Burner assembly with fuel pre-mix and combustion temperature con

Details Burner assembly with fuel pre-mix and combustion temperature con Burner assembly with fuel pre-mix and combustion temperature con

1992-12-22

1995-02-14

Jones, Larry

Combustion

Combustion products return structure

Recirculation about mixing or combustion chamber wall or baffle

431 2, 431 12, 431350, F23L 1300

Patent

active

053889851

ABSTRACT:
A burner assembly has a combustion chamber in which combustion takes place in an elongate centrally disposed combustion tube. An outer housing encases the combustion tube and provides an annular space between an inner wall of the housing and the combustion tube. Part of the exhaust gases exiting from the combustion tube are diverted from the downstream end thereof to be returned through the annular space to the upstream end of the combustion tube. Fuel is injected into the diverted exhaust gases, volatilized when in liquid form and mixed with the diverted gases. The fuel and gas mixture is further combined with a buffer gas and becomes entrained into and mixed with a high velocity of combustion air which is injected into the upstream end of the combustion tube. The flame temperature may be monitored and the quantity of the buffer gas added may be controllably varied based on temperature readings from the monitoring process to minimize the generation of nitrous oxides.

REFERENCES:
patent: Re29496 (1977-12-01), Dydzyk
patent: 3652194 (1972-03-01), Bailey
patent: 3705784 (1972-12-01), Reichhelm et al.
patent: 4298337 (1981-11-01), Butler et al.
patent: 4600377 (1986-07-01), Musil
patent: 4995807 (1991-02-01), Rampley et al.
patent: 5092761 (1992-03-01), Dinicolantonio
patent: 5102328 (1992-04-01), Robinson
patent: 5145359 (1992-09-01), Anacona et al.
patent: 5154596 (1992-10-01), Schwartz et al.
patent: 5192204 (1993-03-01), Musil
patent: 5275554 (1994-01-01), Faulkner

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