Characteristics and economic evaluation of a power plant applying oxy-fuel combustion to increase power output and decrease CO2 emission

“…The oxy-fuel combustion of coal with recycled flue gas is considered as a promising option to ensure the continued use of coal for electric power production [2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Oxy-fuel combustion of coal and biomass blends

Riaza

Gil

Álvarez

et al. 2012

Energy

154

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The ignition temperature, burnout and NO emissions of blends of a semi-anthracite and a high-volatile bituminous coal with 10 and 20 wt.% of olive waste were studied under oxy-fuel combustion conditions in an entrained flow reactor (EFR). The results obtained under several oxy-fuel atmospheres (21%O 2 -79%CO 2 , 30%O 2 -70% CO 2 and 35%O 2 -65%CO 2 ) were compared with those attained in air. The results indicated that replacing N 2 by CO 2 in the combustion atmosphere with 21% of O 2 caused an increase in the temperature of ignition and a decrease in the burnout value. When the O 2 concentration was increased to 30 and 35%, the temperature of ignition was lower and the burnout value was higher than in air conditions. A significant reduction in ignition temperature and a slight increase in the burnout value was observed after the addition of biomass, this trend becoming more noticeable as the biomass concentration was increased. The emissions of NO during oxy-fuel combustion were lower than under air-firing. However, they remained similar under all the oxy-fuel atmospheres with increasing O 2 concentrations. Emissions of NO were significantly reduced by the addition of biomass to the bituminous coal, although this effect was less noticeable in the case of the semianthracite.

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“…The computation is performed using the FLUENT software. The gas phase turbulence is represented by Realizable k-e model [10]. Since the particle phase flow is sufficiently dilute.…”

Section: Particle Trajectory Analysismentioning

confidence: 99%

“…The coal combustion can cause serious air pollution [7e9], such as NO x , SO x , CO 2 and so on. As environmental protection requirements improving among countries around the world, clean coal technologies have been developed and used widely, such as coal combustion with CO 2 /O 2 oxy-fuel combustion [10,11], the ultra-supercritical plant, the integrated gasification combined cycle and pressurized fluidized bed combustion. Some new coalbased power generation units have begun to adopt the above clean coal technologies.…”

Section: Introductionmentioning

confidence: 99%

Gas/particle flow and combustion characteristics and NOx emissions of a new swirl coal burner

Chen

Zhu

et al. 2011

Energy

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Characteristics and economic evaluation of a power plant applying oxy-fuel combustion to increase power output and decrease CO2 emission

Cited by 33 publications

References 29 publications

Heavy metal enrichment characteristics in ash of municipal solid waste combustion in CO2/O2 atmosphere

Heavy metal enrichment characteristics in ash of municipal solid waste combustion in CO2/O2 atmosphere

Oxy-fuel combustion of coal and biomass blends

Gas/particle flow and combustion characteristics and NOx emissions of a new swirl coal burner

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