Coal-fired power generation system and air heat with recirculation path and related method
AssigneeOrlando Utilities Commission
InventorJASON WAILGUM
Life of this patent
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Abstract
A coal-fired power generation system may include a boiler outputting flue gas, a coal pulverizer associated with the boiler, and a heat exchanger. The heat exchanger may be configured to exchange heat from the flue gas to a primary air path and a secondary air path. The primary air path is coupled to the coal pulverizer, and the secondary air path is coupled to the boiler. The coal-fired power generation system may include a controllable air recirculation path coupled from an output of the primary air path to an input of the secondary air path.
Claims21
A coal-fired power generation system comprising:
- a boiler outputting flue gas;
- a coal pulverizer associated with the boiler;
- a heat exchanger configured to exchange heat from the flue gas to a primary air path and a secondary air path, the primary air path coupled to the coal pulverizer and the secondary air path coupled to the boiler;
- and
- a controllable air recirculation path coupled from an output of the primary air path to an input of the secondary air path.
An air heater for a coal-fired power generation system comprising a boiler outputting flue gas, and a coal pulverizer associated with the boiler, the air heater comprising:
- a heat exchanger configured to exchange heat from the flue gas to a primary air path and a secondary air path, the primary air path coupled to the coal pulverizer and the secondary air path coupled to the boiler;
- and
- a controllable air recirculation path coupled from an output of the primary air path to an input of the secondary air path.
A method for operating a coal-fired power generation system comprising a boiler outputting flue gas, and a coal pulverizer associated with the boiler, the method comprising:
- exchanging heat from the flue gas to a primary air path and a secondary air path using a heat exchanger, the primary air path coupled to the coal pulverizer and the secondary air path coupled to the boiler;
- and
- controlling an air recirculation path coupled from an output of the primary air path to an input of the secondary air path.
Dependencies are inferred from the claim text.