Compressibility factor is simply an adjustment to the Ideal Gas law
which gives a relationship between volume, temperature and pressure for
a given gas or mixture of gases. "Z" as it is known is generally 1.000
for "non-associating" gases up to 2-3 atmospheres of pressure (~45
psig). "Non-associating" here means relatively non-polar, which
producer gas probably is. I ran a typical producer gas composition
through my simulation software which computes Z rigorously from viral
coefficients. Z computed as 0.9995 at 1.0 psig and 800°F (our typical
reactor outlet conditions). Thus for all practical purposes, you'll
probably be good enough for compressor equipment sizing assuming Z =
1.000 for producer gas up to around 300° F and 400 psig.
But having said all of this, Ken is still right. I also have yet to
compute an economic solution to producer gas compression under any
"real-world" circumstance. Although, there are some folks out there
working on producer gas FT. These new catalyst formulations are
apparently not affected by the presence of the N2. And the World
continues..........
Mark Loftin, B.S.Ch.E.
PHG Energy, LLC
Associated Physics of America, LLC
Greg Manning wrote:
factor is "0" due to limitations within the gas's composite structure, or
in other words, the cost of compression is greater than the offset of making
producer gas in the first place...
Greg Manning,
Canadian Gasifier Ltd.
Building Hi-Performance Gasifiers, Since 2001
Brandon, Manitoba, Canada
1 (204) 726-1851
-----Original Message-----
From: [email protected]
[mailto:[email protected]]on Behalf Of Mark
Anderson
Sent: Monday, August 23, 2010 1:47 AM
To: [email protected]
Subject: [Gasification] Compressibility Factor
Hey
Does anyone know or can they work out a compressibility factor ( Z factor)
for a typical producer gas from a down draft biomass system?
Mark
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