APPARATUS AND METHOD FOR GRINDING WEBS MADE OF FIBER MATERIAL
    22.
    发明公开
    APPARATUS AND METHOD FOR GRINDING WEBS MADE OF FIBER MATERIAL 审中-公开
    设备和方法进行研磨织物制成的纤维材料

    公开(公告)号:EP1102895A1

    公开(公告)日:2001-05-30

    申请号:EP99936630.5

    申请日:1999-07-22

    申请人: IDI-Head OY

    IPC分类号: D21H25/00

    CPC分类号: D21H25/005

    摘要: Apparatus and method for grinding levelling of paper, cardboard or a similar continuous web manufactured from vegetative based fibrous raw-material, said apparatus comprising a plurality of grinding means such as rolls or belts preferably arranged on both sides of the web, said means being deviated from the moving direction of the web or the web being deviated from these by means of squeeze rolls and which rolls are characterised by being trioelectrically charged with a similar electrical charge as the ground surface. The web tension can be regulated by moving the grinding means or the web from its direction of movement and the dust generated at the grinding is removed by a vacuum system.

    PROCESS FOR PREPARING CALCIUM CARBONATE PARTICLES
    27.
    发明公开
    PROCESS FOR PREPARING CALCIUM CARBONATE PARTICLES 有权
    制备碳酸钙颗粒的方法

    公开(公告)号:EP1027287A1

    公开(公告)日:2000-08-16

    申请号:EP98943910.4

    申请日:1998-09-08

    申请人: FP-Pigments Oy

    发明人: VIRTANEN, Pentti

    IPC分类号: C01F11/18

    摘要: The invention is related to a method for forming calcium carbonate. In the method, calcium oxide is reacted with carbonate ions in the presence of water to produce calcium carbonate. According to the invention, the formation is carried out directly from calcium oxide to calcium carbonate without intermediate stages in a three-phase precipitation, whereby the hydration of the calcium oxide to calcium hydroxide and the carbonation of the hydrated part are carried out immediately after one another under so intensive agitation that the calcium carbonate elements thus created are detached from the surface of the calcium hydroxide. The mixing is preferably carried out in a fluid medium where the amount of gaseous phase is at least 20 parts by volume and the amount of liquid phase is 0.5 to 1 part per one part by volume of the solid matter of the suspension. In the process, the desired end product, PCC, can be prepared in a very short residence time and with a small operational content.

    摘要翻译: 本发明涉及一种形成碳酸钙的方法。 在该方法中,氧化钙在水存在下与碳酸根离子反应生成碳酸钙。 根据本发明,所述地层直接由氧化钙转化为碳酸钙,而没有中间阶段的三相沉淀,由此氧化钙水合成氢氧化钙和水合部分碳酸化在一个 另一种在剧烈搅拌下使得由此产生的碳酸钙元素从氢氧化钙表面分离。 混合优选在液体介质中进行,其中气相的量为至少20体积份并且液体的量为每体积份悬浮液的固体物质0.5至1份。 在此过程中,所需的最终产品PCC可以在非常短的停留时间内制备,且操作内容少。

    Process for producing a fuel component
    28.
    发明公开
    Process for producing a fuel component 无效
    维尔法赫恩·赫斯特伦

    公开(公告)号:EP0994088A1

    公开(公告)日:2000-04-19

    申请号:EP99660161.3

    申请日:1999-10-18

    摘要: The invention relates to process for dimerizing olefinic hydrocarbon feedstock, to hydrocarbon compositions and to fuel components produced by the process. According to the invention, fresh olefinic hydrocarbon feedstock is fed to a reaction zone of a system including at least one reaction zone and at least one distillation zone. The olefinic hydrocarbon feedstock is contacted with an acidic catalyst in the presence of an oxygenate at conditions in which at least a part of the olefins dimerizes. The effluent from the reaction zone is conducted to the distillation zone where dimerized reaction product is separated from effluent, and at least one flow comprising oxygenate is withdrawn from the side of at least one distillation column. The flow is circulated from distillation zone back to dimerization. The reaction mixture is recovered and optionally hydrogenated to form a parafinic reaction product.

    摘要翻译: 本发明涉及将烯烃原料二烃化成烃组合物和通过该方法生产的燃料组分的方法。 根据本发明,将新鲜的烯烃原料进料至包含至少一个反应区和至少一个蒸馏区的体系的反应区。 在至少一部分烯烃二聚的条件下,在含氧化合物的存在下,烯烃原料与酸性催化剂接触。 来自反应区的流出物被传导到蒸馏区,其中二聚反应产物与流出物分离,并且至少一个包含含氧化合物的流从至少一个蒸馏塔的侧面排出。 流量从蒸馏区循环回二聚。 将反应混合物回收并任选地氢化以形成路旁反应产物。

    Filler and pigment
    30.
    发明公开
    Filler and pigment 有权
    填料和颜料

    公开(公告)号:EP0942099A3

    公开(公告)日:2000-04-12

    申请号:EP99660045.8

    申请日:1999-03-12

    申请人: Metsä-Serla Oyj

    发明人: Silenius, Petri

    IPC分类号: D21H17/67 D21H19/38

    摘要: The present invention relates to the use of calcium oxalate as a filler or pigment. In particular described herein is a method of reducing the combustion residue of coated paper or cardboard products by replacing at least a part of the conventional pigments and filler needed for achieving predetermined optical properties with calcium oxalate.