[Gasification] Straw Fueled CHP

Fri Dec 22 23:38:02 CST 2017

Daryl,

Consider pyrolysis to biochar. Talk to Pyrocal, http://www.pyrocal.com.au/  They started building mobile pyrolysis machines andnow make mostly stationary pyrolyzers. This year China carbonized 800,000 tons of wheat and rice straw to biochar which was converted to a biochar compound fertilizer and sold it back to the farmers.

http://www.biochar-international.org/node/8858

You have an active group of biochar producers and researchers in Australia. Make biochar and recover the heat for process heat or power. 

https://anzbc.org.au/

We burned more than a million tons of straw per year in Oregon from 1938-1990s. In the 1970s we designed and tested mobile field burners on thousands of acres. The cost of labor made them too expensive to operate. The best arrangement is to get it off the field, store it, and either burn it in a fit for purpose power plant, like in Denmark, Spain, UK, etc., or use it for other purposes. Each year we export 700,000 tons  of our fine leaf grass seed straw to the Far East for diary roughage. We still have another 400,000 tons that could be converted to energy.       

You won’t find many gasifiers that can handle straw. To make an engine quality gas you gasify at high temperatures. The alkali (K, Na) in the ash melts at low temperatures so you make a lot of low grade glass and plug up the gas flow. Part of the alkali carries over into the gas and eventually into the engines. The AgEnergy system has a grinder that turns the ash-char into a friable biochar which they have used on their fields to increase the pH. (Low pH is a result of injecting urea or ammonia as fertilizer in no-till farming.) 

China build may straw fired gasifiers in the 1990s for heat and cooing fuel. I have heard that most of them are now abandoned. 

Tom

From: Gasification [mailto:gasification-bounces at lists.bioenergylists.org] On Behalf Of DARYL JOHN SCHERGER
Sent: Friday, December 22, 2017 8:28 PM
To: Discussion of biomass pyrolysis and gasification <gasification at lists.bioenergylists.org>
Subject: Re: [Gasification] Straw Fueled CHP

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 <mailto:tmiles at trmiles.com> 
To: "'Discussion of biomass pyrolysis and gasification'" <gasification at lists.bioenergylists.org <mailto: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 <mailto: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 <http://www.thermogenicx.com> 

Skype: ltt.invent

-----Original Message-----
From: DARYL JOHN SCHERGER < <mailto:daryl.scherger at bigpond.com> daryl.scherger at bigpond.com>
To: gasification < <mailto:gasification at lists.bioenergylists.org> 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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