An open-cycle magnetohydrodynamic power plant with CO sub 2 recycling
A method of converting the chemical energy of fossil fuel to electrical and mechanical energy with a MHD generator. The fossil fuel is mixed with preheated oxygen and carbon dioxide and a conducting seed of potassium carbonate to form a combustive and electrically conductive mixture which is burned in a combustion chamber. The burned combustion mixture is passed through a MHD generator to generate electrical energy. The burned combustion mixture is passed through a diffuser to restore the mixture approximately to atmospheric pressure, leaving a spent combustion mixture which is used to heat oxygen from an air separation plant and recycled carbon dioxide for combustion in a high temperature oxygen preheater and for heating water/steam for producing superheated steam. Relatively pure carbon dioxide is separated from the spent combustion mixture for further purification or for exhaust, while the remainder of the carbon dioxide is recycled from the spent combustion mixture to a carbon dioxide purification plant for removal of water and any nitrous oxides present, leaving a greater than 98% pure carbon dioxide. A portion of the greater than 98% pure carbon dioxide stream is recovered and the remainder is recycled to combine with the oxygen for preheating and combination with the fossil fuel to form a combustion mixture. 3 figs., 5 tabs.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (USA)
- DOE Contract Number:
- W-31109-ENG-38
- Assignee:
- Dept. of Energy
- Patent Number(s):
- PATENTS-US-A7428676
- Application Number:
- ON: DE91011677; PPN: US 7-428676
- OSTI ID:
- 5743071
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CARBON DIOXIDE
MATERIALS RECOVERY
MHD POWER PLANTS
COMBUSTION PRODUCTS
COMBUSTION
DIAGRAMS
EFFICIENCY
INVENTIONS
NITROGEN OXIDES
OPEN-CYCLE MHD GENERATORS
OXYGEN
POTASSIUM CARBONATES
STOICHIOMETRY
WATER
ALKALI METAL COMPOUNDS
CARBON COMPOUNDS
CARBON OXIDES
CARBONATES
CHALCOGENIDES
CHEMICAL REACTIONS
DIRECT ENERGY CONVERTERS
ELEMENTS
HYDROGEN COMPOUNDS
MANAGEMENT
MHD GENERATORS
NITROGEN COMPOUNDS
NONMETALS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
POTASSIUM COMPOUNDS
POWER PLANTS
PROCESSING
RECOVERY
THERMOCHEMICAL PROCESSES
WASTE MANAGEMENT
WASTE PROCESSING
200102* - Fossil-Fueled Power Plants- Power Cycles
200202 - Fossil-Fueled Power Plants- Waste Management- Noxious Gas & Particulate Emissions