Slag interaction phenomena on MHD generator electrodes

Journal Article · Sat Jan 01 04:00:00 EST 1977 · J. Energy; (United States)

DOI:https://doi.org/10.2514/6.1977-109· OSTI ID:7295435

Stickler, D B; DeSaro, R

Coal slag layer development and equilibration in an open-cycle MHD generator has been investigated. The purpose is to define requirements imposed on flow system and electrode design by generator operation on potassium-seeded plasma produced by direct coal combustion. Experiments at 0.7 kg/sec flow have been conducted using clean fuel with oxygen-enriched air, with coal ash fed to simulate coal combustor mineral carryover. Results indicate that a stable flowing slag layer can be developed, that it is self-renewing via deposition from the gas and shear flow, and that it is compatible with base-load generator operation. Constraints on combustor slag carryover quantity and composition, system flowfield, and electrode design are described.

• Research Organization: Avco Everett Research Lab., Inc., MA
• OSTI ID: 7295435
• Journal Information: J. Energy; (United States), Journal Name: J. Energy; (United States) Vol. 1:3; ISSN JENED
• Country of Publication: United States
• Language: English

Related Subjects

30 DIRECT ENERGY CONVERSION
300104* -- MHD Generators-- Duct Engineering & Fluid Dynamics
ALKALI METALS
COAL-FIRED MHD GENERATORS
DIRECT ENERGY CONVERTERS
ELECTRODES
ELEMENTS
FLOW MODELS
LAYERS
MATHEMATICAL MODELS
METALS
MHD CHANNELS
MHD GENERATORS
OPEN-CYCLE MHD GENERATORS
PLASMA SEEDING
POTASSIUM
SLAGS
STABILITY