公开(公告)号：US06425976B1

公开(公告)日：2002-07-30

申请号：US09835734

申请日：2001-04-16

Applicant: Kent K Sandquist ,  Anders Kullendorff

Inventor： Kent K Sandquist ,  Anders Kullendorff

IPC: D21C1112

CPC classification number: F23L7/007 ,  D21C11/125 ,  F23C2201/101 ,  F23G7/04 ,  F23L7/00 ,  F23L9/00 ,  F23L2900/07005 ,  Y02E20/344

Abstract: The invention refers to a method for black liquor gasification in recovery boilers, of the type having a lower portion, referred to as a lower furnace and an upper portion, referred to as an upper furnace, black liquor sprayers for introduction of black liquor provided in the boiler above the lower furnace, and a number of combustion air levels, whereby the invention incorporates adding oxygen enriched air to the combustion air or directly into the lower furnace at at least one air level underneath the liquor sprayers for the purpose of creating the best possible reducing conditions in the lower furnace, redistributing from the lower furnace combustion air not needed therein following the addition of oxygen enriched air, thereby significantly reducing upward gas velocity underneath the black liquor sprayers, and introducing the redistributed combustion air in the upper furnace, thereby creating the reducing conditions and a controlled temperature in the lower furnace for emission control.

Abstract translation: 本发明涉及一种回收锅炉中黑液气化的方法，该方法具有下部称为下部炉的下部，称为上部炉的上部，用于引入黑液的黑液喷雾器 锅炉在较低的炉子上方以及多个燃烧空气水平，由此本发明包括在燃烧空气中添加富氧空气或者在酒精喷雾器下方的至少一个空气水平处直接进入下炉，以创造最佳的 在下炉中可能的还原条件，在加入富氧空气之后，从其中不需要的低炉燃烧空气重新分配，从而显着减少黑液喷雾器下方的向上气体速度，并将再分布的燃烧空气引入上炉中 在下炉中产生还原条件和控制温度，用于排放控制 ol。

公开(公告)号：US06258336B1

公开(公告)日：2001-07-10

申请号：US09276910

申请日：1999-03-26

Applicant: Bernard P. Breen ,  Harjit S. Hura

Inventor： Bernard P. Breen ,  Harjit S. Hura

IPC: C01B2120

CPC classification number: B01D53/56 ,  B01D53/79 ,  F23C6/047 ,  F23C2201/101 ,  F23C2201/301 ,  F23J7/00

Abstract: In a furnace having a primary combustion zone for combustion of a fuel and oxidant, an in-furnace method for reducing nitrogen oxides in combustion products generated in the primary combustion zone in which at least one fluid fuel selected from the group consisting of natural gas, hydrogen, CxHy compounds, CxHyOz compounds and mixtures thereof in an amount in a range of about 2.0% to about 25% of a total heat input to the furnace and at least one nitrogenous compound selected from the group consisting of ammonia, amines, urea, cyanuric acid and mixtures thereof are injected into the furnace downstream of the primary combustion zone, forming an overall fuel-lean NOx-reduction zone.

Abstract translation: 在具有用于燃烧和氧化剂燃烧的初级燃烧区的炉子中，用于还原在主燃烧区产生的燃烧产物中的氮氧化物的炉内方法，其中至少一种选自天然气， 氢，C x H y化合物，C x H y O z化合物及其混合物，其量为输入炉内总热量的约2.0％至约25％，以及至少一种选自氨，胺，脲， 将氰尿酸及其混合物注入到主燃烧区下游的炉中，形成总体贫燃氮氧化物还原区。

公开(公告)号：US20010003265A1

公开(公告)日：2001-06-14

申请号：US09376353

申请日：1999-08-18

Applicant: MATTINGLY, STANGER & MALUR

Inventor： KENJI YAMAMOTO ,  HIRONOBU KOBAYASHI ,  HIROFUMI OKAZAKI ,  TOSHIKAZU TSUMURA ,  KENJI KIYAMA

IPC: F23B007/00

CPC classification number: F23C5/00 ,  F22B31/00 ,  F23C6/047 ,  F23C7/008 ,  F23C7/02 ,  F23C2201/101 ,  F28F19/00 ,  Y02E20/328

Abstract: The invention provides a boiler provided with low cost means which can reduce a concentration of CO, an unburned matter, an attached ash and the like near a side wall and maintain a combustion state well with a simple structure. In a boiler having a combustion chamber 13 formed by front and rear walls (burner walls) provided with a plural stages of burners 2, 3 and 4 on at least one of them and opposing to each other, and side walls 1a and 1b crossing to said burner walls 14a and 14b, a gas port 6 containing no fuel for making a pressure of a gas near said side walls 1a and 1b within said combustion chamber 13 higher than a pressure of a gas at a center portion of said combustion chamber 13 is provided between an outermost burner and the side walls 1a and 1b within a range of a height of said burner stages 2, 3 and 4. A combustion gas 16 can not come close to the side walls 1a and 1b due to the jet 18 of the gas.

Abstract translation: 本发明提供了一种具有低成本装置的锅炉，其可以在侧壁附近降低CO浓度，未燃烧物质，附着灰分等，并且以简单的结构保持良好的燃烧状态。 在具有燃烧室13的锅炉中，其前后壁（燃烧器壁）由至少一个燃烧器2,3和4形成，并且彼此相对，并且侧壁1a和1b与 所述燃烧器壁14a和14b，不包含用于使所述燃烧室13内的所述侧壁1a和1b附近的气体的压力高于燃烧室13的中心部分处的气体的压力的燃料口6， 设置在燃烧器台2,3和4的高度范围内的最外侧燃烧器和侧壁1a和1b之间。燃烧气体16不能靠近侧壁1a和1b，这是由于喷嘴18 加油站。

公开(公告)号：US06228214B1

公开(公告)日：2001-05-08

申请号：US09417171

申请日：1999-10-12

Applicant: Kent K Sandquist ,  Anders Kullendorff

Inventor： Kent K Sandquist ,  Anders Kullendorff

IPC: D21C1112

CPC classification number: F23L7/007 ,  D21C11/125 ,  F23C2201/101 ,  F23G7/04 ,  F23L7/00 ,  F23L9/00 ,  F23L2900/07005 ,  Y02E20/344

Abstract: The invention refers to a method for black liquor gasification in recovery boilers, of the type having a lower portion, referred to as a lower furnace and an upper portion, referred to as an upper furnace, black liquor sprayers for introduction of black liquor provided in the boiler above the lower furnace, and a number of combustion air levels, whereby the invention incorporates adding oxygen enriched air to the combustion air or directly into the lower furnace at at least one air level underneath the liquor sprayers for the purpose of creating the best possible reducing conditions in the lower furnace, redistributing from the lower furnace combustion air not needed therein following the addition of oxygen enriched air, thereby significantly reducing upward gas velocity underneath the black liquor sprayers, and introducing the redistributed combustion air in the upper furnace, thereby creating the reducing conditions and a controlled temperature in the lower furnace for emission control.

Abstract translation: 本发明涉及一种回收锅炉中黑液气化的方法，该方法具有下部称为下部炉的下部，称为上部炉的上部，用于引入黑液的黑液喷雾器 锅炉在较低的炉子上方以及多个燃烧空气水平，由此本发明包括在燃烧空气中添加富氧空气或者在酒精喷雾器下方的至少一个空气水平处直接进入下炉，以创造最佳的 在下炉中可能的还原条件，在加入富氧空气之后，从其中不需要的低炉燃烧空气重新分配，从而显着减少黑液喷雾器下方的向上气体速度，并将再分布的燃烧空气引入上炉中 在下炉中产生还原条件和控制温度，用于排放控制 ol。

公开(公告)号：US06189464B1

公开(公告)日：2001-02-20

申请号：US09238161

申请日：1999-01-28

Applicant: Hirofumi Okazaki ,  Hironobu Kobayashi ,  Toshikazu Tsumura ,  Kenji Kiyama ,  Tadashi Jimbo ,  Kouji Kuramashi ,  Shigeki Morita ,  Shinichiro Nomura ,  Miki Shimogori

Inventor： Hirofumi Okazaki ,  Hironobu Kobayashi ,  Toshikazu Tsumura ,  Kenji Kiyama ,  Tadashi Jimbo ,  Kouji Kuramashi ,  Shigeki Morita ,  Shinichiro Nomura ,  Miki Shimogori

IPC: F23B700

CPC classification number: F23C7/02 ,  F23C6/045 ,  F23C2201/101 ,  F23D1/00

Abstract: A combustion method utilizing a pulverized coal combustion burner which is provided with a pulverized coal nozzle for jetting a fluid mixture of pulverized coal and air and an air nozzle for jetting air. In the method, a combustion flame formed by the pulverized coal combustion burner forms a first zone of a gas phase air ratio of one or less at a radially central portion of the flame and a second zone of a gas phase air ratio of more than one outside of the first zone adjacent the coal nozzle, and a third zone of a gas phase air ratio of one or less at a downstream side from said first and second zones.

Abstract translation: 一种利用粉煤燃烧器的燃烧方法，其具有用于喷射粉煤和空气的流体混合物的粉煤喷嘴和用于喷射空气的空气喷嘴。 在该方法中，由粉煤燃烧器形成的燃烧火焰在火焰的径向中心部分处形成一个或多个气相空气比率的第一区域，并且气相空气比的第二区域多于一个 在与煤喷嘴相邻的第一区域外部，以及与所述第一和第二区域的下游侧的气相空气比为一个或更小的第三区域。

公开(公告)号：US6164221A

公开(公告)日：2000-12-26

申请号：US223590

申请日：1998-12-30

Applicant: Anthony Facchiano ,  Richard A. Brown ,  Wate T. Bakker ,  Robert R. Hardman

Inventor： Anthony Facchiano ,  Richard A. Brown ,  Wate T. Bakker ,  Robert R. Hardman

IPC: F23C6/04 ,  F23D1/00 ,  F23J3/02 ,  F23L9/04 ,  F23N1/02

CPC classification number: F23C6/047 ,  F23C2201/101 ,  F23D1/00 ,  F23D2900/00016 ,  F23J3/023 ,  F23K2201/101 ,  F23L9/04 ,  F23N1/022 ,  F23N2039/02

Abstract: The invention provides a method which includes the step of locating a burner of a low NOx boiler that produces a disproportionately high quantity of unburned carbon. The air-to-fuel ratio at the burner is then increased to decrease the percentage of unburned carbon attributable to the burner. The air-to-fuel ratio at a second burner of the low NOx boiler is reduced to maintain a substantially constant total air-to-fuel ratio in the low NOx boiler.

Abstract translation: 本发明提供了一种方法，其包括定位产生不成比例地大量未燃烧碳的低NOx锅炉的燃烧器的步骤。 然后，燃烧器处的空气燃料比被增加以降低归因于燃烧器的未燃碳的百分比。 低NOx锅炉的第二燃烧器的空燃比被降低，从而在低NOx锅炉中保持基本恒定的总空燃比。

公开(公告)号：US6058855A

公开(公告)日：2000-05-09

申请号：US119097

申请日：1998-07-20

Applicant: Terence Ake ,  Roderick Beittel ,  Robert A. Lisauskas ,  Eric Reicker

Inventor： Terence Ake ,  Roderick Beittel ,  Robert A. Lisauskas ,  Eric Reicker

IPC: F23C3/00 ,  F23C6/04 ,  F23C7/00 ,  F23C9/06 ,  F23D1/00 ,  F23D17/00 ,  F23L9/04 ,  F23G7/06

CPC classification number: F23L9/04 ,  F23C3/00 ,  F23C6/042 ,  F23C7/006 ,  F23C9/06 ,  F23D1/00 ,  F23D17/00 ,  F23C2201/101 ,  F23C2201/301 ,  F23D2201/20

Abstract: At least one main combustion chamber contains at least one pulverized coal burner. Each pulverized coal burner is operatively arranged for minimizing NO.sub.X production and for maintaining a predetermined operating temperature to liquefy ash within the combustion chamber. The combustion chamber includes a slag drain for removing slag from the combustion chamber. A slag screen is positioned in a generally U-shaped furnace flow pattern. The slag screen is positioned between the combustion chamber and a radiant furnace. The radiant furnace includes a reburning zone for in-furnace No.sub.X reduction. The reburning zone extends between a reburning fuel injection source and at least one overfire air injection port for injecting air.

Abstract translation: 至少一个主燃烧室包含至少一个粉煤燃烧器。 每个粉煤燃烧器可操作地布置成用于使NO x产生最小化并保持预定的操作温度以使燃烧室内的液化灰。 燃烧室包括用于从燃烧室除去渣的炉渣排出口。 炉渣筛位于大致U形炉流程图中。 炉渣筛位于燃烧室和辐射炉之间。 辐射炉包括用于炉内NoX还原的再燃烧区域。 再燃烧区域在再燃燃料喷射源和至少一个用于喷射空气的过火空气喷射端口之间延伸。

公开(公告)号：US5146858A

公开(公告)日：1992-09-15

申请号：US593021

申请日：1990-10-03

Applicant: Kimishiro Tokuda ,  Masaharu Oguri ,  Shuzo Naito

Inventor： Kimishiro Tokuda ,  Masaharu Oguri ,  Shuzo Naito

IPC: F23C99/00 ,  F23C5/08 ,  F23C5/32 ,  F23C6/04 ,  F23C7/02

CPC classification number: F23C7/02 ,  F23C5/32 ,  F23C2201/101

Abstract: A boiler furnace combustion system typically includes main burners disposed on side walls of or at corners of a square-barrel-shaped boiler furnace having a vertical axis, the burner axes being directed tangentially to an imaginary cylindrical surface coaxial to the furnace. Air nozzles are disposed in the boiler furnace at a level above the main burners, so that unburnt fuel left in a reducing atmosphere or a lower oxygen concentration atmosphere of a main burner combustion region can be perfectly burnt by additional air blown through the air nozzles. The present invention provides two groups of air nozzles disposed at higher and lower levels, respectively. The air nozzles at the lower level are provided at the corners of the boiler furnace with their axes directed tangentially to a second imaginary coaxial cylindrical surface having a larger diameter than the first imaginary coaxial cylindrical surface. And, the air nozzles at the higher level are provided at the centers of the side wall surfaces of the boiler furnace with their axes directed tangentially to a third imaginary coaxial cylindrical surface having a smaller diameter than the second imaginary coaxial cylindrical surface.

公开(公告)号：WO2011156203A3

公开(公告)日：2013-05-02

申请号：PCT/US2011038941

申请日：2011-06-02

Applicant: GEN ELECTRIC ,  XU GUANG ,  WIDMER NEIL COLIN

Inventor： XU GUANG ,  WIDMER NEIL COLIN

IPC: F23C5/32 ,  F23C6/04 ,  F23L9/04 ,  F23N3/00 ,  F23N5/00

CPC classification number: F23C5/32 ,  F23C6/045 ,  F23C2201/101 ,  F23L7/007 ,  F23L9/04 ,  F23N3/002 ,  F23N5/003 ,  F23N2037/16 ,  F23N2041/10 ,  F23N2900/05001 ,  Y02E20/344

Abstract: A method of optimizing operation of a furnace to control emission within a system. Each furnace zone inside of the furnace is associated with at least one exhaust zone. A signal indicative of an amount of byproduct exiting the furnace through at least one of the exhaust zones is received from one or more of the sensors. Based on this signal, an offending furnace zone is identified from among the plurality of furnace zones, the offending furnace zone including an oxygen level contributing to the amount of the byproduct. A relative adjustment of at least one of an amount of oxygen being introduced into the offending furnace zone, and an angular orientation of an oxygen injector introducing oxygen into the offending furnace zone relative to a focal region within the furnace can be initiated. The furnace may have structure to perform the method and may be part of a system.

Abstract translation: 一种优化炉的操作以控制系统内的排放的方法。 炉内的每个炉区与至少一个排气区相连。 从一个或多个传感器接收指示通过至少一个排气区离开炉子的副产物的量的信号。 基于该信号，从多个炉区中识别出违规的炉区，违规炉区包括有助于副产物量的氧水平。 可以开始相对调节引入到有害炉区域中的氧气量中的至少一种，以及相对于炉内焦点区域将氧气引入入侵炉区域的氧气注入器的角度定向。 炉子可以具有执行该方法的结构，并且可以是系统的一部分。

公开(公告)号：WO2011074281A1

公开(公告)日：2011-06-23

申请号：PCT/JP2010/059607

申请日：2010-06-07

Applicant: 三菱重工業株式会社 ,  松本 啓吾 ,  藤村 皓太郎 ,  堂本 和宏 ,  一ノ瀬 利光 ,  阿部 直文 ,  葛西 潤

Inventor： 松本　啓吾 ,  藤村　皓太郎 ,  堂本　和宏 ,  一ノ瀬　利光 ,  阿部　直文 ,  葛西　潤

IPC: F23D1/00 ,  F23C6/04 ,  F23C99/00

CPC classification number: F23D1/00 ,  F23C6/045 ,  F23C2201/101 ,  F23C2201/20

Abstract: 　火炎の外周に形成される高温酸素残存領域を抑制し、最終的なＮＯｘ発生量の低減を可能にした固体燃料焚きバーナを提供する。バーナ部と追加空気投入部とに分けて低ＮＯｘ燃焼を行う固体燃料焚きボイラのバーナ部に用いられ、粉体の固体燃料及び空気を炉内へ投入する固体燃料焚きバーナ（２０）は、内部保炎を有する燃料バーナ（２１）と、保炎しない２次空気投入ポート（３０）とを備え、燃料バーナ（２１）の空気比が０．８５以上に設定されている。

Abstract translation: 提供了一种固体燃料燃烧器，其中抑制形成在火焰外周上的高温氧剩余区域，从而可以减少最终的NOx产生。 固体燃料燃烧器（20）用于分为燃烧器部分和附加充气部分的固体燃料锅炉的燃烧器部分，以执行低NOx燃烧，并将颗粒状固体燃料和空气装入炉中。 固体燃料燃烧器设置有保持火焰的燃料燃烧器（21）和不保持火焰的二次空气充气口（30）。 燃料燃烧器（21）的空气比设定在0.85以上。