公开(公告)号：US5180300A

公开(公告)日：1993-01-19

申请号：US681441

申请日：1991-04-03

Applicant: James E. Hovis ,  Harry P. Finke

Inventor： James E. Hovis ,  Harry P. Finke

IPC: F23C6/04 ,  F23C7/00 ,  F23C9/00 ,  F23L15/02

CPC classification number: F23L15/02 ,  F23C6/045 ,  F23C7/00 ,  F23C9/00 ,  F23C2201/30 ,  Y02E20/348

Abstract: A regenerative burner having heat storage units with combustion effluent/combustion air ducts therethrough, fuel intake means and a burner body, wherein the burner is designed to suppress NOx formation and to control flame shape and characteristic in the regenerative system during combustion. The regenerative burner may include a burner baffle, or may include a plurality of gas jets entrained in generally converging fashion for control of the flame characteristics and shape dispositive of NOx formation. The burner may provide for staged combustion, either by means of sequential fuel injection or sequential provision of combustion air, or the burner may depress NOx formation by vitiation of combustion air with products of combustion. The present regenerative burners suppress NOx formation yet preserve the remaining characteristic features of regenerative systems.

Abstract translation: 一种蓄热式燃烧器，其具有通过燃烧流出物/燃烧空气导管的蓄热单元，燃料进气装置和燃烧器本体，其中燃烧器被设计成抑制燃烧期间的NOx形成和控制再生系统中的火焰形状和特性。 蓄热式燃烧器可以包括燃烧器挡板，或者可以包括以大致会聚的方式夹带的多个气体射流，用于控制火焰特性和形成NOx形状的形状。 燃烧器可以通过顺序燃料喷射或顺序地提供燃烧空气来提供分级燃烧，或者燃烧器可以通过燃烧产物燃烧的燃烧空气来抑制NOx的形成。 本发明的再生式燃烧器抑制了NOx的形成，并保留了再生系统的剩余特征。

公开(公告)号：US4983118A

公开(公告)日：1991-01-08

申请号：US168892

申请日：1988-03-16

Applicant: James E. Hovis ,  Harry P. Finke

Inventor： James E. Hovis ,  Harry P. Finke

IPC: F23C6/04 ,  F23C7/00 ,  F23C9/00 ,  F23L15/02

CPC classification number: F23C7/00 ,  F23C6/045 ,  F23C9/00 ,  F23L15/02 ,  F23C2201/30 ,  Y02E20/348

Abstract: A regenerative burner having heat storage units with combustion effluent/combustion air ducts therethrough, fuel intake means and a burner body, wherein the burner is designed to suppress NOx formation and to control flame shape and characteristic in the regenerative system during combustion. The regenerative burner may include a burner baffle, or may include a plurality of gas jets entrained in generally converging fashion for control of the flame characteristics and shape dispositive of NOx formation. The burner may provide for staged combustion, either by means of sequential fuel injection or sequential provision of combustion air, or the burner may depress NOx formation by vitiation of combustion air with products of combustion. The present regenerative burners suppress NOx formation yet preserve the remaining characteristic features of regenerative systems.

Abstract translation: 一种蓄热式燃烧器，其具有通过燃烧流出物/燃烧空气导管的蓄热单元，燃料进气装置和燃烧器本体，其中燃烧器被设计成抑制燃烧期间的NOx形成和控制再生系统中的火焰形状和特性。 蓄热式燃烧器可以包括燃烧器挡板，或者可以包括以大致会聚的方式夹带的多个气体射流，用于控制火焰特性和形成NOx形状的形状。 燃烧器可以通过顺序燃料喷射或顺序地提供燃烧空气来提供分级燃烧，或者燃烧器可以通过燃烧产物燃烧的燃烧空气来抑制NOx的形成。 本发明的再生式燃烧器抑制了NOx的形成，同时保留了再生系统的剩余特征。

公开(公告)号：US4870947A

公开(公告)日：1989-10-03

申请号：US284596

申请日：1988-12-15

Applicant: Masao Kawamoto

Inventor： Masao Kawamoto

IPC: F23C3/00 ,  F23C99/00 ,  F23D14/12 ,  F23L15/02

CPC classification number: F23C3/002 ,  F23C6/042 ,  F23L15/02 ,  F23C2201/30 ,  Y02E20/348 ,  Y10T428/24149

Abstract: The present invention relates to a low NOx radiant tube burner. The radiant tube burner consists of; a primary combustion chamber which is located outside of the furnace and having an injection outlet of the combustion gas located approximately more inside of the furnace than the bung of the radiant tube, a primary fuel nozzle which injects primary fuel into the primary combustion chamber, and a secondary fuel nozzle which is surrounded with refractory material and injects secondary fuel into the radiant tube from the area adjacent to the injection outlet. Approximately the total amount of the combustion air is supplied into the primary combustion chamber with primary fuel under a high excess air ratio creating primary combustion. The low concentration of oxygen remaining in the primary combustion gas combined with the secondary fuel creates secondary combustion.

公开(公告)号：US4496306A

公开(公告)日：1985-01-29

申请号：US601105

申请日：1984-04-18

Applicant: Noboru Okigami ,  Hiroshi Hayasaka ,  Yoshitoshi Sekiguchi ,  Harushige Tamura

Inventor： Noboru Okigami ,  Hiroshi Hayasaka ,  Yoshitoshi Sekiguchi ,  Harushige Tamura

IPC: F23C6/04 ,  F23M3/02

CPC classification number: F23C6/047 ,  F23C2201/30

Abstract: A method comprising injecting a primary fuel and air into a furnace to burn the fuel and form a first-stage combustion zone, the air being supplied at a rate in excess of the stoichiometric rate required for the combustion of the fuel, and injecting a secondary fuel into the furnace around or downstream of the first-stage zone at a rate approximately equal to the stoichiometric rate required for the consumption of the excess oxygen resulting from the combustion in the first-stage zone the fuel being diluted with the surrounding combustion gas and to form a second-stage combustion zone around or downstream of the first-stage zone.

Abstract translation: 一种方法，包括将主燃料和空气注入炉中以燃烧燃料并形成第一级燃烧区，空气以超过燃料燃烧所需的化学计量比率的速率供给，并且注入次级 在大约等于消耗由第一阶段区域燃烧产生的过量氧气所需的化学计量比率的情况下，在第一阶段区域周围或下游的燃料进入炉内，燃料被周围的燃烧气体稀释， 以在第一级区域周围或下游形成第二级燃烧区域。

公开(公告)号：US4257763A

公开(公告)日：1981-03-24

申请号：US916766

申请日：1978-06-19

Applicant: Robert D. Reed

Inventor： Robert D. Reed

IPC: F23C99/00 ,  F23C6/04 ,  F23D17/00 ,  F23L7/00 ,  F23Q9/00

CPC classification number: F23L7/002 ,  F23C6/047 ,  F23D17/002 ,  F23C2201/20 ,  F23C2201/30

Abstract: A low NOx burner for a furnace operating under natural draft in which primary and secondary combustion air are provided to a first burning zone, in which either or both liquid and gaseous fuel can be used. Less than stoichiometric air is supplied in the primary burning zone and tertiary combustion air is supplied in a second combustion zone downstream from the first combustion zone. The total air supply is over the stoichiometric requirement. Air control means is provided so that a fixed ratio of primary-secondary air/tertiary air is provided for all burning and fuel rate conditions, so as to maintain the less than stoichiometric air supply to the first combustion zone. In addition, water atomization is provided upstream of the first burning zone to provide a burning chemistry which favors the reduction of NOx in the first burning zone.

Abstract translation: 用于在自然通风下操作的炉的低NOx燃烧器，其中主燃烧空气和二次燃烧空气被提供到可以使用液体和气体燃料中的任一种或两种的第一燃烧区域。 在初级燃烧区域供应不到化学计量的空气，在第一燃烧区域下游的第二燃烧区域中供应三级燃烧空气。 总供气量超过化学计量要求。 提供了空气控制装置，使得在所有燃烧和燃料条件下都提供一次二次空气/三次空气的固定比例，以保持比第一燃烧区少的化学计量空气供应。 此外，在第一燃烧区的上游设置水雾化，以提供有利于第一燃烧区中的NOx还原的燃烧化学物质。

公开(公告)号：US4157890A

公开(公告)日：1979-06-12

申请号：US836380

申请日：1977-09-26

Applicant: Robert D. Reed

Inventor： Robert D. Reed

IPC: F23D14/02 ,  F23C6/04 ,  F23C99/00 ,  F23D14/04 ,  F23D14/58 ,  F23C7/00

CPC classification number: F23D14/04 ,  F23D14/58 ,  F23C2201/20 ,  F23C2201/30

Abstract: An improved gaseous fuel burner system for minimizing the production of NOx in a gas burner, comprising a primary burner, including a burner tube and a primary burner head, having a plurality of primary burner ports, in a two dimensional array, over a selected, substantially planar area, transverse to the burner tube. A mixture of gaseous fuel and primary air is supplied to the burner tube, and to the primary burner ports. Secondary combustion air is supplied around the burner tube and flows downstreamwardly to the primary burner and to the combustion zone downstream of the primary burner ports. Secondary burner ports are provided upstream of the primary burner ports, which carry the gaseous fuel and primary air in the form of jets, mixing with the secondary air, and burning to provide combustion products CO.sub.2 and H.sub.2 O, which flow downstreamwardly with the secondary air into the combustion zone of the primary burner.

Abstract translation: 一种改进的气体燃料燃烧器系统，用于最小化气体燃烧器中的NOx的产生，其包括主燃烧器，其包括燃烧器管和主燃烧器头，其具有二维阵列中的多个主燃烧器端口， 基本平坦的区域，横向于燃烧器管。 气体燃料和一次空气的混合物被供应到燃烧器管和主燃烧器端口。 二次燃烧空气在燃烧器管周围供应并且向下流动到主燃烧器和主燃烧器端口下游的燃烧区。 辅助燃烧器端口设置在主燃烧器端口的上游，其携带气体燃料和喷气形式的一次空气，与二次空气混合，并且燃烧以提供燃烧产物CO 2和H 2 O，其将二次空气向下流动 主燃烧器的燃烧区。