Dear All:
I spent 5 years of my valuable life and 5 million of your valuable tax
dollars developing a high pressure oxygen gasifier at the Solar Energy
Research Institute (1980-1985) now NREL. We focused primarily on the
chemistry and kinetics of the gasifier.
In retrospect, if we had spent half the money on high pressure feeder
research we would have been much farther ahead.
T'aint easy and there is no single solution, but it CAN be done. Check with
the veterans Tom Miles and others...
TOM REED
----- Original Message -----
From: "AJH" <andrew.heggie@dtn.ntl.com>
To: <gasification@crest.org>; "Stoves" <Stoves@crest.org>
Sent: Monday, August 05, 2002 4:35 PM
Subject: Re: GAS-L: feeding biomass into pressurised systems
On Sat, 3 Aug 2002 09:31:10 -0700, "Tom Miles" <tmiles@trmiles.com>
wrote:
>Andrew,
>
>You seem to have touched a nerve. :-)
Didn't mean to :-(
Let's stay out of internecine disputes and see what I can learn from
all this.
>
>Just last week I encountered cases where individuals and companies
involved
>in that project have taken the results of their experience and carried them
>further in the past five years to improve their systems. They have done
that
>with investment of their own funds and energies and their activities are
not
>for me to discuss here. You'll just have to take that on faith.
I am happy to do this, I have an ongoing bad experience with research
based on an original idea of mine, it may yet get to fruition.
>
>It's far more productive to move on and explore or revisit the variety of
>technical solutions that we have available, as you are attempting to do.
>You've listed a number of feeding options and concepts. Each have been
>tested in various forms at both the small and large scales. Some are
>still under development and testing by various entities and all merit
>further discussion.
OK but what is your opinion?
The screw and extrusion type options seem power hungry to me, as they
induce a lot of friction, augering from a sealed hopper has flash back
worries, a double bell hopper has shutting problems but a hybrid seize
and bell hopper looks cheap and promising to me, also allows gravity
to do the work. I also like the idea of a bolt and chamber device as
the leakage path is only open instantaneously.
AJH
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