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    SOLID-FUEL BURNER
    1.
    发明申请
    SOLID-FUEL BURNER 有权
    固体燃料燃烧器

    公开(公告)号：US20150241058A1

    公开(公告)日：2015-08-27

    申请号：US14421003

    申请日：2013-08-09

    Applicant: MITSUBISHI HITACHI POWER SYSTEMS, LTD.

    Inventor： Toshihiko Mine ,  Kenji Kiyama ,  Miki Shimogori ,  Satoshi Tadakuma ,  Hitoshi Wakamatsu ,  Noriyuki Ohyatsu ,  Koji Kuramashi ,  Kenichi Ochi ,  Yusuke Ochi ,  Hirofumi Okazaki

    IPC: F23D1/00 ,  F23D17/00

    CPC classification number: F23D1/00 ,  F23C7/006 ,  F23C7/008 ,  F23D2201/20 ,  F23K3/02 ,  F23K2203/008 ,  F23K2203/201

    Abstract: A solid-fuel burner includes: a venturi having a constricting portion where the transverse cross section of a fuel passage is reduced in a fuel nozzle for supplying a solid fuel; and a fuel concentrator for diverting the flow in the nozzle outward in the wake side of the venturi, and the nozzle is formed so that (a) the aperture in the vicinity of an opening portion of a boiler furnace wall surface has a flat shape, (b) cross-sectional shape thereof orthogonal to a nozzle center axis C on the outer peripheral wall of the nozzle is circular in a transverse cross section up to the constricting portion of the venturi, (c) a portion that has a gradually increasing degree of flatness is provided between the constricting portion and the opening portion, and (d) the flat shape in the opening portion is where the degree of flatness reaches a maximum.

    Abstract translation: 固体燃料燃烧器包括：文丘里管，其具有收缩部分，在用于供应固体燃料的燃料喷嘴中燃料通道的横截面减小; 以及用于将喷嘴中的流向外转向文丘里管的尾流侧的燃料浓缩器，并且喷嘴形成为使得（a）锅炉炉壁表面的开口部附近的孔具有扁平形状， （b）与喷嘴的外周壁上的喷嘴中心轴线C正交的截面形状在文丘里管的收缩部分的横截面为圆形，（c）逐渐增加的部分 在收缩部和开口部之间设置有平坦度，（d）开口部的平坦形状是平坦度达到最大的程度。

    Solid fuel burner and flame stabilizer for solid fuel burner
    2.
    发明授权
    Solid fuel burner and flame stabilizer for solid fuel burner 有权

    公开(公告)号：US11519600B2

    公开(公告)日：2022-12-06

    申请号：US16957913

    申请日：2018-12-18

    Applicant: MITSUBISHI HITACHI POWER SYSTEMS, LTD.

    Inventor： Satoshi Tadakuma ,  Akira Baba ,  Koji Kuramashi ,  Takeshi Aruga ,  Shohei Mito ,  Kosuke Kitakaze ,  Toshihiko Mine

    IPC: F23C9/00

    Abstract: A solid fuel burner is provided with a guide member arranged on an outer circumferential section of a distal end of a first gas nozzle so as to guide a fluid flowing through a second flow passage outward in a radial direction; and a contraction forming member that is arranged on an upstream side of the guide member with respect to the flow direction of the second flow passage so as to reduce the cross sectional area of the second flow passage. An outer diameter of the guide member is formed to be smaller than an inner diameter of an outer peripheral wall of a second gas nozzle. The first gas nozzle, the guide member, and the contraction forming member are configured so as to be integrally attachable/detachable along an axial direction of the first gas nozzle toward the outside of a furnace.

    Combustion device
    5.
    发明授权
    Combustion device 有权

    公开(公告)号：US10359193B2

    公开(公告)日：2019-07-23

    申请号：US14902961

    申请日：2014-07-08

    Applicant: MITSUBISHI HITACHI POWER SYSTEMS, LTD.

    Inventor： Kenji Kiyama ,  Miki Shimogori ,  Toshihiko Mine ,  Satoshi Tadakuma ,  Kenichi Ochi ,  Koji Kuramashi ,  Yusuke Ochi ,  Akira Baba ,  Yuki Kondo

    IPC: F23L9/02 ,  F23L9/04 ,  F23C6/04 ,  F23C5/28

    Abstract: In accordance with the flow distribution of combustion gas including an unburned portion, an after-air port (AAP) arranged downstream of the two-stage combustion burner can effectively reduce the unburned portion by dividing as appropriate so as to avoid interaction, and by mixing together, two types of after-air having functions of linearity and spreading. As the configuration of this AAP, a primary nozzle for supplying primary after-air and having a vertical height greater than the horizontal width is provided in the center in the opening of the AAP, a secondary nozzle for supplying secondary after-air is provided in the opening outside of the primary nozzle, and one or more secondary after-air guide vanes having a fixed or variable tilt angle relative to the after-air port center axis are provided at the outlet of the said secondary nozzle to deflect and supply the secondary after-air horizontally to the left or right.

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