초록 ▼

A fluid atomizer and spraying means which is made up of: a mixing chamber 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 through which the mix

A fluid atomizer and spraying means which is made up of: a mixing chamber 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 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 frustro-conical passageway which contains support-spacer means which is generally parallel to the direction of flow through the passageway. At least one such support-spacer means is provided which extends from the end of the passageway proximate to the mixing chamber to the end of the passageway 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.

대표청구항 ▼

A method of combusting liquid fuel with reduced discharge of nitrogen oxides which comprises: atomizing liquid fuel with an atomizing gas to form a mixture of atomized fuel droplets in said atomizing gas; forcing said mixture of said atomized liquid fuel droplets in said atomizing gas through a circ

A method of combusting liquid fuel with reduced discharge of nitrogen oxides which comprises: atomizing liquid fuel with an atomizing gas to form a mixture of atomized fuel droplets in said atomizing gas; forcing said mixture of said atomized liquid fuel droplets in said atomizing gas through a circumferential substantially annular area containing a plurality of diverging frustroconical circumferentially elongated passageways, each passageway separated from an adjacent passageway by a pier, wherein the piers occupy a minor portion of the circumferential annular area and the passageways occupy a major portion of the circumferential annular area; ejecting streams of the mixture from the passageways to form a non-uniform axially diverging spray comprising a multiplicity of fuel-rich regions, corresponding to the locations of said passageways, interspersed with a multiplicity of fuel-lean regions, corresponding to the locations of said piers, so that the fuel-rich and fuel-lean regions, taken together, comprise a substantially conical region which has non-uniform bulk density and non-uniform composition about its periphery; and contacting the non-uniform axially diverging spray of the mixture of fuel and atomizing gas with at least a sufficient amount of oxidizing gas to combust at least a substantial portion of the fuel under conditions conducive to the combustion of the fuel with oxygen in the oxidizing gas.