Low emission combustor with fuel flow controlled primary air flo

Details Low emission combustor with fuel flow controlled primary air flo Low emission combustor with fuel flow controlled primary air flo

1975-04-14

1977-02-08

Croyle, Carlton R.

Power plants

Combustion products used as motive fluid

60 3923, 60 3965, 60DIG11, F02G 300, F02C 300

Patent

active

040065898

ABSTRACT:
New combustors, and methods of operating same, which produce lower emissions, particularly lower emissions of nitrogen oxides and CO, are provided. Said combustors are provided with a first combustion region and an adjacent downstream second combustion region. A first stream of air is introduced, either radially, axially, or tangentially, into said first combustion region and the amount of said air is varied in accordance with fuel flow to said first combustion region. A second stream of air is introduced tangentially into said first combustion region. A third stream of air is introduced tangentially into said second combustion region. In preferred embodiments of the invention the air stream pressure drop across an air assist fuel nozzle is varied in accordance with fuel flow to said nozzle.

REFERENCES:
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patent: 2579614 (1951-12-01), Ray
patent: 2616794 (1952-11-01), Krejci
patent: 2638745 (1953-05-01), Nathan
patent: 2655787 (1953-10-01), Brown
patent: 2659201 (1953-11-01), Krejci
patent: 2773350 (1956-12-01), Barrett et al.
patent: 2828609 (1958-04-01), Ogilvie
patent: 3283502 (1966-11-01), Lefebure
patent: 3306333 (1967-02-01), Mock
patent: 3490230 (1970-01-01), Pillsbury et al.
patent: 3691762 (1972-09-01), Ryberg et al.
patent: 3763650 (1973-10-01), Hussey et al.

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