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Ken, Rebecca and all,<br>
<br>
I consider it to be UNdesirable to make briquettes or pellets from
sawdust AND THEN ONLY PYROLYZE THEM to make charcoal.<br>
<br>
A. Wasting the energy to make the densified biomass fuel that will
not be used as biomass fuel.<br>
<br>
B. Wasting the pyrolytic gases when turning densified biomass into
char / charcoal.<br>
<br>
Note: Pellets are great fuel for TLUDs AND YOU STILL GET THE
CHARCOAL. If sawdust is being densified, the densified product can
be useful.<br>
<br>
Rebecca, I do not know of any "small, reasonable size" method to
make raw sawdust directly into charcoal. Of course it can be done
in scientific laboratories, and probably in some expensive
pyrolyzer-style large burners at some sawmill that wants heat, or in
some fluidized bed gasifier that sprays in the sawdust (utilizing
its small particle size). I hope that somebody has a brilliant idea
someday for a small inexpensive method, but not being done yet, as
far as I know.<br>
<br>
Paul<br>
<pre class="moz-signature" cols="72">Doc / Dr TLUD / Prof. Paul S. Anderson, PhD
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>
<div class="moz-cite-prefix">On 10/13/2016 9:11 AM, Ken Boak wrote:<br>
</div>
<blockquote
cite="mid:CAOqQ0iZU6RbXKnAyC8z4GaK1MqRCcjHO0G5vzfqNKy=BujtXBQ@mail.gmail.com"
type="cite">
<div dir="ltr">Rebecca
<div><br>
</div>
<div>There's a lot of activity in the Ukraine - using relatively
low cost wood waste extruders sources from China (Alibaba
"pini kay" ) </div>
<div><br>
</div>
<div><a moz-do-not-send="true"
href="http://piroliz.org/news/2013-12-23-16-50-12/eng">http://piroliz.org/news/2013-12-23-16-50-12/eng</a><br>
</div>
<div><br>
</div>
<div>The briquettes are made first from raw wood waste - then
pyrolysed in a kiln. This is an alternative method to
pressure forming briquettes from charcoal dust with starch
binder - which might be more appropriate on a village scale.</div>
<div><br>
</div>
<div>I'm currently investigating both methods to see if I can
find a cheaper method of creating the pressures needed- using
solar generated dc power - but without using a $3500 machine
from China.</div>
<div><br>
</div>
<div>I can produce 50kN with a 1000W dc motor (forklift pump
motor) and then a hydraulic 50 tonne bottle jack ($50 China)
to step this up to 500kN. This is about 15.5MPa across a 64mm
diameter briquette.</div>
<div><br>
</div>
<div><br>
</div>
<div><br>
</div>
<div>Ken</div>
<div><br>
</div>
<div><br>
</div>
<div><br>
</div>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On 13 October 2016 at 14:57, Crispin
Pemberton-Pigott <span dir="ltr"><<a
moz-do-not-send="true"
href="mailto:crispinpigott@outlook.com" target="_blank">crispinpigott@outlook.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div link="blue" vlink="purple" lang="EN-CA">
<div class="m_-2790845060442359655WordSection1">
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif">Dear
Rebecca</span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif"> </span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif">Not
that I have heard of.<span class="HOEnZb"></span></span></p>
<span class="HOEnZb"><font color="#888888">
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif">Crispin</span></p>
</font></span><span class="">
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif"
lang="EN-US"> </span></p>
<p class="MsoNormal"> </p>
<div>
<div>
<p class="MsoNormal"><span
style="font-family:"Arial",sans-serif;color:black">Dear
Chris, Crispin,</span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-family:"Arial",sans-serif;color:black">Do
you know of a successful project where wood
sawdust is converted to charcoal and the
charcoal processed into briquettes?</span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-family:"Arial",sans-serif;color:black">Regards,</span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-family:"Arial",sans-serif;color:black"> </span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-family:"Arial",sans-serif;color:black">Rebecca
Vermeer</span></p>
</div>
</div>
</span></div>
</div>
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