[Digestion] Compressing of biogas

[Reuben Deumling]

Can you say a bit more about
- why separating out the CO2 is ruled out? and
- why if methane 'does not like to be compressed' so many other similar
gases are compressed regularly?

Perhaps I'm missing something.
I do appreciate the transport ideas without compression or a pipeline.

Reuben Deumling


On Tue, Nov 23, 2010 at 8:58 AM, Alexander Eaton
<alex at sistemabiobolsa.com>wrote:

> We go around this issue frequently, as end users often come up with the
> same idea.  It is hard to tell them no, so we always take a fresh look under
> the circumstances.  At the end of the day filtration of CO2 i always ruled
> out, and that means 40% of the volume of gas you are compressing serves no
> energetic purpose.  Add that to the fact that methane does not like to be
> compressed, and we arrive again at a "no" response.
>
> The one option we always examine is the non-compressed transportation of
> large gas reservoirs.  This we have tried for distances that are too long
> for a simple gas line, and short enough to be practical by cart.  Since we
> can make durable gas reservoirs of any size and shape, this is not
> unfeasible.  Once transported, the gas is connected and used as usual, while
> a second reservoir is filling.  If you can create value for this use, and
> the transport logistics to not out-weight the value of the energy provided,
> you may have an option for success.  Others have used large truck
> inner-tubes in the same way, that are then rolled down the street to the end
> use.  I suspect that in certain locations, systems that considered
> low-pressure distribution could gain some traction.
>
> Saludos,
>
> A
>
> On Tue, Nov 23, 2010 at 6:21 AM, Vianney Tumwesige <trustvianney at gmail.com
> > wrote:
>
>> Hello Harold,
>>
>> I completely agree withYvonne, it will be economically expensive to
>> compress the gas.
>>
>> P.S. Yvonne, could you send me a copy of the paper and ppt as well?
>>
>> Best regards
>>
>>  On Tue, Nov 23, 2010 at 1:49 PM, Harold leffertstra <
>> haroldleffertstra at yahoo.no> wrote:
>>
>>>     hello
>>> Got a question from the owner of a small biogass plant in Tanzania.
>>> He is expanding a small existing biogas plant to be able to digest waste
>>> from 200 households and manure from 100 cows.
>>> He is interested in using the biogas for fueling vehicles. In our part of
>>> the world we think it will be necessary with cleaning, uppgrading of the
>>> gas and compressing.
>>> Do any of you have experience/ideas about whether this is feasible for
>>> such a small plant?
>>> 1)What is necessary to use the biogas for fueling vehicles and 2) what
>>> are the technical and economical consequences?
>>> Thank you
>>> Harold Leffertstra
>>> Senior Advisor
>>> Norwegian Climate and Pollution Agency
>>> Oslo
>>>
>>>
>>> _______________________________________________
>>> Digestion mailing list
>>>
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>>>
>>> for more information about digestion, see
>>> Beginner's Guide to Biogas
>>> http://www.adelaide.edu.au/biogas/
>>> and the Biogas Wiki http://biogas.wikispaces.com/
>>>
>>>
>>>
>>
>>
>> --
>> Vianney Tumwesige
>> Director - Green Heat (U) Ltd  [image: Picture]
>> P.O. Box 10235
>> Kampala-Uganda
>> 256 (0) 71 237 9889
>>
>> "The more people are self sufficient in cooking fuel, the more personal
>> and financial freedom they have." - Emma Casson
>>
>>
>>  <http://trustvianney.wordpress.com/>
>>
>>
>> _______________________________________________
>> Digestion mailing list
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>>
>> for more information about digestion, see
>> Beginner's Guide to Biogas
>> http://www.adelaide.edu.au/biogas/
>> and the Biogas Wiki http://biogas.wikispaces.com/
>>
>>
>>
>
>
> --
> Alexander Eaton
> Sistema Biobolsa
> IRRI-Mexico
> RedBioLAC
>
> Mex cel: (55) 11522786
> US cel: 970 275 4505
>
> alex at irrimexico.org
> alex at sistemabiobolsa.com
>
> sistemabiobolsa.com
> www.irrimexico.org
> www.redbiolac.org
>
>
> _______________________________________________
> Digestion mailing list
>
> to Send a Message to the list, use the email address
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>
> to UNSUBSCRIBE or Change your List Settings use the web page
>
> http://lists.bioenergylists.org/mailman/listinfo/digestion_lists.bioenergylists.org
>
> for more information about digestion, see
> Beginner's Guide to Biogas
> http://www.adelaide.edu.au/biogas/
> and the Biogas Wiki http://biogas.wikispaces.com/
>
>
>
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