[Gasification] Gasification Digest, Vol 10, Issue 4
va ma
mavasanthi at gmail.com
Thu Jun 16 01:33:43 CDT 2011
Dear Jan,
I would like to know the following details.
I am working on pyrolysis for biochar production. I wanted to do
catalytic/steam reforming of the volatiles and gases released during
the process. Kindly give me an idea of catalyst and other details of
reformation of these mixture into syngas.
Thanks & reagrds
Dr.M.Vasanthi
On 6/4/11, gasification-request at lists.bioenergylists.org
<gasification-request at lists.bioenergylists.org> wrote:
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> Today's Topics:
>
> 1. Re: Engine operation on producer gas (Jim Leach)
> 2. Sawdust in Fan TLUD (Tom Miles)
> 3. Re: Sawdust in Fan TLUD (Thomas Reed)
> 4. APL Gasification and Biochar workshop in 2 weeks, June 17-19
> (jim mason)
> 5. Re: Sawdust in Fan TLUD (Paul S. Anderson)
> 6. Re: Sawdust in Fan TLUD (Mikael Sj?blom)
> 7. Re: Sawdust in Fan TLUD (Tom Miles)
> 8. Re: Sawdust in Fan TLUD (Tom Miles)
> 9. Re: Sawdust in Fan TLUD (Mikael Sj?blom)
> 10. Re: Sawdust in Fan TLUD (Pete & Sheri)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Thu, 2 Jun 2011 15:03:58 -0700
> From: "Jim Leach" <jleach at danatech.net>
> To: "'Discussion of biomass pyrolysis and gasification'"
> <gasification at lists.bioenergylists.org>
> Subject: Re: [Gasification] Engine operation on producer gas
> Message-ID: <74A2F76443EC4B99BD7A46B8921F8660 at danatech01>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Tom,
> It is way more complicated than that and gases can have the same heating
> value and still have widely different combustion characteristics,
> particularly when burned in a gas engine. An example is landfill gas vs.
> producer gas that have the same heating value. I have spend two years on
> this subject and I am done discussing it here.
>
> Best Regards,
>
> JAMES T. LEACH, P.E.
> President
>
> DANA TECHNOLOGIES, INC.
> 32242 Paseo Adelanto, Suite D
> San Juan Capistrano, CA 92675
> Ph 949-496-6516
> Fx 949-496-8133
> Mobile 949-933-6518
>
>
> _____
>
> From: gasification-bounces at lists.bioenergylists.org
> [mailto:gasification-bounces at lists.bioenergylists.org] On Behalf Of
> linvent at aol.com
> Sent: Thursday, June 02, 2011 11:52 AM
> To: gasification at lists.bioenergylists.org
> Subject: Re: [Gasification] Engine operation on producer gas
>
>
> Work by various groups has shown that high compression engines do not suffer
> the predetonation of methane based spark ignited engines when operated on
> produced gas, which in turn allows for higher BMEP. The Caterpillar fuels
> handbook states that low BTU gases can be run on their engines because the
> air:fuel ratio is much lower and the stiochiometric mix of around 80BTU/SCF
> going into the cylinder is around the same as a methane fired engine.
> Hydrogen will cause 60% derating of a SI engine, and producer gas 20-30%. CO
> does have an impact on the overall flame speed of the mix and compression
> tolerance.
>
> Sincerely,
> Leland T. "Tom" Taylor
> President
> Thermogenics Inc.
>
>
> -----Original Message-----
> From: Jim Leach <jleach at danatech.net>
> To: 'Discussion of biomass pyrolysis and gasification'
> <gasification at lists.bioenergylists.org>
> Sent: Thu, Jun 2, 2011 11:53 am
> Subject: Re: [Gasification] back to gasification
>
>
> Tom,
> CO does moderate flame speed as you say, but it does not correct the
> hydriogen problem for an Otto cycle engine. The single best indicator for
> fuel suitability for a gas engine is the methane number, and a producer gas
> has a very low methane number. The relatively high CO content does not
> help. For even very modest BMEP operation, a methane number of at least 60
> is required. A producer gas from biomass will make just about that and so
> that will eliminate all high BMEP engines from consideration or
> alternatively, they can be substantially derated.
>
> Best Regards,
>
> JAMES T. LEACH, P.E.
> President
>
> DANA TECHNOLOGIES, INC.
> 32242 Paseo Adelanto, Suite D
> San Juan Capistrano, CA 92675
> Ph 949-496-6516
> Fx 949-496-8133
> Mobile 949-933-6518
>
>
> _____
>
> From: gasification-bounces at lists.bioenergylists.org
> [mailto:gasification-bounces at lists.bioenergylists.org
> <mailto:gasification-bounces at lists.bioenergylists.org?> ] On Behalf Of
> linvent at aol.com
> Sent: Thursday, June 02, 2011 4:31 AM
> To: gasification at lists.bioenergylists.org
> Subject: Re: [Gasification] back to gasification
>
>
> With the exception that CO found in producer gas moderates the H2 combustion
> rate and moves the potential compression ratio way up above CH4 tolerable
> compression levels. There is also the question of whether taking the
> producer gas to methane has the economic benefit of doing so when you are
> then competing with natural gas which in the US is selling for $4/mmBTU.
>
> Sincerely,
> Leland T. "Tom" Taylor
> President
> Thermogenics Inc.
>
>
> -----Original Message-----
> From: Jim Leach <jleach at danatech.net>
> To: 'Discussion of biomass pyrolysis and gasification'
> <gasification at lists.bioenergylists.org>
> Sent: Wed, Jun 1, 2011 5:35 pm
> Subject: Re: [Gasification] back to gasification
>
>
> Thanks again Florian,
>
> I do have a couple of comments. You still have to cool the product gas down
> for the gas turbine, not because of the turbine, but because of the gas
> control valves. They have temperature limits that cannot be exceeded,
> typically about 60C. Also, there is an energy benefit to methanation for
> application to engines. The benefit is that converting the H2 to CH4 will
> allow engines with higher BMEPs to be applied, and that means higher
> efficiency, and greater output for the same engine frame size.
>
> Best Regards,
>
> JAMES T. LEACH, P.E.
> President
>
> DANA TECHNOLOGIES, INC.
> 32242 Paseo Adelanto, Suite D
> San Juan Capistrano, CA 92675
> Ph 949-496-6516
> Fx 949-496-8133
> Mobile 949-933-6518
>
>
> _____
>
> From: gasification-bounces at lists.bioenergylists.org
> [mailto:gasification-bounces at lists.bioenergylists.org
> <mailto:gasification-bounces at lists.bioenergylists.org?> ] On Behalf Of
> Florian Nagel
> Sent: Wednesday, June 01, 2011 4:07 PM
> To: 'Discussion of biomass pyrolysis and gasification'
> Subject: Re: [Gasification] back to gasification
>
>
> Hi James
>
> Regarding gas engines, you are right that cooling is a must from a
> thermodynamical perspective. Regarding gas turbines, a hot gas cleaning
> process would be very nice to have (excuse me mentioning gas turbines in the
> last sentence of the last comment?clearly doesn?t belong there?) because the
> turbines have the potential to stand high combustion temperatures. The
> according exhaust gas would be in turn very hot, which makes the use of this
> heat possible in a bottoming cycle. So, looking at a gasturbine combined
> cycle, high fuel gas temperature does make sense if you adjust the
> combustion temperature in a way that the gas turbine stands it and if you
> use the exhaust heat. However, this requires a hot gas cleaning process. At
> PSI, we operated high-temperature fuel cell with producer gas that was
> cleaned in a hot gas cleaning system where the gas temperature never dropped
> below 500C. Thus, there are ways to remove tars, etc. at high temperature
> (Catalytic partial oxidation or high-temperature reforming steps). Anyways,
> I wouldn?t go so far and say that this technology is readily available ;o)
>
> In any case, methanation is a great way to convert woody biomass into a more
> usable and storable form but I don?t quite see it in combination with gas
> engines. Just to expensive and without real efficiency benefit if you aim at
> electricity as end product.
>
> Cheers
> Florian
>
> From: gasification-bounces at lists.bioenergylists.org
> [mailto:gasification-bounces at lists.bioenergylists.org
> <mailto:gasification-bounces at lists.bioenergylists.org?> ] On Behalf Of Jim
> Leach
> Sent: Wednesday, June 01, 2011 17:18
> To: 'Discussion of biomass pyrolysis and gasification'
> Subject: Re: [Gasification] back to gasification
>
> Thanks Florian,
>
> If one wants to burn the product gas in an engine or a gas turbine you have
> to cool and clean the gas anyway. So dropping the temperature would be a
> part of the tar removal process and would occur anyway. Adding water is not
> good because the product gas must be well below the dew point for the
> combustion device. So it you put it in for methanation, you will have to
> take it out later. But what I was interested in was simply converting the H2
> to CH4, because engines (including GT's) don't really like H2 (it burns too
> fast). Reciprocating engines in particular, would much prefer a steady diet
> of CH4. But I think I understand from your answer is that it is not worth
> it. Unfortunately, an answer I was expecting.
>
> JAMES T. LEACH, P.E.
> President
>
> DANA TECHNOLOGIES, INC.
> 32242 Paseo Adelanto, Suite D
> San Juan Capistrano, CA 92675
> Ph 949-496-6516
> Fx 949-496-8133
> Mobile 949-933-6518
>
>
> _____
>
> From: gasification-bounces at lists.bioenergylists.org
> [mailto:gasification-bounces at lists.bioenergylists.org
> <mailto:gasification-bounces at lists.bioenergylists.org?> ] On Behalf Of
> Florian Nagel
> Sent: Wednesday, June 01, 2011 2:52 PM
> To: 'Discussion of biomass pyrolysis and gasification'
> Subject: Re: [Gasification] back to gasification
> Hi James
>
> I cant comment on the cost of the methanation step but I can comment on your
> idea regarding a methanation step as fuel upgrade in a gasification- and gas
> engine-based power plant. I did my thesis together with Jan at PSI working
> on the combination of high-temperature fuel cells with woody biomass
> gasifiers: http://e-collection.library.ethz.ch/view/eth:41553 . Hi Jan, I m
> still on that list as you see :D
>
> Methanation is an exothermic process that yields the highest methane
> concentration in the product gas when kept around 400C process temperature.
> Hence, you ll first have to cool your syngas down to 400C. Depending on your
> gasifier type and syngas composition, you might get into carbon deposition
> problems (Boudouard reaction for example where 2 CO molecules decompose into
> carbon and carbon dioxide). You can overcome these problems by injecting
> steam into your syngas (which will cool it down at the same time..) which
> you will also need to increase your hydrogen atom content in a way that
> allows methanation. Then you can take it from there and produce methane.
>
> Problem I see is that by introducing water into your fuel gas, you already
> lower its heating value. This results in a lower combustion temperature in
> your gas engine. Gas engines are limited by the Carnot efficiency rule that
> clearly states that the efficiency of a combustion engine increases with the
> difference between the temperature of the hot compressed combusted gas and
> the temperature of the expanded exhaust gas. Hence, the efficiency of a
> combustion engine running on humidized syngas should definitely be lower
> than running on unhumidified syngas. Next problem is, during the methanation
> you have to cool the reactor. Thus you are again reducing the energy content
> of your syngas or by that time synthetic methane (relative to the energy
> content of the initial feedstock). The energy you extract from the
> methanation process is in form of low-temperature heat (400C) which you can
> hardly use economically to produce electricity with a steam cycle. Once you
> have your synthetic methane gas mixture, you ll have to reduce the high
> water content of it to not run into above mentioned efficiency issues of the
> combustion engine. This can only be done by cooling the gas close to ambient
> temperature were the water simply condenses. Another point in the process
> were you extract energy at very very low temperature level. I would consider
> this energy as a complete loss. From there you can use the dried, cold
> synthetic methane in your engine and produce electricity.
>
> To put it in numbers: Good gasification-gas engine plants reach efficiencies
> around 25 to 30% without bottoming-cycle (steam cycle to use exhaust heat).
> The methanation process has an efficiency around 65%. Together with a very
> high combustion engine efficiency of 42.5%, you end up with a maximum
> efficiency of a gasification-methanation-gas engine scheme of around 27.5%.
> However, with considerably higher equipment cost. I definitely recommend not
> to use a methanation step as fuel upgrading step but to use the syngas
> directly in your engine. In any case, the world totally changes if you aim
> at using high-temperature fuel cells, gas turbines or if you want to make
> the wood energy transportable and storable. The latter was the idea of the
> PSI methanation project given Switzerlands dependence on foreign gas
> imports.
>
> Cheers
> Florian
>
> From: gasification-bounces at lists.bioenergylists.org
> [mailto:gasification-bounces at lists.bioenergylists.org
> <mailto:gasification-bounces at lists.bioenergylists.org?> ] On Behalf Of Jim
> Leach
> Sent: Wednesday, June 01, 2011 15:51
> To: 'Discussion of biomass pyrolysis and gasification'
> Subject: Re: [Gasification] back to gasification
>
> Jan,
> I am curious what method you selected for tar removal. Also, was the
> methanation step expensive? The methane would make a better engine fuel
> than the H2 and CO but I am concerned about the cost.
>
> Best Regards,
>
>
>
> JAMES T. LEACH, P.E.
> President
>
> DANA TECHNOLOGIES, INC.
> 32242 Paseo Adelanto, Suite D
> San Juan Capistrano, CA 92675
> Ph 949-496-6516
> Fx 949-496-8133
> Mobile 949-933-6518
>
>
> _____
>
> From: gasification-bounces at lists.bioenergylists.org
> [mailto:gasification-bounces at lists.bioenergylists.org
> <mailto:gasification-bounces at lists.bioenergylists.org?> ] On Behalf Of Jan
> Kopyscinski
> Sent: Wednesday, June 01, 2011 1:13 PM
> To: Discussion of biomass pyrolysis and gasification
> Subject: Re: [Gasification] back to gasification
> Hi Kevin,
>
> I did my Phd thesis on this topic. You can find more information there:
> http://e-collection.library.ethz.ch/view/eth:1059
>
> or under www.bio-sng.com <http://www.bio-sng.com/> and www.biosng.com
> <http://www.biosng.com/> , http://www.biofuelstp.eu/bio-sng.html and on
> other pages.
>
> In a nut shell the process consits of:
> 1) low temperature steam gasification
> 2) gas cleaning (ash, tar, H2S, ...)
> 3) methanation = conversion of the syngas into methan (catalytic process,
> mostly Nickelcatalyst)
> CO + 3 H2 --> CH4 + H2O
> CO + H2O --> H2 + CO2
>
> If you use a different catalyst you can go for higher hydrocarbon such as
> Fischer Tropsch Diesel, or Methanol, ....
>
> 4) Fuel upgrading = removal of H2O, CO2
>
> We at the Paul Scherrer Institute in Switzerland (http://tpe.web.psi.ch/)
> investigated this process from wood to BioSNG in two scales for more than
> 1000h.
>
> Regards
>
> Jan
> -
> Dr. sc. Jan Kopyscinski
> Postdoctoral fellow
> Department of Chemical and Petroleum Engineering
> Schulich School of Engineering
> University of Calgary
> 2500 University Drive NW
> Calgary, Alberta, Canada T2N 1N4
>
> Email: jan.kopyscinski at ucalgary.ca
> Phone: 001 403 2109575
>
>
>
>
> _____
>
> Von: Kevin <kchisholm at ca.inter.net>
> Gesendet: May 31, 2011 5:02:24 PM
> An: "Discussion of biomass pyrolysis and gasification"
> <gasification at lists.bioenergylists.org>
> Betreff: Re: [Gasification] back to gasification
> Dear Jan
>
> Very interesting!!
>
> What steam temperature and pressure is required to gasify wood?
>
> Once one has such gas, what sort processing is required to convert it to
> CH4? (That is, what temperatures, pressures, catalysts, etc)
>
> Is there any way this can be done on a small scale?
>
> Is there any way this process can be modified to produce methanol on a small
> scale? If so, this would be awesome... it would then yield a very portable
> liquid fuel.
>
> Thanks!
>
> Kevin
>
> ----- Original Message -----
> From: Jan <mailto:jan.kopy at web.de> Kopyscinski
> To: Discussion of biomass <mailto:gasification at lists.bioenergylists.org>
> pyrolysis and gasification
> Sent: Tuesday, May 31, 2011 11:30 AM
> Subject: Re: [Gasification] back to gasification
>
>
> Hi,
>
> First of all, there are at least two different types of biofuel:
> First Generation: agricultural feedstock, which is converted by means of
> biochemical processes (i.e., digestion) --> Biogas
> Second Generation: woody biomass that is converted via thermochemical
> converiosn into a producer or so-calles syngas (Gasification).
> Thus, if your goal is to produce Methan or Natural Gas substite for a gas
> engine or transportation fuel you have different options. But you need to
> know what is your feedstock (dry , wet, digestable or not digestable such as
> wood):
> If you have a rather dry feedstock you can go for steam gasifiaction (no
> air, means no Nitrogen). The produced syngas you can catalytilcally convert
> to CH4, CO2 and H2O. Prior to the methanation process you need to remove the
> sulphur since it is deactivating your catalyts. H2O and CO2 can then be
> removed. This process has been investiaget by the Paul Scherrer Institiute
> in Switzerland (www.psi.ch <http://www.psi.ch/> and www.bio-sng.com
> <http://www.bio-sng.com/> ).
> Removal of nitrogen is too expensive, thus you should avoid feeding it into
> your process. 2 vol% to max 5vol% N2 in the methan rich gas is acceptable.
>
> Regards,
>
> Jan
>
> _____
>
> Von: "Pannirselvam P.V" <pannirbr at gmail.com>
> Gesendet: May 31, 2011 12:46:54 PM
> An: "Discussion of biomass pyrolysis and gasification"
> <gasification at lists.bioenergylists.org>
> Betreff: Re: [Gasification] back to gasification
>
> Dear A.D Karve
>
> One of the project we have been studying is based on the
> IGT,Instuite Gas technology patented process called Biotherm , in which
> the wood gas or syngqs can be passed into the biodigestor, in which CO
> and Hydrogen can be converted into methane ; the NOX .COX, SOX removed
> via simple known wet or dry process using activated charcoal and lime ;
> the methane is then compressed.The N can be removed as ammonia,as this can
> be very toxic to bio methane bacteria; Syngas obtained via pyrogas can
> reduce this N2 problem and complexity.Thus pyrogas technology has more
> potential than wood gas technology
>
> we are studying how to make this complex process into simple innovative
> process to make possible charcoal and methane economy which is practiced
> in the developed country in big scale can be made possible in developing
> village level technology too in small scale ,The project is yet in design
> stage to reduce CO2 to use as liquid fertilizer too increasing the
> calorific valued the compressed biogas.
>
> Yours truely
> Pannirselvam
>
>
> On Mon, May 30, 2011 at 11:01 PM, Anand Karve <adkarve at gmail.com> wrote:
> Dear List,
> We are already using, in India, wood gas made from agricultural waste
> to run stationary internal combustion engines. But, for using it as
> automobile fuel, it would have to be filled into cylinders, for which
> the nitrogen in the wood gas would have to be removed in order to
> reduce its bulk and to increase its calorfiic value. Does anybody have
> a suggestion as to how this can be achieved?
> Yours
> A.D.Karve
>
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> --
> ************************************************
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> ASSOCIATE . PROF.
> Research Group ,GPEC, Coordinator
> Computer aided Cost engineering
>
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>
> ------------------------------
>
> Message: 2
> Date: Fri, 3 Jun 2011 05:55:43 -0700
> From: "Tom Miles" <tmiles at trmiles.com>
> To: "'Discussion of biomass pyrolysis and gasification'"
> <gasification at lists.bioenergylists.org>
> Subject: [Gasification] Sawdust in Fan TLUD
> Message-ID: <000001cc21ed$8d466b70$a7d34250$@com>
> Content-Type: text/plain; charset="us-ascii"
>
> TLUD-ites,
>
>
>
> Does anyone have experience gasifying sawdust in a fan powered TLUD?
> Continuous feed?
>
>
>
> Tom Miles
>
>
>
> -------------- next part --------------
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>
> ------------------------------
>
> Message: 3
> Date: Fri, 3 Jun 2011 09:15:47 -0400
> From: Thomas Reed <tombreed2010 at gmail.com>
> To: Discussion of biomass pyrolysis and gasification
> <gasification at lists.bioenergylists.org>
> Subject: Re: [Gasification] Sawdust in Fan TLUD
> Message-ID: <A05A2F5A-D449-4BCE-A5EE-A9938541D189 at gmail.com>
> Content-Type: text/plain; charset="us-ascii"
>
> TM
>
> Depends greatly on the sawdust particle size and moisture content. With
> very coarse sawdust should work ok.
>
> With a small fan you may get no penetration. With a larger fan you are
> likely to get a spouted of fluidized bed.
>
> Tom Reed
>
> Dr Thomas B Reed
> President, The Biomass Energy Foundation
> www.Woodgas.com
>
> On Jun 3, 2011, at 8:55 AM, "Tom Miles" <tmiles at trmiles.com> wrote:
>
>> TLUD-ites,
>>
>>
>>
>> Does anyone have experience gasifying sawdust in a fan powered TLUD?
>> Continuous feed?
>>
>>
>>
>> Tom Miles
>>
>>
>>
>> _______________________________________________
>> Gasification mailing list
>>
>> to Send a Message to the list, use the email address
>> Gasification at bioenergylists.org
>>
>> to UNSUBSCRIBE or Change your List Settings use the web page
>> http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org
>>
>> for more Gasifiers, News and Information see our web site:
>> http://gasifiers.bioenergylists.org/
> -------------- next part --------------
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>
> ------------------------------
>
> Message: 4
> Date: Fri, 3 Jun 2011 06:45:52 -0700
> From: jim mason <jim at allpowerlabs.org>
> To: gasification at bioenergylists.org
> Subject: [Gasification] APL Gasification and Biochar workshop in 2
> weeks, June 17-19
> Message-ID: <BANLkTikOLB5x0kYi2r2Lg0SzqU9MsQwVmQ at mail.gmail.com>
> Content-Type: text/plain; charset="windows-1252"
>
> *Father's Day Gasification and Biochar Workshop: June 17-19, 2011**
>
> Opening Intro & Lecture: Friday, June 17, 7:30 ? 9:30PM
> Weekend Build, Run and Test: Saturday and Sunday, June 17-19, 11am ? 7pm*
>
> *Location: ALL Power Labs, 1010 Murray Street, Berkeley CA
> 94710<http://www.gekgasifier.com/about/workshop/travel-and-accomodation/>
> Cost: Free if you are a GEK or BEK owner, either through self build or
> purchase. Otherwise, $100 for weekend*.
> RSVP to the forum
> here.<http://www.gekgasifier.com/forums/showthread.php?p=2145#post2145>
> Buy
> your spot here. <http://www.gekgasifier.com/about/workshop/sign-up/>
>
>
> Our summer workshop is fast approaching- June 17th - 19th. Many of you
> have already RSVP'ed and are flying in from the 4 corners, but there is
> still room for more. So come join us for a quality Father's Day weekend of
> wrenching, rotating machinery, and guided tour down the rabbit hole of
> biomass thermal conversion.
>
> The workshop begins with a Friday evening talk on the science of
> gasification and pyrolysis, and the new engineering solutions embodied in
> the GEK gasifier and BEK biochar maker. Saturday and Sunday are full days
> of building, running and testing the physical particulars. Come prepared to
> get your hands dirty building and running machinery. We learn through both
> talking and working.
>
> We'll have 4 projects going in parallel for this round of the workshop. You
> can participate in all of them, and wander between them as desired.
>
> *1. 50 Hour Endurance run of the 10kw Power Pallet:
> *Long proving runs of the Power Pallet continue on this end. This round
> we'll do a total of 50 hours over several days. We have it on good
> authority that it will not rain this time, and we'll be sure to have plenty
> of reasonable fuel on hand before we start. We look forward to more refined
> data on fuel consumption, gas composition, and feedback on general usability
> from you kicking the tires over the weekend. Runs will start on Saturday
> and continue into the early part of the following week. If you can't be
> here, we'll have a webcam on the proceedings as usual.
>
> This test will use one of the current generation stainless steel Power
> Pallets pictured here: http://www.gekgasifier.com/wpgallery/
>
> *2. Demonstration runs of the 20kw Power Pallet:*
> Those of you interested in the larger 20kw Power Pallet will can finally see
> one in action over the weekend. There will also be 8 of the 20kw Power
> Pallets under assembly in the APL factory, so you can see how we make them.
> Things will look something like this, only bigger:
> http://wiki.gekgasifier.com/w/file/40416596/batch2onthefloor.JPG. The
> engineers and builders of these units will be on hand to answer questions
> and explain the details.
>
> *3. GEK Gasifier Building:
> *Want to build you own gasifier? Here's your chance to do it, using our
> tools and with plenty of instruction from the local crew.
>
> This round of the workshop we're having a special GEK Level III building
> clinic. We have tables and welders for 4 people who want to weld together a
> kit over the weekend. Given clear inhouse instruction, you should be able
> to get through the building process by the end of Sunday. Finished
> gasifiers can Russian doll back into the hopper and filter for checking as
> oversize baggage on the plane. Yes this does work. We do this regularly.
>
> Anyone who wants to do this will need to reserve a spot by purchasing a
> Level III weld together GEK kit. There is no additional cost for
> instruction, using our tools, and burning our welding wire. The workshop is
> also free if you get a kit. We're trying to make this easy and accessible.
>
> Again, there are ONLY 4 slots for gasifier building. Welders are limited.
> Please reserve ahead of time if you want to build a kit.
>
>
> *4. BEK Biochar maker running:
> *
> We continue to have the BEK on hold while we focus on ramping up the Power
> Pallet production. This has made quite a few people unhappy, as there is so
> few small scale biochar making machines available at the moment. We're
> trying to get back to making these as soon as possible, but in the meantime
> we wanted to give the interested a chance to run our in house machine.
>
> We'll have the BEK on fire both Saturday and Sunday of the workshop. You
> are welcome to bring your feedstock of interest and run it through. Or, you
> can experiment with our variety of feedstocks on location. If you have some
> you want to bring, please do write us beforehand so we can coordinate the
> details.
>
>
> *
> General Info and Signup*
>
> The APL workshop series offers education, research reports and hands-on
> experience to bring more people to successful operation of small scale
> gasification and pyrolysis units. The event is open to everyone, not just
> GEK or BEK users/owners. Worshops are free if you own a GEK or BEK by
> either purchase or DIY build. Otherwise the weekend is $100, which helps to
> cover food, drink and other consumables.
>
> If you want to join us, please RSVP to the forum thread here:
> http://www.gekgasifier.com/forums/showthread.php?t=563
>
> If you need to pay the workshop fee, you can do so via credit card here:
> http://www.gekgasifier.com/about/workshop/sign-up/
>
> Information on local accommodation, maps and airports is here:
> http://www.gekgasifier.com/about/workshop/travel-and-accomodation/
>
>
> We look forward to seeing you here soon.
>
> jim
>
>
> --
> ------------------------------------------------------------------------------
> Jim Mason
> Website: http://www.whatiamupto.com
> Current Projects:
> - Gasifier Experimenters Kit (the GEK): http://www.gekgasifier.com
> - Escape from Berkeley alt fuels vehicle race: www.escapefromberkeley.com
> - ALL Power Labs on Twitter: http://twitter.com/allpowerlabs
> - Shipyard Announce list:
> http://lists.spaceship.com/listinfo.cgi/icp-spaceship.com
> -------------- next part --------------
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>
> ------------------------------
>
> Message: 5
> Date: Fri, 03 Jun 2011 08:46:26 -0500
> From: "Paul S. Anderson" <psanders at ilstu.edu>
> To: Discussion of biomass pyrolysis and gasification
> <gasification at lists.bioenergylists.org>, Thomas Reed
> <tombreed2010 at gmail.com>
> Cc: Hugh McLaughlin <wastemin1 at verizon.net>
> Subject: Re: [Gasification] Sawdust in Fan TLUD
> Message-ID:
> <20110603084626.77532j19xlq830mc at redbirdmail.illinoisstate.edu>
> Content-Type: text/plain; charset=ISO-8859-1; DelSp="Yes";
> format="flowed"
>
> Dear All,
>
> I totally agree with Tom Reed's comments (below).
>
> Particle size is subjective, and some people call sawdust what I would
> call small shavings. If you can see the curl in the cut of the wood,
> that material can probably be used in a Fan Assisted (FA) TLUD. I and
> others have done that on experimental basis.
>
> I know of nobody focused on "sawdust" in TLUDs. Too much air could
> create channels or what Tom R. called "spouted."
>
> At Chip Energy, Paul Wever and I have successfully used some mixtures
> of sawdust with other larger-sized fuels, but not successfully with
> 100% sawdust even when we used compressed air to be sure to be able to
> blow through the fuel pile.
>
> To date, the only consistently successful "small particle" fuel in a
> TLUD-FA is rice husks. That work is credited to Alexis Belonio in the
> Philippines, and much further work by Paul Olivier in Vietnam.
>
> So, I suspect that wood particles as small as rice husks could be
> successfully used in a TLUD-FA. But sawdust does not come in such
> nicely uniform particles of that size.
>
> Somebody is asking. I hope we hear of their interests and experiences.
>
> I say frequently: We only know about 20% of what is available to be
> learned about TLUD pyrolytic gasifier devices. There is so much yet
> to do and learn. All are encouraged to join in these efforts.
>
> Paul
> --
> Paul S. Anderson, PhD
> Known to some as: Dr. TLUD Doc Professor
> Phone (USA): 309-452-7072 SKYPE: paultlud Email: psanders at ilstu.edu
> www.gtz.de/de/dokumente/giz2011-en-micro-gasification.pdf (Best ref.)
>
>
> Quoting Thomas Reed <tombreed2010 at gmail.com>:
>
>> TM
>>
>> Depends greatly on the sawdust particle size and moisture content.
>> With very coarse sawdust should work ok.
>>
>> With a small fan you may get no penetration. With a larger fan you
>> are likely to get a spouted of fluidized bed.
>>
>> Tom Reed
>>
>> Dr Thomas B Reed
>> President, The Biomass Energy Foundation
>> www.Woodgas.com
>>
>> On Jun 3, 2011, at 8:55 AM, "Tom Miles" <tmiles at trmiles.com> wrote:
>>
>>> TLUD-ites,
>>>
>>>
>>>
>>> Does anyone have experience gasifying sawdust in a fan powered
>>> TLUD? Continuous feed?
>>>
>>>
>>>
>>> Tom Miles
>>>
>>>
>>>
>>> _______________________________________________
>>> Gasification mailing list
>>>
>>> to Send a Message to the list, use the email address
>>> Gasification at bioenergylists.org
>>>
>>> to UNSUBSCRIBE or Change your List Settings use the web page
>>> http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org
>>>
>>> for more Gasifiers, News and Information see our web site:
>>> http://gasifiers.bioenergylists.org/
>>
>
>
>
> ----------------------------------------------------------------
> This message was sent using Illinois State University RedbirdMail
>
>
>
>
>
> ------------------------------
>
> Message: 6
> Date: Fri, 3 Jun 2011 15:51:54 +0200
> From: Mikael Sj?blom <mikael.sjoblom at mevagroup.se>
> To: Discussion of biomass pyrolysis and gasification
> <gasification at lists.bioenergylists.org>
> Subject: Re: [Gasification] Sawdust in Fan TLUD
> Message-ID: <CA0EB312.A52B%mikael.sjoblom at mevagroup.se>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Or you can as we do, gasify fine sawdust in a cyclone reactor.
>
>
>
> Yours Sincererly
>
> Mikael Sjoblom
> Marketing Director
>
> Meva Innovation AB
> Sj?gatan 13,
> S-852 34 Sundsvall
> SWEDEN
> Phone: + 46 (0)60 15 34 10
> Mobile: + 46 (0)70 572 73 30
> Internet: www.mevainnovation.se
> E-mail: mikael.sjoblom at mevagroup.se
>
> *****************************************************
> This email and any files transmitted with it are confidential
> and intended solely for the use of the individual or entity to
> whom they are addressed. If you have received this email
> in error please notify mikael.sjoblom at mevagroup.se
>
> This email message has been virus checked by the virus
> programs used by Meva Group.
> *****************************************************
> P Please consider the environment - do you really need to print this email?
>
> From: Tom Miles <tmiles at trmiles.com<mailto:tmiles at trmiles.com>>
> Reply-To: Discussion of biomass pyrolysis and gasification
> <gasification at lists.bioenergylists.org<mailto:gasification at lists.bioenergylists.org>>
> Date: Fri, 3 Jun 2011 14:55:43 +0200
> To: 'Discussion of biomass pyrolysis and gasification'
> <gasification at lists.bioenergylists.org<mailto:gasification at lists.bioenergylists.org>>
> Subject: [Gasification] Sawdust in Fan TLUD
>
> TLUD-ites,
>
> Does anyone have experience gasifying sawdust in a fan powered TLUD?
> Continuous feed?
>
> Tom Miles
>
> -------------- next part --------------
> An HTML attachment was scrubbed...
> URL:
> <http://lists.bioenergylists.org/pipermail/gasification_lists.bioenergylists.org/attachments/20110603/207fb2c1/attachment-0001.html>
>
> ------------------------------
>
> Message: 7
> Date: Fri, 3 Jun 2011 07:26:52 -0700
> From: "Tom Miles" <tmiles at trmiles.com>
> To: "'Discussion of biomass pyrolysis and gasification'"
> <gasification at lists.bioenergylists.org>, "'Thomas Reed'"
> <tombreed2010 at gmail.com>
> Cc: 'Hugh McLaughlin' <wastemin1 at verizon.net>
> Subject: Re: [Gasification] Sawdust in Fan TLUD
> Message-ID: <008c01cc21fa$4a1a4d00$de4ee700$@com>
> Content-Type: text/plain; charset="us-ascii"
>
> Sawdust size <6 mm to 8 mm
> Sawdust moisture 10-20% MC
>
> Tom Miles
>
> -----Original Message-----
> From: gasification-bounces at lists.bioenergylists.org
> [mailto:gasification-bounces at lists.bioenergylists.org] On Behalf Of Paul S.
> Anderson
> Sent: Friday, June 03, 2011 6:46 AM
> To: Discussion of biomass pyrolysis and gasification; Thomas Reed
> Cc: Hugh McLaughlin
> Subject: Re: [Gasification] Sawdust in Fan TLUD
>
> Dear All,
>
> I totally agree with Tom Reed's comments (below).
>
> Particle size is subjective, and some people call sawdust what I would
> call small shavings. If you can see the curl in the cut of the wood,
> that material can probably be used in a Fan Assisted (FA) TLUD. I and
> others have done that on experimental basis.
>
> I know of nobody focused on "sawdust" in TLUDs. Too much air could
> create channels or what Tom R. called "spouted."
>
> At Chip Energy, Paul Wever and I have successfully used some mixtures
> of sawdust with other larger-sized fuels, but not successfully with
> 100% sawdust even when we used compressed air to be sure to be able to
> blow through the fuel pile.
>
> To date, the only consistently successful "small particle" fuel in a
> TLUD-FA is rice husks. That work is credited to Alexis Belonio in the
> Philippines, and much further work by Paul Olivier in Vietnam.
>
> So, I suspect that wood particles as small as rice husks could be
> successfully used in a TLUD-FA. But sawdust does not come in such
> nicely uniform particles of that size.
>
> Somebody is asking. I hope we hear of their interests and experiences.
>
> I say frequently: We only know about 20% of what is available to be
> learned about TLUD pyrolytic gasifier devices. There is so much yet
> to do and learn. All are encouraged to join in these efforts.
>
> Paul
> --
> Paul S. Anderson, PhD
> Known to some as: Dr. TLUD Doc Professor
> Phone (USA): 309-452-7072 SKYPE: paultlud Email: psanders at ilstu.edu
> www.gtz.de/de/dokumente/giz2011-en-micro-gasification.pdf (Best ref.)
>
>
> Quoting Thomas Reed <tombreed2010 at gmail.com>:
>
>> TM
>>
>> Depends greatly on the sawdust particle size and moisture content.
>> With very coarse sawdust should work ok.
>>
>> With a small fan you may get no penetration. With a larger fan you
>> are likely to get a spouted of fluidized bed.
>>
>> Tom Reed
>>
>> Dr Thomas B Reed
>> President, The Biomass Energy Foundation
>> www.Woodgas.com
>>
>> On Jun 3, 2011, at 8:55 AM, "Tom Miles" <tmiles at trmiles.com> wrote:
>>
>>> TLUD-ites,
>>>
>>>
>>>
>>> Does anyone have experience gasifying sawdust in a fan powered
>>> TLUD? Continuous feed?
>>>
>>>
>>>
>>> Tom Miles
>>>
>>>
>>>
>>> _______________________________________________
>>> Gasification mailing list
>>>
>>> to Send a Message to the list, use the email address
>>> Gasification at bioenergylists.org
>>>
>>> to UNSUBSCRIBE or Change your List Settings use the web page
>>>
> http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenerg
> ylists.org
>>>
>>> for more Gasifiers, News and Information see our web site:
>>> http://gasifiers.bioenergylists.org/
>>
>
>
>
> ----------------------------------------------------------------
> This message was sent using Illinois State University RedbirdMail
>
>
>
> _______________________________________________
> Gasification mailing list
>
> to Send a Message to the list, use the email address
> Gasification at bioenergylists.org
>
> to UNSUBSCRIBE or Change your List Settings use the web page
> http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenerg
> ylists.org
>
> for more Gasifiers, News and Information see our web site:
> http://gasifiers.bioenergylists.org/
>
>
>
>
>
> ------------------------------
>
> Message: 8
> Date: Fri, 3 Jun 2011 07:26:52 -0700
> From: "Tom Miles" <tmiles at trmiles.com>
> To: "'Discussion of biomass pyrolysis and gasification'"
> <gasification at lists.bioenergylists.org>
> Subject: Re: [Gasification] Sawdust in Fan TLUD
> Message-ID: <008d01cc21fa$4a72f450$df58dcf0$@com>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Mikael,
>
>
>
> Your VIPP - Vortex Intensive Power Process looks interesting. There is not
> much to see on your website. (http://www.mevainnovation.se/ ) Do you have
> product and system brochures? Is this based on university research?
>
>
>
> I'd be interested to know what scale you have built, how long you have run
> and what fuels you have gasified. The website says that you are targeting
> 1-2 MWe.
>
>
>
> What are the fuel specifications? <6 MM? 10% MC?
>
>
>
> Can you handle high as fuels such as ground wheat straw? 4-8% ash with more
> than 0.5 kg/GJ alkali (K20+Na2)?
>
>
>
> A system to handle ground straw would be very useful. Can you supply a
> turnkey system for USD $3,000/kWe or less?
>
>
>
> Thanks
>
>
>
> Tom
>
>
>
> From: gasification-bounces at lists.bioenergylists.org
> [mailto:gasification-bounces at lists.bioenergylists.org] On Behalf Of Mikael
> Sj?blom
> Sent: Friday, June 03, 2011 6:52 AM
> To: Discussion of biomass pyrolysis and gasification
> Subject: Re: [Gasification] Sawdust in Fan TLUD
>
>
>
> Or you can as we do, gasify fine sawdust in a cyclone reactor.
>
>
>
>
>
> Yours Sincererly
>
> Mikael Sjoblom
> Marketing Director
>
> Meva Innovation AB
>
> Sj?gatan 13,
> S-852 34 Sundsvall
> SWEDEN
> Phone: + 46 (0)60 15 34 10
> Mobile: + 46 (0)70 572 73 30
> Internet: www.mevainnovation.se
> E-mail: mikael.sjoblom at mevagroup.se
>
> *****************************************************
> This email and any files transmitted with it are confidential
> and intended solely for the use of the individual or entity to
> whom they are addressed. If you have received this email
> in error please notify mikael.sjoblom at mevagroup.se
>
> This email message has been virus checked by the virus
> programs used by Meva Group.
> *****************************************************
> P Please consider the environment - do you really need to print this email?
>
>
>
> From: Tom Miles <tmiles at trmiles.com>
> Reply-To: Discussion of biomass pyrolysis and gasification
> <gasification at lists.bioenergylists.org>
> Date: Fri, 3 Jun 2011 14:55:43 +0200
> To: 'Discussion of biomass pyrolysis and gasification'
> <gasification at lists.bioenergylists.org>
> Subject: [Gasification] Sawdust in Fan TLUD
>
>
>
> TLUD-ites,
>
>
>
> Does anyone have experience gasifying sawdust in a fan powered TLUD?
> Continuous feed?
>
>
>
> Tom Miles
>
>
>
> -------------- next part --------------
> An HTML attachment was scrubbed...
> URL:
> <http://lists.bioenergylists.org/pipermail/gasification_lists.bioenergylists.org/attachments/20110603/b7ed5745/attachment-0001.html>
>
> ------------------------------
>
> Message: 9
> Date: Fri, 3 Jun 2011 16:40:36 +0200
> From: Mikael Sj?blom <mikael.sjoblom at mevagroup.se>
> To: Discussion of biomass pyrolysis and gasification
> <gasification at lists.bioenergylists.org>
> Subject: Re: [Gasification] Sawdust in Fan TLUD
> Message-ID: <CA0EBEAB.A539%mikael.sjoblom at mevagroup.se>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Tom.
>
> I will give you a full spec of the VIPP system later today. But right now I
> must run for my sons soccer training ;-)
>
>
>
>
>
> Yours Sincererly
>
> Mikael Sj?blom
> Marketing Director
>
> [cid:6D9A1A8D-C3D8-46B6-9927-D23C64FA6503]
> Sj?gatan 13,
> S-852 34 Sundsvall
> SWEDEN
> Phone: + 46 (0)60 15 34 10
> Mobile: + 46 (0)70 572 73 30
> Internet: www.mevainnovation.se
> E-mail: mikael.sjoblom at mevagroup.se
>
> *****************************************************
> This email and any files transmitted with it are confidential
> and intended solely for the use of the individual or entity to
> whom they are addressed. If you have received this email
> in error please notify mikael.sjoblom at mevagroup.se
>
> This email message has been virus checked by the virus
> programs used by Meva Group.
> *****************************************************
> P Please consider the environment - do you really need to print this email?
>
> From: Tom Miles <tmiles at trmiles.com<mailto:tmiles at trmiles.com>>
> Reply-To: Discussion of biomass pyrolysis and gasification
> <gasification at lists.bioenergylists.org<mailto:gasification at lists.bioenergylists.org>>
> Date: Fri, 3 Jun 2011 16:26:52 +0200
> To: 'Discussion of biomass pyrolysis and gasification'
> <gasification at lists.bioenergylists.org<mailto:gasification at lists.bioenergylists.org>>
> Subject: Re: [Gasification] Sawdust in Fan TLUD
>
> Mikael,
>
> Your VIPP - Vortex Intensive Power Process looks interesting. There is not
> much to see on your website. (http://www.mevainnovation.se/ ) Do you have
> product and system brochures? Is this based on university research?
>
> I'd be interested to know what scale you have built, how long you have run
> and what fuels you have gasified. The website says that you are targeting
> 1-2 MWe.
>
> What are the fuel specifications? <6 MM? 10% MC?
>
> Can you handle high as fuels such as ground wheat straw? 4-8% ash with more
> than 0.5 kg/GJ alkali (K20+Na2)?
>
> A system to handle ground straw would be very useful. Can you supply a
> turnkey system for USD $3,000/kWe or less?
>
> Thanks
>
> Tom
>
> From:
> gasification-bounces at lists.bioenergylists.org<mailto:gasification-bounces at lists.bioenergylists.org>
> [mailto:gasification-bounces at lists.bioenergylists.org] On Behalf Of Mikael
> Sj?blom
> Sent: Friday, June 03, 2011 6:52 AM
> To: Discussion of biomass pyrolysis and gasification
> Subject: Re: [Gasification] Sawdust in Fan TLUD
>
> Or you can as we do, gasify fine sawdust in a cyclone reactor.
>
>
>
> Yours Sincererly
>
> Mikael Sjoblom
> Marketing Director
> Meva Innovation AB
> Sj?gatan 13,
> S-852 34 Sundsvall
> SWEDEN
> Phone: + 46 (0)60 15 34 10
> Mobile: + 46 (0)70 572 73 30
> Internet: www.mevainnovation.se
> E-mail: mikael.sjoblom at mevagroup.se
>
> *****************************************************
> This email and any files transmitted with it are confidential
> and intended solely for the use of the individual or entity to
> whom they are addressed. If you have received this email
> in error please notify mikael.sjoblom at mevagroup.se
>
> This email message has been virus checked by the virus
> programs used by Meva Group.
> *****************************************************
> P Please consider the environment - do you really need to print this email?
>
> From: Tom Miles <tmiles at trmiles.com<mailto:tmiles at trmiles.com>>
> Reply-To: Discussion of biomass pyrolysis and gasification
> <gasification at lists.bioenergylists.org<mailto:gasification at lists.bioenergylists.org>>
> Date: Fri, 3 Jun 2011 14:55:43 +0200
> To: 'Discussion of biomass pyrolysis and gasification'
> <gasification at lists.bioenergylists.org<mailto:gasification at lists.bioenergylists.org>>
> Subject: [Gasification] Sawdust in Fan TLUD
>
> TLUD-ites,
>
> Does anyone have experience gasifying sawdust in a fan powered TLUD?
> Continuous feed?
>
> Tom Miles
>
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> ------------------------------
>
> Message: 10
> Date: Fri, 3 Jun 2011 11:01:15 -0500
> From: "Pete & Sheri" <spaco at baldwin-telecom.net>
> To: "'Discussion of biomass pyrolysis and gasification'"
> <gasification at lists.bioenergylists.org>, "'Thomas Reed'"
> <tombreed2010 at gmail.com>
> Cc: 'Hugh McLaughlin' <wastemin1 at verizon.net>
> Subject: Re: [Gasification] Sawdust in Fan TLUD
> Message-ID: <000f01cc2207$7842a210$68c7e630$@net>
> Content-Type: text/plain; charset="us-ascii"
>
> Could one possibly semi-pelletize the sawdust directly at the input to the
> gasifier? I see pellet makers that use a screw extrusion method. If one
> could get enough compaction to loosely hold the particles together, right at
> the input point, then there wouldn't be the "spouting" discussed previously.
> There also wouldn't be all that pressurized air to deal with. The compacted
> material would also create a "seal" between the gasifier and the outside
> world, if needed.
>
> Pete Stanaitis
> --------------
>
>
>
>
>
>
>
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>
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> End of Gasification Digest, Vol 10, Issue 4
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