----- Original Message -----
Sent: Monday, September 16, 2002 3:37
PM
Subject: Tar Standards and Codes
Dear Thomas and all:
Thomas puts it very well when he
says...
> The problem
about this protocol is that it is initiated by researchers and driven forward
by researchers.
A second problem is that the EEC (with tons of
money) is mostly focussed on fluidized bed gasifiers which make tars in the
raw gas of 10,000-50,000 ppm. When they reduce them by a factor of 100
they think they are doing well. But downdraft gasifiers have only initially
100-1000 ppm tar in the raw gas when properly operated. Tar measurements
suitable for the first case don't have the sensitivty required for the second
case.
A third problem is that money and time is no
object... the more the better. While those of us in small gasifiers want
to find a gas that is clean enough for engines and don't care too much about
the exact analysis of the tar.
So, we should all be interested in high
sensitivity, low cost, fast tests and many of us are working on it. The
Bacharach Smoke Meter (cost $75) comes pretty close to a good quality test and
I have been trying to make it quantitative with some success.
Yours
truly,
TOM
REED
BEF GASWORKS
----- Original Message -----
Sent: Monday, September 16, 2002 2:39
AM
Subject: Re: GAS-L: Standards and
Codes
Dear Kollol
That is a very relevant subject you
discuss.
In EU there have been a work ongoing on
stardadisation on tar measurement going on for some years.
Search on "Tar protocol" to get more
information.
The problem about this protocol is that it is
initiated by researchers and drive forward by researchers.
Do you have the tiem to explain how you are
used to conduct performance test?
New input would be very helpfull for us in the
biomass field.
Thomas KOch
----- Original Message -----
Sent: Monday, September 16, 2002 9:54
AM
Subject: GAS-L: Standards and
Codes
Dear ALL,
1.0 I wish to know the internationally
accepted standard codes that are available for conducting the
"Performance Test" of a bio gasifier - whether it be moving bed, fluidised
bed or entrained bed type. Can anyone help?
I understand that ASME has a PTC - 47
which is meant for an IGCC units. But have no idea as to how much of this
can be adopted in checking the performance of a biomass
gasifier? I also understand that ASME had a code for
conducting Performance Tests on a coal based producer gas plant - I think
it was PTC - 16, but I believe this code has been with
drawn for sometime.
If someone is working on such a code - good !
But if this is not so, then isn't it time that
a PTC for biomass gasifiers be drawn up ?
2.0 Further, the petroleum and
petrochemical industry rely on API for standards, codes
and recommended practices. Isn't it time that such things also be
introduced in this industry (biomass gasification) so that
there are guidelines for buyers of biomass gasifiers to go by? I am
sure this will be interest of the industry and will keep away a lot of
"tall claims and counter claims"once the industry sees such
internationally accepted standards and codes.
Comments please !!
K.Dey.
