Method of increasing the sulfation capacity of alkaline earth sorbents

Patent · Thu Mar 13 04:00:00 EST 1980

OSTI ID:7014801

Shearer, J A; Turner, C B; Johnson, I

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.

• DOE Contract Number: W-31109-ENG-38
• Assignee: Dept. of Energy
• Patent Number(s): None
• OSTI ID: 7014801
• Country of Publication: United States
• Language: English

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