Combustion – Process of combustion or burner operation – In a porous body or bed – e.g. – surface combustion – etc.
Patent
1992-09-30
1994-09-13
Price, Carl D.
Combustion
Process of combustion or burner operation
In a porous body or bed, e.g., surface combustion, etc.
431170, 502527, 502439, F23D 2100
Patent
active
053463897
ABSTRACT:
This invention includes a multiple-stage combustion apparatus which can be used in a high-temperature environment, such as with a gas turbine. In particular, the invention includes a novel structure for the first stage of such apparatus, and a method of making that first stage. The first stage, which is an ignition stage, is a reactor formed of a metal strip which is coated with a catalyst on only one side. The strip is also corrugated with a herringbone pattern. The strip is then folded back and forth upon itself to form a reactor of a desired cross-section. The reactor has rows of channels that are formed between the layers of the metal. The single coated side of the metal defines the walls of the channels in every other row. The fuel-air mixture that flows through the coated channels is combusted. The fuel-air mixture that flows through the uncoated channels is not combusted, and cools the catalyzed surfaces. The herringbone corrugations prevent the layers of metal from nesting together, and also define zigzag paths for flow of combustion gas. The one or more stages subsequent to the ignition stage can employ a catalyst capable of operating at the very high temperatures present in gas turbines. The subsequent stages can also be non-catalytic. Thus, the first stage provides catalytic ignition, and the subsequent stages complete the combustion.
REFERENCES:
patent: 3992330 (1976-11-01), Noakes et al.
patent: 4576800 (1986-03-01), Retallick
patent: 4601999 (1986-07-01), Retallick et al.
patent: 4711009 (1987-12-01), Cornelison et al.
patent: 4762567 (1988-08-01), Retallick
patent: 4838067 (1989-06-01), Cornelison
patent: 5202302 (1993-04-01), Retallick et al.
Alcorn William R.
Retallick William B.
Cabic Edward J.
Eilberg William H.
Johnson Beverly K.
Price Carl D.
W. R. Grace & Co.,-Conn.
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