Method of increasing the sulfation capacity of alkaline earth sorbents
Patent
·
OSTI ID:864110
- Chicago, IL
- Shorewood, IL
- Clarendon Hills, IL
A system and method for increasing the sulfation capacity of alkaline earth carbonates to scrub sulfur dioxide produced during the fluidized bed combustion of coal in which partially sulfated alkaline earth carbonates are hydrated in a fluidized bed to crack the sulfate coating and convert the alkaline earth oxide to the hydroxide. Subsequent dehydration of the sulfate-hydroxide to a sulfate-oxide particle produces particles having larger pore size, increased porosity, decreased grain size and additional sulfation capacity. A continuous process is disclosed.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Number(s):
- US 4312280
- OSTI ID:
- 864110
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
/110/502/
additional
alkaline
alkaline earth
bed
bed combustion
capacity
carbonates
coal
coating
combustion
continuous
continuous process
convert
crack
decreased
dehydration
dioxide
dioxide produced
disclosed
earth
earth carbonates
earth oxide
fluidized
fluidized bed
grain
grain size
hydrated
hydroxide
increased
increased porosity
increasing
larger
method
oxide
oxide particle
oxide produced
partially
particle
particles
pore
pore size
porosity
process
produced
produces
scrub
size
sorbents
subsequent
sulfate
sulfate-hydroxide
sulfate-oxide
sulfated
sulfation
sulfation capacity
sulfur
sulfur dioxide
additional
alkaline
alkaline earth
bed
bed combustion
capacity
carbonates
coal
coating
combustion
continuous
continuous process
convert
crack
decreased
dehydration
dioxide
dioxide produced
disclosed
earth
earth carbonates
earth oxide
fluidized
fluidized bed
grain
grain size
hydrated
hydroxide
increased
increased porosity
increasing
larger
method
oxide
oxide particle
oxide produced
partially
particle
particles
pore
pore size
porosity
process
produced
produces
scrub
size
sorbents
subsequent
sulfate
sulfate-hydroxide
sulfate-oxide
sulfated
sulfation
sulfation capacity
sulfur
sulfur dioxide