[Stoves] Burning coal in cookstoves

[Tom Miles]

A 4:1 molar ratio of calcium to sulfur has commonly been used for sulfur
capture in fluidized bed combustion. The capture reverses in a reducing
atmosphere so that in a circulating fluidized bed a portion of the sulfur
that has been captured in the flyash in the oxidation zone is sometimes
released in the cyclone where the hot char and particulate are returned to
the fluidized bed. 

Tom
 

> a coal burning power plant, the sulphurous flue gases are reacted with
> lime to form CaS, or CaSO4. In such a "flue gas desulphurizing
> operation", the efficiency of lime utilization can be poor... instead
> on
> only one mole of Ca being required to capture one mole of S, the molar
> ratio may be excessive... perhaps the ratio of Ca/S could be 1.2, 1.5
> or
> perhaps as high as 2, in very inefficient cases.