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Dear Bill,
The high pressure gasification of biomass has been done on a large scale
at the Hawaii project where sugar cane bagasse was fed into a high pressure
system with oxygen feed. The recent offerings from the DOE have requested low
pressure gasification technology to deal with the material handling problems
into and out of the gasification system at pressure. Considering that the DOE
was a major sponsor of the Hawaii project, this is an interesting
philosophical change.
The major benefit to high pressure is not having to compress the gas to
feed into a turbine which operates at 150-350 psi. Compressing the gas after
gasification is a significant parasitic load.
There are ways to deal with the power generation without having to worry
about pressurized systems which work out very economic.
Sincerely,
Leland T. Taylor
President
Thermogenics Inc.
7100-2nd St. NW, Albuquerque, New Mexico 87107
phone 505-761-1454 fax 505-761-1456
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