On Wed, 7 Aug 2002 12:19:18 -0700, "Tom Miles" <tmiles@trmiles.com>
wrote:
>What is your specific target in terms of feedstock, type of gasifier, location of
>feed, type of feedstock distribution in the reactor, size and dimensions of the
>reactor, pressure, purge gas (if used) capacity, gas quality and cost? We will all
>have slightly different answers to the same question.
I guess rice hulls would be a feedstock that would cause me problems
with batch loading, low bulk density, high ash, so continuously
feeding them would be a good case. I have no access to any but I know
my burner will not hold as much sawdust as it does with chunks of
wood.
Mine is not a gasifier it is a simple, blown, burner. What I have
found is that using a feed tube as a magazine allows offgas and
combustion products to rise in the tube. Thomas K has suggested a
screw feed as being most appropriate, I think that in order to seal a
screw or piston plug device must deform the raw material, this means
putting work into it. The bell hopper and bolt action seem not to need
to deform the feedstock and I thought would be less power hungry,
though they then need better mechanical seals.
>
>RD&D in recent years would seem to indicate that 20MWe might be a minimum size for
>IGCC power generation. Is that the scale that you are considering?
There'll not be much market for bits of an 11MW(e) IGCC plant going
spare then? :-(
20MW(e) suggests about 100MW(t), I am looking at 3kW(t) :-), though a
friend has built one to my design of ~100kW(t).
I really was looking to pointers to how different feeders worked in
layman's terms.
AJH
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