[Digestion] flex-use bio gas plant

[Art Krenzel]

Peter,

I agree with Paul on not wasting the energy to clean up the biogas to 
pipeline quality but rather use it on site.

You have a nice draw card for another industry to co-locate with you. 
Someone has a need (or want) to use renewable energy for their process and 
can provide a topping cycle consumption of your biogas product.  It might be 
a seasonal business which is in cycle with your gas production for instance.

Be Brave!  Be Original!  Be Creative!

Art Krenzel


----- Original Message ----- 
From: <mylesacc at comcast.net>
To: <digestion at listserv.repp.org>
Sent: Friday, November 17, 2006 8:52 AM
Subject: Re: [Digestion] flex-use bio gas plant


> Paul,
>
> No you are not getting cynical, least not yet. Some of situations we have 
> run into need different silutions. We had one proposal for a central 
> digester with effluent coming from several large farms in a 75 mile range. 
> The biogas produce would be more than needed at the digester location, 
> building a pipeline & the right of way was beyond economical. The 
> suggested solutions was clean up the gas for compressing and run the 
> effluent trucks on CNG. With waste water treatment plants there are 
> seasonal changes, sometimes more gas is used than produced and sometimes 
> it is the other way. We recommended CNG vehicles for the municpal plants 
> excess gas production. I speaking mostly of the gas produced being used 
> for heating of digesters & facilities. A cleaned up gas can be used for 
> electric generation, again tying into an electric network usually comes 
> out with no monetary gain. Using the gas on site is the best way no doubt. 
> Always enjoy your comments.
>
> Cheers
> Peter Z
>
>
> -------------- Original message -------------- 
> From: Paul Harris <paul.harris at adelaide.edu.au>
>
>> G'day All,
>>
>> I must be getting cynical in my old age, but suggest that with schemes
>> to compress NG and purify biogas the company be called "Nett Energy
>> Systems?". Biogas should be used directly if possible, as compression is
>> a waste of energy (unless the expansion is harnesses as a source of
>> cold!)
>>
>> It would probably be far easier (and MUCH more acceptable to neighbours,
>> of the central plant anyway!) to put the digesters on farm and pipe the
>> gas to the school.
>>
>> Happy digesting,
>> HOOROO
>>
>> mylesacc at comcast.net wrote:
>> >
>> > Jason,
>> >
>> > I have worked with a company New Energy Solutions Inc (www.nesi.biz) 
>> > they have
>> a method of converting ADG from dairy manure into pipeline quality 
>> natural gas,
>> which also can be compressed for CNG vehicles. NESI also can produce 
>> ultra-pure
>> hydrogen from the digester gas. NESI has a beta site on a dairy farm near
>> Cornell Univ.
>> >
>> > Peter Z
>> > _______________________________________________
>> > Digestion mailing list
>> > Digestion at listserv.repp.org
>> > http://listserv.repp.org/mailman/listinfo/digestion_listserv.repp.org
>>
>> -- 
>> Mr. Paul Harris
>> Faculty of Sciences, DP710
>> The University of Adelaide, Roseworthy Campus, AUSTRALIA 5371
>> Ph : +61 8 8303 7880
>> Fax : +61 8 8303 7979
>> mailto:paul.harris at adelaide.edu.au
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