U.S. Department of EnergyOffice of Scientific and Technical Information
MHD generating system
Abstract
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 coal-fired 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. 3 figs.
- Inventors:
- Publication Date:
- OSTI Identifier:
- 7008638
- Patent Number(s):
- US 4200815; A
- Application Number:
- PPN: US 5-943827
- Assignee:
- Dept. of Energy, Washington, DC (United States)
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 19 Sep 1978
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 30 DIRECT ENERGY CONVERSION; 01 COAL, LIGNITE, AND PEAT; 20 FOSSIL-FUELED POWER PLANTS; COAL-FIRED MHD GENERATORS; DESIGN; OPERATION; AIR POLLUTION CONTROL; COMBUSTION PRODUCTS; COPPER ALLOYS; ENERGY RECOVERY; MHD POWER PLANTS; SULFUR; WORKING FLUIDS; ALLOYS; CONTROL; DIRECT ENERGY CONVERTERS; ELEMENTS; FLUIDS; MHD GENERATORS; NONMETALS; POLLUTION CONTROL; POWER PLANTS; 300101* - MHD Generators- Design & Development; 014000 - Coal, Lignite, & Peat- Combustion; 200102 - Fossil-Fueled Power Plants- Power Cycles
Citation Formats
Petrick, M, Pierson, E S, and Schreiner, F. MHD generating system. United States: N. p., 1980.
Web.
Petrick, M, Pierson, E S, & Schreiner, F. MHD generating system. United States.
Petrick, M, Pierson, E S, and Schreiner, F. 1980.
"MHD generating system". United States.
@article{osti_7008638,
title = {MHD generating system},
author = {Petrick, M and Pierson, E S and Schreiner, F},
abstractNote = {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 coal-fired 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. 3 figs.},
doi = {},
url = {https://www.osti.gov/biblio/7008638},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Apr 29 00:00:00 EDT 1980},
month = {Tue Apr 29 00:00:00 EDT 1980}
}