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US 9,285,112 B2Granted
Method for energy storage to utilize intermittent renewable energy and low-value electricity for CO2 capture and utilization
AssigneeUniversity of Kentucky Research Foundation
InventorsKunlei Liu, James Kyle Neathery, Joseph Eugene Remias, Cameron Anthony Lippert, Nick Edward Holubowitch
Life of this patent
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Abstract
A power plant includes a boiler, a steam turbine, a generator driven by that steam turbine, a condenser, a post combustion processing system and an energy storage system including at least one electrochemical cell to store excess electrical energy generated by the generator during period valley demand and release thermal energy for power plant operations at other times.
Claims8
A power plant, comprising:
- a boiler that receives fuel, feed-water and an airstream to produce steam and a flue gas;
- a steam turbine that receives said steam to drive a generator to produce electricity and discharges spent steam;
- a condenser that receives said spent steam and converts said spent steam to condensed feed water;
- a post combustion processing system that processes said flue gas comprising a flue gas scrubber, a CO2 absorbent reagent for removing CO2 from said flue gas in said scrubber and a primary stripper for regenerating spent CO2 absorbent reagent;
- and
- an energy storage system comprising at least one electrochemical cell to store excess electrical energy generated by said generator during period valley demand and release thermal energy for power plant operations, the at least one electrochemical cell comprising an anode, a cathode, an electrolyte a heat transfer media and a heat exchanger for transferring heat from said heat transfer media to said spent absorbent reagent to aid in regeneration of said spent absorbent reagent.
3 more elements
A method of improving power plant operating efficiency, comprising:
- combusting fuel in an air stream to convert feed-water into steam;
- driving a steam turbine with said steam and producing electricity;
- removing CO2, from flue gas produced by combusting said fuel, using a CO2 absorbent reagent;
- storing excess electricity produced during period valley demand in an electrochemical cell;
- converting said stored electrical energy to thermal energy;
- and
- using said thermal energy to aid in regenerating said CO2 absorbent reagent.
4 more elements
Dependencies are inferred from the claim text.