I believe this would be a good application for the reformer that I'm working
on, since it's primary purpose is to use the water laden "smoke" and combine
with C for CO and H maximization.
Toby Seiler
Seiler Technical
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Sent: Thursday, February 23, 2012 1:00 PM
Subject: Gasification Digest, Vol 18, Issue 20
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Today's Topics:
1. Charcoal conversion efficiencies (David Coote)
2. Re: Charcoal conversion efficiencies (Tom)
3. Re: Charcoal conversion efficiencies (Jeff Davis)
Thanks, Tom. Certainly an easy technique to set up. The smoke produced
might make this is a difficult technique to use in any quantity near
towns in Australia.
On this topic, can anyone point me at a good reference on charcoal
making that covers for a range of approaches parameters like cost,
conversion efficiency and characteristics of charcoal produced?
Thanks
David
> Today's Topics:
>
> 1. CHARCOAL PYROPILE (Thomas Reed)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Tue, 21 Feb 2012 15:41:01 -0500
> From: Thomas Reed<[email protected]>
> To: Discussion of biomass pyrolysis and gasification
> <[email protected]>
> Cc: Discussion of biomass pyrolysis and gasification
> <[email protected]>
> Subject: [Gasification] CHARCOAL PYROPILE
> Message-ID:<[email protected]>
> Content-Type: text/plain; charset="us-ascii"
>
> Dear Anand and All:
>
> Depending on the type of charcoal needed, you don't need a kiln at all. the
> biomass should have a moisture content less than 20% and cut into small
> enough pieces so you can make a reasonably dense pile. (If you have a pile
> of slash, resulting from cutting a tree down, our brush saw attachment for
> chain saws will cut limbs up to 2-1/2" in diameter as small as you want the
> charcoal pieces).
>
> If you make a pyramid of scrap biomass (sticks, twigs, chips, pellets, cobs,
> ...) and light it ON TOP, the cellulose will form a combustible gas, leaving
> about 20% charcoal from the lignin. The top layer of charcoal will ignite
> the next layer, and each layer. Until allis converted to charcoal, the rising
> deoxygenated gases protecting the charcoal layers above.
>
> If you put wet newspaper under the pile, when the last layer is converted,
> the rising steam will quench the pile of charcoal. I call this a CHARCOAL
> PYROPILE.
>
> Depending on the moisture content of the biomass pile, the temperature of the
> charcoal will reach 500-700C. I believe HughMcLaughlin said it was partially
> activated, but I hope he'll comment.
>
> I hope that farmers in particular will develop this method for converting
> waste biomass to valuable charcoal fertilizer.
>
> So no kiln needed.
>
> Tom Reed
>
>
>
>
>
> Thomas B Reed
>
>
>
Dear David
Of the biomass pyramid is relatively dry, lighting on top produces a short
yellow flame and very liitle smoke unlee the wind is blowing.
Take some pics and post them.
Tom Reed
>From Tom Reed
AKA
Dr Thomas B Reed
508 353 7841
Www.Woodgas.com
On Feb 22, 2012, at 6:19 PM, David Coote <[email protected]> wrote:
> Thanks, Tom. Certainly an easy technique to set up. The smoke produced might
> make this is a difficult technique to use in any quantity near towns in
> Australia.
>
> On this topic, can anyone point me at a good reference on charcoal making
> that covers for a range of approaches parameters like cost, conversion
> efficiency and characteristics of charcoal produced?
>
> Thanks
>
> David
>
>> Today's Topics:
>>
>> 1. CHARCOAL PYROPILE (Thomas Reed)
>>
>>
>> ----------------------------------------------------------------------
>>
>> Message: 1
>> Date: Tue, 21 Feb 2012 15:41:01 -0500
>> From: Thomas Reed<[email protected]>
>> To: Discussion of biomass pyrolysis and gasification
>> <[email protected]>
>> Cc: Discussion of biomass pyrolysis and gasification
>> <[email protected]>
>> Subject: [Gasification] CHARCOAL PYROPILE
>> Message-ID:<[email protected]>
>> Content-Type: text/plain; charset="us-ascii"
>>
>> Dear Anand and All:
>>
>> Depending on the type of charcoal needed, you don't need a kiln at all. the
>> biomass should have a moisture content less than 20% and cut into small
>> enough pieces so you can make a reasonably dense pile. (If you have a pile
>> of slash, resulting from cutting a tree down, our brush saw attachment for
>> chain saws will cut limbs up to 2-1/2" in diameter as small as you want the
>> charcoal pieces).
>>
>> If you make a pyramid of scrap biomass (sticks, twigs, chips, pellets, cobs,
>> ...) and light it ON TOP, the cellulose will form a combustible gas, leaving
>> about 20% charcoal from the lignin. The top layer of charcoal will ignite
>> the next layer, and each layer. Until allis converted to charcoal, the
>> rising deoxygenated gases protecting the charcoal layers above.
>>
>> If you put wet newspaper under the pile, when the last layer is converted,
>> the rising steam will quench the pile of charcoal. I call this a CHARCOAL
>> PYROPILE.
>>
>> Depending on the moisture content of the biomass pile, the temperature of
>> the charcoal will reach 500-700C. I believe HughMcLaughlin said it was
>> partially activated, but I hope he'll comment.
>>
>> I hope that farmers in particular will develop this method for converting
>> waste biomass to valuable charcoal fertilizer.
>>
>> So no kiln needed.
>>
>> Tom Reed
>>
>>
>>
>>
>>
>> Thomas B Reed
>>
>>
>>
>
>
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On Thu, 2012-02-23 at 10:19 +1100, David Coote wrote:
> On this topic, can anyone point me at a good reference on charcoal
> making that covers for a range of approaches parameters like cost,
> conversion efficiency and characteristics of charcoal produced?
David,:
COMPARING SIMPLE CHARCOAL PRODUCTION TECHNOLOGIES
FOR THE CARIBBEAN
<http://www.cd3wd.com/cd3wd_40/vita/charcprd/en/charcprd.htm>
Simple technologies for charcoal making
<http://www.fao.org/docrep/x5328e/x5328e00.htm>
Industrial charcoal making
<http://www.fao.org/docrep/x5555e/x5555e00.htm#Contents>
You might need one of these:
Mini Skyline
<http://www.backwoodshome.com/articles2/deaton0601.html>
Jeff
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