V-jet atomizer

Details V-jet atomizer V-jet atomizer

B - Operations, Transporting

05

B

B05B 7/04 (2006.01) F23D 11/10 (2006.01)

Patent

CA 2187745

A fluid atomizer and spraying means which is made up of a mixing chamber (16) into which the fluid to be atomized and the atomizing gas are introduced and in which the fluid is admixed with and dispersed in the gas; a generally conical nozzle means extending from the mixing chamber (16) through which the mixed fluid and gas are forced; and a chamber into which the atomized mixed fluid and gas is sprayed. The conical nozzle means is suitably a relatively narrow frusto-conical passageway (28) which contains support-spacer means (34, 36, 38) which is generally parallel to the direction of flow through the passageway (28). At least one such support-spacer means (34, 36, 38) is provided which extends from the end of the passageway (28) proximate to the mixing chamber (16) to the end of the passageway (28) proximate to the chamber into which the mixture is sprayed. The preferred use of this apparatus is in atomizing fuel oil with steam and spraying such atomized mixture into a combustion chamber where it is contacted with combustion air. The amount of effluent NOX is reduced and limited by the use of this configuration by creating alternating fuel-rich and air-rich spatial distribution, and allowing the amount of stoichiometric excess air to be severely limited, while causing the substantially complete combustion of the fuel oil

Atomiseur/pulvérisateur comprenant: une chambre de mélange (16) où sont introduits et intimement mélangés le fluide à atomiser et le gaz atomiseur, de façon à disperser le premier dans le second: un gicleur principalement conique attenant à la chambre de mélange (16) et que traverse le mélange, et une chambre de vaporisation du mélange. Le gicleur conique présente un passage tronconique étroit (28) qui contient des supports-entretoises (34, 36, 38) sensiblement parallèles à la direction du flux dans le passage, dont l'un au moins (34, 36, 38) s'étend d'une extrémité à l'autre du passage (28). Cet appareil est surtout fait pour atomiser puis pulvériser un mélange mazout/vapeur dans une chambre de combustion où il entre en contact avec l'air comburant. La quantité effluente de NOX se trouve réduite de par cette configuration qui crée alternativement une distribution spatiale de gaz riches et de gaz pauvres, tout en limitant strictement l'excès d'air stoechiométrique, et assure une combustion quasi intégrale du combustible.

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