All dry solid potassium seed regeneration system for magnetohydrodynamic power generation plant
In a magnetohydrodynamic power plant where calcium carbonate seed is used to increase conductivity and scavenge sulfur, forming potassium sulfate, an improved process is disclosed for converting the potassium sulfate back into potassium carbonate for reuse in the power plant. The potassium sulfate is first reacted with a reducing agent in the presence of up to about 40% boric oxide at about 800/sup 0/ to about 1300/sup 0/C. For at least about one hour to produce potassium sulfide. The potassium sulfide is then reacted with carbon dioxide and steam at about 450/sup 0/ to about 750/sup 0/C. For at least about an hour to produce hydrogen sulf and potassium carbonate. Finally, the potassium carbonate and the hydrogen sulfide are separated and the potassium carbonate is recycled.
- Assignee:
- Westinghouse Electric Corp
- Patent Number(s):
- US 4243645
- OSTI ID:
- 6274561
- Country of Publication:
- United States
- Language:
- English
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Recovery and regeneration of spent MHD seed material by the formate process
Recovery and regeneration of spent MHD seed material by the formate process
Related Subjects
300103* -- MHD Generators-- Materials
Components
& Auxiliaries
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
CALCIUM CARBONATES
CALCIUM COMPOUNDS
CARBON COMPOUNDS
CARBONATES
COAL-FIRED MHD GENERATORS
DIRECT ENERGY CONVERTERS
ELEMENTS
MHD GENERATORS
MHD POWER PLANTS
NONMETALS
OXYGEN COMPOUNDS
POTASSIUM CARBONATES
POTASSIUM COMPOUNDS
POTASSIUM SULFATES
POWER PLANTS
RECOVERY
REGENERATION
SEED RECOVERY
SPENT SEED
SULFATES
SULFUR
SULFUR COMPOUNDS