[Gasification] star valve sources/experience?

[LINVENT at aol.com]

Star valves also bypass gas through the empty half of the rotating star. They 
do not like larger particles as they jam between the blade and the outer 
housing. Most of the star valves I have used have had cast iron blades against a 
machined cast iron housing which has made it difficult to feed anything other 
than fine material into the reactor and this is not good for downdraft systems 
as they tend to occlude when fine materials are used. Not using slide gates or 
star valves has allowed multiple fuels of various densities, dimensions, 
compressibilities,   to be successfully used into a pressurized system with low 
maintenance, high reliability and under reasonably elevated pressures. 



Sincerely,
Leland T. Taylor
Leland T."Tom" Taylor
President
Thermogenics Inc.
7100-F 2nd St. NW Albuquerque, NM 87107
Phone:505-463-8422 Fax:505-268-9206 (call first)
Web:thermogenics.com



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