Benjamen,
We have used ceramic fiber filters from Glosfume (http://www.glosfume.com/ ). We have found that when you install them correctly, adequately cool the gas (to below 300C), and distribute the gas evenly to the filters, they work extremely well. They behave very much like well designed bag filters on atmospheric dusts. High temperature ceramic filters have been used by organizations making syngas for chemical conversions. We tested the early ones in the 1990s. I am sure they have improved. I don't know the details but I understand that ceramic filters have been used as sites for chemical reactions between the syngas and injected substances. Kind regards, Tom Miles www.gasifiers.bioenergylists.org From: [email protected] [mailto:[email protected]] On Behalf Of Ben Hansen Sent: Wednesday, February 16, 2011 6:11 PM To: [email protected] 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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