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Method of increasing the sulfation capacity of alkaline earth sorbents

Patent ·
OSTI ID:5757393
; ;
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.
Assignee:
Department of Energy
Patent Number(s):
US 4312280
OSTI ID:
5757393
Country of Publication:
United States
Language:
English

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Related Subjects

01 COAL, LIGNITE, AND PEAT
010800* -- Coal
Lignite
& Peat-- Waste Management
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ABSORPTIVITY
ADSORPTION
CARBONACEOUS MATERIALS
CARBONATE ROCKS
CHALCOGENIDES
CHEMICAL REACTIONS
COAL
COMBUSTION
COMBUSTORS
DEHYDRATION
ENERGY SOURCES
EQUIPMENT
FLUIDIZED-BED COMBUSTION
FLUIDIZED-BED COMBUSTORS
FOSSIL FUELS
FUELS
HYDRATION
LIMESTONE
MATERIALS
OPTICAL PROPERTIES
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PARTICLES
PARTICULATES
PHYSICAL PROPERTIES
POLLUTION CONTROL EQUIPMENT
ROCKS
SCRUBBERS
SCRUBBING
SEDIMENTARY ROCKS
SOLVATION
SORPTION
SORPTIVE PROPERTIES
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
SURFACE PROPERTIES
THERMOCHEMICAL PROCESSES