SYSTEM AND METHOD FOR STACK HEAT RECOVERY
    14.
    发明公开

    公开(公告)号:US20240219024A1

    公开(公告)日:2024-07-04

    申请号:US17921325

    申请日:2022-02-04

    IPC分类号: F23J15/06 F23J3/06

    摘要: A system and method are presented for recovering heat from flue gas produced by a recovery boiler in a pulp and paper mill, the recovery boiler having a flue stack. Flue gas is drawn from the flue stack and passed through a first and second condensing heat exchangers before exiting through a separate stack. The first heat exchanger is used to heat boiler feedwater whereas the second heat exchanger is used to produce process hot water for use in the pulp and paper mill. Steam previously used to heat the boiler feedwater and produce the process hot water can now be used to generate electricity that can be used for the pulp and paper mill operations or to export to the electrical power grid.

    Ash classifier-cooler-combustor
    16.
    发明授权
    Ash classifier-cooler-combustor 失效
    灰分类器 - 冷却器 - 燃烧器

    公开(公告)号:US4969404A

    公开(公告)日:1990-11-13

    申请号:US341337

    申请日:1989-04-21

    申请人: Michael J. Virr

    发明人: Michael J. Virr

    IPC分类号: F23G7/00 F23C10/26 F23J3/06

    CPC分类号: F23C10/26 F23J2900/01002

    摘要: A method for treating ash produced by waste coal fluidized bed boilers in which hot ash fines and heated secondary air are introduced into the boiler as the coarse ash is cooled. An ash treatment system for cooperation with a fluidized bed boiler operating on waste fuel having a high ash content receives and classifies hot ash from the boiler, returns ash fines to the boiler, cools coarse ash fines for disposal and burns carbon associated with the ash received from the boiler.

    Method and device for cooling flue dust
    17.
    发明授权
    Method and device for cooling flue dust 失效
    冷却烟尘的方法和装置

    公开(公告)号:US4877423A

    公开(公告)日:1989-10-31

    申请号:US257992

    申请日:1988-10-14

    CPC分类号: F23J3/06 F23C10/16

    摘要: Flue dust precipitated from the compressed gas from a fluidized-bed combustion chamber is conveyed by flue gas to an air-lock system while simultaneously being cooled to above the water and acid dew point of the flue gas. As it enters the air-lock system, the dust is separated from the flue gas and, once it has left the air-lock system, the dust is conveyed by air while simultaneously being cooled to a final temperature at which it can be removed.

    摘要翻译: 从流化床燃烧室的压缩气体中沉淀的烟尘通过烟道气输送到空气锁定系统,同时被冷却到废气的水和酸露点以上。 当进入气锁系统时,灰尘与烟气分离,一旦离开了空气锁定系统,灰尘就被空气输送,同时被冷却到可以去除的最终温度。

    Pneumatic conveying system with directional change of a gas/particulate
material stream
    18.
    发明授权
    Pneumatic conveying system with directional change of a gas/particulate material stream 失效
    气体输送系统,气体/颗粒物料流定向变化

    公开(公告)号:US4767243A

    公开(公告)日:1988-08-30

    申请号:US832954

    申请日:1986-02-26

    申请人: Roine Brannstroom

    发明人: Roine Brannstroom

    摘要: A pneumatic conveying system for conveying particulate material includes a connection chamber for changing the direction of flow so as to bring about a pressure drop. An upstream tube and a downstream tube are connected, spaced from each other, to an end wall in the connection chamber. Between the tubes, the end wall is formed with a double-curved surface bulging inwards towards the connection chamber, said surface being suitably saddle-shaped.

    摘要翻译: 用于输送颗粒材料的气动输送系统包括用于改变流动方向以产生压力降的连接室。 上游管和下游管彼此间隔地连接到连接室中的端壁。 在管之间,端壁形成有朝向连接室向内膨胀的双曲面,所述表面适当地鞍形。