Abstract:
In a method of combusting fuel in the combustion chamber (11) of a gas turbine engine, fuel and a first predetermined amount of air are injected into the combustion chamber to form a fuel-rich mixture, and a second predetermined amount of air is injected downstream, to mix with the mixture and form a lean fuel-air mixture. The combustion chamber (11) has a fuel injector (10) and inlets (17, 19) downstream thereof to allow the air to be injected.
Abstract:
A staged combustion method which can provide reduced carbon monoxide generation along with reduced nitrogen oxides generation wherein the primary stage fluids and the secondary stage fluid are provided into the combustion zone in a defined momentum ratio which departs from unity.
Abstract:
A combustion method which employs highly fuel-rich combustion (R) and highly fuel-lean combustion (L) separately and simultaneously within a combustion zone (2) followed by intermixture of their resulting gases within the combustion zone for further combustion.
Abstract:
A process and apparatus for ultra-low pollutant emission combustion of fossil fuel wherein an elongated cyclonic primary combustion chamber (10) has a cross-sectional area about 4% to about 30% that of an elongated cyclonic secondary combustion chamber (30) and a volume about 1% to about 20% of the combined primary and secondary combustion chamber volume. A first fuel portion of about 1% to about 20% of the total fuel and primary combustion air in an amount selected from about 40% to about 90% and about 140% to about 230% of the stoichiometric requirement for complete combustion of the first fuel portion is introduced into the primary combustion chamber (10). A second fuel portion of about 80% to about 99% of the total fuel ist introduced into the secondary combustion chamber (30) with secondary combustion air in an amount of about 150% to about 260% of the stoichiometric requirement for complete combustion of the fuel. In preferred embodiments cyclonic flow is maintained through the combustor.
Abstract:
본 발명은 단계적 연료 주입된 버너(fuel-staged burner)를 사용하는 증기 메탄 개질기 또는 에틸렌 분해 퍼니스에서의 교정된 화염(straightened flame)을 생성하기 위한 방법 및 퍼니스에 관한 것이다. 단계적 연료 주입을 사용하여 NO x 방출을 감소시킬 수 있다. 교정된 화염을 생성하기 위한 기준을 제공한다. 이러한 기준은 산화제 도관 기하구조 및 퍼니스 기하구조에 관한 것이다. 또한, 이러한 기준을 달성하기 위한 퍼니스 및/또는 버너를 변형시키기 위한 기법이 제공된다.
Abstract:
High efficiency processes for producing olefins, alkynes, and hydrogen co-production from light hydrocarbons are disclosed. In one version, the method includes the steps of combusting hydrogen and oxygen in a combustion zone of a pyrolytic reactor to create a combustion gas stream, transitioning a velocity of the combustion gas stream from subsonic to supersonic in an expansion zone of the pyrolytic reactor, injecting a light hydrocarbon into the supersonic combustion gas stream to create a mixed stream including the light hydrocarbon, transitioning the velocity of the mixed stream from supersonic to subsonic in a reaction zone of the pyrolytic reactor to produce acetylene, and catalytically hydrogenating the acetylene in a hydrogenation zone to produce ethylene. In certain embodiments, the carbon efficiency is improved using methanation techniques.
Abstract:
A method comprises providing a combustion apparatus having an outer vessel and an inner conduit. The outer vessel has a first wall that defines an internal volume. The inner conduit is at least partially positioned within the internal volume and provides a fluid passageway that is in communication therewith. The method further comprises introducing oxygen into the internal volume in a manner such that the oxygen swirls within the internal volume and around the inner conduit. Furthermore, the method comprises introducing fuel into the internal volume, and combusting the fuel and oxygen at least partially therewithin. The combustion of the fuel and oxygen produces reaction products and the method further comprises discharging at least some of the reaction products from the internal volume via the fluid passageway of the inner conduit.
Abstract:
A method comprises providing a combustion apparatus having an outer vessel and an inner conduit. The outer vessel has a first wall that defines an internal volume. The inner conduit is at least partially positioned within the internal volume and provides a fluid passageway that is in communication therewith. The method further comprises introducing oxygen into the internal volume in a manner such that the oxygen swirls within the internal volume and around the inner conduit. Furthermore, the method comprises introducing fuel into the internal volume, and combusting the fuel and oxygen at least partially therewithin. The combustion of the fuel and oxygen produces reaction products and the method further comprises discharging at least some of the reaction products from the internal volume via the fluid passageway of the inner conduit.