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公开(公告)号：US5117636A
公开(公告)日：1992-06-02
申请号：US474394
申请日：1990-02-05
摘要： An improved gas turbine combustor is provided which reduces nitric oxide emissions through premixing of the fuel gas and air and feeding the mixture through a venturi, providing an air cooled passage around the venturi, and extending the passage downstream toward the combustion zone to optimize the stability of the combustion and reduce NO.sub.x and CO emissions.
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公开(公告)号：US4982570A
公开(公告)日：1991-01-08
申请号：US501439
申请日：1990-03-22
申请人： Jennifer Waslo , Masayoshi Kuwata , Roy M. Washam
发明人： Jennifer Waslo , Masayoshi Kuwata , Roy M. Washam
CPC分类号： F23R3/286 , F23D11/005 , F23R3/346
摘要： A dual mode, dual stage low NOx combustor, includes a primary combustion chamber and a secondary combustion chamber separated by a throat region of reduced diameter. Fuel is input into the primary combustors by an annular array of diffusion type nozzles whereas in accordance with the invention fuel is input into the secondary combustor by a central combination premix and diffusion nozzle.
摘要翻译： 双模双级低NOx燃烧器包括由直径较小的喉部区域分开的主燃烧室和二次燃烧室。 燃料通过扩散型喷嘴的环形阵列输入到主燃烧器中，而根据本发明，燃料通过中心组合预混合和扩散喷嘴输入到二级燃烧器中。
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3.发明授权
公开(公告)号：US5487275A
公开(公告)日：1996-01-30
申请号：US987957
申请日：1992-12-11
摘要： An improved gas turbine combustor of the type including primary and secondary combustion chambers with a venturi including a throat portion located therebetween; a plurality of primary fuel injection nozzles secured to a combustor cap in an annular array upstream of the primary combustion chamber; and a centerbody including a secondary fuel nozzle, said centerbody extending from said combustor cap to said secondary combustion chamber; the improvement comprising a plurality of tertiary fuel injection nozzles arranged in a circular array about a longitudinal axis of the combustor, at a location downstream of said venturi throat portion, for injecting fuel into the secondary combustion chamber.
摘要翻译： 一种改进的燃气轮机燃烧器，其包括具有文丘里管的主燃烧室和二次燃烧室，其包括位于其间的喉部; 多个主燃料喷射喷嘴，其固定到主燃烧室上游的环形阵列中的燃烧器盖; 以及包括二次燃料喷嘴的中心体，所述中心体从所述燃烧器盖延伸到所述二次燃烧室; 改进包括在所述文丘里喉部的下游位置处围绕燃烧器的纵向轴线以圆形阵列布置的多个三次燃料喷射喷嘴，用于将燃料喷射到二次燃烧室中。
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4.发明授权Head start partial premixing for reducing oxides of nitrogen emissions in gas turbine combustors 失效用于减少燃气涡轮机中的氮排放的氧化物的头部开始部分预热
公开(公告)号：US5247797A
公开(公告)日：1993-09-28
申请号：US811731
申请日：1991-12-23
申请人： Thomas F. Fric , Masayoshi Kuwata
发明人： Thomas F. Fric , Masayoshi Kuwata
CPC分类号： F23C7/00
摘要： Reducing NO.sub.x emission levels from a gas turbine combustor having a premixer section by mixing a small portion of air into the fuel prior to injection into the premixer section. The portion of diverted air is approximately five percent of the total amount of air injected into the premixer section or such that the resulting fuel-air mixture in the fuel line is approximately half fuel and half air. The injection of air into the fuel line, referred to as "head start partial premixing," is effective to reduce the fluctuations and nonuniformities in the fuel concentration levels which increase NO.sub.x output.
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公开(公告)号：US06269646B1
公开(公告)日：2001-08-07
申请号：US09014952
申请日：1998-01-28
IPC分类号： F02C7228
CPC分类号： F23R3/286 , F23C2900/07001 , F23D2900/14021 , F23R3/20
摘要： A combustor comprises an outer combustor casing defining a plurality of circumferentially adjoining combustion chambers. Each combustion chamber comprises a dome at an upstream end and an outlet at a downstream end. A plurality of pre-mixers are joined to the combustor dome of each respective combustion chamber. The pre-mixers comprise a duct having an inlet at one end for receiving compressed air, an outlet at an opposite end disposed in flow communication with the combustion chamber and a swirler disposed in the duct adjacent the duct inlet for swirling air channeled therethrough. A fuel injector is provided for injecting fuel into the pre-mixer ducts and for mixing with the air in the ducts for flow into the combustion chamber to generate a combustion flame at the duct outlets. A portion of the pre-mixers comprise an altered flameholding capability so as to distribute the resulting combustion flames from the respective portion of the pre-mixers axially downstream with respect to the non-altered pre-mixers so as to reduce the dynamic pressure amplitude of the combustion flames.
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公开(公告)号：US5722230A
公开(公告)日：1998-03-03
申请号：US512581
申请日：1995-08-08
CPC分类号： F23R3/346 , F02C7/26 , F02G3/00 , F23D17/002 , F23D23/00 , F23L7/002 , F23R3/28 , F23R3/343 , F23D2900/00008
摘要： In a gas turbine having a plurality of combustors, each having an annular array of outer fuel nozzles arranged about a center axis, an improved construction is provided wherein each combustor has a center nozzle located on the center axis. Various methods of operating the improved combustor are also disclosed. For example, one method of operating a combustor for a gas turbine wherein the combustor has a plurality of fuel nozzles in an annular array arranged about a center axis and has a center nozzle located on the center axis, and wherein the annular array is supplied with fuel from at least one pre-mix fuel manifold, and further wherein the center nozzle is supplied with fuel from a center nozzle pre-mix fuel manifold includes the steps of: a) at ignition, supplying the center nozzle with fuel from the center nozzle pre-mix fuel manifold and two of the outer fuel nozzles in line with cross-fire tubes with fuel from at least one pre-mix fuel manifold; b) after detecting cross-fire with flame detectors, turning off fuel to the outer two cross-fire nozzles, supplying all fuel to the center nozzle, and accelerating through FSNL to a part load by increasing fuel flow to the center nozzle; c) at the part load, begin transferring some pre-mix fuel away from the center nozzle and staging it to the outer fuel nozzles in the following sequence as total fuel flow is increased: 1) center nozzle+two cross-fire nozzles, 2) center nozzle+non-cross-fire nozzles, 3) all outer fuel nozzles in annular array (no center nozzle), and 4) center nozzle+all outer fuel nozzles.
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公开(公告)号：US5285631A
公开(公告)日：1994-02-15
申请号：US3670
申请日：1993-01-12
摘要： An improved gas turbine combustor is provided which reduces nitric oxide emissions through premixing of the fuel gas and air and feeding the mixture through a venturi, providing an air cooled passage around the venturi, and extending the passage downstream toward the combustion zone to optimize the stability of the combustion and reduce NO.sub.x and CO emissions.
摘要翻译： 提供了一种改进的燃气轮机燃烧器，其通过燃料气体和空气的预混合来减少一氧化氮排放，并且通过文氏管供给混合物，在文氏管周围提供空气冷却通道，并将通道向下延伸到燃烧区域以优化稳定性 的燃烧，并减少NOx和CO排放。
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公开(公告)号：US4515205A
公开(公告)日：1985-05-07
申请号：US560651
申请日：1983-12-12
申请人： Masayoshi Kuwata
发明人： Masayoshi Kuwata
CPC分类号： F28D13/00 , Y10S165/909
摘要： A heat exchanger system exhibits an improved coefficient of heat transfer over a conventional convection heat exchanger while maintaining the beneficial high temperature driving force of conventional convection heat exchanger. A plurality of heat extraction means are provided in heat flow communication with a plurality of shallow beds of particulate matter, which beds are fluidized by a heat-laden gas stream.A method for extracting heat from a heat-laden gas stream is also disclosed.
摘要翻译： 热交换器系统在传统对流热交换器中表现出改善的传热系数，同时保持常规对流换热器的有利的高温驱动力。 提供多个热提取装置，其与多个浅层的颗粒物质热流连通，这些床由加热的气流流化。 还公开了一种从含热气流中提取热量的方法。
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公开(公告)号：US4478646A
公开(公告)日：1984-10-23
申请号：US388562
申请日：1982-06-15
CPC分类号： F23H15/00 , B01J8/0085 , F23C10/18 , F23G5/30
摘要： A means for cleaning a gas distributor of a fluidized bed comprises a pneumatic motion imparting means, such as a gas jet, for imparting motion to a cleaning medium, such that the medium strikes the gas distributor from the gas input side thereof with sufficient momentum to chip or scrape off at least a portion of any particulate matter adhering to a surface thereof. The gas jet preferably operates intermittently to maintain heat exchange efficiency and preferably is allowed to nutate to increase the area cleaned. In the method for cleaning the gas distributor, the cleaning medium is larger than the gas passages of the gas distributor. In another configuration, the cleaning medium is of the same material as the fluidized material and is smaller than the gas passages of the gas distributor, thus allowing at least a portion of the cleaning medium to pass through the distributor. The cleaning medium is replenished from the fluidized material.
摘要翻译： 用于清洁流化床的气体分布器的装置包括气动输送装置，例如气体射流，用于赋予清洁介质运动，使得介质从其气体输入侧以足够的动量撞击气体分配器， 芯片或刮掉附着在其表面上的任何颗粒物的至少一部分。 气体射流优选间歇地操作以保持热交换效率，并且优选地允许脉动以增加清洁的区域。 在清洁气体分配器的方法中，清洁介质大于气体分配器的气体通道。 在另一种构造中，清洁介质与流化材料具有相同的材料，并且小于气体分配器的气体通道，从而允许至少一部分清洁介质通过分配器。 清洁介质从流化材料中补充。
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公开(公告)号：US4409739A
公开(公告)日：1983-10-18
申请号：US298698
申请日：1981-09-02
申请人： Masayoshi Kuwata , Fred W. Staub
发明人： Masayoshi Kuwata , Fred W. Staub
摘要： A gas distributor for fluidizing a bed of particulate matter which provides for minimum dissipation of particle energy from a particulate-laden gas stream on a distributor surface is disclosed. The gas distributor allows the particulate-laden gas stream to contact the surfaces of the distributor at about 90.degree. or 0.degree. which are angles of impact for low erosion. Opposing particulate-laden gas streams are made to contact each other which removes particle kinetic energy while minimizing erosion before fluidizing the bed of particulate matter.A method to minimize erosion of a gas distributor for fluidizing a bed of particulate matter from a particulate-laden gas stream is also disclosed.
摘要翻译： 公开了用于使颗粒物质床流化的气体分配器，其提供了在分布器表面上从颗粒状载气流中最小程度地散发粒子能量。 气体分配器允许含颗粒的气流以约90°或0°的速度与分布器的表面接触，这是低侵蚀角度的冲击角。 使相对于颗粒物的气流彼此接触，其在使颗粒物质床流化之前最小化侵蚀，从而除去颗粒动能。 还公开了一种使气体分布器的侵蚀最小化的方法，用于使颗粒物质床从含颗粒的气流流化。
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