Combustion – Process of combustion or burner operation – Burning waste gas – e.g. – furnace gas – etc.
Patent
1995-11-13
1997-10-14
Yeung, James C.
Combustion
Process of combustion or burner operation
Burning waste gas, e.g., furnace gas, etc.
431 12, 431 19, 431 75, 422168, 422203, 422204, F23D 1400
Patent
active
056765363
ABSTRACT:
Raw gas burner that maximizes fuel efficiency of the burner, minimizes residence time, and reduces or eliminates flame contact with the process air or gas in order to minimize NOx formation. Process air flow such as from the cold side of a heat exchanger associated with thermal oxidizer apparatus is directed into and around the burner. The amount of process air flowing into the burner is regulated based upon the pressure drop created by the burner assembly. The pressure drop is, in turn, regulated by one or more of an external damper assembly, an internal damper assembly, and movement of the burner relative to the apparatus in which it is mounted. To ensure thorough mixing of the fuel and process air, process air entering the burner is caused to spin by the use of a swirl generator. The fuel/process air mixture proceeds into the combustion section of the burner, where the swirling flow is caused to recirculate to ensure complete combustion of the fuel in the combustion chamber. The mixture of burned fuel and process gas transfers its energy flamelessly to the process gas circulating outside the burner combustion chamber, and is hot enough to ignite the process gas there, which then burns separately from the burner combustion chamber, such as in the main combustion enclosure of the thermal post-combustion device.
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Anderson Kim
Charamko Serguei
McGehee Patrick
Ruhl Andreas
Baker William L.
Lemack Kevin S.
Leon Craig K.
W.R. Grace & Co.-Conn.
Yeung James C.
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