[Stoves] Biochar makers that are low emission, fire safe, and "look like" a stove, oven or heater

[Anderson, Paul]

Doc / Dr TLUD / Paul S. Anderson, PhD
Exec. Dir. of Juntos Energy Solutions NFP
Email:  psanders at ilstu.edu<mailto:psanders at ilstu.edu>       Skype:   paultlud
Phone:  Office: 309-452-7072    Mobile: 309-531-4434
Website:   www.drtlud.com<http://www.drtlud.com>

From: Paul Taylor <potaylor at bigpond.com>
Sent: Thursday, January 17, 2019 6:14 AM
To: Anderson, Paul <psanders at ilstu.edu>; biochar at yahoogroups.com; Discussion of biomass cooking stoves <stoves at lists.bioenergylists.org>
Cc: 'Hans-Peter Schmidt' - Switzerland - Nepal <schmidt at ithaka-institut.org>
Subject: Biochar makers that are low emission, fire safe, and "look like" a stove, oven or heater

Hi all: I am in Australia confronted with the problem of dealing with the issue of excess fuel load in forests in a hot and warming environment. Forest services have rejected in some areas any use ever of pre-burns because of high risk that they get away. People who would like to treat the fuel as a resource for making biochar on their own property are confronted with regulations that prevent any fire device except a stove (cooking or heating).

Ethos and Aprovecho have been about developing and perfecting stoves (that sometimes make biochar).  I would like to develop and refine devices that make biochar and sometimes perform functions of a stove or heater, and importantly look like, a stove or heater to the EPA when they come around.  An important scale level would be 55g drum size reaction vessel (or outer envelope), optimized to make biochar with low smoke and VERY low fire danger, but passing the test that they are stove, firebox, heater or oven.  The dominant fuel that the device should be receptive to is limb wood, such as arm sized.

The open flame-cap devices would clearly be perceived as a fire threat, and rightly so in high fire danger environments. Paul Anderson's 4C device could be modified and refined to be safer, and to pass muster as a fire place, stove or heater, but serve primarily to make good quantities of biochar.   Is anybody working in this direction or seen good designs?

Paul A,  what refinements would you like to have present in the 4C when it is questioned by the EPA.

Paul
--
Paul Taylor, PhD
Ed/Author: The Biochar Revolution
Transforming Agriculture and the Environment
http://www.thebiocharrevolution.com
http://www.ithaka-institut.org/en
http://www.biochar-journal.org/en
Phone, US: 1-415-233-7366
Skype: potaylor



On 12/22/18, 4:43 AM, "Anderson, Paul" <psanders at ilstu.edu> wrote:
fficult for clean air agencies to regulate them for health reasons. More and more data says ultrafine particulate emissions are linked to an incredible array of human diseases and health consequences. With the need to sequester as much carbon into the soils as global warming suggests, it will be incredibly difficult to prevent mankind from endangering itself with a health consequences of particulate emissions.

With your experience on these quick and dirty flame cap kilns, what is your "sense of appreciation" for them.

Norm

On Tue, Dec 4, 2018 at 5:07 PM Paul Taylor <potaylor at bigpond.com> wrote:
With a vortexing flame cap mode and incremental fuel feed at the completion of TLUD mode there is no need for other primary air entering from the bottom.  Unless some further oxidation is desired for enhanced functional groups on the char, open PA at the bottom presents the insecurity of losing some char.  If a portion of the flame cap exits the down-drafting vortexing mode, or the TLUD develops common internal convection loops (such as up the center and down the colder walls), easily enhanced by chaotic
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