[Digestion] Digestion Digest, Vol 14, Issue 13 Compressing Methane

[stan simon]

It makes sense to remove the CO2 while compressing the biogas, there is no 
sense in expending all that energy of compression on a spectator gas. Raw 
biogas is saturated with H2O therefore compression will produce rain inside 
your system, -  therefore it needs to be dried.

 The process you describe is being done at Haubenschild farm in Minnesota, 
also at least one location in Sweden.  The liquefaction of Methane is 
possible, there are some commercial vehicles that use this as a source of 
fuel.  The obvious advantage is the greatly increased density of the fuel.




----- Original Message ----- 
From: <digestion-request at listserv.repp.org>
To: <digestion at listserv.repp.org>
Sent: Wednesday, August 29, 2007 11:00 AM
Subject: Digestion Digest, Vol 14, Issue 13


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> Today's Topics:
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>   1. Re: Compressing Biogas into a Tank (gp baron)
>   2. R?p. : Re:  Compressing Biogas into a Tank ( Terrence Sauv? )
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> ----------------------------------------------------------------------
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> Message: 1
> Date: Wed, 29 Aug 2007 06:02:30 -0700 (PDT)
> From: gp baron <gpbaron4091 at yahoo.com>
> Subject: Re: [Digestion] Compressing Biogas into a Tank
> To: digestion at listserv.repp.org
> Message-ID: <877502.84917.qm at web54012.mail.re2.yahoo.com>
> Content-Type: text/plain; charset=iso-8859-1
>
> Can biogas be compressed, using a regular air compressor, into a tank? As 
> biogas is 60% methane (CH4), would it have adverse reactions with oil in 
> an air compressor the way acetylene (C2H2) would?
>
>  I have seen biogas stored in bladders, huge rubberized bags and 
> telescoping / floating metal tanks. I also remember some discussion in 
> this forum that biogas can be compressed and even be liquefied. These 
> options, however, are too bulky, non-transportable, complex and expensive.
>
>  If biogas can be compressed using regular air compressors into a 
> stainless steel compressed air tank (if necessary) to minimize / avoid 
> corrosion -- it would be easier to use say for cooking, lighting, heating, 
> etc. The tank can be re-filled when needed and brought to where the gas 
> will be used. We can have a simple and practical way to make better use of 
> this fuel.
>
>  Kindly share any information and/or experience you have. Thank you in 
> advance.
>
>  Gerry
>  - -
>  Gerardo P. Baron
>  Philippine (Home Biogas System)
>  Email: gpbaron4091 at yahoo.com
>  Phone: +63 927 407 1142
>
>
> ------------------------------
>
> Message: 2
> Date: Wed, 29 Aug 2007 09:46:59 -0400
> From: " Terrence Sauv? " <tsauve at alfredc.uoguelph.ca>
> Subject: [Digestion] R?p. : Re:  Compressing Biogas into a Tank
> To: <gpbaron4091 at yahoo.com>
> Cc: Digestion at listserv.repp.org
> Message-ID: <46D54093020000A800004697 at alfredc.uoguelph.ca>
> Content-Type: text/plain; charset=UTF-8
>
> Hi Gerry.
> Dr. Les Gornall ( Practically Green) uses a compressor to mix his digester 
> and compress the biogas to some extent ( a few bars if I recall ) for the 
> generator pressure regulators. Ask him what are his condensation-hydrogen 
> sulfide removal system and what type of compressor he uses. He is big time 
> with Ajax sour gas engines. He might now what type of equipment the oil 
> and gas industry uses to compress sour gas before refining.
>
> http://dialspace.dial.pipex.com/town/terrace/ae198/digesters.html
> http://dialspace.dial.pipex.com/town/terrace/ae198/index.shtml
>
> Good luck,
>
>
> ______________________________________
> Terrence Sauv?, B.Eng Bioresource
> Field Research Assistant
> Recherche et Transfer de Technologie
> Alfred Campus - University of Guelph
> 31 St. Paul Street, P.O. Box 580
> Alfred, Ontario, K0B 1A0, CANADA
> Tel.: 613-679-2218 x602
> Fax: 613-679-2420
> E-mail: tsauve at alfredc.uoguelph.ca
>>>> gp baron <gpbaron4091 at yahoo.com> 29/08/07 9:02 >>>
> Can biogas be compressed, using a regular air compressor, into a tank? As 
> biogas is 60% methane (CH4), would it have adverse reactions with oil in 
> an air compressor the way acetylene (C2H2) would?
>
>  I have seen biogas stored in bladders, huge rubberized bags and 
> telescoping / floating metal tanks. I also remember some discussion in 
> this forum that biogas can be compressed and even be liquefied. These 
> options, however, are too bulky, non-transportable, complex and expensive.
>
>  If biogas can be compressed using regular air compressors into a 
> stainless steel compressed air tank (if necessary) to minimize / avoid 
> corrosion -- it would be easier to use say for cooking, lighting, heating, 
> etc. The tank can be re-filled when needed and brought to where the gas 
> will be used. We can have a simple and practical way to make better use of 
> this fuel.
>
>  Kindly share any information and/or experience you have. Thank you in 
> advance.
>
>  Gerry
>  - -
>  Gerardo P. Baron
>  Philippine (Home Biogas System)
>  Email: gpbaron4091 at yahoo.com
>  Phone: +63 927 407 1142
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> Beginner's Guide to Biogas
> http://www.adelaide.edu.au/biogas/
> http://info.bioenergylists.org
>
>
>
>
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> End of Digestion Digest, Vol 14, Issue 13
> *****************************************
>