Un método para controlar un proceso de fabricación de pasta de una manera predictiva

    公开(公告)号:ES2730759T3

    公开(公告)日:2019-11-12

    申请号:ES11851854

    申请日:2011-12-16

    Applicant: STORA ENSO OYJ

    Abstract: Un método para controlar un proceso de fabricación de pasta en el que las virutas de madera se transportan a un recipiente de impregnación y/o a una lejiadora donde dichas virutas de madera se tratan con un licor que contiene productos químicos, comprendiendo el método las etapas de: a. estimar el flujo másico de virutas de madera secas necesario en el recipiente de impregnación o en la lejiadora para lograr la producción de pasta deseada, flujo másico estimado que se logra dividiendo la producción de pasta deseada con un rendimiento de cocción estimado, b. medir el flujo másico real de las virutas de madera húmedas transportadas al recipiente de impregnación o a la lejiadora mediante el uso de una escala de transportador de virutas, un escáner de flujo másico o un medidor de flujo de madera radiante, c. calcular una relación entre el flujo másico real de las virutas de madera húmedas y el flujo másico estimado de las virutas de madera secas, d. controlar el proceso de fabricación de pasta basándose en dicha relación calculada.

    Förfarande för utvinning av råtallolja

    公开(公告)号:SE1450683A1

    公开(公告)日:2015-12-06

    申请号:SE1450683

    申请日:2014-06-05

    Applicant: STORA ENSO OYJ

    Abstract: Den föreliggande uppfinningen avser ett förfarande för utvinning av råtallolja från en såpa, vilket förfarande innefattar stegen: att bestämma en korrelation mellan halten av råtallolja och vatteninnehållet hos såpan, att bestämma en mängd syra och vatten som krävs för att separera en optimal mängd av råtallolja från såpan beroende av halten av råtallolja hos såpan, att mäta vatteninnehållet hos såpan, att tillsätta den optimala mängden av syra och vatten till såpan, att blanda den tillsatta syran och vattnet med såpan, varigenom en surgjord såpa bildas och råtalloljan separeras, samt att utvinna den separerade råtalloljan från den surgjorda såpan.

    METHOD FOR RECOVERING CRUDE TALL OIL

    公开(公告)号:EP3152285A4

    公开(公告)日:2018-01-24

    申请号:EP15803495

    申请日:2015-06-02

    Applicant: STORA ENSO OYJ

    CPC classification number: C11B13/005 C11B3/006 C11B3/04 C11B13/02 Y02W30/74

    Abstract: The present invention relates to a method for recovering crude tall oil from a soap which method comprises the steps of: determining a correlation between the crude tall oil content and the water content of the soap, determining an amount of acid and water needed in order to separate an optimal amount of crude tall oil from the soap dependent on the crude tall oil content of the soap, measuring the water content of the soap, adding the optimal amount of acid and water to the soap, mixing the added acid and water with the soap whereby an acidulated soap is formed and the crude tall oil is separated and recovering the separated crude tall oil from the acidulated soap.

    A METHOD OF CONTROLLING A PULPING PROCESS IN A FEED-FORWARD MANNER
    4.
    发明公开
    A METHOD OF CONTROLLING A PULPING PROCESS IN A FEED-FORWARD MANNER 审中-公开
    VERFAHREN ZUR STEUERUNG EINES AUFSCHLUSSVERFAHRENS IN EINEMVORWÄRTSKOPPLUNGSVERFAHREN

    公开(公告)号:EP2655731A4

    公开(公告)日:2017-05-17

    申请号:EP11851854

    申请日:2011-12-16

    Applicant: STORA ENSO OYJ

    CPC classification number: D21C1/00 D21C3/22 D21C7/12

    Abstract: The invention discloses a method of controlling a pulping process wherein wood chips are conveyed to an impregnation vessel and/or to a digester where said wood chips are treated with a liquor comprising chemicals. According to the method of the invention a ratio between a measured, actual mass flow of moisture wood chips to an impregnation vessel or to a digester and an estimated mass flow of dry wood chips conveyed to the impregnation vessel or to the digester is calculated. Said ratio is used to control the pulping process. The method makes it possible to control e.g. the supply of chemicals, the liquor to wood ratio and the pulping temperature on-line, in a feed-forward manner.

    Abstract translation: 本发明公开了一种控制制浆过程的方法,其中将木屑输送到浸渍容器和/或蒸煮器中,其中所述木屑用包含化学品的液体处理。 根据本发明的方法,计算湿木片测量的实际质量流量与浸渍容器或蒸煮器之间的比率和输送至浸渍容器或蒸煮器的干木片的估计质量流量之间的比率。 所述比例用于控制制浆过程。 该方法可以控制例如 化学品的供应,液体与木材的比率以及在线的制浆温度,以前馈方式。

    BIOLOGICAL TREATMENT OF INDUSTRIAL ALKALINE STREAMS

    公开(公告)号:CA3106732A1

    公开(公告)日:2020-01-23

    申请号:CA3106732

    申请日:2019-07-16

    Abstract: The present invention relates to a process for the treatment of industrial alkaline streams comprising sulfide and carbonate, comprising the steps of: a) providing an industrial alkaline stream comprising sulfide and carbonate; b) supplying the industrial alkaline stream to a bioreactor comprising sulfide oxidizing bacteria and removing sulfide from the industrial alkaline stream by subjecting said stream to sulfide oxidizing bacteria in the presence of oxygen, and supplying a pH adjustment agent to the bioreactor to maintain a pH in the range in the range 8 to 11, to oxidize the sulfide to elemental sulfur, c) withdrawing from the bioreactor a treated industrial alkaline stream comprising elemental sulfur, wherein a portion of the sulfide oxidizing bacteria is removed from the bioreactor and mixed with the industrial alkaline stream prior to supplying the industrial alkaline stream to the bioreactor in step b).

    Método para la recuperación de aceite de resina crudo.

    公开(公告)号:CL2016003134A1

    公开(公告)日:2017-06-16

    申请号:CL2016003134

    申请日:2016-12-05

    Applicant: STORA ENSO OYJ

    Abstract: Un método para recuperar aceite de resina crudo desde un jabon, CARACTERIZADO porque comprende las etapas de: determinar una correlación entre el contenido de aceite de resina crudo y el contenido de agua del jabón, determinar una cantidad de ácido y agua que se necesita para separar una cantidad optima de aceite de resina crudo desde el jabon, en función del contenido de aceite de resina crudo del jabon, medir el contenido de agua del jabon, añadir Ia cantidad optima de ácido y agua al jabón, mezclar el ácido y el agua añadidos con el jabon, formando el jabón acidulado y se separa el aceite crudo de resina, y recuperar el aceite de resina crudo separado del jabon acidulado.

    METHOD FOR RECOVERING CRUDE TALL OIL

    公开(公告)号:CA2950870A1

    公开(公告)日:2015-12-10

    申请号:CA2950870

    申请日:2015-06-02

    Applicant: STORA ENSO OYJ

    Abstract: The present invention relates to a method for recovering crude tall oil from a soap which method comprises the steps of: determining a correlation between the crude tall oil content and the water content of the soap, determining an amount of acid and water needed in order to separate an optimal amount of crude tall oil from the soap dependent on the crude tall oil content of the soap, measuring the water content of the soap, adding the optimal amount of acid and water to the soap, mixing the added acid and water with the soap whereby an acidulated soap is formed and the crude tall oil is separated and recovering the separated crude tall oil from the acidulated soap.

    A PROCESS FOR CONTROLLING THE SODIUM AND SULFUR BALANCE IN A PULP MILL

    公开(公告)号:CA3106751A1

    公开(公告)日:2020-01-23

    申请号:CA3106751

    申请日:2019-07-16

    Abstract: The present invention relates to a process for the controlling the sodium and sulfur levels in a pulp mill, comprising the steps of: a) providing a pulp mill stream comprising sulfide and having a total alkali concentration of at least 2 Molar; b) supplying a portion of the pulp mill stream to a reactor comprising sulfide oxidizing bacteria and removing sulfide from the pulp mill streamby subjecting said stream to sulfide oxidizing bacteria in the presence of oxygen, and at a pH in the range 8 to 11, to oxidize the sulfide to elemental sulfur, c) withdrawing from the reactor a treated pulp mill stream comprising sulfur, wherein the portion of the pulp mill stream is mixed with a portion of the sulfide oxidizing bacteria present in the reactor prior to supplying the pulp mill stream to the reactor in step b).

    СПОСОБ ИЗВЛЕЧЕНИЯ СЫРОГО ТАЛЛОВОГО МАСЛА

    公开(公告)号:RU2698665C2

    公开(公告)日:2019-08-28

    申请号:RU2016150517

    申请日:2015-06-02

    Applicant: STORA ENSO OYJ

    Abstract: Изобретениеотноситсяк масложировойпромышленности. Способизвлечениясыроготалловогомаслаизмыла, содержащийэтапы: определениясоотношениямеждусодержаниемсыроготалловогомаслаи содержаниемводыв мыле, определенияколичествакислотыи воды, необходимогодляотделенияоптимальногоколичествасыроготалловогомаслаотмылав зависимостиотсодержаниясыроготалловогомаслав мыле, измерениясодержанияводыв мыле, добавленияоптимальногоколичествакислотыи водыв мыло, смешиваниядобавленнойкислотыи водыс мылом, вследствиекоторогообразуетсяподкисленноемылои отделяетсясыроеталловоемасло, иизвлеченияотделенногосыроготалловогомаслаизподкисленногомыла. Изобретениепозволяетувеличитьвыходсыроготалловогомаслаизмыла, снизитьколичествоиспользуемойкислоты, атакжекоррозиюоборудования. 9 з.п. ф-лы, 9 ил., 5 пр.

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