公开(公告)号：US5183535A

公开(公告)日：1993-02-02

申请号：US794795

申请日：1991-11-19

申请人： Panu Tikka

发明人： Panu Tikka

IPC分类号： D21C1/06 ,  D21C3/02 ,  D21C11/00

CPC分类号： D21C1/06 ,  D21C11/0021 ,  D21C3/02

摘要： Processes for prepariing kraft pulp are disclosed. The processes include pretreating cellulosic material or chips with spent cooking liquor at the temperature of about 20.degree. to 100.degree. C., followed by heating the impregnated chips at the temperature of from about 120.degree. to 180.degree. C., followed by digestion of the lignin with white liquor, which is facilitated by using this pretreatment process.

摘要翻译： 公开了制备牛皮纸浆的方法。 这些方法包括在约20℃至100℃的温度下用废蒸煮液预处理纤维素材料或碎屑，然后在约120℃至180℃的温度下加热浸渍的芯片，然后消化 通过使用该预处理方法促进了白液的木质素。

公开(公告)号：US20050173082A1

公开(公告)日：2005-08-11

申请号：US11029732

申请日：2005-01-05

申请人： Rolf De Vos ,  Panu Tikka

发明人： Rolf De Vos ,  Panu Tikka

IPC分类号： D21C9/153

CPC分类号： D21C9/153

摘要： Methods are disclosed for bleaching medium consistency cellulose pulp including generating a stream of ozone-containing gas having an ozone concentration of at least 10% by weight and radially injecting the stream of ozone-containing gas into a stream of cellulose pulp flowing through a reactor so as to provide a stream of bleached cellulose pulp. A low to medium intensity mixer operating at no more than 800 rpm may be used, downstream from the injection site.

摘要翻译： 公开了用于漂白介质稠度纤维素纸浆的方法，包括产生臭氧浓度为至少10重量％的含臭氧气体流，并将含臭氧气体流径向喷射到流过反应器的纤维素浆料流中 以提供漂白的纤维素纸浆流。 可以在注射部位的下游使用不超过800rpm的低至中等强度的混合器。

公开(公告)号：US4889593A

公开(公告)日：1989-12-26

申请号：US149936

申请日：1988-01-26

申请人： Panu Tikka ,  Nils E. Virkola

发明人： Panu Tikka ,  Nils E. Virkola

IPC分类号： D21C7/12 ,  G01N21/33 ,  G01N30/02 ,  G01N33/00

CPC分类号： D21C7/12 ,  G01N21/33 ,  G01N30/02 ,  G01N33/0042 ,  Y10T436/25125

摘要： A method of rapid determination of the concentrations of the total sulphur dioxide and the lignosulphonate present in sulphite pulping process liquors. The lignosulphonates are separated from compounds which form the total sulphur dioxide by means of an ion exclusion column, whereby the filling material of the column consists of a cation exchange resin. The concentration measurements of the sulphur dioxide and the lignosulphonate are carried out from the liquor flow coming out from the separation column by means of UV-method at the wave length of 280 nm. The invention also relates to a method of controlling the sulphite pulping process by determining the total sulphite dioxide concentration in the pulping liquor.

摘要翻译： 快速测定亚硫酸盐制浆工艺液中存在的总二氧化硫和木质素磺酸盐的浓度的方法。 木质素磺酸盐与通过离子排除柱形成总二氧化硫的化合物分离，由此柱的填充材料由阳离子交换树脂组成。 二氧化硫和木质素磺酸盐的浓度测量是通过UV法在280nm波长下从分离塔出来的液体流进行的。 本发明还涉及一种通过测定制浆液中的总亚硫酸盐二氧化物浓度来控制亚硫酸盐制浆过程的方法。

公开(公告)号：US09200406B2

公开(公告)日：2015-12-01

申请号：US11886702

申请日：2006-02-10

申请人： Eric Enqvist ,  Panu Tikka ,  Leopold Heinrich ,  Matti Luhtanen

发明人： Eric Enqvist ,  Panu Tikka ,  Leopold Heinrich ,  Matti Luhtanen

IPC分类号： D21C3/20 ,  D21C1/00 ,  D21C3/22

CPC分类号： D21C3/20 ,  D21C1/00 ,  D21C3/222

摘要： The invention relates to an improved process to break down lignin macromolecules and liberating cellulose fibers in lignocellulosic material using delignifying reactants with a gaseous organic agent as a heating and reaction-accelerating media. Lignocellulosic material is first impregnated with reactant chemicals, e.g. commonly used agents such as sodium hydroxide and sodium sulfide. Subsequently, the energy required for the delignification reactions is provided through heating with a gaseous organic agent such as methanol or ethanol, condensing and releasing energy to the solid lignocellulosic material. The temperature during the heating step with a gaseous organic agent is higher than the temperature during the impregnation step.

摘要翻译： 本发明涉及一种改进的木质素大分子分解方法和使用脱气反应物与气态有机试剂作为加热和反应加速介质在木质纤维素材料中释放纤维素纤维。 木质纤维素材料首先用反应物化学品浸渍，例如 常用的试剂如氢氧化钠和硫化钠。 随后，通过用气态有机试剂如甲醇或乙醇加热提供脱木质反应所需的能量，将能量冷凝并释放到固体木质纤维素材料上。 使用气态有机试剂的加热步骤期间的温度高于浸渍步骤期间的温度。

公开(公告)号：US08262854B2

公开(公告)日：2012-09-11

申请号：US12223605

申请日：2007-01-26

申请人： Päivi Uusitalo ,  Panu Tikka

发明人： Päivi Uusitalo ,  Panu Tikka

IPC分类号： D21C3/02 ,  D21C3/04

CPC分类号： D21C11/0007 ,  D21C1/02 ,  D21C1/04

摘要： An improved method for treating lignocellulosic material, including a prehydrolysis-mass transfer process, which produces a concentrated hydrolysate volume during the time required for the hydrolysis itself. The improved process comprises the heating of the digester and chip content by direct steam to the required hydrolysis temperature, starting a flow of hot, stored hydrolysate to the top of the chip bed in order to create a trickle-bed type down-flow of hydrolysate, collecting a first fraction of the trickled-down hydrolysate as a product fraction, adding extraction liquid and continuing the trickle flow to collect a second hydrolysate fraction, which will be discharged from the digester to a hot hydrolysate storage tank to be used as the first trickle flow liquid in the next batch.

摘要翻译： 一种用于处理木质纤维素材料的改进方法，包括预水解 - 质量转移方法，其在水解本身所需的时间内产生浓缩的水解产物体积。 改进的方法包括通过直接蒸汽将消化器和芯片含量加热至所需的水解温度，开始将热的储存的水解产物流到芯片床的顶部，以产生水解产物的滴流床型下流 收集滴液水解产物的第一部分作为产物级分，加入萃取液并继续滴流以收集第二水解产物馏分，该第二水解产物馏分将从蒸煮器排出至热水解储存罐，以用作第一级 下一批流滴液。

公开(公告)号：US20090277596A1

公开(公告)日：2009-11-12

申请号：US12295357

申请日：2007-03-27

申请人： Aki Vilpponen ,  Panu Tikka

发明人： Aki Vilpponen ,  Panu Tikka

IPC分类号： D21C9/02

CPC分类号： D21C9/144 ,  D21C9/1042

摘要： A process for the bleaching of chemical pulp, comprising a first chlorine dioxide treatment (D) of the initial bleaching and chelation (Q) to be carried out in connection therewith, forming together a DQ treatment. The process is characterized in that the chelation is carried out at the pH of from 2 to 7, and it is followed by an alkalizing stage (N) of the pulp, without intermediate washing for raising the pH of the pulp to above 7 and at most to 12 prior to a following stage which is a washing step.

摘要翻译： 一种漂白化学纸浆的方法，包括与之结合进行的初始漂白和螯合（Q）的第一次二氧化氯处理（D），形成DQ处理。 该方法的特征在于螯合在2至7的pH下进行，然后是纸浆的碱化阶段（N），而不进行中间洗涤以将纸浆的pH提高到7以上 在洗涤步骤的后续阶段之前最多至12次。

公开(公告)号：US5589033A

公开(公告)日：1996-12-31

申请号：US242617

申请日：1994-05-13

申请人： Panu Tikka ,  Kari Kovasin

发明人： Panu Tikka ,  Kari Kovasin

IPC分类号： D21C1/00 ,  D21C3/02 ,  D21C3/26 ,  D21C1/06

CPC分类号： D21C3/022 ,  D21C1/00 ,  D21C3/26

摘要： Processes for preparing pulp from lignin-containing cellulosic material are disclosed including a prehydrolysis step followed by neutralizing hydrolysate and the prehydrolyzed cellulosic material in the reactor with alkaline neutralizing liquor, removing the neutralized hydrolysate from the reactor and delignifying the neutralized prehydrolyzed cellulosic material with alkaline cooking liquor containing sodium sulfide and sodium hydroxide.

摘要翻译： 公开了从含木素的纤维素材料制备纸浆的方法，其中包括预水解步骤，然后用碱中和液中和水解产物和反应器中的预水解纤维素材料，从反应器中除去中和的水解产物，并用碱性蒸煮将中和的预水解纤维素材料脱木质 含硫化钠和氢氧化钠的液体。

公开(公告)号：US20090242152A1

公开(公告)日：2009-10-01

申请号：US12295378

申请日：2007-03-27

申请人： Aki Vilpponen ,  Panu Tikka

发明人： Aki Vilpponen ,  Panu Tikka

IPC分类号： D21C9/02

CPC分类号： D21C9/144 ,  D21C9/1042 ,  D21C9/147 ,  D21C9/163

摘要： A process for the bleaching of chemical pulp, wherein the initial bleaching of the pulp includes a first chlorine dioxide treatment (D0) and a following alkaline treatment with oxygen and hydrogen peroxide (EOP), which stages are separated from each other with a washing stage, and a treatment of the pulp to reduce the content of transition metals of the pulp prior to the peroxide treatment. The process is characterized in that alkali is added to the pulp after addition of chlorine dioxide in the D0 stage to adjust the pH of the pulp to neutral or basic (N stage) prior to the washing stage following the chlorine dioxide stage, whereby the initial bleaching includes the sequence D0N EOP.

摘要翻译： 用于漂白化学纸浆的方法，其中纸浆的初始漂白包括第一次二氧化氯处理（D0）和用氧和过氧化氢（EOP）进行的以下碱处理，该阶段在洗涤阶段彼此分离 ，以及处理纸浆以在过氧化物处理之前降低纸浆的过渡金属含量。 该方法的特征在于，在D0阶段加入二氧化氯后，将碱加入到纸浆中，以在二氧化氯阶段之后的洗涤阶段将纸浆的pH调节至中性或碱性（N阶段），由此初始 漂白包括序列D0N EOP。

公开(公告)号：US20090218055A1

公开(公告)日：2009-09-03

申请号：US12223605

申请日：2007-01-26

申请人： Paivi Uusitalo ,  Panu Tikka

发明人： Paivi Uusitalo ,  Panu Tikka

IPC分类号： D21C9/02 ,  D21C1/02

CPC分类号： D21C11/0007 ,  D21C1/02 ,  D21C1/04

摘要： An improved method for treating lignocellulosic material, including a prehydrolysis-mass transfer process, which produces a concentrated hydrolysate volume during the time required for the hydrolysis itself. The improved process comprises the heating of the digester and chip content by direct steam to the required hydrolysis temperature, starting a flow of hot, stored hydrolysate to the top of the chip bed in order to create a trickle-bed type down-flow of hydrolysate, collecting a first fraction of the trickled-down hydrolysate as a product fraction, adding extraction liquid and continuing the trickle flow to collect a second hydrolysate fraction, which will be discharged from the digester to a hot hydrolysate storage tank to be used as the first trickle flow liquid in the next batch.

摘要翻译： 一种用于处理木质纤维素材料的改进方法，包括预水解 - 质量转移方法，其在水解本身所需的时间内产生浓缩的水解产物体积。 改进的方法包括通过直接蒸汽将消化器和芯片含量加热至所需的水解温度，开始将热的储存的水解产物流到芯片床的顶部，以产生水解产物的滴流床型下流 收集滴液水解产物的第一部分作为产物级分，加入萃取液并继续滴流以收集第二水解产物馏分，该第二水解产物馏分将从蒸煮器排出至热水解储存罐，以用作第一级 下一批流滴液。

公开(公告)号：US20090014138A1

公开(公告)日：2009-01-15

申请号：US11886702

申请日：2006-02-10

申请人： Eric Enqvist ,  Panu Tikka ,  Leopold Heinrich ,  Matti Luhtanen

发明人： Eric Enqvist ,  Panu Tikka ,  Leopold Heinrich ,  Matti Luhtanen

IPC分类号： D21C3/20 ,  D21C3/04

CPC分类号： D21C3/20 ,  D21C1/00 ,  D21C3/222

摘要： The invention relates to an improved process to break down lignin macromolecules and liberating cellulose fibers in lignocellulosic material using delignifying reactants with a gaseous organic agent as a heating and reaction-accelerating media. Lignocellulosic material is first impregnated with reactant chemicals, e.g. commonly used agents such as sodium hydroxide and sodium sulfide. Subsequently, the energy required for the delignification reactions is provided through heating with a gaseous organic agent such as methanol or ethanol, condensing and releasing energy to the solid lignocellulosic material. The temperature during the heating step with a gaseous organic agent is higher than the temperature during the impregnation step.

摘要翻译： 本发明涉及一种改进的木质素大分子分解方法和使用脱气反应物与气态有机试剂作为加热和反应加速介质在木质纤维素材料中释放纤维素纤维。 木质纤维素材料首先用反应物化学品浸渍，例如 常用的试剂如氢氧化钠和硫化钠。 随后，通过用气态有机试剂如甲醇或乙醇加热提供脱木质反应所需的能量，将能量冷凝并释放到固体木质纤维素材料上。 使用气态有机试剂的加热步骤期间的温度高于浸渍步骤期间的温度。