Chemistry: physical processes – Physical processes – Crystallization
Patent
1975-04-07
1976-11-23
Tayman, Jr., James H.
Chemistry: physical processes
Physical processes
Crystallization
23284, 423212, 431 5, 431 8, 431 9, 431353, 431174, 110 8A, 60303, F23G 706
Patent
active
039934497
ABSTRACT:
A low pressure loss, two stage burner is provided wherein a portion of the effluent gases are admitted to a primary burner defining a primary combustion zone, recirculated within the primary combustion zone, mixed with a combustible fuel in the primary combustion zone and ignited by means of an ignition system. The remainder of the effluent gases bypass the primary burner and flow into a secondary burner defining a secondary combustion zone. Gases entering this zone are mixed with a combustible fuel and ignited by means of the combustion occurring in the primary combustion zone. The effluent gases admitted to the secondary combustion zone have turbulent recirculation vortices generated therein in order that the gases will remain closely spaced to the secondary burner sidewall as they travel generally axially through the secondary combustion zone. Gases exiting from the primary combustion zone travel axially through the secondary combustion zone and are returned to atmosphere at the exit end thereof along with those gases admitted to the secondary burner for combustion. A small portion of the effluent gases are advantageously employed to continuously cool the primary burner and the secondary burner may be lined with a refractory material to enhance combustion in the secondary combustion zone.
REFERENCES:
patent: 2889002 (1959-06-01), Kocee
patent: 3788065 (1974-01-01), Markowski
patent: 3872664 (1975-03-01), Lohmann et al.
patent: 3885919 (1975-05-01), Pillard
City of North Olmsted
Tayman, Jr. James H.
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