[Stoves] Burning coal in cookstoves

[Paul S. Anderson]

Quoting IPC <ipcipc at mweb.co.za>:

> And "wood ash captures the sulfur in the ash." I hadn't thought of that, but
> of course it must be the alkalis and alkaline earths in the wood, making
> sodium/potassium/calcium/magnesium sulfates - the same process used
> industrially to remove SOx from coal-fired stack emissions.  We tend to
> forget how alkaline wood ash is - but the alkalinity is an essential part of
> regeneration after wildfires.

In a TLUD device, there is no (or very little) loose ash after the 
pyrolysis. The "ash" is in with the resultant char or coke.

BUT, what about intentionally placing some woodash (loose or made 
granulated) in
with the raw fuel so that the woodash is present when the gases (containing
sulfur) rise upward through the char/coke bed?  Not needed when the fuel is
biomass, but perhaps useful when the fuel is coal.

Paul


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