METHOD AND APPARATUS FOR FEEDING CHEMICALS INTO A PROCESS LIQUID FLOW

    公开(公告)号:WO2006008333A3

    公开(公告)日:2006-01-26

    申请号:PCT/FI2005/000329

    申请日:2005-07-12

    Inventor: MATULA, Jouni

    Abstract: The present invention relates to a method and apparatus for feeding chemicals into a process liquid flow. The object of a preferred embodiment of the method and the apparatus of the present invention is feeding retention /chemical together with an additive, which may be another chemical or for example a mineral, to paper suspension flow to be fed to a paper machine. The method and the apparatus of the invention are particularly well applicable in feeding an additive of the paper manufacture, such as a filler, together with a retention chemical to paper pulp essentially simultaneously.

    A METHOD AND REACTOR FOR IN-LINE PRODUCTION OF CALCIUM CARBONATE INTO THE PRODUCTION PROCESS OF A FIBROUS WEB
    9.
    发明申请
    A METHOD AND REACTOR FOR IN-LINE PRODUCTION OF CALCIUM CARBONATE INTO THE PRODUCTION PROCESS OF A FIBROUS WEB 审中-公开
    将碳酸钙直接生产到纤维网的生产过程中的方法和反应器

    公开(公告)号:WO2011110744A2

    公开(公告)日:2011-09-15

    申请号:PCT/FI2011050203

    申请日:2011-03-09

    CPC classification number: D21H17/70 D21H17/675

    Abstract: The present invention relates to a method of and reactor for in-line production of calcium carbonate into a target suspension flow. The method and reactor according to the invention are suitable for introducing and mixing lime milk and carbon dioxide into a target suspension flow so that the calcium carbonate crystals formed during their reaction are not allowed to precipitate onto the walls (12) of the reactor (10), because the reactor is provided with means (16, 18, 20) for preventing the carbonate crystals from attaching to the surfaces of the structures located in the reaction zone.

    Abstract translation: 本发明涉及将碳酸钙直接生产成目标悬浮液流的方法和反应器。 根据本发明的方法和反应器适用于将石灰乳和二氧化碳引入和混合到目标悬浮液流中,使得在其反应期间形成的碳酸钙晶体不允许沉淀到反应器(10)的壁(12)上 ),因为反应器设置有用于防止碳酸盐晶体附着到位于反应区域中的结构表面的装置(16,18,20)。

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