RE: GAS-L: maximum pressure

[Luiz Alberto Magri <luizmagri@yahoo.com>]

Jack,

Maybe just a minor reason, but generally speaking,
compressing of cold air is likely to spend far less
energy than compressing of hot gases, and besides
intercooling could be also employed for the air
stream. But there is another, yet important
technological issue remaining under this scenario.
When we are going to integrate a gas turbine into a
gasification pattern, there is no easy way to get rid
of the compressor section. Any attempt to do that
would lead to a complete redesign of the gas turbine
itself - not a simple task. The best we can do is to
bleed the air from the compressor section into the
gasifier. Other options I can imagine are: using of
the gas turbine under partial load only (efficiency
becomes horrible); bleeding the excess air into the
atmosphere (again not so good for the efficiency);
using of not standard gas turbine models (if we are
lucky enough to have one).

Best regards,

Luiz Magri - Rio de Janeiro

> -----Original Message-----
> From: JackProot@aol.com [mailto:JackProot@aol.com]
> Sent: Wednesday, February 06, 2002 3:36
> To: gasification@crest.org
> Subject: Re: GAS-L: maximum pressure
(...)
> - compressing the gas after gasification requires
> energy, OK. But so does
> the compression of air before gasification. Slightly
> smaller volume maybe
> but then consider the unavoidable leaks ...



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