An overview on oxyfuel coal combustion-State of the art research and technology development
Abstract
Oxyfuel combustion is seen as one of the major options for CO 2 capture for future clean coal technologies. The paper provides an overview on research activities and technology development through a fundamental research underpinning the Australia/Japan Oxyfuel Feasibility Project. Studies on oxyfuel combustion on a pilot-scale furnace and a laboratory scale drop tube furnace are presented and compared with computational fluid dynamics (CFD) predictions. The research has made several contributions to current knowledge, including; comprehensive assessment on oxyfuel combustion in a pilot-scale oxyfuel furnace, modifying the design criterion for an oxy retrofit by matching heat transfer, a new 4-grey gas model which accurately predicts emissivity of the gases in oxy-fired furnaces has been developed for furnace modelling, the first measurements of coal reactivity comparisons in air and oxyfuel at laboratory and pilot-scale; and predictions of observed delays in flame ignition in oxy-firing.
- Publication:
-
Chemical Engineering Research and Design
- Pub Date:
- 2009
- DOI:
- 10.1016/j.cherd.2009.02.005
- Bibcode:
- 2009CERD...87.1003W
- Keywords:
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- Oxyfuel coal combustion;
- CO <SUB>2</SUB> capture;
- Heat transfer;
- CFD prediction;
- Reactivity