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    Recovering Mono-ethylene Glycol
    23.
    发明公开
    Recovering Mono-ethylene Glycol 审中-公开

    公开(公告)号：US20240182391A1

    公开(公告)日：2024-06-06

    申请号：US18556146

    申请日：2021-04-19

    Applicant: UPM-KYMMENE CORPORATION

    Inventor： Isko Kajanto

    IPC: C07C29/82 ,  B01D3/32 ,  B01D3/36 ,  B01D3/42

    CPC classification number: C07C29/82 ,  B01D3/322 ,  B01D3/36 ,  B01D3/4205

    Abstract: A method for recovering mono-ethylene glycol from a mixture feed comprising bio-derived diols is disclosed. The mixture feed comprises mono-ethylene glycol in an amount of at least 80 weight-% of the total weight of the mixture feed. The method comprises: —providing the mixture feed into a distillation column, wherein a distillation process is carried out, wherein the distillation column comprises at least 80 theoretical stages and wherein the mixture feed is fed into the distillation column at a point, which is at a height of 5-20% of the total height of the distillation column as calculated from the top of the distillation column, wherein the total height of the distillation column is determined based on the number of theoretical stages, and wherein the distillation process is carried out with a reflux ratio of 20-200; and —recovering mono-ethylene glycol. Further is disclosed a distillation arrangement.

    Process for producing a nanofibrillar cellulose hydrogel
    24.
    发明授权
    Process for producing a nanofibrillar cellulose hydrogel 有权

    公开(公告)号：US10822743B2

    公开(公告)日：2020-11-03

    申请号：US15578778

    申请日：2016-06-02

    Applicant: UPM-KYMMENE CORPORATION

    Inventor： Isko Kajanto ,  Markus Nuopponen

    IPC: D21B1/30 ,  C08B15/04 ,  A61K8/04 ,  A61K8/73 ,  A61K9/06 ,  A61K31/717 ,  A61Q19/00 ,  C12N5/00 ,  D21C9/02 ,  D21C9/10

    Abstract: A process for producing a nanofibrillar cellulose hydrogel comprises obtaining bleached cellulose pulp fibers and providing an aqueous suspension thereof; and subjecting the cellulose pulp fibers in the aqueous suspension to at least 2 cycles of high pressure mechanical disintegration to obtain a nanofibrillar cellulose hydrogel and thereby reducing the number of viable microorganisms present in the suspension by a factor of at least 102; wherein all steps of the process after obtaining the bleached cellulose pulp fibers are performed under conditions of ISO 8 of ISO 14644-1 cleanroom standards or stricter. A nanofibrillar cellulose hydrogel, a system for producing the same and the use of a disintegrating apparatus are also disclosed.

    METHOD FOR PRODUCING NANOFIBRILLAR CELLULOSE AND NANOFIBRILLAR CELLULOSE PRODUCT
    29.
    发明申请
    METHOD FOR PRODUCING NANOFIBRILLAR CELLULOSE AND NANOFIBRILLAR CELLULOSE PRODUCT 审中-公开

    公开(公告)号：US20170211230A1

    公开(公告)日：2017-07-27

    申请号：US15125343

    申请日：2015-03-27

    Applicant: UPM-KYMMENE CORPORATION

    Inventor： Markus Nuopponen ,  Juha Tamper ,  Isko Kajanto

    IPC: D21B1/14 ,  D21H11/18

    Abstract: In a method for producing nanofibrillar cellulose, cellulose based fibre material, in which internal bonds in cellulose fibres have been weakened by preliminary modification of cellulose, is subjected to disintegration treatment in form of pulp comprising fibres and liquid. The fibre material is supplied at a consistency higher than 10 wt-%, preferably at least 15 wt-%, to a disintegration treatment where fibrils are detached from the fibre material by joint effect of repeated impacts to the fibre material by fast moving successive elements and the weakened internal bonds of the cellulose fibres. The nanofibrillar cellulose is withdrawn from the disintegration treatment at dry matter which is equal or higher than the consistency of the fibre material. In the disintegration treatment, the fibre material is supplied through several counter-rotating rotors (R1, R2, R3 . . . ) outwards in the radial direction with respect to the rotation axis (RA) of the rotors in such a way that the material is repeatedly subjected to shear and impact forces by the effect of the blades (1) of the different counter-rotating rotors.

    METHOD FOR CATALYTIC OXIDATION OF CELLULOSE AND METHOD FOR MAKING A CELLULOSE PRODUCT
    30.
    发明申请
    METHOD FOR CATALYTIC OXIDATION OF CELLULOSE AND METHOD FOR MAKING A CELLULOSE PRODUCT 审中-公开
    纤维素催化氧化方法及制备纤维素产品的方法

    公开(公告)号：US20150322171A1

    公开(公告)日：2015-11-12

    申请号：US14650666

    申请日：2013-12-13

    Applicant: UPM-KYMMENE CORPORATION

    Inventor： Taisto Tienvieri ,  Isko Kajanto ,  Tero Ojala ,  Sami Saarela ,  Markus Nuopponen ,  Timo Paakkonen ,  Tapani Vuorinen

    IPC: C08B15/04

    CPC classification number: C08B15/04 ,  D21C9/00 ,  Y10T428/298

    Abstract: Cellulose is oxidized catalytically using a heterocyclic nitroxyl radical as catalyst, main oxidant acting as oxygen source, and an activator of the heterocyclic nitroxyl radical. The oxidation is performed in a reaction medium which is at medium consistency of cellulosic pulp, which is above 6%, more preferably equal to or higher than 8%, and most preferably in the range of 8-12%. The reaction medium is mixed in a reactor through circulation of the reaction medium back to the reactor.

    Abstract translation: 使用杂环硝酰基作为催化剂，作为氧源的主要氧化剂和杂环硝酰基的活化剂，氧化催化纤维素。 氧化在纤维素浆的中等稠度的反应介质中进行，其中6％以上，更优选等于或高于8％，最优选在8-12％的范围内。 将反应介质通过反应介质循环回到反应器中而在反应器中混合。

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