Fwd: [Gasification] Chunking wood for small scale biochar production,fotos !

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---------- Forwarded message ----------
From: Erin Rasmussen <erin@trmiles.com>
Date: Tue, Jan 7, 2014 at 3:58 PM
Subject: Re: [Gasification] Chunking wood for small scale biochar production,fotos !
To: "Energies Naturals C.B." <energiesnaturals@gmx.de>, gasification@lists.bioenergylists.org
Cc: Discussion of biomass pyrolysis and gasification <gasification@lists.bioenergylists.org>

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Rolf's previous photos of the Jensen woodchoppers are here:
http://gasifiers.bioenergylists.org/uhlejensenchopper
- Erin Rasmussen
erin@trmiles.com

-----Original Message-----
From: Energies Naturals C.B. [mailto:energiesnaturals@gmx.de]
Sent: Tuesday, January 07, 2014 8:34 AM
To: gasification@lists.bioenergylists.org
Cc: energiesnaturals; Discussion of biomass pyrolysis and gasification
Subject: Chunking wood for small scale biochar production, fotos !

On Thu, 02 Jan 2014 01:43:37 +0100
energiesnaturals <energiesnaturals@gmx.de> wrote:

> Hello chunkers,
>
> For small manual chunking devices I cannot help much, but I see that there
is also some interest in more mecanized solutions.
>
> At least in Europe you can still find many of the old Jensen woodchoppers
with 6 and 12 cm long chunks produced and up to15 cm diameter.
>
> I remember putting a series of fotos on the list some years ago,
> perhaps on the bioenergy list.
>
> Have a good year!
>
> Rolf
>
>
>
>
> Enviado desde Samsung tabletDavid Coote <dccoote@mira.net> escribió:An
> inexpensive tool to chunk efficiently wood for small scale biochar
> production would be very handy. I have loads of waste woody biomass on
> my farm. There's no community scale biomass energy plants in the
> northern hemisphere sense in Gippsland (SE corner of Australia) so no
> local markets of this nature for the material. This may change in the
> next few years but in the interim I'd like to make some char as a
> weekend project. One of my nephews is a qualified boiler maker with
> tickets for various specialist welding techniques. He's interested in
> building a small char system. This would probably be similar to the
> popular 44 gallon drum with internal retort (so an indirect
> implementation) but using a better quality steel so a bit longer
> lasting. And we'll lag the drum, put a safety enclosure around it and so
on.
>
> One of the challenges of trying to do this beyond a hobby approach is
> chunking the material to be used for  combustion and char. I haven't
> got time to lovingly handcarve the feedstock into the appropriate size
> and form. Using an axe, saw, firewood splitter, bypass pruners would
> all be possible for different sized feedstocks (windthrow, prunings,
> thinnings, harvest residue etc) albeit labour intensive.  Something
> like an old chaff cutter would be very useful for some feedstocks. I
> think there are some commercial chunkers that would do what I want but
> they are prohibitively expensive
>
> David
>
>
>
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