[Gasification] Ceramic Filter Candles

[Kevin]

Dear Ben

The best way to solve a problem is to eliminate it in the first place. :-)

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.

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.

Best wishes,

Kevin
  ----- Original Message ----- 
  From: Ben Hansen 
  To: Gasification at bioenergylists.org 
  Sent: Wednesday, February 16, 2011 10:10 PM
  Subject: [Gasification] Ceramic Filter Candles


  Hello Doug, Greg, Tom, and all of the other list members.  


  I do not post to this list much, but I enjoy reading it, it is very helpful too me, thank you.  


  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?  


  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.


  I appreciate any thoughts on this, and hope this is of interest.


  Benjamen H






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