Thermogravimetric analysis of combustion characteristics and kinetic parameters of pulverized coals in oxy-fuel atmosphere

被引：123

作者：

Niu, S. L. ^{[1
]}

Lu, C. M. ^{[1
]}

Han, K. H. ^{[1
]}

Zhao, J. L. ^{[1
]}

机构：

[1] Shandong Univ, Coll Energy & Power Engn, Jinan 250061, Shandong, Peoples R China

来源：

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 2009年 / 98卷 / 01期

关键词：

Thermogravimetric analysis; Oxy-fuel combustion; Characteristic parameters; Model-fitting approach; Kinetic triplet; CARBONACEOUS MATERIALS; THERMAL-ANALYSIS; PYROLYSIS; LIGNITE; MIXTURES; BEHAVIOR; BIOMASS; O-2/CO2; GAS;

D O I：

10.1007/s10973-009-0133-1

中图分类号：

O414.1 [热力学];

学科分类号：

070201 [理论物理];

摘要：

Temperature programmed combustions (TPC) of Yang-Quan anthracite, Liao-Cheng lean coal and Li-Yan bituminous coal in oxy-fuel atmosphere were conducted in a thermogravimetric analyzer and characteristic parameters were deduced from the TG-DTG curves. The results showed that combustion got harder to progress as the coalification degree increasing. Within range of 40%, effect of heightening O-2 concentration favored the combustion process, but beyond this zone, the effect leveled off. The model-fitting mathematical approach was used to evaluated the kinetic triplet (f (alpha), E, A) through Coats-Redfern method. The calculation showed that D (3)-Jander was the proper reaction model and the evaluations of E and A validated the experimental results.

引用

页码：267 / 274

页数：8

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