Method of removing sulfur emissions from a fluidized-bed combustion process

Patent · Sun Jan 01 00:00:00 EST 1978

OSTI ID:863090

Vogel, Gerhard John ^[1]; Jonke, Albert A ^[1]; Snyder, Robert B ^[2]

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1. Elmhurst, IL
2. Naperville, IL

Alkali metal or alkaline earth metal oxides are impregnated within refractory support material such as alumina and introduced into a fluidized-bed process for the combustion of coal. Sulfur dioxide produced during combustion reacts with the metal oxide to form metal sulfates within the porous support material. The support material is removed from the process and the metal sulfate regenerated to metal oxide by chemical reduction. Suitable pore sizes are originally developed within the support material by heat-treating to accommodate both the sulfation and regeneration while still maintaining good particle strength.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL (United States)
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4091076
• OSTI ID: 863090
• Country of Publication: United States
• Language: English

Related Subjects

method
removing
sulfur
emissions
fluidized-bed
combustion
process
alkali
metal
alkaline
earth
oxides
impregnated
refractory
support
material
alumina
introduced
coal
dioxide
produced
reacts
oxide
form
sulfates
porous
removed
sulfate
regenerated
chemical
reduction
suitable
pore
sizes
originally
developed
heat-treating
accommodate
sulfation
regeneration
maintaining
particle
strength
fluidized-bed combustion
metal sulfate
removing sulfur
combustion process
bed combustion
alkali metal
metal oxide
alkaline earth
pore size
sulfur dioxide
earth metal
metal oxides
porous support
pore sizes
support material
form metal
metal sulfates
chemical reduction
dioxide produced
oxide produced
/423/252/502/