Activated carbon as mercury release control agent in gypsum calcination
    3.
    发明授权
    Activated carbon as mercury release control agent in gypsum calcination 有权
    活性炭作为石膏煅烧中的汞释放控制剂

    公开(公告)号:US07507287B1

    公开(公告)日:2009-03-24

    申请号:US11937844

    申请日:2007-11-09

    申请人: Wenqi Luan

    发明人: Wenqi Luan

    IPC分类号: C04B11/00

    CPC分类号: C04B11/264 C04B11/005

    摘要: A method for providing effective mercury release control during gypsum calcination is disclosed. The method comprises providing a reactor and gypsum containing mercury; providing a mercury sorbent, such as activated carbon and/or derivatives thereof in the reactor; and calcining the gypsum in the reactor to form stucco. The mercury contaminant present in the gypsum is sorbed by the mercury sorbent during the calcination process. The mercury content of the stucco is substantially similar in amount to the mercury content of the uncalcined gypsum.

    摘要翻译: 公开了一种在石膏煅烧期间提供有效的汞释放控制的方法。 该方法包括提供含有汞的反应器和石膏; 在反应器中提供汞吸附剂,例如活性炭和/或其衍生物; 并在反应器中煅烧石膏以形成灰泥。 存在于石膏中的汞污染物在煅烧过程中被汞吸附剂吸收。 灰泥中的汞含量与未煅烧石膏的汞含量基本相似。

    METHOD AND APPARATUS FOR PRESSURIZED CALCINATION OF GYPSUM
    4.
    发明申请
    METHOD AND APPARATUS FOR PRESSURIZED CALCINATION OF GYPSUM 有权
    方法和装置用于压力计算

    公开(公告)号:US20090257946A1

    公开(公告)日:2009-10-15

    申请号:US12388793

    申请日:2009-02-19

    IPC分类号: C01F11/46 B01J19/00

    摘要: A method for calcining gypsum in a pressurized reactor by injecting combustion gases and air into the pressurized reactor to create a fluidized bed of gypsum, and heating the fluidized bed of gypsum in the pressurized reactor sufficiently to form a calcined hemihydrate.

    摘要翻译: 一种通过将加压反应器中的燃烧气体和空气注入加压反应器中以产生石膏流化床并在加压反应器中充分加热石膏流化床以形成煅烧半水合物的方式来在加压反应器中煅烧石膏。

    Method and apparatus for pressurized calcination of gypsum
    5.
    发明授权
    Method and apparatus for pressurized calcination of gypsum 有权
    用于加压煅烧石膏的方法和装置

    公开(公告)号:US07815889B2

    公开(公告)日:2010-10-19

    申请号:US12388793

    申请日:2009-02-19

    IPC分类号: C01B13/14

    摘要: A method for calcining gypsum in a pressurized reactor by injecting combustion gases and air into the pressurized reactor to create a fluidized bed of gypsum, and heating the fluidized bed of gypsum in the pressurized reactor sufficiently to form a calcined hemihydrate.

    摘要翻译: 一种通过将加压反应器中的燃烧气体和空气注入加压反应器中以产生石膏流化床并在加压反应器中充分加热石膏流化床以形成煅烧半水合物的方式来在加压反应器中煅烧石膏。