公开(公告)号：US11927345B1

公开(公告)日：2024-03-12

申请号：US16806578

申请日：2020-03-02

Applicant: XRG Technologies, LLC

Inventor： Erwin Platvoet ,  Matthew Martin

IPC: F23C6/04 ,  F23D14/22 ,  B01D53/56 ,  F23C9/00 ,  F23C9/08 ,  F23L7/00 ,  F23M5/02

CPC classification number: F23C6/047 ,  F23D14/22 ,  B01D53/56 ,  F23C9/006 ,  F23C9/08 ,  F23C2201/20 ,  F23C2201/30 ,  F23C2202/30 ,  F23L7/007 ,  F23M5/025

Abstract: A method and device for reducing emissions of nitrogen oxides and for increasing heat transfer in a fired process heater is disclosed herein. The invention relates generally to the combustion of fuel using some proportion of air as the oxidant which leads to the production of oxides of nitrogen, and more particularly to a method and device that reduces the production of nitrogen oxides from combustion, promotes the appropriate distribution of temperature to reduce fouling of the process tubes in a fired heater, and increases the efficiency of heat transfer to the same process tubes.

公开(公告)号：US20090220899A1

公开(公告)日：2009-09-03

申请号：US12087468

申请日：2007-01-10

Applicant: Øystein Spangelo ,  Otto Kristian Sonju ,  Torbjorn Slungaard ,  Mario Ditaranto

Inventor： Øystein Spangelo ,  Otto Kristian Sonju ,  Torbjorn Slungaard ,  Mario Ditaranto

IPC: F23D14/22 ,  F23C5/08

CPC classification number: F23D14/22 ,  F23C2201/30 ,  F23D14/58 ,  F23D2900/00008

Abstract: A method for burning gas in a burner, including leading the gas through an inner fuel tube (13) and introduction of combustion air through an annular space surrounding the inner fuel tube. This space forms of an outer tube (11) terminated by a conically converging section, wherein the end of the inner fuel tube forms a burner head (15). The major part of the primary gas is introduced into the upstream end of the burner head, to go into the combustion air that flows past the burner head, whereas a smaller part of a secondary gas is introduced into the free end of the burner head (15) and into the constricted part of the annular channel that surrounds the burner head. The gas flow is accelerated past the burner head due to the reducing cross section and is burned downstream in relation to the burning head, wherein the mixture has properties that reduces the formation of Nox at the same time as the combustion becomes complete. It is also described a burner for performing this method.

Abstract translation: 一种用于燃烧燃烧器中的气体的方法，包括使气体引导通过内部燃料管（13）并引入燃烧空气通过围绕内部燃料管的环形空间。 由锥形会聚部分端接的外管（11）的空间形式，其中内燃料管的端部形成燃烧头（15）。 主要气体的主要部分被引入到燃烧器头部的上游端，以进入流过燃烧器头部的燃烧空气，而较小部分的二次气体被引入燃烧器头部的自由端（ 15）并且进入围绕燃烧器头部的环形通道的收缩部分。 由于减少的横截面，气流被加速通过燃烧器头部并且相对于燃烧头在下游燃烧，其中混合物具有在燃烧完成的同时减少Nox的形成的性质。 还描述了用于执行该方法的燃烧器。

公开(公告)号：US20080110381A1

公开(公告)日：2008-05-15

申请号：US12014930

申请日：2008-01-16

Applicant: Larry Swanson ,  Wei Zhou ,  David Moyeda ,  Roy Payne

Inventor： Larry Swanson ,  Wei Zhou ,  David Moyeda ,  Roy Payne

IPC: F23J15/00 ,  F23B10/00

CPC classification number: B01D53/56 ,  B01D53/62 ,  B01D53/79 ,  F23C2201/101 ,  F23C2201/30 ,  F23J7/00 ,  F23J2215/10 ,  Y02A50/2341

Abstract: A method of decreasing a concentration of nitrogen oxides in a combustion gas flowing through a vessel including: generating a flue gas in a combustion zone of the vessel, the flue gas containing nitrogen oxides and carbon monoxide; providing overfire air into a burnout zone of the vessel from a first injector of overfire air to oxidize at least some of the carbon monoxide in the flue gas; injecting a selective reducing agent concurrent with overfire air at a level in the burnout zone downstream of the first injector of overfire air and downstream of the oxidization of the carbon monoxide, and reacting the selective reducing agent with the flue gas to reduce the nitrogen oxides.

Abstract translation: 一种降低流过容器的燃烧气体中的氮氧化物的浓度的方法，包括：在容器的燃烧区产生烟道气，所述烟道气含有氮氧化物和一氧化碳; 从第一喷射器的超燃空气向容器的燃尽区提供过量的空气，以氧化烟道气中的至少一些一氧化碳; 在超燃空气的第一喷射器下游的燃尽区域和一氧化碳的氧化下游，将过量空气同时喷射选择性还原剂，并使选择性还原剂与烟道气反应以还原氮氧化物。

公开(公告)号：US07303388B2

公开(公告)日：2007-12-04

申请号：US10883349

申请日：2004-07-01

Applicant: Mahendra Ladharam Joshi ,  Aleksandar Georgi Slavejkov ,  Xianming Jimmy Li

Inventor： Mahendra Ladharam Joshi ,  Aleksandar Georgi Slavejkov ,  Xianming Jimmy Li

IPC: F23D5/00

CPC classification number: F23D14/22 ,  F23C2201/30 ,  F23D14/32 ,  F23D14/583 ,  F23D2203/1026

Abstract: Combustion system comprising a furnace having a thermal load and a combustion atmosphere disposed therein; one or more fuel lances adapted to inject fuel into the combustion atmosphere; and one or more igniters associated with the one or more fuel lances and adapted to ignite the fuel injected by the one or more fuel lances into the combustion atmosphere.

Abstract translation: 燃烧系统包括具有设置在其中的热负荷和燃烧气氛的炉; 适于将燃料喷射到燃烧气氛中的一个或多个燃料喷枪; 以及与所述一个或多个燃料喷枪相关联并且适于将由所述一个或多个燃料喷枪喷射的燃料点燃到燃烧气氛中的一个或多个点火器。

公开(公告)号：US20050181318A1

公开(公告)日：2005-08-18

申请号：US10797513

申请日：2004-03-10

Applicant: Brian Higgins

Inventor： Brian Higgins

IPC: F23C5/00 ,  F23M3/02

CPC classification number: F23L9/04 ,  F23C6/047 ,  F23C2201/101 ,  F23C2201/20 ,  F23C2201/30 ,  F23J2215/20

Abstract: A method for of reducing the acidity and lowering the acid dewpoint of flue gas, the method steps including partially combusting the fuel in a first stage to create a reducing environment; maintaining the reducing environment for a sufficient time period such that reducible acids are reduced to achieve a desirable acidity concentration in the flue gas; and combusting the remainder of the fuel and combustion intermediates in a second stage with oxidizing environment; thereby decreasing the acidity and lowering the acid dewpoint of the flue gas by reducing the acid concentration of the gas.

Abstract translation: 一种降低烟气酸度和降低酸性露点的方法，所述方法步骤包括在第一阶段部分地燃烧燃料以产生还原环境; 保持还原环境足够的时间，使得可还原的酸被还原以达到烟道气中所需的酸度浓度; 并在具有氧化环境的第二阶段中燃烧剩余的燃料和燃烧中间体; 从而通过降低气体的酸浓度来降低烟气的酸度和降低酸性露点。

公开(公告)号：US20040244367A1

公开(公告)日：2004-12-09

申请号：US10454597

申请日：2003-06-05

Inventor： Larry William Swanson ,  Wei Zhou ,  David Kelly Moyeda ,  Roy Payne

IPC: F01N003/00 ,  F01N003/02 ,  F01N005/04

CPC classification number: B01D53/56 ,  B01D53/62 ,  B01D53/79 ,  F23C2201/101 ,  F23C2201/30 ,  F23J7/00 ,  F23J2215/10 ,  Y02A50/2341

Abstract: A combustion vessel having a combustion zone; a burnout zone downstream of the combustion zone; an overfire air chamber adjacent the burnout zone, wherein the chamber has an upstream air injector and a downstream air injector, and an agent injector for injecting a selective reducing agent into the burnout zone, wherein the agent injector extends through the downstream air injector.

Abstract translation: 具有燃烧区的燃烧容器; 燃烧区下游的燃尽区; 邻近燃尽区的过火空气室，其中所述室具有上游空气喷射器和下游空气喷射器，以及用于将选择性还原剂注入到燃尽区中的试剂注射器，其中所述试剂注射器延伸穿过所述下游空气喷射器。

公开(公告)号：US06685463B2

公开(公告)日：2004-02-03

申请号：US09738142

申请日：2000-12-15

Applicant: Harry P. Finke ,  Gregory T. Kitko ,  Andrew J. Johnson ,  John R. Hemmerlin

Inventor： Harry P. Finke ,  Gregory T. Kitko ,  Andrew J. Johnson ,  John R. Hemmerlin

IPC: F23M304

CPC classification number: F23C9/006 ,  F23C6/045 ,  F23C7/002 ,  F23C2201/20 ,  F23C2201/30 ,  F23C2900/06041 ,  F23M5/025

Abstract: A burner (10) for reducing NOx emissions where supply fuel (16) and supply air (20) are supplied to a combustion tunnel (52) at high and low velocities and secondary air (26) is supplied to a secondary combustion zone (60), wherein products of combustion (59) exiting into the secondary combustion zone (60) from the combustion tunnel (52) are drawn back into the combustion tunnel (52) and back into the secondary air conduit (54).

Abstract translation: 用于将供应燃料（16）和供给空气（20）以高速和低速供应到燃烧通道（52）和二次空气（26）的用于减少NOx排放的燃烧器（10）被供应到二次燃烧区域 ），其中从燃烧通道（52）离开到二次燃烧区域（60）的燃烧产物（59）被抽回燃烧通道（52）并返回到二次空气管道（54）中。

公开(公告)号：US06270336B1

公开(公告)日：2001-08-07

申请号：US09325900

申请日：1999-06-04

Applicant: Tetsuo Terashima ,  Kiyoshi Taguchi ,  Yoshitaka Kawasaki ,  Motohiro Suzuki ,  Jiro Suzuki

Inventor： Tetsuo Terashima ,  Kiyoshi Taguchi ,  Yoshitaka Kawasaki ,  Motohiro Suzuki ,  Jiro Suzuki

IPC: F23D1144

CPC classification number: F23C13/00 ,  F23C6/04 ,  F23C13/02 ,  F23C13/08 ,  F23C2201/30

Abstract: A combustion control method for use in a catalytic combustion system having (a) a gaseous mixture inlet port, located at the upstream side of said catalytic combustion system, for the entrance of a fuel-air mixture; (b) an exhaust gas outlet port, located at the downstream side of said catalytic combustion system, for the exit of an exhaust gas; (c) a primary combustion chamber in which a catalyst body is disposed, said catalyst body being formed of a porous base material with numerous communicating holes that supports thereon an oxidation catalyst; (d) a secondary supply port, located downstream of said primary combustion chamber, for the supply of a gaseous mixture or air; and (e) a secondary combustion chamber located downstream of said secondary supply port; comprising such process that an excess air ratio of said primary combustion chamber is initially set above 1 and after the rate of combustion of said secondary combustion chamber exceeds a given level, combustion is made to take place, with the excess air ratio of said primary combustion chamber set below 1.

Abstract translation: 一种用于催化燃烧系统的燃烧控制方法，其具有（a）位于所述催化燃烧系统的上游侧的用于进入燃料 - 空气混合物的气体混合物入口;（b）排气出口 位于所述催化燃烧系统的下游侧，用于排出废气;（c）初级燃烧室，其中设置有催化剂体，所述催化剂体由具有许多连通孔的多孔基材形成，所述多孔基材具有许多连通孔， 在其上支撑氧化催化剂;（d）位于所述主燃烧室下游的用于供应气体混合物或空气的二次供应口; 并且（e）位于所述二次供应口的下游的二次燃烧室;包括以下过程：所述主燃烧室的过量空气比初始设定在1以上，并且在所述二次燃烧室的燃烧速率超过给定水平之后，燃烧 使所述主燃烧室的过量空气比设定为低于1。

公开(公告)号：US5667376A

公开(公告)日：1997-09-16

申请号：US309198

申请日：1994-09-20

Applicant: Thomas F. Robertson ,  Todd A. Miller ,  Dennis E. Quinn

Inventor： Thomas F. Robertson ,  Todd A. Miller ,  Dennis E. Quinn

IPC: F23C3/00 ,  F23C6/04 ,  F23C9/00 ,  F23C99/00 ,  F23D14/02 ,  F23D14/64 ,  F23D14/82 ,  F23L9/00

CPC classification number: F23C6/045 ,  F23C3/00 ,  F23C6/042 ,  F23C9/006 ,  F23D14/02 ,  F23D14/64 ,  F23D14/82 ,  F23C2201/30 ,  F23C2900/06041 ,  F23C2900/09002

Abstract: A burner is disclosed having a burner chamber with heavily insulated heat retaining walls and a series of off-center mixers located at one end thereof. A uniform concentration gas/air mixture to 50% additional fuel above the lean flammability limit coming from the mixer tubes is ignited in the burner chamber due to the recirculation of combusting gas and air back to the end of the burner chamber above auto the ignition temperature for the mixture. The particular mixture disclosed utilizes 0.55-0.7 equivalence ratio. With the present burner, oxidant and fuel are respectively supplied to each mixer by respective common oxidant and fuel plenums. In this way, fuel and oxidant are mixed near the point of combustion, enhancing safety and permitting the construction of larger burners.

Abstract translation: 公开了一种燃烧器，其具有具有绝热隔热壁的燃烧室和位于其一端的一系列偏心混合器。 由于燃烧气体和空气再循环到燃烧器室的末端，燃烧器室的端部高于自动点火温度，燃烧器室中会点燃来自混合器管的超过易燃性极限的50％额外燃料的均匀浓度气体/空气混合物 为混合物。 所公开的具体混合物使用0.55-0.7当量比。 使用本燃烧器，氧化剂和燃料分别通过相应的普通氧化剂和燃料增压室供应到每个混合器。 以这种方式，燃料和氧化剂在燃烧点附近混合，增强安全性并允许构建较大的燃烧器。

公开(公告)号：US5458481A

公开(公告)日：1995-10-17

申请号：US187172

申请日：1994-01-26

Applicant: David J. Surbey ,  James L. Smith ,  Richard C. Allen ,  Alan D. Witwer

Inventor： David J. Surbey ,  James L. Smith ,  Richard C. Allen ,  Alan D. Witwer

IPC: F23C9/00 ,  F23D14/22 ,  F23M5/02 ,  F23L7/00

CPC classification number: F23C9/006 ,  F23D14/22 ,  F23M5/025 ,  F23C2201/30 ,  F23C2202/20 ,  F23C2900/09002

Abstract: A burner for combusting fuel gas and air in an enclosure includes a block member of non-combustible material, such as ceramic material, having a central opening therethrough. The block member has a plurality of spaced apart recirculation gas passageways paralleled to and spaced from the central opening, each of the recirculation gas passageways having an injection passageway communicating with the block member central opening. A fuel gas jet is positioned within each of the recirculation gas passageways for injecting fuel gas into the injection passageways to cause the injected fuel gas by Venturi action, to draw furnace gas from the cool fringes of the combustion zone through the recirculation gas passageways for passage back into the central opening after local combustion wherein modified air and fuel gas are thoroughly mixed and cooled for combustion within the enclosure. This recirculation system serves to reduce the temperature and oxygen content of the local combustion process to thereby reduce NO.sub.x production.

Abstract translation: 用于在外壳中燃烧燃料气体和空气的燃烧器包括具有中心开口的不燃材料例如陶瓷材料的块件。 块体具有与中心开口平行并间隔开的多个间隔开的再循环气体通道，每个再循环气体通道具有与块体中心开口连通的注射通道。 燃料气体射流位于每个再循环气体通道内，用于将燃料气体喷射到喷射通道中，以通过文丘里作用引起喷射的燃料气体，从燃烧区域的冷条纹中抽出炉气通过再循环气体通道以通过 在局部燃烧之后回到中心开口，其中改进的空气和燃料气体被充分混合并冷却以在外壳内燃烧。 该再循环系统用于降低局部燃烧过程的温度和氧含量，从而减少NOx产生。