Hi Greg, & all It's interesting you mention:
>Bio Methane generally has to be scrubbed of CO2 and H2S, before it is >useable in any great amount, but, once the H2S and CO2 have been removed, >Bio Methane can be used just like NG (at lower pressure unless you use a >compressor to raise the pressure). I've started gathering info on Biogas, not for where we are now but for our planned future move, but I've not seen anything regarding scrubbing the gas. I had wondered about the need for it. I presume the scrubbing would be done using absorbent chemicals (trying really hard to remember my inorganic chemistry but it seems too long ago now!!! Lol) I'd like to know if there are any innovative solutions to the problem out there. Would water vapour in the gas cause problems & should it also be removed? Or is all this not needed when using it as a single domestic supply? I'd be interested in any comments. Best regards to all Malcolm -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Greg Harbican Sent: 21 July 2005 16:15 To: Biofuel@sustainablelists.org Subject: Re: [Biofuel] Propane - A"Bio" fuel? Not to cause a problem, but, most of the time, the fuel bought at stores is Propane ( sometimes MAPP gas or even Butane ) not NG. NG requires special handling procedures and compressors, that are not common except at NG terminals ( this is part of why NG powered cars are few and far between ). I worked security for several years at NG shaving operation, where they mixed propane with enough air, to bring it down to the same BTU values as NG, so it could be used in NG appliances. If they didn't do this, the orifice would have to be changed to one with a smaller opening. If propane was not mixed with air and the orifice was not one that had a smaller opening the pilot light in your stove or furnace would be close to 6 inches long ( instead of half an inch or so ), and you would burn out your stove. Now, if you lower the pressure of the propane going to the appliance, you can achieve much the same effect. The whole idea, is to deliver the same amount of BTU's to the burn area just outside of the orifice, over the same amount of time. BioMethane generally has to be scrubbed of CO2 and H2S, before it is useable in any great amount, but, once the H2S and CO2 have been removed, BioMethane can be used just like NG ( at lower pressure unless you use a compressor to raise the pressure ). Greg H. _______________________________________________ Biofuel mailing list Biofuel@sustainablelists.org http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Search the combined Biofuel and Biofuels-biz list archives (50,000 messages): http://www.mail-archive.com/biofuel@sustainablelists.org/
