David,
My wife would say good on ya lad, now make it work for us all.
(economically of course) (;-)
All the best,
Doug Williams.
(Fluidyne in retirement.)
On 23/09/18 19:28, David Pitt wrote:
Gentlemen
We have developed a full scale sludge to energy gasification plant in
conjunction with Yorkshire Water in the UK. The link below has a video
which describes the plant and shows the physical set up and
operational configuration which will give you a very good orientation
to its scale and level of development.
www.youtube.com/watch?v=M2D3xQIpeiY
<http://www.youtube.com/watch?v=M2D3xQIpeiY>
Be very happy to provide further information and of course be
delighted should anyone have a potential project application they
would like to discuss.
Regards
/*david*/
//
*David Pitt*
*Director*
*Enertecgreen Limited*
*M: +44 7785 230 109
O: +44 1753 910321
www.enertecgreen.com <http://www.enertcgreen.com>*
*Enertecgreen Ltd -Building 1 - Chalfont Park - Gerrards Cross - SL9
0BG - UK*
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On 23 September 2018 at 00:15, Tom Miles <[email protected]
<mailto:[email protected]>> wrote:
Biosolds are typically gasified in combination with wood or
another bulky biomass. I think the City of Lebanon has
incorporated biosolids in their fuel mix of dry urban wood waste.
Aries Energy purchased a fluidized bed gasifier developed for
biosolids but it is not intended for engine generation. In about
1985 City of Los Angeles ran three bubbling fluidized bed
gasifiers on dried digester gas. Heat was recovered in a steam
boiler. The project lasted about five years. There have been many
small scale experiments using dried biosolids in gasifiers for
engines. I am not aware any upgrading the gas.
A few years go Anaergia Inc ran a Biogreen Energy pyrolyzer in
which the dried biosolids from an anaerobic digester were
carbonized. The pyrolysis gas was put back into the digester
using a process patented by Washington State University. The
enriched digester gas was burned in an engine. A project to build
a larger system was announced for the City of Los Angeles was not
built.
Tom
*From:*Gasification <[email protected]
<mailto:[email protected]>> *On Behalf
Of *Pedros, Philip
*Sent:* Saturday, September 22, 2018 1:56 PM
*To:* Discussion of biomass pyrolysis and gasification
<[email protected]
<mailto:[email protected]>>
*Subject:* Re: [Gasification] Question from Philip Pedros
Mr. Williams
The question was from me and reflects my limited knowledge of
gasification, not the company’s.
I did not ask about digester gas being used to generate power, nor
am I aware of digester gas being referred to as syngas, as your
statement implies. Apparently I should have stated that the feed
stock to the gasifier was thermally dried biosolids.
What I asked and what was answered is in point 3 below. I am not
aware of syngas from a gasifier, with municipal biosolids as the
feedstock, directly fueling a CHP and was asking if it has been done.
Thank you,
Philip Pedros
Philip B. Pedros, Ph.D., P.E., BCEE
Technical Lead II
AECOM
250 Apollo Drive
Chelmsford, MA 01824
C: 781 258-8829
[email protected] <mailto:[email protected]>
*From:*Gasification
[mailto:[email protected]
<mailto:[email protected]>] *On Behalf
Of *Doug
*Sent:* Saturday, September 22, 2018 4:25 PM
*To:* [email protected]
<mailto:[email protected]>
*Subject:* Re: [Gasification] Question from Philip Pedros
Hi Philip,
Your question is really in several parts:
1. If you are referring to waste water containing sewage sludge,
then yes you will have the gas present.
2. Untreated Sewage gas (to clarify which syngas you are talking
about) cannot be fed directly into engines without at least a
scrubber between the gasometer storage and engine.
3. The gas calorific value of 120-150 Btu/scf is perfectly
adequate to run an engine and does not need boosting.
4. The technology you seek is already employed at many City Sewage
plants, generating power to run the plant.
5. I suggest you find working installations, there must be quite a
few in the USA.
Can I ask you why you or your organization think this is by your
question, unknown technology?
Regards,
Doug Williams.
On 23/09/18 07:49, [email protected] <mailto:[email protected]>
wrote:
Can untreated syngas generated from municipal wastewater
sludge be used directly to generate power? It is my
understanding that the heating value of untreated syngas (120
– 150 But/scf), is too low to feed directly to engines and
that some type of post treatment to boost the heating value to
190 -200 is typically economically prohibitive. Any
information on such post treatment and an case studies were
this has been done would be appreciated.
Thank you,
Philip Pedros
Philip B. Pedros, Ph.D., P.E., BCEE
Technical Lead II
AECOM
250 Apollo Drive
Chelmsford, MA 01824
C: 781 258-8829
[email protected] <mailto:[email protected]>
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