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1. 发明申请

WO2016072919A1 METHOD FOR OPERATING A TWO VESSEL DIGESTER SYSTEM 审中-公开
标题翻译：用于操作两个船舶信号系统的方法
公开(公告)号：WO2016072919A1
公开(公告)日：2016-05-12
申请号：PCT/SE2015/051161
申请日：2015-11-04
申请人： VALMET AB
发明人： WILGOTSON, Fredrik , HÄGGLUND, Magnus , OLSSON, Krister
IPC分类号： D21C3/24 , D21C3/02 , D21C7/14 , D21C9/02 , D21C11/00
CPC分类号： D21C3/02 , D21C3/24 , D21C7/14 , D21C9/02 , D21C11/00
摘要： The invention relates to an improved two vessel cooking system, wherein the first vessel is an atmospheric impregnation vessel and the second vessel is a pressurized digester, where hot black liquor is finally flashed off inside the impregnation vessel for steaming the cellulosic material and providing the impregnation liquor. According to the inventive method is an additional cleaner wash liquor heated and added to final cook zone in digester, while displacing a corresponding amount of hot black liquor before the final cook zone, and the heat value in the hot black liquor is recovered first in transport circulation before being used as source for flashing off steam used to steam the comminuted cellulosic material inside the impregnation liquor and final use as impregnation liquor. The invention results in a cooking process with high yield and improved delignification in final cooking phases and reduced COD content in the produced pulp without increasing steam consumption.
摘要翻译：本发明涉及一种改进的两容器烹饪系统，其中第一容器是大气浸渍容器，第二容器是加压蒸煮器，其中热黑液最终在浸渍容器内闪蒸以蒸发纤维素材料并提供浸渍酒。根据本发明的方法是将另外的清洁剂洗涤液加热并加入到蒸煮器中的最终烹饪区域，同时在最终煮区之前移出相应量的热黑液，并且热黑液中的热值首先在运输循环，然后再用作用于蒸发用于蒸发浸渍液内的粉碎的纤维素材料的蒸汽的来源，并最终用作浸渍液。本发明导致烹饪过程中产量高，并且在最终烹饪阶段改进脱木素，并且在不增加蒸汽消耗的情况下减少生产纸浆中的COD含量。

2. 发明申请

WO2018147784A1 SYSTEM AND METHOD FOR SILICA REMOVAL IN A PULPING PROCESS 审中-公开
公开(公告)号：WO2018147784A1
公开(公告)日：2018-08-16
申请号：PCT/SE2018/050072
申请日：2018-01-31
申请人： VALMET AB
发明人： WILGOTSON, Fredrik , ANTONSSON, Stefan , ERIKSSON, Lars , WERNERSSON ÖSTBERG, Bengt , OLSSON, Krister
IPC分类号： D21C1/02 , D21B1/02 , D21C1/04
摘要： The invention relates generally to a system and a method for the removal of silica contaminants from wood chips in a prehydrolysis kraft cooking pulp production process, and in particular to a system and a method in which silica is removed from a warm chip slurry containing chips that have been soaked in fluid for an extended soaking time at an elevated temperature.

3. 发明申请

WO2017086856A1 METHOD FOR HEATING CELLULOSIC MATERIAL TO FULL COOKING TEMPERATURE IN DIGESTERS 审中-公开
标题翻译：用于加热消化器中的纤维素材料以满足烹饪温度的方法
公开(公告)号：WO2017086856A1
公开(公告)日：2017-05-26
申请号：PCT/SE2016/051013
申请日：2016-10-18
申请人： VALMET AB
发明人： OLSSON, Krister
IPC分类号： D21C7/10 , D21C7/14 , D21C11/10 , D21C3/22 , D21C3/24
CPC分类号： D21C7/10 , D21C3/02 , D21C3/22 , D21C3/24 , D21C7/14 , D21C11/10
摘要： The invention relates to an improved method for generating steam in a digester plant of a chemical pulp mill. A mixture of alkaline cooking liquor and black liquor is before charge to the digester system heated in a reboiler producing black liquor steam used to heat the cellulosic feed material in digester top reaching full cooking temperature. By this method could addition of clean steam condensate to cooking liquor be avoided, and problems like lignin precipitation in black liquor heaters as well as alkaline corrosion in cooking liquor heaters may be totally avoided.
摘要翻译：本发明涉及一种用于在化学纸浆厂的消化装置中产生蒸汽的改进方法。将碱性蒸煮液和黑液的混合物加入到在再沸器中加热的蒸煮器系统中，产生用于加热蒸煮器顶部的纤维素原料达到完全蒸煮温度的黑液蒸汽。通过这种方法可以避免在蒸煮液中添加清洁的蒸汽冷凝物，并且可以完全避免黑液加热器中的木质素沉淀以及蒸煮液加热器中的碱性腐蚀等问题。

4. 发明申请

WO2017200470A1 METHOD FOR GENERATION OF CLEAN STEAM IN A CONTINUOUS DIGESTER SYSTEM 审中-公开
标题翻译：在连续消化系统中产生清洁蒸汽的方法
公开(公告)号：WO2017200470A1
公开(公告)日：2017-11-23
申请号：PCT/SE2017/050511
申请日：2017-05-16
申请人： VALMET AB
发明人： OLSSON, Krister , MIETTINEN, Jari , MIETTINEN, Keyla , LJUNGKVIST, Kjell
IPC分类号： D21C11/06 , D21C1/02
摘要： The invention relates to an improved method for generating clean steam in a digester plant of a chemical pulp mill. By feeding a steam-to-steam converter (SSC) with venting steam from a black liquor flash tank (FT) as well as venting steam from chip steaming (SV) could the volume of clean steam produced be increased by over 40-50%, and to such an extent that the volume of clean steam covers the needs for preheating of chips in the digester system also in severe operational conditions. The total consumption of clean steam from the steam net of the mill may be reduced and used for other purposes such as electricity production, which meets the requirements for converting the pulp mill to an environmental friendly pulp mill.
摘要翻译：本发明涉及一种用于在化学纸浆厂的消化装置中产生清洁蒸汽的改进方法。通过向蒸汽 - 蒸汽转化器（SSC）供应来自黑液闪蒸罐（FT）的排放蒸汽以及来自蒸馏（SV）的排放蒸汽，所产生的清洁蒸汽的体积可以增加超过40-50％并且达到这样的程度，即在苛刻的操作条件下，清洁蒸汽量也满足蒸煮器系统中的碎片预热需求。来自工厂蒸汽网的清洁蒸汽的总消耗量可能会减少，并用于其他用途，例如电力生产，这符合将纸浆厂转换为环保纸浆厂的要求。

5. 发明申请

WO2016032374A1 COST EFFICIENT KRAFT COOKING METHOD USING POLYSULFIDE COOKING LIQUOR 审中-公开
标题翻译：使用多糖烹饪液成本高效的克拉夫烹饪方法
公开(公告)号：WO2016032374A1
公开(公告)日：2016-03-03
申请号：PCT/SE2014/050975
申请日：2014-08-26
申请人： VALMET AB , ANTONSSON, Stefan , OLSSON, Krister
发明人： ANTONSSON, Stefan , OLSSON, Krister
IPC分类号： D21C1/06 , D21C3/02 , D21C3/24
CPC分类号： D21C3/022 , D21C1/06 , D21C3/24
摘要： The invention is related to a method for the preparation of kraft pulp with increased pulping yield from lignin-containing cellulosic material using polysulfide cooking liquor. In order to obtain a cost efficient system both in aspects of investment costs but also in aspects of heat economy of operating the process is most of the total charge of alkali charged as heated polysulfide liquor to an first atmospheric vessel, wherein the hot polysulfide liquor flashes off steam providing most if not all of the necessary steaming effect for the cellulose material. The polysulfide liquor is then allowed to impregnate the cellulose material at a temperature closer to cooking temperature but still so low that essentially no delignification occurs in impregnation vessel, as the H-factor in impregnation vessel is kept within 1-20.
摘要翻译：本发明涉及一种使用多硫化物蒸煮液从含木质素的纤维素材料制备牛皮纸浆的方法，该方法具有增加的含木质纤维素材料的制浆量。为了在投资成本方面获得成本有效的系统，而且在操作的热经济方面，大部分作为加热的多硫化合物加入到第一大气容器中的碱的总电荷，其中热的多硫化物液体闪烁蒸汽提供纤维素材料的大部分（如果不是全部）必要的蒸汽效果。然后允许多硫化物液体在更接近烹饪温度的温度下浸渍纤维素材料，但仍然低至浸渍容器中基本上不会发生脱木质素，因为浸渍容器中的H-因子保持在1-20℃内。

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