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US 5,393,220 AGranted
Combustion apparatus and process
AssigneePraxair Technology, Inc.
InventorsLudo J. C. Couwels, Eddy J. A. Lauwers
Life of this patent
Estimating the term…
Abstract
Processes and apparatus for combusting fluid fuel, e.g., liquid fuel, in at least two combustion zones, wherein the fluid fuel is partially combusted with a fluid fuel atomizing or dispersing fluid containing oxygen in an initial combustion zone and is completely combusted with oxidant in at least one subsequent combustion zone.
Claims15
A process for controlling the combustion temperature and flame length produced by a burner through combusting fluid fuel in at least two combustion zones, said process comprising:
- (a) ejecting at least one fluid fuel stream through at least one first outlet opening;
- (b) ejecting a fluid fuel atomizing or dispersing fluid containing oxygen at an angle to the flow direction of said at least one fluid fuel stream through at least one second outlet opening;
- (c) atomizing or dispersing said at least one fluid fuel stream with said fluid fuel atomizing or dispersing fluid containing oxygen within a chamber;
- (d) partially combusting said fluid fuel stream with said fluid fuel atomizing or dispersing fluid containing oxygen in said chamber;
- (e) ejecting at least a stoichiometric amount of oxidant through at least one third opening located at a zone downstream of said chamber;
- and
- (f) combusting the partially combusted fluid fuel with said oxidant in said zone downstream of said chamber.
4 more elements
A burner comprising:
- a) an elongated body having at least one inner passageway terminating with at least one first outlet port, said at least one first outlet port being capable of ejecting fluid fuel atomizing or dispersing fluid containing oxygen at an angle with respect to the central axis of said elongated body and having a cross-sectional area smaller than the cross-sectional area of said at least one inner passageway;
- b) a first housing means surrounding and extending beyond the length of said elongated body to form a chamber downstream of said at least one first outlet port and to form a first annular passageway therebetween for passing fluid fuel into said chamber, said chamber being capable of accommodating at least partial combustion of fluid fuel;
- and
- c) a second housing means surrounding said first housing means to form a second annular passageway therebetween for introducing oxidant downstream of said chamber for further combustion of fluid fuel.
1 more element
A burner comprising:
- a) an elongated body comprising at least one inner passageway for passing fluid fuel atomizing or dispersing fluid containing oxygen;
- b) a first housing means surrounding and extending beyond the length of said elongated body to form a chamber capable of partially combusting fluid fuel and an annular passageway therebetween along the length of said elongated body for passing fluid fuel into said chamber, said chamber having an internal wall surface in the shape of a cone or a trumpet end;
- and
- c) a second housing means surrounding said first housing means to form an additional annular passageway for introducing oxidant, said second housing means comprising a discharge end section having an internal wall surface in the form of a cone or a trumpet end, said discharge end section at least partially covering or surrounding said chamber so that any liquid provided in said chamber and said discharge end section is allowed to flow out of said chamber and said discharge end section.
1 more element
Dependencies are inferred from the claim text.