Top-lit updraft kiln (TLUD)

Vithusa Biochar Kiln

Vuthisa Technologies in South Africa have been working on improving the Portable Metal Kiln Charcoal Making Method and using a retort design to reduce emissions and improve efficiency making charcoal.

They have a great description with lots of detail on their web site: http://vuthisa.com/biochar/
as well as a Google Group:
https://groups.google.com/forum/?hl=en-GB&fromgroups#!forum/portable-kiln

In short the system is composted of an outer drum, often fabricated of sheet steel enclosing an inner set of 30 gallon drums.

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From DrReddystoves
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This is a very simple Biochar TLUD kiln recently designed for Sarada Mutt (Holy Mother) named as HOLY MOTHER BIOCHAR KILN http://biocharkiln.blogspot.com/, at Almora, Uttarakhand, India. Bricks and clay is used in the construction. This is a TLUD kiln. The biomass is to be added continuously as the fire continuous. The person adding the biomass to the kiln should be cautious and also use a long stick to keep away from the fire while adding the biomass. The primay air source at the bottom should be open as long as biomass is being added. As the biomass pyrolysis happens it occupies less space and more biomass can be added. It is convenient to operate during calm days i.e., less windy days. As the biomass reaches the level just below the secondary air, the process of adding the biomass should be stopped. The primary air inlet should be closed completely. After waiting for some time water should be sprinkled to extinguish the embers (quench). The biochar can be collected immediately or after some time. This is the simplest of the process of using the wasted / waste biomass to convert into biochar. Here pine needles are used for converting into biochar. Pine needles management is a big task in these parts of Himalayas, as often they lead to forest fires destroying many trees.

Holy Mother Biochar Kiln - Design by Dr. N. Sai Bhaskar Reddy, declared as Open Knowledge / OHANDA
http://okgeo.org | http://ohanda.org

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Hugh McLaughlin, PhD, PE, Alterna Biocarbon Inc.

As the world of biochar expands, the need for definitive research to answer core questions grows. One such question is “What is the role of adsorption and when does it make a pivotal difference in growing situations?” Answering those questions has been hampered by the historical absence of adsorption as a monitored property in soils and soil components (as compared to CEC) and the lack of a reliable method to create low and high adsorption biochars. While there is little that can be done about the former situation, the later may have a fairly facile solution, which will be presented here.

See the all new 2012 instructions attached:
http://www.biochar.bioenergylists.org/files/ican_weber_conversion.pdf

Jock Gill, It's Summer!

See the attached pdf file for printable Char-B-Que Instructions in Gorgeous Full Color Detail!

Art Donnelly, SeaChar.Org June, 2010

It was not quite 9 months ago, when I sent out an email to a small group of collaborators, with a Subject line that asked the question: "How do we get biochar stoves to Central America?" Of course, like the punch line to the old vaudeville joke, the answer is "lots of hard work". I could not have imagined 9 months ago was how rewarding all that work would feel. I want to share that feeling with all of you.

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R. Diermair November, 2009

Attached as a Power Point file and a PDF is a nicely illustrated guide to creating a TLUD (top lit up-draft) biochar retort with two barrels. As he notes, understanding the TLUD is critical to getting reliable, clean take a look at our other TLUD References for more guidance.

Peter Hirst, Pony Farm in Temple, New Hampshire, on May 9, 2009.

Follow the link for some great video from the recent Biochar Roundtable at the Lodge at Pony Farm in Temple, New Hampshire, on May 9, 2009.

Pony Farm Biochar Workshop
Pony Farm Biochar Workshop

http://thinkingglobalactinglocal.com/biochar-workshop-may-9-2009.html

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A handy kiln for making charcoal from urban leaf litter
Appropriate Rural Technology Institute (ARTI), Pune, India www.arti-india.org

Single Barrel Charcoal Kiln

Single Barrel Charcoal Kiln

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