Coal Fired Power Plant Environmental Control
Optimizing existing plants so they reduce emissions and increase the amount of electricity produced with the same amount of coal.
Continuing to develop and refine best-available combustion technology, including circulating fluidized bed (CFB) technology, which includes supercritical and ultra supercritical combustion. This option may also include burning biomass as a fuel, thus reducing the level of CO2 emissions, and oxy-combustion for collecting CO2-rich flue gas.
Circulating fluidized bed (CFB) technology is an existing available technology, already being used to burn coal and other fuels to produce energy in a clean, environmentally responsible way. CFB is a clean coal combustion platform with a unique low temperature combustion process that can burn both traditional fuels and carbon-neutral fuels, including biomass, waste coals, tires, and processed waste materials. The technology can be used to significantly reduce CO2 emissions to the atmosphere.
Unlike conventional steam generators that burn the fuel in a high-temperature flame, CFB technology does not have burners or a flame within its furnace. CFB uses fluidisation technology to mix and circulate fuel particles with limestone as they burn in a low temperature combustion process. The limestone captures the sulphur oxides as they are formed, while the low-burning temperature minimizes the formation of nitrogen oxides.
The fuel and limestone particles are recycled over and over back to the process, which results in high efficiency for burning the fuel, capturing pollutants, and for transferring the fuel's heat energy into high-quality steam to produce power.
Biomass power plant-after the implementation of biomass power generation project, the problem of serious air pollution caused by straw burning has been fundamentally solved. Greenhouse gas emissions have been reduced, rural living environment has been improved. Compared with the same scale coal-fired power plant, the SO2 emission of the biomass power plant is less 161.6t/a than that of the coal-fired power plant, and the smoke and dust are less than 40.74t/a.
Another is gasification technology, gasification is a manufacturing process that converts any material containing carbon, including coal, into synthesis gas (also known as syngas). The syngas can be burned to produce electricity.
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