Method for positioning superheaters in biomass burning steam generators, and steam generator
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 6, 2004
Grant Date -
Oct 30, 2003
app pub date -
Apr 17, 2003
filing date -
Apr 24, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method for positioning superheaters (2, 3, 4, 5) in biomass burning steam generators, and a steam generator. The steam generator comprises a combustion chamber (1), a flue gas duct (6), a steam circuit (7), and the superheaters (2, 3, 4, 5) positioned for minimizing corrosion at a high temperature. The steam generator is fitted with at least two superheaters (2, 3, 4, 5), whose positioning in the flue gas duct (6) and serial arrangement in the steam circuit (7) are effected in such a way that the superheater's or superheaters' heat transfer surface has its surface temperature remaining below the melting point of KOH, 406.degree. C. (corresponds to a steam temperature of about 350-380.degree. C.) down to the point in the flue gas duct (6), at which the flue gases' temperature has fallen to 750.degree. C. While the flue gases are within the range of less than 750.degree. C., the final superheating is effected to a higher temperature without significantly increasing the contamination and corrosion hazard for superheater surfaces.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully