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    MEASUREMENT APPARATUS AND METHOD
    8.
    发明申请
    MEASUREMENT APPARATUS AND METHOD 审中-公开

    公开(公告)号：US20170096774A1

    公开(公告)日：2017-04-06

    申请号：US14875055

    申请日：2015-10-05

    申请人： VALMET AUTOMATION OY

    发明人： Arvo RAHIKKALA ,  Kari LAMPELA

    IPC分类号： D21C9/10 ,  D21H21/32 ,  D21C9/12

    CPC分类号： D21C9/1052 ,  D21C9/02 ,  D21C9/1005 ,  D21C9/123 ,  D21C9/14 ,  D21C9/142 ,  D21H21/32

    摘要： A bleaching apparatus comprises a measurement chamber has a first substance, the amount of the first substance in the measurement chamber being known. A dosing unit inputs a second substance to the measurement chamber for causing a chemical reaction between the first substance and the second substance, one of the first substance and the second substance being chlorine dioxide and another of the first substance and the second substance being filtered sample from pulp slurry of a pulp process. At least one sensor performs detection of a property known to depend on the chemical reaction between the first substance and the second substance as a function of time. A data processing unit determines chemical demand of chlorine dioxide for washing loss in a bleaching sub-process on the basis of at least one value in the detected property within a known period of time after the input of the second substance.

    Processes for producing high-yield pulp and paper products
    9.
    发明授权
    Processes for producing high-yield pulp and paper products 有权
    生产高产纸浆和纸制品的方法

    公开(公告)号：US09556558B2

    公开(公告)日：2017-01-31

    申请号：US14590681

    申请日：2015-01-06

    申请人： API Intellectual Property Holdings, LLC

    发明人： Vesa Pylkkanen ,  Theodora Retsina

    IPC分类号： D21C1/02 ,  D21C9/02 ,  D21C11/10 ,  D21B1/02 ,  D21H11/08 ,  D21C11/00

    CPC分类号： D21C11/10 ,  D21B1/021 ,  D21C1/02 ,  D21C9/02 ,  D21C11/0007 ,  D21C11/0042 ,  D21H11/08

    摘要： An improved semichemical pulping process is disclosed to reduce washing costs and recovery process costs, while producing equivalent pulp and paper products. In some variations, the invention provides a process for producing a paper product from biomass, comprising: digesting lignocellulosic biomass in the presence of steam and/or hot water to generate an intermediate pulp material and a liquid phase containing extracted hemicelluloses; mechanically refining the intermediate pulp material, to generate a refined pulp material; and introducing the refined pulp material, the liquid phase, and optionally a separate solid material to a paper machine, to produce a paper product. The process optionally employs no washing step. When the liquid phase is washed from the intermediate pulp material or the refined pulp material using an aqueous wash solution, the wash filtrate may be introduced directly or indirectly to the paper machine.

    摘要翻译： 公开了一种改进的半化学制浆方法，以减少洗涤成本和回收过程成本，同时生产等效的纸浆和纸制品。 在一些变型中，本发明提供了一种用于从生物质生产纸产品的方法，包括：在蒸汽和/或热水存在下消化木质纤维素生物质以产生中间纸浆材料和含有提取的半纤维素的液相; 机械地精炼中间纸浆材料，以产生精制纸浆材料; 并将精制纸浆材料，液相和任选的单独的固体材料引入造纸机，以生产纸制品。 该方法任选地不采用洗涤步骤。 当使用水性洗涤溶液从中间纸浆材料或精炼纸浆材料洗涤液相时，洗涤滤液可以直接或间接引入造纸机。