Reactivities of coals and synthetic model coal under oxy-fuel conditions

被引：58

作者：

Wang, Chang'an ^{[1
]}

Du, Yongbo ^{[1
]}

Che, Defu ^{[1
]}

机构：

[1] Xi An Jiao Tong Univ, Sch Energy & Power Engn, State Key Lab Multiphase Flow Power Engn, Xian 710049, Peoples R China

来源：

THERMOCHIMICA ACTA | 2013年 / 553卷

关键词：

Model coal; Oxy-fuel combustion; Reactivity; Thermogravimetric analysis; Kinetics analysis; ICTAC KINETICS PROJECT; CO2 GASIFICATION EXPERIMENTS; BIOMASS CHAR PARTICLES; COMPUTATIONAL ASPECTS; ACTIVATION-ENERGY; THERMAL-BEHAVIOR; HETEROGENEOUS REDUCTION; PULVERIZED COAL; HEATING RATE; COMBUSTION;

D O I：

10.1016/j.tca.2012.11.023

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The comparison between reactivities of coals and synthetic model coal under oxy-fuel conditions has been conducted in this paper. Experimental results indicate that the thermogravimetric curve shapes of model coal under oxy-fuel conditions are similar to those of real coals. The thermal reaction behaviors of model coal present a striking similarity to those of high volatile lignite. The synthetic model coal can be representative of a real coal in oxy-fuel combustion. Compared to conventional combustion, the combustion process of model coal under oxy-fuel conditions is obviously delayed. In addition, the increase of oxygen concentration can significantly improve the combustion performance of model coal. Kinetics analysis results show that the activation energy of model coal combustion for a given conversion fraction is not constant. (c) 2012 Elsevier B.V. All rights reserved.

引用

页码：8 / 15

页数：8

共 57 条

[1] Characterisation of model compounds and a synthetic coal by TG/MS/FTIR to represent the pyrolysis behaviour of coal [J].