Dear Dr. Miles and the list:
There is a significant difference between rice husk and cereal straw in
that husk is high in silica which has a much higher ash fusion temperature than
potash which is one of the principal components of plant matter and occurs in
plants in differing amounts. To digress a bit, silica uptake by plants, of
which grasses including bamboo can contain up to 40%, is not well understood
and the chemistry is quite interesting. Plants and humans do not grow without
silica.
Any of the fused elements can also have significant abrasion and corrosion
issues, which defines materials of construction.
From Dr. Miles' statement about shaft power, it seems that this means a
steam boiler system as opposed to engine operation from the nature of the
process described, and IC engine operation is more challenging from the gas
cleaning necessary, but boilers can also foul with mineral deposits and require
extensive cleaning that seriously impedes long operating hours between
downtime.
So far, it does not appear that the criteria set forth in the initial
request has been met, and it is of some curiosity as to the conclusion of the
inquirer?
Sincerely,
Leland T. "Tom" Taylor
Thermogenics Inc.
+001-505-463-8422
www.thermogenicx.com
Skype: ltt.invent
-----Original Message-----
From: Tom Miles <[email protected]>
To: 'Discussion of biomass pyrolysis and gasification'
<[email protected]>
Sent: Sun, Dec 24, 2017 12:34 pm
Subject: Re: [Gasification] Straw Fueled CHP
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:[email protected]] On
Behalf Of Leland Taylor
Sent: Sunday, December 24, 2017 9:35 AM
To: [email protected]
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 <[email protected]>
To: Discussion of biomass pyrolysis and gasification
<[email protected]>
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 [[email protected]] på vegne af
Leland Taylor [[email protected]]
Sendt: 24. december 2017 04:23
Til: [email protected]
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 <[email protected]>
To: Discussion of biomass pyrolysis and gasification
<[email protected]>
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
<[email protected]> 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: [email protected]
To: "'Discussion of biomass pyrolysis and gasification'"
<[email protected]>
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:[email protected]] On
Behalf Of Leland Taylor
Sent: Friday, December 22, 2017 4:19 AM
To: [email protected]
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 <[email protected]>
To: gasification <[email protected]>
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.
_______________________________________________
Gasification mailing list
to Send a Message to the list, use the email address
[email protected]
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/
_______________________________________________
Gasification mailing list
to Send a Message to the list, use the email address
[email protected]
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/
_______________________________________________
Gasification mailing list
to Send a Message to the list, use the email address
[email protected]
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/
_______________________________________________
Gasification mailing list
to Send a Message to the list, use the email address
[email protected]
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/
_______________________________________________
Gasification mailing list
to Send a Message to the list, use the email address
[email protected]
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/
_______________________________________________
Gasification mailing list
to Send a Message to the list, use the email address
[email protected]
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/
_______________________________________________
Gasification mailing list
to Send a Message to the list, use the email address
[email protected]
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/
