Combustion – Combustion products return structure
Patent
1986-04-01
1987-06-16
Dority, Jr., Carroll B.
Combustion
Combustion products return structure
126 91A, F23J 502
Patent
active
046733485
ABSTRACT:
Oxygen is introduced through oxygen supply line (5) into an annular gallery (6) which it leaves at high velocity through annular channel (7). The outlet of the annular channel (7) is shaped so that, by virtue of the Coanda effect, the oxygen travels towards the downstream end of the burner (1) substantially parallel to the wall of the tubular body (2). Combustion gas from combustion chamber (13) is induced between support bars (4) into the tubular body (2) by the flow of oxygen and mixes with the oxygen and subsequently with natural gas introduced through fuel supply line (8). The mixture burns at the outlet (9) of the fuel supply line (8). The maximum temperature reached by the gas leaving the burner (1) is substantially lower than that which would be obtained by a conventional oxy-fuel flame. The burner may be used in radiant tubes.
REFERENCES:
patent: 3570471 (1971-03-01), Lazaridis
patent: 3920383 (1975-11-01), Kerr
patent: 4401099 (1983-08-01), Collier
Dudill Roger
Riley Eric K.
Young Philip J.
Air Products and Chemicals Inc.
Dority Jr. Carroll B.
Innis E. Eugene
Simmons James C.
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