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Title: Recovery and regeneration of spent MHD seed material by the formate process

Abstract

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.

Inventors:
; ; ; ; ;
Issue Date:
OSTI Identifier:
7176779
Patent Number(s):
5057294
Application Number:
PPN: US 7-421617
Assignee:
University of Tennessee Research Corporation, Knoxville, TN (United States)
DOE Contract Number:  
AC22-87PC79671
Resource Type:
Patent
Resource Relation:
Patent File Date: 13 Oct 1989
Country of Publication:
United States
Language:
English
Subject:
30 DIRECT ENERGY CONVERSION; 20 FOSSIL-FUELED POWER PLANTS; MHD POWER PLANTS; SEED RECOVERY; SPENT SEED; REGENERATION; CALCIUM HYDROXIDES; FORMATES; POTASSIUM CARBONATES; POTASSIUM COMPOUNDS; POTASSIUM SULFATES; ALKALI METAL COMPOUNDS; ALKALINE EARTH METAL COMPOUNDS; CALCIUM COMPOUNDS; CARBON COMPOUNDS; CARBONATES; CARBOXYLIC ACID SALTS; HYDROGEN COMPOUNDS; HYDROXIDES; OXYGEN COMPOUNDS; POWER PLANTS; SULFATES; SULFUR COMPOUNDS; 300103* - MHD Generators- Materials, Components, & Auxiliaries; 200200 - Fossil-Fueled Power Plants- Waste Management

Citation Formats

Sheth, A C, Holt, J K, Rasnake, D G, Solomon, R L, Wilson, G L, and Herrigel, H R. Recovery and regeneration of spent MHD seed material by the formate process. United States: N. p., 1991. Web.
Sheth, A C, Holt, J K, Rasnake, D G, Solomon, R L, Wilson, G L, & Herrigel, H R. Recovery and regeneration of spent MHD seed material by the formate process. United States.
Sheth, A C, Holt, J K, Rasnake, D G, Solomon, R L, Wilson, G L, and Herrigel, H R. Tue . "Recovery and regeneration of spent MHD seed material by the formate process". United States.
@article{osti_7176779,
title = {Recovery and regeneration of spent MHD seed material by the formate process},
author = {Sheth, A C and Holt, J K and Rasnake, D G and Solomon, R L and Wilson, G L and Herrigel, H R},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1991},
month = {10}
}