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<div class="moz-cite-prefix">Marc,<br>
<br>
On 12/15/2014 7:53 AM, Marquitusus wrote:<br>
</div>
<blockquote cite="mid:DUB127-W65D91FB4437548D75C842FA86F0@phx.gbl"
type="cite">
<div><u style="font-size: 12pt;">Last smoke to remove</u></div>
<div>At the very end of the process, when the char has been
already pirolised </div>
</blockquote>
I think you mean to say "when the char has been char-gasifier" or
"has been oxidized". Pyrolysis is only about converting the
biomass into charcoal, and you wrote that you already had char.<br>
<blockquote cite="mid:DUB127-W65D91FB4437548D75C842FA86F0@phx.gbl"
type="cite">
<div>and very little lefts, I had smoke. It was a different smoke,
very light and odorless, and lasts about 2 minutes. I suspect it
is the last remains of CO gases, </div>
</blockquote>
It cannot be CO gas because it is odorless and invisible. But it
could be something else that is mixed in with the last of the rising
CO gas. I have not experienced what you wrote about, but remember
that I seldom burn the remaining char. <br>
<blockquote cite="mid:DUB127-W65D91FB4437548D75C842FA86F0@phx.gbl"
type="cite">
<div>which are not enough to mantain the flame. Maybe the solution
is to open a third layer of secondary air entrance very near to
the bottom, as Crispin suggested?</div>
</blockquote>
I doubt that additional air would solve the problem because your
volume of rising gases is diminishing and the secondary air was
adequate before that happened. Additional air could cause even
more cooling (and dilution) of the gases that you are trying to
burn. I could be wrong, so if you conduct the experiment, please
tell us the results whatever happens. <br>
<br>
About getting the clean burn for your baking oven: The TLUD method
is unique because it does (almost) all the pyrolysis first (and that
means also that the char making was done first at the same time).
And the TLUD burning of the created pyrolytic gases CAN be made
quite clean-burning when done right. THEN you have the transition
that you are solving now. So THEN the unit shifts over to being a
charcoal burner that CAN be made to burn cleanly concerning
particulates (very little "smokey stuff" in charcoal), and we hope
with low CO, but even if the CO level is high, that CO is odorless
so it will not impact the exposed bakery goods in the oven. <br>
<br>
As I said, in this way the TLUD aspects (including sequence) of
combustion are truly UNIQUE. But it does require that the unit is
properly made and operated, and not abused with some damp fuel,
etc. But TLUD heat sources CAN give you what you want.<br>
<br>
Maybe someday there will be bakery products labeled something like:
<br>
"Baked the TLUD way!!"<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>
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