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METHOD OF PRODUCING CHEMICAL PULP AT A DIGESTER PLANT OF A CHEMICAL PULP MILL

机译:在化学浆厂的消化厂生产化学浆的方法

摘要

The present invention relates to a method of producing chemical pulp at a con¬ tinuous digester plant. The method comprises the following steps: a) leading a slurry formed of comminuted cellulosic fibrous material and liquid into a digester and treating the material with a treatment chemical at a temperature over 130 °C for producing treated material and black liquor; b) extracting at least one black liquor stream from the digester and leading the black liquor into an indirect heat exchange relationship with steam in a heat ex¬ changer for heating the black liquor; c) leading the heated black liquor into a flashing vessel, wherein flash steam and flashed black liquor are generated, and d) using flash steam from step c) for heating the fibrous material in the digester in step a).
机译:本发明涉及在连续的消化池中生产化学纸浆的方法。该方法包括以下步骤:a)将由粉碎的纤维素纤维材料和液体形成的浆液引入消化器中,并在高于130℃的温度下用处理化学品处理该材料以生产经处理的材料和黑液。 b)从蒸煮器中提取至少一种黑液流,并在热交换器中将黑液与蒸汽进行间接热交换,以加热黑液; c)将加热的黑液引入闪蒸容器中,在其中产生闪蒸蒸汽和闪蒸黑液,和d)使用步骤c)中的闪蒸蒸汽加热步骤a)中的消化器中的纤维材料。

著录项

  • 公开/公告号WO2017212111A1

    专利类型

  • 公开/公告日2017-12-14

    原文格式PDF

  • 申请/专利权人 ANDRITZ OY;

    申请/专利号WO2017FI50408

  • 发明设计人 KETTUNEN AUVO;ENGSTRÖM JOHAN;PIIRA JUSSI;

    申请日2017-06-01

  • 分类号D21C7/10;D21C7/14;

  • 国家 WO

  • 入库时间 2022-08-21 12:46:52

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