[Stoves] [Biochar] Ceramic Philosophy: Request for Pyrolysis Biochar Stove Designs

[Joshua Guinto]

Dear Gabriel

I'm interested in what you do for ageoecoloegy and how stoves Will fit into
your work.

We at Bahay Teknik is doing a lot with clay and we formulate our own recipe
to produce firebricks for our rocket stoves. We also make variations of
recipes for different types of bricks depending upon the required functions.

Our rocket.stoves is actually a hybrid of a rocket and a TLUD gasifier.
With pili nut shells which we have in abundance in my region, the stove
runs on a gasifier mode during the first fuel load and then switch to
rocket thereafter. It can run on wood sticks, wood pellets, holey
briquettes and pili (or small size nut) shells. Temperature at the fire
chamber could go as high as 700 degrees Celsius, thus producing a good
quality brochar.
We can harvest the biochar with ease by simply dumping the hot char in a
pan of water.

You may visit our Facebook page Bahay Teknik. Our manager Sandino will be
glad to assist you.

Best regards

Jed Guinto

On Thu, 9 Feb 2023, 5:54 am Ronal Larson, <rongretlarson at comcast.net> wrote:

> Gabriel and ccs (adding the stoves list (the predecessor “mother” of the
> biochar (terra preta) group you started with.  [note different address for
> Paul]
>
> Welcome as a first poster.  We need more potters on this list - as so many
> cook stoves are presently being made by potters.
>
> I write as husband of a potter.  I have tried to make several clay TLUDs.
> I failed.   Cracked. Pretty quickly   But I still think that char-making
> can be done in ceramic stoves.
> There is some clay being sold with paper as an ingredient that is claimed
> to have minimal expansion as heated up (the exhaust gas temperatures are
> pretty impressive.  I have never heard of anyone using such clay.  I
> haven’t)
> The top of a TLUD will get up to cone 022 (dull red) in a minute or so,
> while the bottom is still room temperature.  Having the cylinder be
> segmented will help, but you also are trying to control air.  Not like
> heating up in a kiln.
>
>
> Kevin McLean has had considerable charcoal-making success with unfired
> large un-fired clay “bricks."  See his Sun24 website. The firing as a stove
> will do some hardening of the clay.  Too early to get lifetime data with
> Kevin’s nice low-cost approach.
>
> I wouldn’t worry too much about Terra Preta.  Very valuable discussions
> around 2000-2010 - but no connection to pottery.
>  (One exception - I’ve seen some literature that the ancient Amazonians
> also obtained a product like that coming from a present day low-temperature
> approach called HTC, they using big clay urns)
> The sites www.biochar-international.org and www.biochar-us.org will give
> some good information.  Especially on webinars - some have been on stoves.
>
> Ron
>
>
> On Feb 8, 2023, at 12:45 PM, Teel, Wayne <teelws at jmu.edu> wrote:
>
> Gabriel,
>
> Get in contact with Paul Anderson, , and he will help you from there.  He
> is a regular and valuable contributor to this list.
>
> Wayne
>
> *From:* main at Biochar.groups.io <main at Biochar.groups.io> *On Behalf Of *Gabriel
> Reed
> *Sent:* Wednesday, February 8, 2023 12:21 PM
> *To:* main at Biochar.groups.io
> *Subject:* [Biochar] Ceramic Philosophy: Request for Pyrolysis Biochar
> Stove Designs
>
> *CAUTION: *This email originated from outside of JMU. Do not click links
> or open attachments unless you recognize the sender and know the content is
> safe.
> ------------------------------
>
> Hello All,
>
> First post in this group.
>
> I'm a ceramic philosopher doing some research here in Cali, Colombia and
> am interested in building pyrolysis stoves for an agroecology project
> called Fundcación Yūtopialab. If anyone has resources they can point me to
> specifically on the topic of Terra Preta and/or especially stove designs
> that would be greatly appreciated!
>
> Cheers,
>
> Gabriel
>
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