[Gasification] Charcoal Gasification No. 5

[doug.williams]

Hi Mark & Colleagues,

Thank you for this reference:

> Table 4 in this reference:  http://www.fao.org/docrep/X5328e/x5328e05.htm
> provides some data about different 'quality' chars.  The results there
> mostly parallel my own experience operating my volatiles afterburning
> charcoal retort:  http://gasifiers.bioenergylists.org/gallmeierretort

I have to say that we never bought charcoal to use in a charcoal gasifier, 
only to start new wood gasifiers, and they will crack any residue volatiles. 
Having said that, the volatiles released fill the fuel hopper in  a sealed 
system, and push by, and between air nozzles. This is why the throat, or 
restriction is located under the nozzles, so that all the gases are 
collected and pass through the collective base of the oxidation lobes. 
Basically the same will happen to high volatile charcoal, and why tar 
cracking is an asset in a rural situation.  The single nozzle charcoal 
gasifier cannot do this.

While cooling and cleaning depends on what facilities, and materials you can 
access, the basic design of the gasifier is the evolvement of a logical 
process. Of course others might think otherwise, but you can build a 
gasifier to meet required engine gas quality from the Fluidyne Archive 
www.fluidynenz.250x.com  Anniversary project. You can use your charcoal 
without any problems.

Doug Williams,
Fluidyne.