On 12/11/2012 7:00 AM, [email protected] wrote:
At 40c/lb that's close enough to $1/kg or $1000/tonne.
If that char is being used for agricultural purposes at that price it's
an expensive soil conditioner. I wonder if that's the price they need
to make the pyrolysers work financially after selling the heat or a
price they can charge for char through a subsidy.
Message: 5
Date: Sat, 10 Nov 2012 20:37:55 -0800
From: "Tom Miles"<[email protected]>
To:<[email protected]>, "'Discussion of biomass pyrolysis and
gasification'" <[email protected]>
Subject: Re: [Gasification] Sweden's trash project / Japanese trash
project
Message-ID:<[email protected]>
Content-Type: text/plain; charset="iso-2022-jp"
Mark,
The Japanese unit looks like it might be a small rotary pyrolyzer that is
heated by burning the offgas. In that case we would expect to see a char
product and a clean stack.
Ebara is the main waste to energy company that uses gasification in Japan.
Burn the gas directly into a close coupled boiler.
Japan funded extensive waste gasification in the 1990s. They tried several
different types of gasifiers. Ebara is one of the few companies that still
used gasification for waste. There are several companies that make rotary
pyrolyzers. Last year in Kyoto we did not see evidence that they are used
much for biochar production. Most biochar seems to be made by very small
scale stirred bed rice husk gasifiers by Kansai Corporation.. The gas is
burned above the stirred bed and used to heat water for space heating or
process heat. The biochar (called ?kuntan?) sells for about $0.40/lb.
Tom
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