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Title: 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 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.

Inventors:
 [1];  [2];  [3]
  1. (Joliet, IL)
  2. (Chicago, IL)
  3. (Mokena, IL)
Publication Date:
Research Org.:
Argonne National Laboratory (ANL), Argonne, IL
OSTI Identifier:
863569
Patent Number(s):
US 4200815
Assignee:
United States of America as represented by United States (Washington, DC) ANL
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
mhd; generating; according; coal; combustion; gas; primary; fluid; copper; alloy; electrodynamic; generator; eliminating; heat; exchangers; combustor; liquid-metal; fluids; allowing; conventional; coalfired; steam; bottoming; plant; simpler; efficient; cheaper; operation; liquid; combined; mixer; resulting; two-phase; mixture; enters; turbine; electric; unit; expands; drives; magnetic; field; generates; electrical; power; separated; available; energy; recovered; exhausted; atmosphere; contains; sulfur; oxygen; bubbled; loop; remove; therefrom; concentrated; stream; dioxide; operated; substoichiometrically; control; oxide; level; two-phase mixture; electric generator; coal combustion; electrical power; heat exchange; magnetic field; heat exchanger; sulfur dioxide; heat exchangers; combustion gas; mhd generator; remove sulfur; copper alloy; sulfur therefrom; phase mixture; gas contains; gas expands; metal mhd; generates electrical; dynamic fluid; /310/

Citation Formats

Petrick, Michael, Pierson, Edward S., and Schreiner, Felix. MHD Generating system. United States: N. p., 1980. Web.
Petrick, Michael, Pierson, Edward S., & Schreiner, Felix. MHD Generating system. United States.
Petrick, Michael, Pierson, Edward S., and Schreiner, Felix. Tue . "MHD Generating system". United States. https://www.osti.gov/servlets/purl/863569.
@article{osti_863569,
title = {MHD Generating system},
author = {Petrick, Michael and Pierson, Edward S. and Schreiner, Felix},
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 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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1980},
month = {1}
}

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