[Digestion] MSW

Thu May 29 10:00:09 CDT 2008

Dear Group:

Is there a CFB gasification system with CHP for 100 % organic MSW, moisture
between 20-30% for 100 tons per day?

Rgds,

Charles

-----Mensaje original-----
De: digestion-bounces at listserv.repp.org
[mailto:digestion-bounces at listserv.repp.org] En nombre de Naseem Aziz
Enviado el: Jueves, 29 de Mayo de 2008 05:40 a.m.
Para: digestion at listserv.repp.org
Asunto: Re: [Digestion] Digestion Digest, Vol 23, Issue 13

Dear Mr T R Krishnaswamy,
Is your gasification technology available for export to Pakistan the
material to be gasified would be either Rice Husk Cotton Stalks, sugar cane
bagasse or Municipal Solid Waste.
Best Regards
Naseem Aziz
Karachi, Pakistan

On 5/22/08, digestion-request at listserv.repp.org <
digestion-request at listserv.repp.org> wrote:
>
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> Today's Topics:
>
>   1. diesel replacement (Zietsman, Rex)
>   2. Re: diesel replacement (Montero Arguedas Jorge Mario)
>   3. Re: diesel replacement (Absorbentes S.A.)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Thu, 22 May 2008 07:28:23 +0200
> From: "Zietsman, Rex" <Rex at Process.co.za>
> Subject: [Digestion] diesel replacement
> To: <digestion at listserv.repp.org>
> Message-ID:
>        <15158807F724CB4593BF508C151108CC020FE78D at scalpel.imsgroup.local>
> Content-Type: text/plain;       charset="us-ascii"
>
> We were talking about the level of diesel replacement possible on
> biogas. Here is the replacement level with gasifier gas...
>
> Kind regards
> Rex
>
> Date: Wed, 21 May 2008 07:24:20 +0530
> From: venusengineers <venusengineers at eth.net>
> Subject: Re: [Gasification] wood gasifiers
> To: Discussion of biomass pyrolysis and gasification
> <gasification at listserv.repp.org>
>
> Dear Tom,
>
> A hectic work schedule is the cause of delay in this overdue response,
> for which my apologies. Some positive developments - we recently
> commissioned a 1.5 MWe dual fuel generator at a textile mill in Southern
> Tamil Nadu for off grid captive power. In initial runs, the specially
> designed dual fuel generator could achieve ~ 92% diesel replacement with
> producer gas. This opens up a whole range of new possibilities in
> developing countries in Africa, Latin America and Asia as well as the
> far north in Canada/Alaska/Scandinavia, which are abundantly endowed
> with a variety of low cost biomass resources and handicapped by poor
> grid penetration owing to remote habitations, resulting in their needs
> being serviced by imported diesel operated generators. The "fuel miles"
> are typically 500 - 1500 km as most of these locations do not have
> refineries close by.
>
> As many have observed, we have so far been chary of entering into new
> countries, mainly owing to additional cost implications needing
> deployment of trained manpower in distant lands over extended timelines
> and warranty implications under different legal regimens. Only recently
> did we decide to explore specific export projects where the ruggedness,
> reliability, fuel flexibility, service life and PLF>80% of our systems
> could prove useful in other settings.
>
> Your point is well taken that the target price for a power plant in USA
> should be about $ 2,500 -3,000/kWe of gross power, if you sell
> electricity @ $0.10/kWh from wood received @ $ 25-30/MT. Depending on
> unit capacity, this range can be achieved with our systems, subject to
> conditions specific to each installation, despite the recent 25-50%
> increases in input costs on mild steel, stainless steel and copper, You
> will appreciate that our technology is designed to operate at > 7,000
> hours/year in the industrial mode for faster recovery of capital costs
> and for such a punishing schedule the makeshift solutions of the DIY
> kind simply won't last. The result is higher upfront capital costs but
> lower lifecycle costs and therefore lower cost of generation.
>
> The mulch like wood waste (possibly in the form of slivers/fibres) may
> need to be compacted into briquettes prior to use in our systems, which
> typically use "rounds" of wood/briquettes in sizes 1" to 3" in any
> direction, obtained generally by transverse cutting of wooden poles with
> multi-blade saw cutters. Our limited experience with chipped wood has
> not been very encouraging. The as received moist wood is dried to ~10%
> mc, using part of the engine exhaust heat suitably diluted with ambient
> air in a continuous process drier.
>
> So, yes, we are willing to export our systems to other countries after a
> careful assessment of all the inputs necessary to ensure their
> successful operation. We are intentionally cautious, as good news
> travels at the speed of sound and bad news at the speed of light. :)}
>
> T R Krishnaswamy
>
>
>
> ------------------------------
>
> Message: 2
> Date: Thu, 22 May 2008 07:11:27 -0600
> From: "Montero Arguedas Jorge Mario" <JMonteroA at ice.go.cr>
> Subject: Re: [Digestion] diesel replacement
> To: <digestion at listserv.repp.org>
> Message-ID:
>        <3AB907714650E54FAB20217340FA976E08ECF2A0 at sabmen05.sabana.ice>
> Content-Type: text/plain;       charset="iso-8859-1"
>
> I ve always had this doubt: Is gasifier or producer gas net energy
> positive?  It seems the energy needed to heat say the wood, would offset
the
> energy contained in the gas.  Anybody has an idea of the numbers? A life
> cycle assessment?
>
> Mario
>
> -----Mensaje original-----
> De: digestion-bounces at listserv.repp.org [mailto:
> digestion-bounces at listserv.repp.org] En nombre de Zietsman, Rex
> Enviado el: Mi?rcoles, 21 de Mayo de 2008 11:28 p.m.
> Para: digestion at listserv.repp.org
> Asunto: [Digestion] diesel replacement
>
> We were talking about the level of diesel replacement possible on
> biogas. Here is the replacement level with gasifier gas...
>
> Kind regards
> Rex
>
> Date: Wed, 21 May 2008 07:24:20 +0530
> From: venusengineers <venusengineers at eth.net>
> Subject: Re: [Gasification] wood gasifiers
> To: Discussion of biomass pyrolysis and gasification
> <gasification at listserv.repp.org>
>
> Dear Tom,
>
> A hectic work schedule is the cause of delay in this overdue response,
> for which my apologies. Some positive developments - we recently
> commissioned a 1.5 MWe dual fuel generator at a textile mill in Southern
> Tamil Nadu for off grid captive power. In initial runs, the specially
> designed dual fuel generator could achieve ~ 92% diesel replacement with
> producer gas. This opens up a whole range of new possibilities in
> developing countries in Africa, Latin America and Asia as well as the
> far north in Canada/Alaska/Scandinavia, which are abundantly endowed
> with a variety of low cost biomass resources and handicapped by poor
> grid penetration owing to remote habitations, resulting in their needs
> being serviced by imported diesel operated generators. The "fuel miles"
> are typically 500 - 1500 km as most of these locations do not have
> refineries close by.
>
> As many have observed, we have so far been chary of entering into new
> countries, mainly owing to additional cost implications needing
> deployment of trained manpower in distant lands over extended timelines
> and warranty implications under different legal regimens. Only recently
> did we decide to explore specific export projects where the ruggedness,
> reliability, fuel flexibility, service life and PLF>80% of our systems
> could prove useful in other settings.
>
> Your point is well taken that the target price for a power plant in USA
> should be about $ 2,500 -3,000/kWe of gross power, if you sell
> electricity @ $0.10/kWh from wood received @ $ 25-30/MT. Depending on
> unit capacity, this range can be achieved with our systems, subject to
> conditions specific to each installation, despite the recent 25-50%
> increases in input costs on mild steel, stainless steel and copper, You
> will appreciate that our technology is designed to operate at > 7,000
> hours/year in the industrial mode for faster recovery of capital costs
> and for such a punishing schedule the makeshift solutions of the DIY
> kind simply won't last. The result is higher upfront capital costs but
> lower lifecycle costs and therefore lower cost of generation.
>
> The mulch like wood waste (possibly in the form of slivers/fibres) may
> need to be compacted into briquettes prior to use in our systems, which
> typically use "rounds" of wood/briquettes in sizes 1" to 3" in any
> direction, obtained generally by transverse cutting of wooden poles with
> multi-blade saw cutters. Our limited experience with chipped wood has
> not been very encouraging. The as received moist wood is dried to ~10%
> mc, using part of the engine exhaust heat suitably diluted with ambient
> air in a continuous process drier.
>
> So, yes, we are willing to export our systems to other countries after a
> careful assessment of all the inputs necessary to ensure their
> successful operation. We are intentionally cautious, as good news
> travels at the speed of sound and bad news at the speed of light. :)}
>
> T R Krishnaswamy
>
> _______________________________________________
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> Digestion at listserv.repp.org
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> Beginner's Guide to Biogas
> http://www.adelaide.edu.au/biogas/
> http://info.bioenergylists.org
>
>
>
> ------------------------------
>
> Message: 3
> Date: Thu, 22 May 2008 08:33:10 -0600
> From: "Absorbentes S.A." <absorbentes at intelnet.net.gt>
> Subject: Re: [Digestion] diesel replacement
> To: <digestion at listserv.repp.org>
> Message-ID: <20080522021819.9870D6B418 at mail.telecomunique.net.gt>
> Content-Type: text/plain;       charset="us-ascii"
>
> Dear Group:
>
> I am trying to get into the responsability of handling 500 tons a day of
> Municipal Organic Waste, but do not want to dispose of into the landfills.
> Any ideas of power generation systems without the contamination of burning
> it (like coal) and without Biodigestion?
>
> Rgds,
>
> Charles
>
>
>
>
>
>
>
>
>
> ------------------------------
>
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>
> End of Digestion Digest, Vol 23, Issue 13
> *****************************************
>

-- 
PAKWAYS,
NO 12 Amber Towers,
A-22 PECHS BLK 6,
KARACHI 75400,
PAKISTAN.

TEL: ++ 92 214541454.
CELL: ++ 92 333 2195908.
E-MAIL: pakways at gmail.com
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