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<DIV><FONT size=2 face=Arial>Dear Ben</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>The best way to solve a problem is to eliminate it
in the first place. :-)</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>Given that you have defined that you have a tar
free, cool, and dehumidified gas, what do you need a filter for in the first
place??? Most likely, such a process would have removed all particulates
also. Cotton cloth on a wire frame would make an adequate safety
filter.</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>Ceramic filters are great for water, and are
probably sized to remove particulates down to the 1-10 micron range. A 5 PSIG
pressure drop in a water system filter is insignificant. However, 5 PSIG vacuum
for a blower/suction system to move gas through such a filter would require a
head of about 11.5' of water gage, or say 138 Inches of water gage pressure
differential. That is hugely significant. If for no other reason than pressure
drop, you would not wish to consider a ceramic filter.</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>Best wishes,</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>Kevin</FONT></DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: black"><B>From:</B>
<A title=ben@mwt.net href="mailto:ben@mwt.net">Ben Hansen</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=Gasification@bioenergylists.org
href="mailto:Gasification@bioenergylists.org">Gasification@bioenergylists.org</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Wednesday, February 16, 2011 10:10
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> [Gasification] Ceramic Filter
Candles</DIV>
<DIV><BR></DIV>Hello Doug, Greg, Tom, and all of the other list members.
<DIV><BR></DIV>
<DIV>I do not post to this list much, but I enjoy reading it, it is very
helpful too me, thank you. </DIV>
<DIV><BR></DIV>
<DIV>I have been thinking about filtration of gas, and ways too do this.
Given a tar free gas, and the ability to cool and dehumidify it to a
reasonable degree; I am looking at ceramic filter candles, and wondering
with the large range of these that are available for water filtration if any
of these are suitable or more suitable for wood gas? </DIV>
<DIV><BR></DIV>
<DIV>As my work is on a small scale and on a budget, I am of course
looking for solutions that exist in industry that are easy to adopt rather
than coming up with something new.</DIV>
<DIV><BR></DIV>
<DIV>I appreciate any thoughts on this, and hope this is of interest.</DIV>
<DIV><BR></DIV>
<DIV>Benjamen H</DIV>
<DIV><BR></DIV>
<DIV><BR></DIV>
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