[Gasification] Straw Fueled CHP

Sun Dec 24 22:49:52 CST 2017

Just keep the straw in a tank and keep the biomass covered with water. The
water would become acidic due conversion of cellulose into organic acids.
This water can go into a biogas reactor or it can also go into a field to
feed the soil bacteria. After repeated leachings lignin would remain behind
as residue, which is quite soft and which can be briquetted with relatively
low pressure. These briquettes can be used as solid fuel.
Yours
A.D.Karve

***
Dr. A.D. Karve

Chairman, Samuchit Enviro Tech Pvt Ltd (www.samuchit.com)

Trustee & Founder President, Appropriate Rural Technology Institute (ARTI)

On Mon, Dec 25, 2017 at 1:00 AM, Tom Miles <tmiles at trmiles.com> wrote:

> Flowable ag wastes with suitable ash chemistry are being gasified in Asia.
> For example, there are hundreds of rice husk gasifiers generating shaft
> power for rice mills. China build dozens of community scale straw gasifiers
> for heating and cooking. As Tom and Thomas have pointed out the ash
> chemistry of ag residues is a challenge for extended operation. That’s why
> carbonizing straws at low temperatures, keeping most of the ash in the char
> and burning the pyrolysis gas in a boiler to recover heat is an interesting
> alternative. You still accumulate slag in the pyrolyzer over time and have
> to clean it out periodically.
>
>
>
> Tom Miles
>
>
>
> *From:* Gasification [mailto:gasification-bounces at lists.bioenergylists.org]
> *On Behalf Of *Leland Taylor
> *Sent:* Sunday, December 24, 2017 9:35 AM
> *To:* gasification at lists.bioenergylists.org
> *Subject:* Re: [Gasification] Straw Fueled CHP
>
>
>
> Not surprising the comments below. The list of gasifier failures continues
> to grow without realizing the promises it portends.
>
>     We have gasified slagging materials and have had to operate between
> the gasification and slagging temperatures using careful control of the
> temperature and moderating materials to achieve this. We have managed to
> successfully address the gas cooling and cleaning with simple, non-barrier,
> non-filtering, non-fouling designs. Really work well at a very low cost and
> minimal maintenance with no replacement materials or clogging, mostly at
> low temperature.
>
>     Thermogenics continues to pursue the field in spite of the large
> number of others who have crashed and burned, so to speak, but because of
> the number of derelicts along the road, financing has been extremely
> difficult.
>
>     It is doubtful that what is being sought, a commercially successful
> straw or general ag waste gasifier will be found, if it did exist in the
> commercial realm, they would be so widespread that it would be an easy
> search, like so many others who have been searching without success.
>
>
>
> Sincerely,
>
> Leland T. "Tom" Taylor
>
> Thermogenics Inc.
>
> +001-505-463-8422
>
> www.thermogenicx.com
>
> Skype: ltt.invent
>
>
>
> -----Original Message-----
> From: Thomas Koch <tk at tke.dk>
> To: Discussion of biomass pyrolysis and gasification <gasification at lists.
> bioenergylists.org>
> Sent: Sun, Dec 24, 2017 3:31 am
> Subject: Re: [Gasification] Straw Fueled CHP
>
> I spend 3 years at the technical university in Denmark to build a 50-100
> kg straw pyrolysis unit. I could not find any documents in English but here
> is a Danish reference about the demo plant that came out of it. -
> http://www.videncenter.dk/gule%20halm%20haefte/Gul_Dansk/halm-DK09.pdf
>
> I was far too complicated to be commercial.
>
>
>
> We tried to gasify straw with very little success in various smaller
> gasifier. Slagging and channelling and high carbon content in the ash was
> some challenges.
>
>
>
> Some years ago a project was upscaled to 6 MW - but there was some thing
> wrong with the ash discharge principle. The K stayed in the bed and it was
> not possible to operate the gasifier long enough to complete this project
> and approx. half the funding was returned and the project stopped with out
> any results.  https://energiforskning.dk/sites/energiteknologi.dk/
> files/slutrapporter/10730_gasolution_final_report.pdf
>
>
>
> And in the same period charloss was renamed to BioCCS.
>
>
>
> We did not find any easy solutions - but we only spend a few hundreds mio
> dollars :-)
>
>
>
>
> ------------------------------
>
> *Fra:* Gasification [gasification-bounces at lists.bioenergylists.org] på
> vegne af Leland Taylor [linvent at aol.com]
> *Sendt:* 24. december 2017 04:23
> *Til:* gasification at lists.bioenergylists.org
> *Emne:* Re: [Gasification] Straw Fueled CHP
>
> Energy Farmers of Australia has very little specific information on their
> "projects" which is disappointing. By producing bio=char, you have a built
> in limit of energy conversion because bio-char or pyrolytic char represents
> the 30% fixed carbon in organic matter and is the overall thermal
> conversion is intrinsically limited by this loss. I am still of the opinion
> that long term "recycling" of crop residue which is what bio-char is has
> limited benefits from other nutrient depletion.
>
> Sincerely,
>
> Leland T. "Tom" Taylor
>
> Thermogenics Inc.
>
> +001-505-463-8422
>
> www.thermogenicx.com
>
> Skype: ltt.invent
>
>
>
> -----Original Message-----
> From: Jason <urepedese at gmail.com>
> To: Discussion of biomass pyrolysis and gasification <gasification at lists.
> bioenergylists.org>
> Sent: Sat, Dec 23, 2017 6:03 pm
> Subject: Re: [Gasification] Straw Fueled CHP
>
> Hi Daryl,
>
>
>
> try this crowd http://www.energyfarmers.com.au
>
>
>
> I was connected to Euan Beamont at energy farmers back in 2013, and
> exchanged a few emails with him. I directed him to this list, so he may be
> party to the conversation anyway. A mutual friend was Business Development
> Officer for the Council out there and was trying help progress for both
> Euan and myself.
>
>
>
> Euan told me he knew these guys. https://www.facebook.
> com/Green-Distillation-Technologies-427038147363145/
>
>
>
> Best Regards
>
> Jason Stewart
>
> http://intensifire.co.nz
>
>
>
> On Sat, Dec 23, 2017 at 5:28 PM, DARYL JOHN SCHERGER <
> daryl.scherger at bigpond.com> wrote:
>
> Thanks Tom,
>
> I've received a few good leads and hopefully one of them will prove
> suitable.  Liz Hamilton suggested I use your site and it was well worth
> while.
>
>
>
> We field burn million of tonnes of cereal straw annually in Australia and
> it just makes sense to use it for energy instead.
>
>
>
> Regards,
>
> Daryl.
>
>
>
> ------ Original Message ------
> From: tmiles at trmiles.com
> To: "'Discussion of biomass pyrolysis and gasification'" <
> gasification at lists.bioenergylists.org>
> Sent: Saturday, 23 Dec, 2017 At 3:06 AM
> Subject: Re: [Gasification] Straw Fueled CHP
>
> Ag Energy in Spokane, Washington has been developing a straw gasifier. You
> will have to contact to them to discover their experience with engines and
> power generation.
>
> https://ag.energy/
>
>
>
> Tom Miles
>
>
>
> *From:* Gasification [mailto:gasification-bounces at lists.bioenergylists.org]
> *On Behalf Of *Leland Taylor
> *Sent:* Friday, December 22, 2017 4:19 AM
> *To:* gasification at lists.bioenergylists.org
> *Subject:* Re: [Gasification] Straw Fueled CHP
>
>
>
> What is your anticipated cost/KW?
>
> Sincerely,
>
> Leland T. "Tom" Taylor
>
> Thermogenics Inc.
>
> +001-505-463-8422
>
> www.thermogenicx.com
>
> Skype: ltt.invent
>
>
>
> -----Original Message-----
> From: DARYL JOHN SCHERGER <daryl.scherger at bigpond.com>
> To: gasification <gasification at lists.bioenergylists.org>
> Sent: Thu, Dec 21, 2017 7:23 pm
> Subject: [Gasification] Straw Fueled CHP
>
> Hello,
>
>
>
> I'm looking for a supplier of proven gasification CHP systems that can use
> wheat straw as fuel, either shredded or as pellets.  The outputs needed are
> 150 kWe net and 350 kWt.
>
>
>
> I would like references from operating plants, preferably in Australia,
> Europe or North America, to confirm the reliability of their systems.
>
>
>
> Any suggestion will be gratefully received.
>
>
>
> Yours sincerely,
>
> Daryl Scherger.
>
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