[Stoves] Charcoal kilns in Namibia

[scda2 at t-online.de]

Dear,
on page 19 of this report this should be corrected referring to the 
"adam-retort" kiln:
 
1) "Need of water to cool down the charcoal which leads to lower charcoal 
quality or
needs additional drying"
There is no need of water for cooling, cooling is preferable done during 
night, the wood chamber is covered by a metal sheet and some removable 
extra lid for insulation. Once the insulation lid is removed, cooling 
happens also without water.


2) "Pyrolysis gas are not burned completely (only about 50% are)"
No, most of the pyrolysis gas is burnt!
 
3) "Pyrolysis gas are burned without heat recovery"
The heat from the  burnt wood gas is passing under the wood chamber and its 
metal plate and is pushing carbonization, that heat recovery isn't it. The 
heat is used for another process, to accelerate the carbonization 
process...
best
Chris ADAM
 
https://www.biocoal.org/adam-retort-kiln/
 
 
 
 
 
 
-----Original-Nachricht-----
Betreff: [Stoves] Charcoal kilns in Namibia
Datum: 2018-08-22T20:06:18+0200
Von: "Cookswell Jikos" <cookswelljikos at gmail.com>
An: "Discussion of biomass cooking stoves" 
<stoves at lists.bioenergylists.org>
 
 
 
For those interested in charcoal making for cooking as well - here is a 
very in-depth study of some kilns in Namibia - 
https://ncanamibia.com/wp-content/uploads/2018/03/Mobile-Retort-Report.pdf
<https://ncanamibia.com/wp-content/uploads/2018/03/Mobile-Retort-Report.pdf>
 
Best, 
 
Teddy Kinyanjui
Sustainability Director
 


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