公开(公告)号：US5238396A

公开(公告)日：1993-08-24

申请号：US900400

申请日：1992-06-18

Applicant: Loo T. Yap

Inventor： Loo T. Yap

IPC: F23C99/00 ,  F23C6/04 ,  F23D14/04

CPC classification number: F23C6/045 ,  F23C2201/20

Abstract: Fuel is burned in accordance with a burning method and apparatus in two stages and in the presence of first and second oxygen-containing gases, respectively. The second oxygen-containing gas has a higher concentration of oxygen than the first oxygen-containing gas. The fuel stream is burned in a first of the two stages at a first equivalence ratio sufficiently greater than 1.0, so that thermal NO.sub.x formation is inhibited, a more heat transfer effective luminous flame is achieved and a combustible mixture comprising unburned and partially oxidized fuel and fuel radicals is produced for combustion in the second of the two stages. The combustible mixture is burned in the second of the two stages at an equivalence ratio of no greater than about 1.0 so that maximum heat is transferred to the first of the two stages to stabilize combustion therein, and the fuel radicals are sufficiently oxidized by the second oxygen-containing gas to inhibit formation of prompt NO.sub.x.

公开(公告)号：US4925387A

公开(公告)日：1990-05-15

申请号：US284098

申请日：1988-12-14

Applicant: Philippe Locanetto ,  Frederic Bury ,  Jacques Pizant

Inventor： Philippe Locanetto ,  Frederic Bury ,  Jacques Pizant

IPC: F23D14/24 ,  F23C6/04 ,  F23C99/00 ,  F23D11/24 ,  F23D14/70 ,  F23D17/00

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

Abstract: The invention relates to a process and an apparatus intended to effect the combustion of a mixture of air and liquid or gaseous fuel, wherein the injection of the fuel is staged without that of the air for combustion being staged. According to the invention, in addition to the primary means (20, 34) for injecting fuel into the passage (10, 14) supplying air to the burner, secondary injection means (24) mounted inside said passage are provided and comprise a main part (24a) which is extended by a terminal part (24b) bent in such a manner that the end of said terminal part is situated downstream of the end of the primary means (20, 34) and at a distance from the axis (2) of said passage which is greater than the minimum section of the latter. The invention is applicable both to so-called parallel air admission burners and to burners having swirl vanes.

Abstract translation: 本发明涉及一种旨在实现空气和液体或气体燃料混合物的燃烧的方法和装置，其中燃料的喷射被分级，而不是用于燃烧的空气的喷射。 根据本发明，除了用于将燃料喷射到向燃烧器供应空气的通道（10,14）中的主要装置（20,34）之外，还提供安装在所述通道内的二次注射装置（24），并且包括主要部分 （24a），其被端子部分（24b）延伸，所述端子部分（24b）以使得所述端子部分的端部位于所述主要装置（20,34）的端部的下游并且距离所述轴线（2）一定距离的方式弯曲， 所述通道大于后者的最小部分。 本发明既适用于所谓的平行进气燃烧器，又适用于具有涡流叶片的燃烧器。

公开(公告)号：US4629413A

公开(公告)日：1986-12-16

申请号：US648494

申请日：1984-09-10

Applicant: Herbert D. Michelson ,  James P. Stumbar

Inventor： Herbert D. Michelson ,  James P. Stumbar

IPC: F23C99/00 ,  F23C7/02 ,  F23D14/04 ,  F23D14/08 ,  F23M3/00

CPC classification number: F23C7/02 ,  F23D14/08 ,  F23C2201/20

Abstract: The invention relates to an improved premix burner and a method of its operation for combustion with a minimum of NO.sub.x emissions. The improvement is achieved by combining staged combustion with a premix burner in a manner such that mixing of the secondary air with the flame is delayed.

Abstract translation: 本发明涉及一种改进的预混合燃烧器及其以最少NOx排放燃烧的操作方法。 通过将分级燃烧与预混燃烧器结合使得二次空气与火焰的混合被延迟的方式来实现改进。

公开(公告)号：US4351632A

公开(公告)日：1982-09-28

申请号：US136394

申请日：1980-04-01

Applicant: Kiyokazu Nagai

Inventor： Kiyokazu Nagai

IPC: F23C7/02 ,  F23C6/04 ,  F23C7/00 ,  F23C99/00 ,  F23M9/00

CPC classification number: F23C7/004 ,  F23C6/045 ,  F23C7/008 ,  F23C2201/20

Abstract: A swirl burner of the two-stage combustion type with suppressed NO.sub.x generation which is so arranged that combustion air supplied into the burner is divided into primary and secondary combustion air, and the primary combustion air subjected to a powerful swirling motion by a primary combustion air nozzle having a frusto-conical shape and swirling vanes is supplied into a primary combustion chamber for drawing only primary combustion gas thereinto, while the secondary air is directed, in the form of a rectilinear flow, into a furnace through secondary combustion air nozzles provided around the primary combustion chamber, with oil and gas for fuel being supplied into the primary combustion chamber through a fuel injector nozzle. Part of the fuel is burned in the primary combustion chamber, while the remainder of the fuel is sequentially mixed with the secondary combustion air for combustion in the furnace.

Abstract translation: 一种具有抑制NOx生成的两级燃烧式的涡流燃烧器，其被配置成供给到燃烧器中的燃烧空气被分成一次燃烧空气和二次燃烧空气，一次燃烧空气通过一次燃烧空气受到强烈的旋转运动 具有截头圆锥形的喷嘴和旋流叶片被供应到一次燃烧室中，用于仅吸入一次燃烧气体，而二次空气以直线流动的形式通过设置在其周围的二次燃烧空气喷嘴引导到炉中 主燃烧室具有用于燃料的油和气体通过燃料喷射器喷嘴供应到主燃烧室中。 一部分燃料在一次燃烧室中燃烧，而剩余的燃料依次与二次燃烧空气混合，用于在炉中燃烧。

公开(公告)号：US4297093A

公开(公告)日：1981-10-27

申请号：US71487

申请日：1979-08-31

Applicant: Kotaro Morimoto ,  Tomio Suzuki

Inventor： Kotaro Morimoto ,  Tomio Suzuki

IPC: F23C99/00 ,  F23C7/00 ,  F23C7/02 ,  F23M3/00

CPC classification number: F23C7/004 ,  F23C2201/20

Abstract: A combustion method which can reduce the emission of NOx and smoke. In sharp contrast to the conventional combustion method, the method of the invention can remarkably reduce the emission of both of NOx and the smoke simultaneously, by adopting a specific flow pattern of fuel and combustion air in the combustion chamber, the pattern has been obtained as a result of studies and experiments concerning the influence of the intensity of mixing of the fuel and the combustion air on the emission of NOx.

Abstract translation: 一种可以减少NOx和烟雾排放的燃烧方法。 与常规燃烧方法形成鲜明对比的是，本发明的方法可以通过采用燃烧室中燃料和燃烧空气的特定流动模式同时显着地减少NOx和烟雾的排放， 关于燃料和燃烧空气的混合强度对NOx排放的影响的研究和实验的结果。

公开(公告)号：US20180209640A1

公开(公告)日：2018-07-26

申请号：US15866844

申请日：2018-01-10

Applicant: RINNAI CORPORATION

Inventor： Yusuke Asai

IPC: F23D14/04 ,  F23D14/58 ,  F23C6/04

CPC classification number: F23D14/045 ,  F23C6/045 ,  F23C2201/20 ,  F23C2900/06041 ,  F23D14/583 ,  F23D2900/00003

Abstract: In a combustion apparatus provided with: a combustion box having a connection flange part for connecting a heat exchanger to an upper end of the combustion box; a partition plate disposed inside the combustion box for partitioning space inside the combustion box into a combustion chamber and an air supply chamber which lies under the combustion chamber; and a plurality of laterally arrayed burners which are elongated longitudinally, the internal volume of the combustion box is increased without increasing a height dimension or without enlarging the connection flange part, thereby restraining the occurrence of resonance sounds. A drawn part projecting laterally outward of the combustion box is provided in such a portion of each side-plate part as is above the partition plate, over a predetermined range in the vertical and longitudinal directions. An upper side of the drawn part is preferably positioned below the upper end of the burners, and is preferably parallel with the upper end of the burners.

公开(公告)号：US09926219B2

公开(公告)日：2018-03-27

申请号：US15272703

申请日：2016-09-22

Applicant: JOHNS MANVILLE

Inventor： Mark William Charbonneau ,  Kevin Patrick McHugh

IPC: C03B5/235 ,  F23D14/62 ,  C03B37/075 ,  C03B5/193 ,  C03B37/022 ,  F23C6/04 ,  F23D14/22 ,  F23D14/78 ,  C03B7/02 ,  C03B37/07

CPC classification number: C03B37/0756 ,  C03B5/193 ,  C03B5/2353 ,  C03B5/2356 ,  C03B7/02 ,  C03B37/022 ,  C03B37/07 ,  C03B37/075 ,  C03B2201/00 ,  C03B2203/14 ,  C03B2203/16 ,  C03B2211/22 ,  C03B2211/23 ,  C03B2211/40 ,  C03B2211/60 ,  F23C6/047 ,  F23C2201/20 ,  F23C2201/301 ,  F23D14/22 ,  F23D14/62 ,  F23D14/78 ,  Y02P40/55

Abstract: Processes and systems for producing glass fibers having regions devoid of glass using submerged combustion melters, including feeding a vitrifiable feed material into a feed inlet of a melting zone of a melter vessel, and heating the vitrifiable material with at least one burner directing combustion products of an oxidant and a first fuel into the melting zone under a level of the molten material in the zone. One or more of the burners is configured to impart heat and turbulence to the molten material, producing a turbulent molten material comprising a plurality of bubbles suspended in the molten material, the bubbles comprising at least some of the combustion products, and optionally other gas species introduced by the burners. The molten material and bubbles are drawn through a bushing fluidly connected to a forehearth to produce a glass fiber comprising a plurality of interior regions substantially devoid of glass.

公开(公告)号：US20170343212A1

公开(公告)日：2017-11-30

申请号：US15679944

申请日：2017-08-17

Applicant: Honeywell International Inc.

Inventor： Curtis Taylor ,  Brad Patterson ,  Jayson Perdue

IPC: F23L7/00 ,  F23D1/00 ,  F23C6/04

CPC classification number: F23L7/007 ,  F23C6/045 ,  F23C2201/20 ,  F23D1/00 ,  F23D2201/00 ,  F23D2201/20 ,  F23D2900/00006 ,  Y02E20/344

Abstract: A burner assembly combines oxygen and fuel to produce a flame. The burner assembly includes an oxygen supply tube adapted to receive a stream of oxygen and a solid fuel conduit arranged to extend through the oxygen tube to convey a stream of fluidized, pulverized, solid fuel into a flame chamber. Oxygen flowing through the oxygen supply tube passes generally tangentially through a first set of oxygen-injection holes formed in the solid fuel conduit and off-tangentially from a second set of oxygen-injection holes formed in the solid fuel conduit and then mixes with fluidized, pulverized, solid fuel passing through the solid fuel conduit to create an oxygen-fuel mixture in a downstream portion of the solid fuel conduit. This mixture is discharged into a flame chamber and ignited in the flame chamber to produce a flame.

公开(公告)号：US20170198905A1

公开(公告)日：2017-07-13

申请号：US15320601

申请日：2015-06-23

Applicant: Air Products and Chemicals, Inc.

Inventor： Mark Daniel D'Agostini ,  Anup Vasant Sane ,  Avishek Guha

IPC: F23D14/32 ,  F23L7/00 ,  F23D14/22

CPC classification number: F23D14/32 ,  F23C6/045 ,  F23C2201/20 ,  F23D1/00 ,  F23D14/22 ,  F23D14/24 ,  F23L7/007 ,  Y02E20/344

Abstract: An oxy-gaseous fuel burner (400, 500) or a solid fuel burner (700) having an annular cavity (404, 504, 704) upstream from and proximate to an outlet plane (416, 516, 716) and a converging (434, 734) or converging-diverging nozzle (537) located upstream from and proximal to the cavity (404, 504, 704). The solid fuel burner (700) also is preferably operated so that the velocity of gas exiting a second annulus (730) is less than the velocity of gas exiting a central conduit (710).

公开(公告)号：US09671108B2

公开(公告)日：2017-06-06

申请号：US14007858

申请日：2012-03-07

Applicant: Keigo Matsumoto ,  Kazuhiro Domoto ,  Naofumi Abe ,  Jun Kasai

Inventor： Keigo Matsumoto ,  Kazuhiro Domoto ,  Naofumi Abe ,  Jun Kasai

IPC: F23D1/00 ,  F23L9/00 ,  F23N3/00 ,  F23C5/32 ,  F23C6/04

CPC classification number: F23D1/005 ,  F23C5/32 ,  F23C6/045 ,  F23C2201/20 ,  F23D1/00 ,  F23D2201/10 ,  F23D2201/101 ,  F23D2201/20 ,  F23D2209/20 ,  F23K2203/201 ,  F23L9/00 ,  F23N3/00 ,  F23N2021/10

Abstract: Provided is a combustion burner including: a fuel nozzle (51) that is able to blow a fuel gas obtained by mixing pulverized coal with primary air; a secondary air nozzle (52) that is able to blow secondary air from the outside of the fuel nozzle (51); a flame stabilizer (54) that is provided at a front end portion of the fuel nozzle (51) so as to be near the axis center; and a rectification member (55) that is provided between the inner wall surface of the fuel nozzle (51) and the flame stabilizer (54), wherein an appropriate flow of a fuel gas obtained by mixing solid fuel with air may be realized.