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    Boiler
    102.
    发明授权
    Boiler 有权

    公开(公告)号：US06490985B2

    公开(公告)日：2002-12-10

    申请号：US09996919

    申请日：2001-11-30

    Applicant: Kenji Yamamoto ,  Hironobu Kobayashi ,  Hirofumi Okazaki ,  Toshikazu Tsumura ,  Kenji Kiyama

    Inventor： Kenji Yamamoto ,  Hironobu Kobayashi ,  Hirofumi Okazaki ,  Toshikazu Tsumura ,  Kenji Kiyama

    IPC: F23J1100

    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.

    Method for black liquor gasification in recovery boilers
    103.
    发明授权
    Method for black liquor gasification in recovery boilers 失效
    回收锅炉黑液气化方法

    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。

    Method and apparatus for NOx reduction in flue gases
    104.
    发明授权
    Method and apparatus for NOx reduction in flue gases 有权
    烟气中NOx还原的方法和装置

    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。

    BOILER
    105.
    发明申请
    BOILER 失效
    锅炉

    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。

    Method for black liquor gasification in recovery boilers
    106.
    发明授权
    Method for black liquor gasification in recovery boilers 失效
    回收锅炉黑液气化方法

    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。

    Low emission U-fired boiler combustion system
    109.
    发明授权
    Low emission U-fired boiler combustion system 失效
    低排放型燃煤锅炉燃烧系统

    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。

    Boiler furnace combustion system
    110.
    发明授权
    Boiler furnace combustion system 失效
    锅炉燃烧系统

    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.

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