Arrangement for feeding wood particles into impregnating

    公开(公告)号:US12214522B2

    公开(公告)日:2025-02-04

    申请号:US17426254

    申请日:2019-01-29

    Abstract: An arrangement for feeding wood particles into an impregnating stage of a wood treatment process comprises a feed silo (301, 701), at least one impregnating vessel (305, 601, 602, 603, 703) for receiving wood particles into said impregnating stage, and two or more conveyors (302, 303, 304, 501, 502, 503, 702) between said feed silo (301, 701) and said at least one impregnating vessel (305, 601, 602, 603, 703), for transferring wood particles from said feed silo (301, 701) to said at least one impregnating vessel (305, 601, 602, 603, 703). Each of said conveyors (302, 303, 304, 501, 502, 503, 702) is a compressing conveyor for applying pressure to the wood particles on their way through the respective conveyor.

    A METHOD AND AN APPARATUS FOR TREATING PLANT BASED RAW MATERIAL WITH AN ENZYMATIC HYDROLYSIS

    公开(公告)号:US20240401090A1

    公开(公告)日:2024-12-05

    申请号:US18800472

    申请日:2024-08-12

    Abstract: A method for treating plant based raw material with an enzymatic hydrolysis. The plant based raw material is treated to form lignocellulosic material. The lignocellulosic material or a solid fraction thereof is subjected to the enzymatic hydrolysis. The method includes treating the plant based raw material in at least one treatment stage for forming the lignocellulosic material including over 80% fine solid particles that are fiber-like or indefinable particles smaller than 0.2 mm and the viscosity of the lignocellulosic material is below 18000 mPas at 15% dry matter content. The method further includes subjecting the lignocellulosic material or at least one solid fraction thereof into the enzymatic hydrolysis for forming a lignin based material. The method further includes subjecting the lignin based material into at least one solid-liquid separation stage after the enzymatic hydrolysis and separating a lignin fraction and a soluble carbohydrate containing fraction.

    RECOVERING MONO-PROPYLENE GLYCOL BY USING A DISTILLATION SOLVENT

    公开(公告)号:US20240327319A1

    公开(公告)日:2024-10-03

    申请号:US18293462

    申请日:2022-09-05

    Inventor: Isko KAJANTO

    CPC classification number: C07C29/84

    Abstract: A method for recovering mono-propylene glycol from a mixture feed comprising bio-derived diols and an organic impurity is disclosed. The method comprises: —providing the mixture feed into a first distillation column comprising 20-200 theoretical stages, in which first distillation column a first distillation process is carried out; —providing a distillation solvent into the first distillation column, wherein the distillation solvent is a diol or a sugar alcohol having a boiling point that is at least 80° C. higher than the boiling point of mono-propylene glycol at atmospheric pressure, and wherein the weight ratio of the distillation solvent to the total mixture feed is 2.5:1-10:1; —separating the organic impurity from mono-propylene glycol with the aid of the distillation solvent by carrying out the first distillation process at a top temperature of 70-140° C., and a top pressure of 0.01-0.2 bar, and with a reflux ratio of 2-50; and —recovering mono-propylene glycol.

    BCTMP-Tailored SCK paper for release liner
    5.
    发明公开

    公开(公告)号:US20240287741A1

    公开(公告)日:2024-08-29

    申请号:US18113743

    申请日:2023-02-24

    CPC classification number: D21H11/20

    Abstract: The invention relates to a method for manufacturing SCK paper having a basis weight in the range of 50 to 70 g/m2, wherein an optimal combination of BSKP and BCTMP is used to adjust the properties of the fiber furnish. In SCK papers with low basis weight the bulk of the formed paper web upon paper manufacturing may be controlled by means of the fiber furnish, without downgauging and without adverse effects to other paper properties, which would prevent the use of the SCK paper as substrate layer in a release liner. Thus SCK paper with exceptionally high share of BCTMP in the fiber furnish may be produced into the same thickness as was possible before for a conventional supercalendered kraft paper having a higher basis weight, while maintaining other quality characteristics of the paper sufficient for use as a substrate layer of an industrial release liner.

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