[Stoves] Comments about T-LUDs: Types of carbon

[psanders at ilstu.edu]

Frank and all,

Your comments about carbon arise questions to me.

Quoting frank at compostlab.com:
> As I see it there are two types of carbons left in the ash. One 
> carbon that is
> left from the unburned wood and the other carbonates.
      [and]
> Ash, even in wood, is much more than just unburned organic material.

I could easily be wrong, but to me ash is the absolutely inert, 
non-combustible
residuals from combustion, and does NOT contain unburned organic 
material. Silica and clinkers etc are all part of the inert "ash."  
Maybe my terms are
incorrect.

Is a "carbonate" inert, meaning, are the carbon atoms LOCKED into 
carbonates? If so, then carbon-in-carbonate is 
carbon-not-available-for-combustion.

Hydrocarbons are the backbone of combustion.  And there is
carbon-in-unattached-form. (Is that pure carbon, or fixed carbon or elemental
carbon, or all of those names?)    The unattached carbon also has great fuel
value.

I know that good-quality char (quite pure carbon) can be pulverized and 
added to
soil as a great soil builder.  But is that true for "carbonates" also?

Yes, this relates to T-LUDs because those devices deal with the various 
forms of
carbon compounds and element at distinct times in the T-LUD pyrolytic
gasification.

Paul


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