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

Patent ·
OSTI ID:868030
 [1];  [2];  [2];  [3];  [4];  [3]
  1. Tullahoma, TN
  2. Manchester, TN
  3. Seattle, WA
  4. Redmond, WA
+ Show Author Affiliations

The specification discloses a spent seed recovery and regeneration process for an MHM 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 supress 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.

Research Organization:
University of Tennessee
Sponsoring Organization:
USDOE
DOE Contract Number:
AC22-87PC79671
Assignee:
University of Tennessee Research Corporation (Knoxville, TN)
Patent Number(s):
US 5057294
OSTI ID:
868030
Country of Publication:
United States
Language:
English

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Recovery and regeneration of spent MHD seed material by the formate process
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MHD seed recovery and regeneration: Final report
Technical Report · Fri Oct 14 00:00:00 EDT 1988 · OSTI ID:5951738

Related Subjects

/423/
acid
adjusted
alkali
alkali metal
aqueous
aqueous solution
calcium
calcium hydroxide
calcium salts
calcium sulfate
carbon
carbon monoxide
carbonate
collected
conditions
containing
convert
discloses
dissolved
employed
employing
flue
flue gas
form
formate
formation
formic
formic acid
gas
generation process
heating
hydroxide
material
metal
metal salt
mhd
mhm
monoxide
optionally
oxidizing
oxidizing conditions
ph
plant
potassium
potassium carbonate
potassium salt
potassium seed
potassium sulfate
power
power plant
precipitation
process
promote
provide
reacted
recovery
regeneration
regeneration process
salt
salts
seed
seed material
solution
solution containing
specification
specification discloses
spent
sulfate
supress