[Gasification] close coupling, Paul Anderson

[Kevin Chisholm]

Dear Toby

I would suggest that you should become a Dirty Gasser. ;-)

The reason is that clean gas gives a flame which is virtually non-luminous,
and has very poor radiant heat transfer characteristics. So-called "dirty
gasifier gas" is high in constituents that yield luminous flames, and would
be expected to have very much superior radiant heat transfer
characteristics. While the gas is "dirty", the burn can be clean, if the 
right burner is selected.

What would you think about an updraft gasifier, with a suction blower that
discharged pressurized gas to a burner in the boiler?

Best wishes,

Kevin
----- Original Message ----- 
From: "Toby Seiler" <seilertechco at yahoo.com>
To: <gasification at listserv.repp.org>
Sent: Monday, October 09, 2006 5:15 PM
Subject: Re: [Gasification] close coupling, Paul Anderson


Paul,

  I ask a question when the subject of "clean" gas was recently brought to
the gasification list but may not have stated it correctly.  My interest is
not making gas for use in internal combustion or turbine direct firing, but
creating a cleaner burn in a secondary burn catalyst and recovery of the
energy in a boiler.  I hope to be efficient in infrared transfer because of
the high delta t.. High temp combustion is desired without high flow.

  The question that I have is; is it advantageous to uncouple gas production
from secondary burn and clean it up?  Is condensing out non-combustion
matter before a secondary high temp combustion going to lower emissions or
acid condensation in the stack condenser?  I'm not a chemist but wonder if
"clean" gas is better (and worth the effort) than "dirty" gas!  Please help
me decide wether I am a clean or dirty gasifier enthusiast.

  Toby J. Seiler