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<div class="moz-cite-prefix">Kobus,<br>
<br>
That is great work. Very interesting.<br>
<br>
I do not join so many specialty groups, even when interested. I
much prefer that the discussions are open to all via main
Listservs such as Stoves.<br>
<br>
I hope you will prepare something that could go onto the Stoves
and/or Biochar and/or DrTLUD websites that anyone can access
without joining.<br>
<br>
Paul<br>
<pre class="moz-signature" cols="72">Paul S. Anderson, PhD aka "Dr TLUD"
Email: <a class="moz-txt-link-abbreviated" href="mailto:psanders@ilstu.edu">psanders@ilstu.edu</a> Skype: paultlud Phone: +1-309-452-7072
Website: <a class="moz-txt-link-abbreviated" href="http://www.drtlud.com">www.drtlud.com</a></pre>
On 10/1/2012 8:10 AM, Kobus Venter wrote:<br>
</div>
<blockquote
cite="mid:1349097000.55820.YahooMailNeo@web140002.mail.bf1.yahoo.com"
type="cite">
<div style="color:#000; background-color:#fff; font-family:times
new roman, new york, times, serif;font-size:12pt">
<div>Paul, Tom, Ron, Alex, Crispin, AD and all,<br>
</div>
<div><br>
</div>
<div style="color: rgb(0, 0, 0); font-size: 16px; font-family:
times new roman,new york,times,serif; background-color:
transparent; font-style: normal;">Paul, you have summarized it
well, we'll have to see if the actual is close to the
estimate. Yes I am aware that biochar needs to be light and
rigid yet easily crushed and adsorbtion capacity tests would
need to be performed. I understand the basics of the TLUD well
and have also been referred to Hugh's toucan etc, although
admittedly I have never built one like that. As you may have
seen from my earlier pictures I needed to process a large
amount of biomass feedstock without incurring large
transportation costs, i.,e transporting feedstock to the kiln.
I was processing about 80 tons of 6 - 8 weeks dry feedstock
(invasive aliens aka Working for Water) in my most productive
month. Because of the non-uniform nature of the feedstock,
TLUD's were not considered and not sure if an upscaled TLUD
would have been up to the challenge. In my situation mobility
was paramount. The rugged and steep terrain required the 6
kilns to be transported in dissembled sections up the mountain
side on the back of a LDV (small truck). For biochar end use,
once assembled (with bolts, no welding) the Transportable Kiln
is fitted with flanges top and bottom (hammered into place), 3
sealable 55 gal drums are lowered and wedged in with central
cone to keep them in place. The kiln (along with the 3 x 55
gal drums) are rolled as one unit into position on preselected
leveled out terrain. The kiln and conical lid would typically
only be rolled 30 or 40 metres every 4 days or so to work
through the piles of timber. To extract the biochar the the
kiln is pushed over onto its side.</div>
<div style="color: rgb(0, 0, 0); font-size: 16px; font-family:
times new roman,new york,times,serif; background-color:
transparent; font-style: normal;"><br>
</div>
<div style="color: rgb(0, 0, 0); font-size: 16px; font-family:
times new roman,new york,times,serif; background-color:
transparent; font-style: normal;">I hereby extend an
invitation to anyone on this list to join my Portable Kiln
Google Group <a class="moz-txt-link-freetext" href="http://groups.google.co.uk/group/portable-kiln">http://groups.google.co.uk/group/portable-kiln</a>
Just ask to join with your reason for joining - if I know your
name you probably don't have to give me a reason. I think Ron
and Yury are already members from this stove group. <br>
</div>
<div style="color: rgb(0, 0, 0); font-size: 16px; font-family:
times new roman,new york,times,serif; background-color:
transparent; font-style: normal;"><br>
</div>
<div style="color: rgb(0, 0, 0); font-size: 16px; font-family:
times new roman,new york,times,serif; background-color:
transparent; font-style: normal;">Have not had much feedback
from others because not many have built them yet, but I have
posted all my findings and even some kiln plans so everyone
gets off the ground with a standard kiln.</div>
<div style="color: rgb(0, 0, 0); font-size: 16px; font-family:
times new roman,new york,times,serif; background-color:
transparent; font-style: normal;"><br>
</div>
<div style="color: rgb(0, 0, 0); font-size: 16px; font-family:
times new roman,new york,times,serif; background-color:
transparent; font-style: normal;">Regards</div>
<div style="color: rgb(0, 0, 0); font-size: 16px; font-family:
times new roman,new york,times,serif; background-color:
transparent; font-style: normal;"><br>
</div>
<div style="color: rgb(0, 0, 0); font-size: 16px; font-family:
times new roman,new york,times,serif; background-color:
transparent; font-style: normal;">Kobus</div>
<div style="color: rgb(0, 0, 0); font-size: 16px; font-family:
times new roman,new york,times,serif; background-color:
transparent; font-style: normal;">*******************************************************************************************************************<br>
</div>
<div style="color: rgb(0, 0, 0); font-size: 16px; font-family:
times new roman,new york,times,serif; background-color:
transparent; font-style: normal;"><br>
<span></span></div>
<div style="color: rgb(0, 0, 0); font-size: 16px; font-family:
times new roman,new york,times,serif; background-color:
transparent; font-style: normal;">Dear Kobus and all, <br>
<br>
Retort: When 50/50 inner and outer amounts of fuel as Kobus
has mentioned: the Outer burning XX kg yields zero biochar;
Inside retort yields 20 to 30& of XX kg, net of 10 to 15%
of total fuel used. <br>
<br>
(Note: charcoal yields from inside a retort of greater than 25
or 30% indicate considerable volatile matter is in the
charcoal, which is not generally considered good for the
plants/soils. Beware of charcoal that is 40+% of original fuel
weight. It will burn in a charcoal stove probably with some
limited smoke, but is not good as biochar.) <br>
<br>
TLUD: One batch, expect about 20% yield by weight. Nearly
double the net weight output, and not needing double barrels,
etc. <br>
<br>
Fines are a result of size of feedstock. If making biochar,
fines are fine (pun intended). Or fines can be briquetted
quite easily if sold to the charcoal market. <br>
<br>
Biggest problem I see with many attempts to make TLUD-style
barrel-size charcoal makers is the poor quality of the lid or
top to allow in secondary air that goes to the concentrator
hole. If this sentence does not make sense to someone, then
that person has not studied the basics of TLUD operation. <br>
<br>
Users should start with small TLUDs (like McLaughlin's "1-G
Toucan" out of tincans - plans are on the web) so that they
know that the TLUD fires CAN and should be very clean burning.
There is no reason to have smoky TLUDs when using 200 liter
barrels unless using wet fuel or not yet adjusting the TLUD to
the fuel at hand. <br>
<br>
Paul </div>
<br>
<div style="font-family: times new roman, new york, times,
serif; font-size: 12pt;">
<div style="font-family: times new roman, new york, times,
serif; font-size: 12pt;"><br>
<br>
</div>
</div>
</div>
<br>
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</blockquote>
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