Recovery and regeneration of spent MHD seed material by the formate process
Patent
·
OSTI ID:7176779
The specification discloses a spent seed recovery and regeneration process for an MHD power plant employing an alkali metal salt seed material such as potassium salt wherein the spent potassium seed in the form of potassium sulfate is collected from the flue gas and reacted with calcium hydroxide and carbon monoxide in an aqueous solution to cause the formation of calcium sulfate and potassium formate. The pH of the solution is adjusted to suppress formation of formic acid and to promote precipitation of any dissolved calcium salts. The solution containing potassium formate is then employed to provide the potassium salt in the form of potassium formate or, optionally, by heating the potassium formate under oxidizing conditions to convert the potassium formate to potassium carbonate. 5 figures.
- DOE Contract Number:
- AC22-87PC79671
- Assignee:
- University of Tennessee Research Corporation, Knoxville, TN (United States)
- Patent Number(s):
- A; US 5057294
- Application Number:
- PPN: US 7-421617
- OSTI ID:
- 7176779
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
20 FOSSIL-FUELED POWER PLANTS
200200 -- Fossil-Fueled Power Plants-- Waste Management
30 DIRECT ENERGY CONVERSION
300103* -- MHD Generators-- Materials
Components
& Auxiliaries
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
CALCIUM COMPOUNDS
CALCIUM HYDROXIDES
CARBON COMPOUNDS
CARBONATES
CARBOXYLIC ACID SALTS
FORMATES
HYDROGEN COMPOUNDS
HYDROXIDES
MHD POWER PLANTS
OXYGEN COMPOUNDS
POTASSIUM CARBONATES
POTASSIUM COMPOUNDS
POTASSIUM SULFATES
POWER PLANTS
REGENERATION
SEED RECOVERY
SPENT SEED
SULFATES
SULFUR COMPOUNDS
200200 -- Fossil-Fueled Power Plants-- Waste Management
30 DIRECT ENERGY CONVERSION
300103* -- MHD Generators-- Materials
Components
& Auxiliaries
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
CALCIUM COMPOUNDS
CALCIUM HYDROXIDES
CARBON COMPOUNDS
CARBONATES
CARBOXYLIC ACID SALTS
FORMATES
HYDROGEN COMPOUNDS
HYDROXIDES
MHD POWER PLANTS
OXYGEN COMPOUNDS
POTASSIUM CARBONATES
POTASSIUM COMPOUNDS
POTASSIUM SULFATES
POWER PLANTS
REGENERATION
SEED RECOVERY
SPENT SEED
SULFATES
SULFUR COMPOUNDS