公开(公告)号：EP3152359B1

公开(公告)日：2018-12-26

申请号：EP15730208.4

申请日：2015-05-26

申请人： Andritz Oy

发明人： MCKEOUGH, Paterson

IPC分类号： D21C11/00 ,  C04B2/10

CPC分类号： D21C11/0007 ,  C04B2/108 ,  D21C11/00 ,  D21C11/0021 ,  D21C11/0035 ,  D21C11/0042 ,  Y02P40/44

摘要： A method of utilizing lignin-containing material separated from spent kraft pulping liquor including: acidifying the liquor to a pH not less than seven thereby precipitating solid particles, separating precipitated solid particles from the accompanying liquid, and subjecting the separated precipitated solid particles to a washing process in which: the separated precipitated solid particles are washed with an aqueous medium or aqueous media in one or more washing steps, in each one of the washing steps, the aqueous washing medium contains, in a dissolved form, significant amounts of one or more added sodium salts, and a combined concentration of the added sodium salts in the washing medium in each of the washing step exceeds three percent by weight; and utilizing as fuel in a lime kiln at least part of the washed lignin-containing material is utilized as fuel in a lime kiln of a pulp mill.

公开(公告)号：EP3126569B1

公开(公告)日：2018-05-02

申请号：EP15718249.4

申请日：2015-03-27

申请人： Andritz Oy

发明人： MCKEOUGH, Paterson

IPC分类号： D21C11/00

CPC分类号： D21C11/0007 ,  D21C9/02 ,  D21C11/0021 ,  D21C11/0064 ,  Y02P40/44

摘要： A method for handling spent wash solution produced in the washing of lignin that has been precipitated and then separated from spent alkaline pulping liquor. At least part of the spent wash solution is introduced into the chemical recovery cycle at a location in that part of the cycle which starts at, and includes, the smelt dissolving stage and ends at, and includes, the pulping stage. In preferred embodiments, input of other water and/or aqueous solution into the chemical recovery cycle after the recovery boiler is adjusted so that, as a consequence of the introduction of the spent wash solution, the amount of water in the white liquor going to the pulping line is not significantly increased. Among others, two preferred locations for the introduction of the spent wash solution are (1) the smelt dissolver and (2) the location where unwashed lime mud is diluted.

公开(公告)号：EP3152359A1

公开(公告)日：2017-04-12

申请号：EP15730208.4

申请日：2015-05-26

申请人： Andritz Oy

发明人： MCKEOUGH, Paterson

IPC分类号： D21C11/00

CPC分类号： D21C11/0007 ,  C04B2/108 ,  D21C11/00 ,  D21C11/0021 ,  D21C11/0035 ,  D21C11/0042 ,  Y02P40/44

摘要： A method of utilizing lignin-containing material separated from spent kraft pulping liquor including: acidifying the liquor to a pH not less than seven thereby precipitating solid particles, separating precipitated solid particles from the accompanying liquid, and subjecting the separated precipitated solid particles to a washing process in which: the separated precipitated solid particles are washed with an aqueous medium or aqueous media in one or more washing steps, in each one of the washing steps, the aqueous washing medium contains, in a dissolved form, significant amounts of one or more added sodium salts, and a combined concentration of the added sodium salts in the washing medium in each of the washing step exceeds three percent by weight; and utilizing as fuel in a lime kiln at least part of the washed lignin-containing material is utilized as fuel in a lime kiln of a pulp mill.

摘要翻译： 利用从分离出的含木质素的材料的方法，花费力纸浆液包括：酸化液的pH不小于7个，从而沉淀固体颗粒，从所附的液体中分离沉淀出的固体颗粒，并且对分离沉淀的固体颗粒进行洗涤 方法，其中：所分离的沉淀固体颗粒用在一个或多个洗涤步骤wässrige介质或wässrige媒体，在洗涤步骤的每一个，所述wässrige洗涤介质包含，以溶解的形状，一个或多个的显著量 加入钠盐，和在每个洗涤步骤中的洗涤介质中的添加磺酸钠盐的组合浓度超过按重量计百分之三; 利用和在石灰窑燃料的洗涤含木质素的材料的至少一部分被用作在一个纸浆厂的石灰窑的燃料。

公开(公告)号：EP3126569A1

公开(公告)日：2017-02-08

申请号：EP15718249.4

申请日：2015-03-27

申请人： Andritz Oy

发明人： MCKEOUGH, Paterson

IPC分类号： D21C11/00

CPC分类号： D21C11/0007 ,  D21C9/02 ,  D21C11/0021 ,  D21C11/0064 ,  Y02P40/44

摘要： A method for handling spent wash solution produced in the washing of lignin that has been precipitated and then separated from spent alkaline pulping liquor. At least part of the spent wash solution is introduced into the chemical recovery cycle at a location in that part of the cycle which starts at, and includes, the smelt dissolving stage and ends at, and includes, the pulping stage. In preferred embodiments, input of other water and/or aqueous solution into the chemical recovery cycle after the recovery boiler is adjusted so that, as a consequence of the introduction of the spent wash solution, the amount of water in the white liquor going to the pulping line is not significantly increased. Among others, two preferred locations for the introduction of the spent wash solution are (1) the smelt dissolver and (2) the location where unwashed lime mud is diluted.

摘要翻译： 本发明的主题是处理已经沉淀出来的然后与废碱性浆液分离的木质素洗涤中产生的废洗涤溶液的新方法。 至少部分废洗液被引入化学回收循环中，该循环在该部分循环中开始并包括熔体溶解阶段，并在制浆阶段结束并包括制浆阶段。 在优选的实施方案中，调节回收锅炉后将其它水和/或水溶液输入到化学回收循环中，使得作为废洗涤溶液的引入的结果，白液中的水量 制浆线不显着增加。 其中，用于引入废洗涤溶液的两个优选位置是（1）熔融溶解器和（2）未洗涤的石灰泥被稀释的位置。