Numerical flow simulation in the slagging stage of an MHD coal combustor

Conference · Tue Jan 01 04:00:00 EST 1991

OSTI ID:5655718

Norton, O P; Skaggs, A; Bouchillon, C W

MHD is a process for efficiently converting the energy in coal into electricity. The MHD process imposes some unique conditions on the coal combustor. First, the MHD process requires an electrically conductive gas stream. This is accomplished by burning the coal at a very high temperature, approaching 3000 K, by means of oxygen enrichment, and by seeding the combustion products with an easily ionized compound such as potassium carbonate. Second, it is desirable to prevent most of the coal slag from reaching the MHD channel. This is done by separating most of the slag from the gas stream in the combustor. A design criterion for MHD coal combustors in 90% slag rejection. The design of magnetohydrodynamics (MHD) combustors can be greatly enhanced by examining the flow patterns in existing MHD combustors. This article presents the present results of an effort to examine these flow patterns using numerical techniques. 13 refs., 9 figs., 1 tab.

• Research Organization: Mississippi State Univ., MS (United States). Diagnostic Instrumentation and Analysis Lab.
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC02-80ET15601
• OSTI ID: 5655718
• Report Number(s): CONF-911020-1; ON: DE91009352
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
014000* -- Coal
Lignite
& Peat-- Combustion
30 DIRECT ENERGY CONVERSION
300104 -- MHD Generators-- Duct Engineering & Fluid Dynamics
ALGORITHMS
ALKALI METAL COMPOUNDS
BOUNDARY CONDITIONS
CARBON COMPOUNDS
CARBONACEOUS MATERIALS
CARBONATES
CHEMICAL REACTIONS
COAL
COMBUSTION
COMBUSTION CHAMBERS
COMBUSTION PRODUCTS
COMBUSTORS
COMPUTER CODES
DENSITY
DESIGN
DIRECT ENERGY CONVERTERS
ENERGY SOURCES
EQUATIONS
FLOW MODELS
FLUID MECHANICS
FOSSIL FUELS
FUELS
MATERIALS
MATHEMATICAL LOGIC
MATHEMATICAL MODELS
MECHANICS
MHD CHANNELS
MHD GENERATORS
OXIDATION
OXYGEN COMPOUNDS
P CODES
PHYSICAL PROPERTIES
POTASSIUM CARBONATES
POTASSIUM COMPOUNDS
REMOVAL
SLAGS
THERMOCHEMICAL PROCESSES