A METHOD AND CONTROL SYSTEM FOR CONTROLLING A CONVEYOR SYSTEM AND A PLANT FOR BALING PAPER PULP
    2.
    发明申请
    A METHOD AND CONTROL SYSTEM FOR CONTROLLING A CONVEYOR SYSTEM AND A PLANT FOR BALING PAPER PULP 审中-公开
    一种控制输送机系统和用于打结纸浆的设备的方法和控制系统

    公开(公告)号:WO9937563A8

    公开(公告)日:1999-10-07

    申请号:PCT/SE9900085

    申请日:1999-01-21

    Inventor: EDSTROEM TOMAS

    CPC classification number: B65G43/10

    Abstract: In a method and control system for controlling a conveyor system comprising a plurality of conveyors, each of which is allocated a control unit (44, 46, 48), the conveyors are controlled in accordance with status data from the conveyors. Each conveyor is brought to communicate (via 50, 52, 53, 54) only with its adjacent conveyors, which are in turn brought to communicate only with their adjacent conveyors, etc. The communication comprises the control units (44, 46, 48) of each conveyor transmitting and receiving control information, said information being created on the basis of the conveyor's own status data and control information from its adjacent conveyors. Control signals for controlling the conveyor are created on the basis of the conveyor's own status data and the control information received by the conveyor's control unit from control units of adjacent conveyors. The control units can be standardized and dimensioned for a maximum number of adjacent conveyors. A plant for baling paper pulp comprises a conveyor system having such a control system.

    Abstract translation: 在用于控制包括多个输送机的输送机系统的方法和控制系统中,每个输送机分配有控制单元(44,46,48),根据来自输送机的状态数据控制输送机。 每个传送带仅与其相邻的传送带(通过50,52,53,54)进行通信,传送带又与其相邻的传送带等进行通信。通信包括控制单元(44,46,48) 每个传送器传送和接收控制信息,所述信息是基于传送器自身的状态数据和来自其相邻传送器的控制信息而创建的。 用于控制输送机的控制信号是基于输送机自身的状态数据和由输送机的控制单元从相邻输送机的控制单元接收的控制信息而创建的。 控制单元可以标准化和尺寸为最大数量的相邻输送机。 用于打包纸浆的设备包括具有这种控制系统的输送机系统。

    OXYGEN DELIGNIFICATION OF LIGNOCELLULOSIC PULP IN TWO STEPS

    公开(公告)号:CA2231048C

    公开(公告)日:2007-11-20

    申请号:CA2231048

    申请日:1996-09-18

    Abstract: A method of oxygen delignification of pulp from lignocellulosic material at medium concentration in two steps. An extended delignification is obtained in that the temperature in the first step is hel d below 90 .degree.C, that the difference in temperature between the steps is lower than 20 .degree.C. The pressure in the first step is 4-10 bar and i n the second step 2-5 bar, and the pressure in the first step is higher than in the second step. The oxygen addition to the first step is high, 25-50 kg/ton pulp, that alkali is added only to the first step for obtaining high alkalinity in the pulp, 25-50 kg alkali per ton pulp. The stay-time in the first step is 10-30 min and in the second step 45-180 min.

    A METHOD OF CONTINUOUS PRODUCTION OF LIGNOCELLULOSIC BOARDS

    公开(公告)号:CA2226508C

    公开(公告)日:2006-05-23

    申请号:CA2226508

    申请日:1996-07-25

    Abstract: A method for the continuous production of boards having a lignocellulosic fiber material wherein the material is broken up into particles and/or fibers that are dried, glued and formed and pressed to a finished board. The mat is pre-compressed while steam is introduced in such a limited amount during the pre-compression that the temperature of the fibrous mat increases to a value within an interval of 60-95 .degree.Celsius. In this way, the spring back characteristics of the fiber m at is reduced so that its resistance to compression is reduced and the thickness can be reduced more in the pre-compression while the temperature i s not so high to initiate a curing process.

    METHOD FOR CONTROLLING OXYGEN DELIGNIFICATION OF PULP

    公开(公告)号:CA2270598C

    公开(公告)日:2005-05-03

    申请号:CA2270598

    申请日:1997-11-06

    Abstract: A method of controlling oxygen delignification of pulp, i.e. reduction of th e kappa number of the pulp, where the delignification is carried out in two stages, and the main portion of the chemicals required fo r the delignification is added to the first stage. The ingoing kappa number of the pulp prior to the delignification and the reduction of t he kappa number of the pulp during the total delignification in the two stages are used for adjusting the chemical addition to the first stage. The control is carried out so that higher ingoing kappa number yields lower charge and higher kappa number reduction yields higher charge, calculated per reduced kappa number unit. Said chemical addition to the first stage in its tum is used for control the temperature i n the second stage.

    DEVICE FOR ADMIXING A PROCESSING AGENT TO A PULP SUSPENSION

    公开(公告)号:CA2176938C

    公开(公告)日:2004-07-20

    申请号:CA2176938

    申请日:1994-10-27

    Inventor: FORSLUND KJELL

    Abstract: A device for admixing a processing agent to a pulp suspension. The device co mprises a cylindric lower portion (10) of a vessel with an agitator (11) fitted into the wall of said vessel portion, which agitator is intended to bring about a pulp flow across the vesse l portion (10). Means are provided (13) for the supply of the processing agent to the pulp f low. A flow divider (15) is located in the vessel portio n (10) diametrically opposite the agitator (11). Said flow divider (15) comprises a substantially vertical front distribution edge (16) and are-shaped surfaces (17) extending from the distribution edge (16) one in each directio n, which surfaces are substantially vertical and join th e wall of the vessel portion (10).

    A PAIR OF CO-OPERATING REFINING ELEMENTS INTENDED FOR A DISCREFINER

    公开(公告)号:CA2235544C

    公开(公告)日:2004-03-30

    申请号:CA2235544

    申请日:1996-10-09

    Abstract: A pair of co-operating refining elements (10, 11) intended for a disc refiner for finely disintegrating and refining lump-shaped lignocellulosic material in a refiner gap (5, 6) between two opposed refining discs (1, 2). The outer portion (6) of the refiner gap is angular in relation to the radial plane, and the refining disc (2) located outside the outer portion (6) of the refiner gap is rotary. The refining elements (10, 11) are intented to be placed directly in front of each other on opposed refining discs in this outer portion (6) of the refiner gap. The refining element (10) located inside is provided with at least one wing (14) freely projecting in the direction to the inner portion (5) of the refiner gap. The refining element (11) located outside has an inlet portion (15) located directly in front of the wing (14) which is formed with a concavely curved surface (16). The wing is provided to throw the material against the curved surface (16) for changing the direction of movement of the material into the outer angular portion (6) of the refiner gap.

    REFINING SEGMENT
    10.
    发明专利

    公开(公告)号:CA2109125C

    公开(公告)日:2004-03-30

    申请号:CA2109125

    申请日:1993-10-25

    Inventor: VIRVING NILS

    Abstract: A refining segment for a disc refiner fox defibering and processing lignocellulose-containing fiber material. The refining segment has the shape of a circle sector and a refining surface with bars and intermediate grooves, which extend across substantially the entire refining surface. The bars are oblique in relation to the radius of the refining segment, and the angle of the bars in relation to said radius is greatest closest to the centre and thereafter decreases in radial outward direction. The angle closest to the centre shall be in the interval 20-45.degree. and farthest out in the interval -10.degree. to +20.degree..

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