Method of increasing the sulfation capacity of alkaline earth so

Details Method of increasing the sulfation capacity of alkaline earth so Method of increasing the sulfation capacity of alkaline earth so

1980-03-13

1982-01-26

Favors, Edward G.

Furnaces

Process

Burning pulverized fuel

110342, 110345, 110263, 252411S, F23D 100

Patent

active

043122809

ABSTRACT:
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.

REFERENCES:
patent: 3966431 (1976-06-01), Craig et al.
patent: 4212851 (1980-07-01), Nemeth et al.

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