<div dir="ltr">Dear Friends<div><br></div><div>There is another solution and that is to put a small tar cracker at the base of the gasifier.</div><div><br></div><div>You have to inject some very hot air just above the grate. This early work was done by Mike Connor at Melbourne University.</div><div><br></div><div>You really cut down the amount of tar coming out of the gasifier thus cutting your waste water treatment requirements.</div><div><br></div><div>Also if you can breed the right bugs the small amount of tar you produce can then be composted</div><div><br></div><div>I am in Ethiopia but somewhere I have Mike students thesis. Mike has retired but I may be able to track him down.</div><div><br></div><div>Corner Peacocke also did some work on this and we used an external tar cracker using a mixture of hot air and hot steam. The higher the temp the lower the amount of air required.</div><div><br></div><div>Regards from the North of Ethiopia</div><div><br></div><div>Stephen Joseph</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Sat, Jan 16, 2016 at 3:17 PM, Paul Anderson <a href="mailto:psanders@ilstu.edu">psanders@ilstu.edu</a> [biochar] <span dir="ltr"><<a href="mailto:biochar@yahoogroups.com" target="_blank">biochar@yahoogroups.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<p>
Dear Gasification Listserv and Biochar Listserv,<br>
<br>
The excellent comment by James Joyce (below) did not reach the
Gasification readers. It only went to the Biochar readers.
Interesting for two reasons (overly simplified, but to make a
point):<br>
<br>
1. Gasification for power (engines) is what causes the problem of
contaminated waste water, but those readers did not see the
"solution offered". THEY are the people who could test and evaluate
the solution.<br>
<br>
2. Biochar production (for agriculture and carbon sequestration)
has been proposed to make a filter-char that is to be burned, which
is what biochar production is trying not to do. That is, char as
filter for wastes made by trying to burn all of the biomass to ash.<br>
<br>
Those of us who are subscribed to both lists will see the full
discussion. Let's hope that this is a functional solution.<br>
<br>
(Of course it is better if the nasty contents in the waste water
were not created in the process of making the electro-mechanical
power.)<br>
<br>
To James Joyce, I say "Thanks."<br>
<br>
Paul Anderson<br>
<br>
James Joyce wrote:<br>
</p><blockquote type="cite">
<div>
<p class="MsoNormal">Seems to me that the smallest foot print
treatment would be to filter the water through char, gravity
dewater and then dry the char to less than 30% moisture, then
combust it at over 1000 deg C in a chamber that maintains a 2
second residence time for the gases released from the
combustion. That will yield useful heat while destroying the
recalcitrant hydrocarbons. In locations with weather that does
not make solar or even bed drying viable, the process will
generate more than enough heat to run a heated air drier.<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u>After the past mess if dealt with,
such a process would probably only need to be run for a day a
week to treat scrubber water from storage tanks (i.e. never
put out to lagoons or open storage where it is of great risk
to the environment).<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u>The equipment required to do that
is far less complicated than the gasifiers themselves.<u></u><u></u></p>
<p class="MsoNormal">Regards,<u></u><u></u><u></u> <u></u>
</p>
<p class="MsoNormal">James Posted
by: James Joyce <a href="mailto:james@jamesjoyce.com.au" target="_blank"><james@jamesjoyce.com.au></a> </p>
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</blockquote>
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<pre cols="72">Doc / Dr TLUD / Prof. Paul S. Anderson, PhD
Email: <a href="mailto:psanders@ilstu.edu" target="_blank">psanders@ilstu.edu</a>
Skype: paultlud Phone: <a href="tel:%2B1-309-452-7072" value="+13094527072" target="_blank">+1-309-452-7072</a>
Website: <a href="http://www.drtlud.com" target="_blank">www.drtlud.com</a></pre>
<div>On 1/7/2016 10:45 AM, <a href="mailto:linvent@aol.com" target="_blank">linvent@aol.com</a>
wrote:<br>
</div>
<blockquote type="cite">
<div style="font-family:arial;color:black;font-size:10pt"><span></span></div>
<div> <font color="#000000" face="arial"><span style="font-size:small">Tom, </span></font></div>
<div><font color="#000000" face="arial"><span style="font-size:small"><span style="white-space:pre-wrap"> </span>Thanks
for the compliment and appreciation. There were hundreds of
"pot" trials using a wide variety of treatments,
extractions, etc. before the key process was accidentally
stumbled on. Other processes have evolved and include the
ability to take sea-water to potable with a fraction of the
cost of distillation or RO. </span></font></div>
<div><font color="#000000" face="arial"><span style="font-size:small"><span style="white-space:pre-wrap"> </span>Assumptions
about the tar properties including specific gravity can be
quite misleading. </span></font></div>
<div><font color="#000000" face="arial"><span style="font-size:small"><span style="white-space:pre-wrap"> </span>One
aspect of how to deal with the produced water from a
gasifier is to give it the right type of compound definition
and once that is reached, it makes it much easier to treat
it. </span></font></div>
<div style="font-family:arial;color:black;font-size:10pt"><font face="arial">Sincerely,</font><br>
<div><font face="'Comic Sans MS',
sans-serif">Leland T. "Tom" Taylor</font></div>
<div><font face="Arial, Helvetica,
sans-serif">Thermogenics Inc. </font></div>
</div>
<div><br>
</div>
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