Re: flash carbonization of biomass

[Carefreeland@aol.com]

Ron says:
    I would still like to hear more from anyone on the subject of higher
pressure as applied to small (order of 1 kg per hour)? CM operations.  I am
leaning against pressurization and retorts, but for reasons of poor
controllability.  Can a retort approach be done at very small scale with
rapid control response and low cost?

Ron
    
Dan's reply:
    I've been building up a supply of "tincanium" for experiments.  My first 
was going to be a idd stove with the aluminum base experiment.  I like this 
challenge even better, and have a couple of empty 16oz. disposable propane 
cylinders for small retorts. 
    I could use any ideas on how to configure this.  Right now my first 
instinct is to make the cylinder upside down and vertical suspended within a 
large tin can.  The top (bottom) of the cylinder would be cut and open like a 
hinged pot lid.  The bottom (top) would have a drilled out valve with some 
kind of burner to heat the retort first, then residual heat would go to the 
pot on top of the retort. 
    The devise would need a pressure relief system, probably in the loading 
door latch.  I wood imagine that any wood that fit in the retort could be 
used. 
    The bottom of the can would need a small combustion area to prime the 
retort.  possibly using a small measured amount of kindling.  Could we idd 
this part too?  By having two parts that produced heat, the charcoal from the 
first process would help the second ignite and reach combustion temp.  The 
burner could be designed to receive gas from both bottom or top.
      Complex, but could be an efficient charcoal producer.  This is what I 
call "cutting edge research" or maybe just a "shot in the dark."
    Well, just a few stray thoughts on a way to approach this. 
    Comments? 
                  Daniel Dimiduk

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