Dear Jai
----- Original Message -----
From: jai balwanshi
To: Discussion of biomass pyrolysis and gasification
Sent: Tuesday, October 11, 2011 2:05 AM
Subject: Re: [Gasification] reducing temp. of gasification
we have many method to reduce tar but i want which is most simplest.
# Your very simple, but very important question was: "What is the simplest
way to reduce tar?" I feel that the short answer is "Burn it."
# Support for this simplistic answer is based on the fact most gasifiers
producing low tar woodgas seem to operate with a high reaction zone
temperature. The trick is to burn the tars evolved by pyrolysis, while burning
the least amount of char. This is accomplished in the Imbert Style of gasifier
by optimal placement and sizing of the air jets in relation to the hearth size
and location for the particular kind of fuel employed..
# It would be very helpful to the List if you would be kind enough to outline
some of the many methods you have to reduce tars.
# Thanks!
Kevin
Jai Balwanshi
Assistant Professor
Mechanical Engineering Department
VITS - Indore
Contact No. 9713281992
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From: Pete & Sheri <[email protected]>
To: 'Discussion of biomass pyrolysis and gasification'
<[email protected]>
Sent: Tuesday, 11 October 2011 8:39 AM
Subject: Re: [Gasification] reducing temp. of gasification
Hello, Greg.
I know that the correct solution to tar is to keep the reactor temp up,
but, just in case,
how do YOU test for tar?
Pete Stanaitis
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-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Greg
Manning
Sent: Monday, October 10, 2011 3:13 PM
To: jai balwanshi; Discussion of biomass pyrolysis and gasification
Subject: Re: [Gasification] reducing temp. of gasification
Greetings, Jai, and list members.
Reducing tars in gas output, is really quite simple, design a gasifier
that works correctly for the desired feedstock is the main method,
however, you can also design a poorly built gasifier, and use many
cleaning filters after the gasifier, in the gas output pipes.
But really, one must understand what "tars" are, and at what internal
temperature the gasifier runs at, once this is known, then the design
can be re-designed to achive the correct temperature to reduce the
tars BEFORE they enter the gas output area.
In other words, generally 2 or more gasifiers must be built (or the
original one modified) to the point of acceptable level of tars within
the gas output.
Greg Manning
Canadian Gasifier Ltd.
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