Experimental study on the characteristics of coal combustion in oxygen-enriched environments

Author

Tian, Luning ; Chen, Hanping ; Yang, Haiping ; Wang, Xianhua ; Zhang, Shihong

Author_Institution

State Key Lab. of Coal Combustion, Huazhong Univ. of Sci. & Technol., Wuhan, China

Volume

2

fYear

2011

fDate

20-22 May 2011

Firstpage

1640

Lastpage

1644

Abstract

Oxygen-enriched combustion in circulating fluidized bed (CFB) is a both technological and economical feasibly technology for carbon capture and storage. Therefore, in order to understand the coal combustion characteristics of oxygen-enriched combustion technology in CFB. The characteristics of coal combustion were analyzed by using the thermogravimetric analyzer (TGA) under different reaction conditions of variant reactive atmosphere, heating rate and particle size. Results showed that the higher O₂ concentration and heating rate can improve the characteristics of coal combustion in oxygen-enriched environments, while the opposite tendency is shown with the increasing of the particle size. The coal combustion kinetics was changed from a first-order reaction to second-order reaction when the the O₂/CO₂ increased to 40/60.

Keywords

air pollution control; carbon compounds; climate mitigation; coal; combustion; fluidised beds; oxygen; thermal analysis; CFB; CO₂; O₂; TGA; carbon capture; carbon storage; circulating fluidized bed; coal combustion kinetics; oxygen-enriched combustion environment; thermogravimetric analyzer; variant reactive atmosphere; Atmosphere; Coal; Heat engines; Heating; Ignition; coal combustion; kinetics; oxygen-enriched environment; thermogravimetric analyzer;

fLanguage

English

Publisher

ieee

Conference_Titel

Materials for Renewable Energy & Environment (ICMREE), 2011 International Conference on

Conference_Location

Shanghai

Print_ISBN

978-1-61284-749-8

Type

conf

DOI

10.1109/ICMREE.2011.5930648

Filename

5930648