; ELEVATED-TEMPERATURES ; REACTION-KINETICS ; PYROLYSIS ; ACTIVATION ; COMBUSTION ; MODEL
收录类别	SCI
语种	英语
WOS记录号	WOS:000321784900025
内容类型	期刊论文
源URL	[http://ir.etp.ac.cn/handle/311046/98845]
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	Fan, Dongmei,Zhu, Zhiping,Na, Yongjie,et al. Thermogravimetric analysis of gasification reactivity of coal chars with steam and CO2 at moderate temperatures[J]. JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY,2013,113(2):599-607.
APA	Fan, Dongmei,Zhu, Zhiping,Na, Yongjie,&Lu, Qinggang.(2013).Thermogravimetric analysis of gasification reactivity of coal chars with steam and CO2 at moderate temperatures.JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY,113(2),599-607.
MLA	Fan, Dongmei,et al."Thermogravimetric analysis of gasification reactivity of coal chars with steam and CO2 at moderate temperatures".JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY 113.2(2013):599-607.