公开(公告)号：WO2008152189A3

公开(公告)日：2009-03-05

申请号：PCT/FI2008000070

申请日：2008-06-13

Applicant: ANDRITZ OY ,  VEHMAA JANNE ,  PIKKA OLAVI ,  TERVOLA PEKKA

Inventor： VEHMAA JANNE ,  PIKKA OLAVI ,  TERVOLA PEKKA

IPC: D21C11/00

CPC classification number: D21C11/0064 ,  D21C9/02 ,  D21C9/14 ,  D21C11/0021

Abstract: The invention relates to a method of treating liquid flows at a chemical pulp mill comprising at least an alkaline cooking process utilizing cooking liquor for producing pulp, brown stock treatment with essentially closed liquid cycles, a pulp bleaching plant using ECF-bleaching wherein chloride- containing effluents are generated, a chemical recovery plant comprising a causticizing plant and chemical recovery boiler plant, and effluent purification. A characteristic feature of the method is that chloride-containing effluents of the bleaching plant are introduced to the effluent purification where they are treated for decreasing the organic matter content thereof, at least 20 % of the purified effluent is led back to a pulp mill process, purified effluent is used in at least one stage of causticizing as raw water source so that the chloride-containing liquid formed in the process stage is a weak white liquor fraction that is led to the recovery boiler plant as a smelt dissolving liquid component and therefrom further via regeneration of cooking liquor, pulp cooking and pulp washing as a waste liquor component to evaporation, wherefrom the concentrated waste liquor is led for treatment into a recovery boiler process, wherein a separation process for chlorides is arranged in order to control the chloride-level of the liquor cycle.

Abstract translation: 本发明涉及一种在化学纸浆厂处理液体流动的方法，该方法至少包括利用用于生产纸浆的蒸煮液，基本上封闭的液体循环的褐色处理的碱性烹饪方法，使用ECF漂白的纸浆漂白设备，其中含氯化物 产生污水，包括苛化厂和化学回收锅炉厂的化学回收设备，以及污水净化。 该方法的特征在于将漂白设备的含氯化物的废水引入流出物净化处理，以减少其有机物含量，将至少20％的纯化流出物引回到纸浆厂过程 纯化出的流出液用于至少一个苛化阶段的原水源，使得在工艺阶段中形成的含氯化物液体是弱的白液馏分，作为熔融溶解液体成分导入回收锅炉设备 进一步通过烹饪液的再生，纸浆蒸煮和作为废液组分的纸浆清洗进行蒸发，由此将浓缩的废液引入用于处理的回收锅炉方法中，其中布置氯化物的分离过程以控制氯化物 - 白酒循环水平。

公开(公告)号：WO2008152187A2

公开(公告)日：2008-12-18

申请号：PCT/FI2008000068

申请日：2008-06-13

Applicant: ANDRITZ OY ,  VEHMAA JANNE ,  PIKKA OLAVI ,  TERVOLA PEKKA

Inventor： VEHMAA JANNE ,  PIKKA OLAVI ,  TERVOLA PEKKA

IPC: D21C9/14

CPC classification number: D21C11/0028 ,  D21C3/02 ,  D21C9/02 ,  D21C9/10 ,  D21C9/12 ,  D21C9/14 ,  D21C11/0021

Abstract: The present invention relates to a method for treating liquid flows at a chemical pulp mill comprising at least an alkaline cooking process for producing pulp, brown stock treatment with essentially closed liquid cycles, a pulp bleaching plant using ECF-bleaching, a chemical recovery plant comprising a chemical recovery boiler, and effluent purification. Chloride-containing bleaching plant effluents are led to the effluent purification, where they are treated in order to decrease the organic matter content thereof. At least 20 % of the purified effluent is returned to a pulp mill process and purified effluent is used in a last washing stage included in brown stock treatment. In the brown stock treatment the liquid flow is passed counter-currently to evaporation, wherefrom it is led for treatment to a recovery boiler process, wherein a separation process for chlorides is arranged for controlling the chloride level of the liquor cycle.

Abstract translation: 本发明涉及一种在化学纸浆厂处理液体流动的方法，该方法至少包括用于生产纸浆的碱性烹饪方法，基本上封闭的液体循环的褐色处理，使用ECF漂白的纸浆漂白设备，包括 化学回收锅炉和污水净化。 将含氯化物漂白设备的废水导入废水净化处理处理，以降低其有机物含量。 将至少20％的纯化流出物返回到纸浆厂工艺，并且纯化的流出物用于棕色原料处理中包括的最后洗涤阶段。 在棕色储备处理中，液体流动相对于蒸发通过，从那里被引导用于处理回收锅炉过程，其中布置氯化物的分离过程以控制液体循环的氯化物水平。

公开(公告)号：WO2008152185A2

公开(公告)日：2008-12-18

申请号：PCT/FI2008000063

申请日：2008-06-12

Applicant: ANDRITZ OY ,  VEHMAA JANNE ,  PIKKA OLAVI ,  TERVOLA PEKKA

Inventor： VEHMAA JANNE ,  PIKKA OLAVI ,  TERVOLA PEKKA

IPC: D21C9/14

CPC classification number: D21C11/0028 ,  D21C3/02 ,  D21C9/02 ,  D21C9/14 ,  D21C9/147 ,  D21C9/153 ,  D21C9/166 ,  D21C9/18

Abstract: The present invention relates to a method in connection with washing of pulp at a chemical pulp mill comprising at least an alkaline cooking process utilizing cooking liquor for producing pulp, brown stock treatment with essentially closed liquid cycles, in which the last washing device is a washing device based on pressing of pulp, a press or a washing press, a pulp bleaching plant using ECF- bleaching, wherein chloride-containing effluents are formed, a chemical recovery plant and effluent purification. An object of the present invention is to offer a method for utilizing liquid flows generated at a chemical pulp mill in an advantageous object and for efficiently circulating them without disturbing the main process and minimizing the emissions from the mill. A characteristic feature of the invention is that purified effluent in the amount of at least 1 m3/adt pulp is introduced into the dilution after the press or washing press, whereby the effluent is passed from the dilution into the first process stage of the bleaching.

Abstract translation: 本发明涉及一种在化学纸浆磨机中洗涤纸浆的方法，该方法至少包括利用用于生产纸浆的蒸煮液的碱性烹饪方法，具有基本上封闭的液体循环的棕色原料处理，其中最后的洗涤装置是洗涤 基于压浆，压力机或洗衣机的设备，使用ECF漂白的纸浆漂白设备，其中形成含氯化物的流出物，化学回收设备和废水净化。 本发明的目的是提供一种利用在化学纸浆厂生产的液体流在有利的对象中并有效地循环它们的方法，而不会干扰主工艺并使得磨机的排放最小化。 本发明的特征在于，在压榨或洗涤压榨机之后，将至少1m 3 / adt纸浆量的净化流出物引入稀释液中，由此将流出物从稀释液送入漂白的第一个处理阶段。

公开(公告)号：WO2008152186A3

公开(公告)日：2009-02-26

申请号：PCT/FI2008000065

申请日：2008-06-12

Applicant: ANDRITZ OY ,  VEHMAA JANNE ,  PIKKA OLAVI ,  TERVOLA PEKKA

Inventor： VEHMAA JANNE ,  PIKKA OLAVI ,  TERVOLA PEKKA

IPC: D21C9/14

CPC classification number: D21C3/02 ,  D21C9/02 ,  D21C9/14

Abstract: The present invention relates to a method for treating liquid flows at a chemical pulp mill comprising at least an alkaline cooking process for producing pulp, treatment of brown stock generated in the cooking, a bleaching plant using ECF-bleaching, in which chloride-containing effluents are formed, an effluent purification plant for treating bleaching plant effluents and other effluents generated at the mill. At least a portion of the effluents is returned after the purification to the pulp production line as source of process water. It is essential that more than one treatment line is arranged at the effluent purification plant for the mill effluents and that effluents with different chemical compositions are purified in separate treatment lines so that the quality and amount of purified water from each treatment line is suitable for use in a stage or stages of the production process, whereto purified effluent is returned.

Abstract translation: 本发明涉及一种在化学纸浆厂处理液体流动的方法，该方法至少包括用于生产纸浆的碱性烹饪方法，处理烹饪中产生的棕色原料，使用ECF漂白的漂白设备，其中含氯化物的流出物 形成，用于处理在工厂产生的漂白工厂废水和其它废水的污水净化设备。 净化后至少一部分废水作为工艺用水来源返回到纸浆生产线。 重要的是，在污水净化设备处设置多于一个处理管线用于研磨废水，并且具有不同化学成分的流出物在单独的处理管线中纯化，使得来自每个处理管线的净化水的质量和量适合于使用 在生产过程的阶段或阶段，纯化的流出物返回。

公开(公告)号：WO2008152188A2

公开(公告)日：2008-12-18

申请号：PCT/FI2008000069

申请日：2008-06-13

Applicant: ANDRITZ OY ,  VEHMAA JANNE ,  PIKKA OLAVI ,  TERVOLA PEKKA

Inventor： VEHMAA JANNE ,  PIKKA OLAVI ,  TERVOLA PEKKA

IPC: D21C9/14

CPC classification number: D21C11/0021 ,  D21C9/02 ,  D21C9/14 ,  D21C11/10

Abstract: The present invention relates to a method for treating pulp at a chemical pulping plant comprising at least a pulp bleaching plant using elementary chlorine free bleaching and having at least one chlorine dioxide stage, and wherein chloride-containing effluents are formed, a chemical recovery plant comprising a black liquor evaporation plant and a chemical recovery boiler plant, and effluent purification. An object of the present invention is to offer a method for utilizing liquid flows generated at a chemical pulp mill in an advantageous objet and for efficiently circulating them and minimizing the emissions from the mill. A characteristic feature of the method is that chloride-containing bleaching plant effluents are led to effluent purification, where they are treated in order to decrease the organic matter content thereof, that purified effluent is led back to a chemical pulp mill process, so that at least 20 % of the liquid used for brown stock washing is purified effluent and that condensates originating from the evaporation plant are used in the amount of at least 1 m3/adt pulp as washing or dilution water of the bleaching for reducing the total amount of effluent, and that a separation process for chlorides is arranged at the chemical recovery boiler plant for decreasing the chloride level of the chemical cycle.

Abstract translation: 本发明涉及一种在化学制浆设备处理纸浆的方法，该方法至少包括使用无氯漂白漂白并具有至少一个二氧化氯阶段的纸浆漂白设备，并且其中形成含氯化物的流出物，化学回收设备包括 黑液蒸发厂和化学回收锅炉厂，以及污水净化。 本发明的目的是提供一种利用在化学纸浆厂产生的液体流在有利的对象中并有效地循环它们并最小化来自研磨机的排放物的方法。 该方法的一个特点是将含氯化物漂白设备的废水导入废水净化处理，以便将污水处理进行处理，以降低其有机物含量，将净化后的废水引导回化学纸浆厂处理， 用于棕色洗涤的液体的最少20％是纯化的流出物，来自蒸发设备的冷凝物的用量至少为1m 3 / adt纸浆，作为用于减少流出物总量的漂白剂的洗涤或稀释水 并且在化学回收锅炉设备处设置氯化物的分离过程以降低化学循环的氯化物水平。

公开(公告)号：WO0043589B1

公开(公告)日：2000-10-12

申请号：PCT/FI0000045

申请日：2000-01-20

Applicant: ANDRITZ AHLSTROM OY ,  PIKKA OLAVI ,  TERVOLA PEKKA ,  VEHMAA JANNE

Inventor： PIKKA OLAVI ,  TERVOLA PEKKA ,  VEHMAA JANNE

IPC: D21C9/02 ,  D21C11/00 ,  D21C9/10

CPC classification number: D21C9/02 ,  D21C11/0028

Abstract: The present invention relates to a method of treating pulp. The method according to the invention is particularly well suited for intensifying the washing of fiber suspensions in the wood processing industry in cases where liquid recycled from later washing stages is used as washing liquid. According to a preferred embodiment of the invention part of the washing liquid to be fed to a washer is separated to form a separate flow, which is divided into a cleaner and a fouler fraction that are returned to appropriate locations of the process.

Abstract translation: 本发明涉及一种处理纸浆的方法。 根据本发明的方法特别适用于在从后期洗涤阶段循环的液体用作洗涤液体的情况下加强木材加工工业中纤维悬浮液的洗涤。 根据本发明的优选实施方案，将要供给到洗涤器的洗涤液的一部分被分离以形成单独的流，其被分成清洁剂和污垢级分，返回到该方法的适当位置。