[Gasification] Gasification Digest, Vol 2, Issue 33
Ananda S.K. Weerakkody
askweerakkody at gmail.com
Sun Aug 20 22:44:24 CDT 2006
*Well said! Thank you.*
*This is a forum, I see, that well respected people in the industry
participate. Better, just watch ,what they say.*
**
*Ananda*
*(Engr Ananda Weerakkody*
*Philippines & Sri Lanka)*
On 8/21/06, gasification-request at listserv.repp.org <
gasification-request at listserv.repp.org> wrote:
>
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> Today's Topics:
>
> 1. List Etiquette, Gasification and Ethanol (Tom Miles)
> 2. which one is better (shelton victor)
> 3. Re: which one is better (Michael Redler)
> 4. Re: which one is better (MMBTUPR at aol.com)
> 5. Re: which one is better (Dick Glick)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Sat, 19 Aug 2006 13:49:22 -0700
> From: "Tom Miles" <tmiles at trmiles.com>
> Subject: [Gasification] List Etiquette, Gasification and Ethanol
> To: <gasification at listserv.repp.org>
> Message-ID: <000001c6c3d0$f3faed80$0200a8c0 at Hp1270>
> Content-Type: text/plain; charset="us-ascii"
>
> All,
>
> List Etiquette:
> Those who can find nothing better to post than complaints about other list
> members can do us all a favor by not posting at all. When you post this
> drivel you drive away valuable contributors to the discussion. People
> "vote
> with their feet" and leave the list.
>
> We rely on list members treating each other with courtesy and respect. We
> rarely find it necessary to censure or ban anyone from the list. Let's
> keep
> it that way.
>
>
> Gasification, Anerobic Digestion and Ethanol:
> We will increasingly see topics of gasification and anaerobic digestion
> combined with the production of ethanol. Jane Turnbull described two
> ethanol
> plants that are installing gasifiers. One is driving a thermal oxidizer
> for
> (volatile organic carbon) emissions control with heat and power
> byproducts.
> The other seeks to convert distillers grains and corn stover to energy for
> the evaporators and dryers in the ethanol plant.
>
> Gasification to syngas is an important path for the conversion of
> cellulose
> to ethanol and other liquid fuels. Several companies have recently
> proposed
> pilot and production facilities for the thermal conversion of corn stover
> and/or wheat straw to syngas for liquid fuels production. Gasfiication of
> biosolids from anaerobic digestion is also being proposed. Some of these
> were for a USDOE soliciation that was due last week. Through grants USDOE
> will make a substantial investment to offset risk in developing the new
> technology. These are $150 million plants. Some major ethanol producers
> had
> cellulose-to-ethanol projects in their development plans prior to the
> USDOE
> solicitation and will continue toward that goal. Having just attended a
> North Central workshop on this topic in Sioux Falls, South Dakota, I can
> tell you that there are serious public and private investments being made
> in
> these technologies. There are major technical challenges in converting
> agricultural wastes to syngas. These will be discussed on this list in
> coming weeks, months and years as the new facilites are built and tested.
>
> There are a few processes in which biomass is gasified, the gas is
> cleaned,
> and then passed though liquid fermenters to produce alcohol and a
> byproduct
> medium calorific value gas. I have worked with one of these systems at the
> pilot scale and the results are interesting.
>
> So let's keep an open mind and make positive comments toward the
> development
> of these technlogies rather than waste time beating up folks who raise
> questions that may be only slightly off topic.
>
> Thanks for your cooperation
>
> Tom Miles
> Bioenergy Lists Administrator
> www.trmiles.com
>
> Gasification:
> http://listserv.repp.org/mailman/listinfo/gasification_listserv.repp.org
> Anaerobic Digestion:
> http://listserv.repp.org/mailman/listinfo/digestion_listserv.repp.org
> Bioconversion, Ethanol and Liquid Fuels:
> http://listserv.repp.org/mailman/listinfo/bioconversion_listserv.repp.org
>
>
>
>
>
>
>
> ------------------------------
>
> Message: 2
> Date: Sun, 20 Aug 2006 08:03:51 +0100 (BST)
> From: shelton victor <sheltonvictor at yahoo.co.in>
> Subject: [Gasification] which one is better
> To: gasification at listserv.repp.org, Tom Jopson <tomj at growpro-inc.com>
> Message-ID: <20060820070351.78809.qmail at web8411.mail.in.yahoo.com>
> Content-Type: text/plain; charset=iso-8859-1
>
> hello
>
> Which one is better- Gasifier based dedicated gas engines or Gasifier
> based steam turbines for power generation
>
> 1. what will be the unit cost for power generated for the above both and
> space occupied, invsetment.
> 2.the syn gas has to be cooled of before engine--whats the min possible
> temp the gas can be cooled, what will be the problems it the temperatures go
> below the recomended gas temp.any waste heat recovery(WHR) possible
> 3.although the exhaust of gas engine can be done for WHR up to 180 C, but
> is it viable to generate power using a steam turbine
>
> 4. similarly for gasifier based steam turbine the above first cond
> 5.considering the same power and same fuel for both the cases
>
> have a great time
> bye
>
>
> ---------------------------------
> Here's a new way to find what you're looking for - Yahoo! Answers
> Send FREE SMS to your friend's mobile from Yahoo! Messenger Version 8. Get
> it NOW
>
> ------------------------------
>
> Message: 3
> Date: Sun, 20 Aug 2006 06:17:54 -0700 (PDT)
> From: Michael Redler <redlerm at yahoo.com>
> Subject: Re: [Gasification] which one is better
> To: gasification at listserv.repp.org
> Message-ID: <20060820131754.39317.qmail at web51315.mail.yahoo.com>
> Content-Type: text/plain; charset=iso-8859-1
>
>
> Shelton wrote: "Which one is better- Gasifier based dedicated gas engines
> or Gasifier based steam turbines for power generation?"
>
> That's an excellent and provocative question!
>
> I don't remember where I picked up these numbers but, I think
> reciprocating steam engines have a thermal efficiency of 17% and Internal
> combustion engines (Otto) are somewhere around 25%. I don't know that steam
> turbines are.
>
> The point I'm getting at is maybe gassifiers can bring boiler efficiency
> up to the point that all steam technology can compete with IC engines.
>
> Mike
>
> shelton victor <sheltonvictor at yahoo.co.in> wrote:
> hello
>
> Which one is better- Gasifier based dedicated gas engines or Gasifier
> based steam turbines for power generation
>
> 1. what will be the unit cost for power generated for the above both and
> space occupied, invsetment.
> 2.the syn gas has to be cooled of before engine--whats the min possible
> temp the gas can be cooled, what will be the problems it the temperatures go
> below the recomended gas temp.any waste heat recovery(WHR) possible
> 3.although the exhaust of gas engine can be done for WHR up to 180 C, but
> is it viable to generate power using a steam turbine
>
> 4. similarly for gasifier based steam turbine the above first cond
> 5.considering the same power and same fuel for both the cases
>
> have a great time
> bye
>
>
>
> ------------------------------
>
> Message: 4
> Date: Sun, 20 Aug 2006 10:17:07 EDT
> From: MMBTUPR at aol.com
> Subject: Re: [Gasification] which one is better
> To: redlerm at yahoo.com, gasification at listserv.repp.org
> Message-ID: <c1d.1c5aba0.3219c8e3 at aol.com>
> Content-Type: text/plain; charset="UTF-8"
>
> to Gasification from Lewis L Smith
>
> We should consider a broader range of options for the use of biomass,
> including at least the following ---
>
> ? Undensified feedstock > boiler > steam turbine > kWe or CHP
>
> ? Densified feedstock > boiler > steam turbine.
>
> ? Densified feedstock > cofiring with coal [or something else].
>
> ? Gasification > blending with pipeline natural gas.
>
> ? Gasification > boiler > steam turbine
>
> ? Gasification > gas turbine > kWe [with or without waste heat
> boiler].
>
> ? Gasification > IC engine > kWe or CHP
>
> Cordially. End of message.
>
>
> ------------------------------
>
> Message: 5
> Date: Sun, 20 Aug 2006 11:45:07 -0400
> From: "Dick Glick" <dglickd at pipeline.com>
> Subject: Re: [Gasification] which one is better
> To: <MMBTUPR at aol.com>, <redlerm at yahoo.com>,
> <gasification at listserv.repp.org>
> Message-ID: <005701c6c46f$9d514200$0200a8c0 at cfrdell>
> Content-Type: text/plain; format=flowed; charset="utf-8";
> reply-type=original
>
> Hello All --
>
> Gasification is, possibly, a 'small scale' use of biomass -- biomass
> should
> not be burned -- when separated, biomass waste should be made into compost
> and fertilizer (see, for example, http://www.rain.org/~sals/ingham.html)--
> when biomass is obtained from a single agricultural source -- methanogenic
> anaerobic fermentation -- is the only answer. At least that's the opinion
> from this corner -- whatever the scale -- small or country-wide.
>
> Best, Dick Glick
> www.CorpFutRes.com
>
>
>
> ----- Original Message -----
> From: <MMBTUPR at aol.com>
> To: <redlerm at yahoo.com>; <gasification at listserv.repp.org>
> Sent: Sunday, August 20, 2006 10:17 AM
> Subject: Re: [Gasification] which one is better
>
>
> > to Gasification from Lewis L Smith
> >
> > We should consider a broader range of options for the use of biomass,
> > including at least the following ---
> >
> > ? Undensified feedstock > boiler > steam turbine > kWe or CHP
> >
> > ? Densified feedstock > boiler > steam turbine.
> >
> > ? Densified feedstock > cofiring with coal [or something else].
> >
> > ? Gasification > blending with pipeline natural gas.
> >
> > ? Gasification > boiler > steam turbine
> >
> > ? Gasification > gas turbine > kWe [with or without waste heat
> > boiler].
> >
> > ? Gasification > IC engine > kWe or CHP
> >
> > Cordially. End of message.
> > _______________________________________________
> > Gasification mailing list
> > Gasification at listserv.repp.org
> > http://listserv.repp.org/mailman/listinfo/gasification_listserv.repp.org
> > http://www.repp.org/discussiongroups/resources/gasification
>
>
>
>
> ------------------------------
>
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>
> End of Gasification Digest, Vol 2, Issue 33
> *******************************************
>
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