MHD generating system. [working fluid of coal combustion products and copper particles]
According to the present invention, coal combustion gas is the primary working fluid and copper or a copper alloy is the electrodynamic fluid in the MHD generator, thereby eliminating the heat exchangers between the combustor and the liquid-metal MHD working fluids, allowing the use of a conventional coalfired steam bottoming plant, and making the plant simpler, more efficient and cheaper. In operation, the gas and liquid are combined in a mixer and the resulting two-phase mixture enters the MHD generator. The MHD generator acts as a turbine and electric generator in one unit wherein the gas expands, drives the liquid across the magnetic field and thus generates electrical power. The gas and liquid are separated, and the available energy in the gas is recovered before the gas is exhausted to the atmosphere. Where the combustion gas contains sulfur, oxygen is bubbled through a side loop to remove sulfur therefrom as a concentrated stream of sulfur dioxide. The combustor is operated substoichiometrically to control the oxide level in the copper.
- Assignee:
- Dept. of Energy
- Patent Number(s):
- US 4200815
- OSTI ID:
- 5349376
- Resource Relation:
- Patent File Date: Filed date 19 Sep 1978; Other Information: PAT-APPL-943,827
- Country of Publication:
- United States
- Language:
- English
Similar Records
MHD generating system. [open-cycle coal-fired two-phase liquid metal MHD generator]
MHD generating system
Related Subjects
COAL-FIRED MHD GENERATORS
TWO-PHASE FLOW
LIQUID-METAL MHD GENERATORS
COMBUSTION PRODUCTS
COPPER
COPPER ALLOYS
CYCLONE COMBUSTORS
DESIGN
DESULFURIZATION
MHD POWER PLANTS
ALLOYS
CHEMICAL REACTIONS
COMBUSTORS
DIRECT ENERGY CONVERTERS
ELEMENTS
FLUID FLOW
METALS
MHD GENERATORS
POWER PLANTS
TRANSITION ELEMENTS
300101* - MHD Generators- Design & Development