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US 11,028,733 B2Granted
Coal plant supplementary air and exhaust injection systems and methods of operation
AssigneePowerphase International, LLC
InventorRobert J. Kraft
Life of this patent
Estimating the term…
Abstract
The invention relates generally to electrical power systems or steam generator systems including generating capacity of a coal plant where specific emissions and power is improved with an alternately fueled engine driving one or more air processes.
Claims19
A coal-fired energy system comprising:
- a coal-fired steam generator having a coal feed system and a main air feed system for producing heat to a boiler for producing steam;
- one or more steam turbines in fluid communication with the steam generator;
- piping for passing the steam between the steam generator and the one or more steam turbines;
- and,
- an auxiliary air compression system capable of providing compressed air for a soot blower of the coal-fired steam generator and comprising a compressor selectively coupled to an electric motor or a fueled engine;
- wherein coupling the compressor with the fueled engine enables the coal-fired steam generator to deliver a power load to an electrical grid that is greater than a power load delivered to the electric grid when the compressor is coupled to the electric motor.
3 more elements
A method of operating a coal fired energy system comprising:
- operating a coal fired steam generator comprising a coal feed system and a main air feed system to provide a coal-air mixture as a heating source for a boiler for generating steam;
- operating an auxiliary air compression system comprising a compressor for providing an auxiliary supply of compressed air to a soot blower of the coal-fired steam generator, where the compressor is selectively coupled to a fueled engine or an electric motor;
- injecting the supply of compressed air along walls of the boiler to remove soot and ash buildup from the boiler;
- and,
- increasing the power load delivered to an electrical grid by the coal fired steam generator by decoupling the electric motor from the compressor and coupling the fueled engine to the compressor.
2 more elements
A method of operating a coal fired energy system comprising:
- operating a coal fired steam generator comprising a coal feed system and a main air feed system to provide a coal-air mixture as a heating source for a boiler for generating steam;
- operating an auxiliary air compression system comprising a compressor for providing an auxiliary supply of compressed air to a soot blower of the coal-fired steam generator, where the compressor is selectively coupled to a fueled engine or an electric motor;
- and,
- injecting the supply of compressed air along walls of the boiler to remove soot and ash buildup from the boiler;
- wherein the compressor is selectively coupled to the fueled engine or the electric motor to modify the power output of the coal fired steam generator based on a power output requirement.
2 more elements
Dependencies are inferred from the claim text.