Pulverized Coal Combustion - Definition, glossary, details

In a pulverized coal combustion process, the coal is ground to talcum-powder fineness, and injected through burners into the furnace with combustion air. The fine coal particles heat up rapidly, undergo pyrolysis and ignite. The bulk of the combustion air is then mixed into the flame to completely burn the coal char. The flue gas from the boiler passes through the flue gas clean-up units to remove particulates, SOx, and NOx. The flue gas exiting the clean-up section meets criteria pollutant permit requirements, typically contains 10–15% CO2 and is essentially at atmospheric pressure. Dry saturated steam is generated in the furnace boiler tubes and is heated further in the superheater section of the furnace. This high pressure, superheated steam drives the steam turbine coupled to an electric generator. The low-pressure steam exiting the steam turbine is condensed, and the condensate pumped back to the boiler for conversion into steam.

Other Terms

Pre-Combustion Carbon Capture Post combustion carbon capture Pyrolysis
Pelletizing Physical Absorption Physical Adsorption
Polar amplification Point Source Physical trapping
Particulate matter Permit

Power Plant CCS - Glossary

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