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    • 2. 发明申请
    • METHOD AND APPARATUS FOR PAPER STOCK MIXING
    • 纸浆混合的方法和装置
    • WO2009120965A3
    • 2010-04-22
    • PCT/US2009038569
    • 2009-03-27
    • PHILADELPHIA GEAR CORPWYCZALKOWSKI WOJCIECH RHUTCHINSON TODD MMOSELEY MARC R
    • WYCZALKOWSKI WOJCIECH RHUTCHINSON TODD MMOSELEY MARC R
    • D21H23/06
    • D21H23/06D21D5/28
    • A method of mixing paper stock, having improved outlet consistency, includes: (a) feeding liquid and feeding paper pulp into a vessel to form a mixture; (b) providing at least one counterflow impeller that is submerged in the mixture, the counterflow impeller being capable of simultaneously inducing both upward flow and downward flow; (c) rotating the counterflow impeller such that downward flow from the impeller is partially recirculated by upward flow from the impeller to form a mixing zone; (d) sensing a parameter of the mixture discharged from the vessel; and (e) controlling the feed rate of the liquid and the feed rate of the paper pulp in the feeding step (a) based on the sensing step (d). An apparatus for mixing of paper stock, having improved outlet consistency, includes a vessel for containing liquid and paper pulp, at least one counterflow impeller, and a feedback system for controlling outlet consistency.
    • 具有改进的出口稠度的纸料混合方法包括:(a)送液并将纸浆送入容器中以形成混合物; (b)提供至少一个浸没在混合物中的逆流叶轮,逆流叶轮能够同时引导向上流动和向下流动; (c)旋转逆流叶轮使得来自叶轮的向下流动部分地通过来自叶轮的向上流动再循环以形成混合区域; (d)感测从容器排出的混合物的参数; 以及(e)基于感测步骤(d),在进料步骤(a)中控制液体的进料速率和纸浆的进料速率。 具有改进的出口稠度的纸料混合装置包括容纳液体和纸浆的容器,至少一个逆流叶轮和用于控制出口稠度的反馈系统。
    • 3. 发明申请
    • PROCESS FOR PREPARING A BUFFER SOLUTION IN A PAPERMAKING PROCESS
    • 在制纸过程中制备缓冲溶液的方法
    • WO2010023224A1
    • 2010-03-04
    • PCT/EP2009/061001
    • 2009-08-26
    • LINDE AKTIENGESELLSCHAFTFÄLLDIN, AndersEMÅS, Leif
    • FÄLLDIN, AndersEMÅS, Leif
    • D21H21/14D21H17/14D21H17/64D21H17/65D21H23/06D21H23/78D21H21/10D21H23/04D21H23/08D21H23/10
    • D21H17/34D21H17/64D21H17/65D21H21/14D21H23/04D21H23/06D21H23/10D21H23/78
    • The invention describes a process for preparing a buffer solution in a papermaking process wherein the buffer solution is used for controlling the alkalinity, pH and/or hardness of a process stream, e.g. an aqueous pulp suspension, in the papermaking process. In one embodiment of the invention the basic substance, sodium hydroxide, 1 and water 2 is fed together in a mixer 3 to get a diluted sodium hydroxide containing aqueous solution. The acidic substance, carbon dioxide, 4 in the gaseous phase is introduced in the dissolver 5. In the dissolver 5 the gaseous carbon dioxide is dissolved in a re-circulated buffer solution 6. The aqueous solution containing diluted sodium hydroxide is fed to the dissolver 5 too. The re-circulated buffer solution 6, which is withdrawn from the reactor 7 and pumped by the pump 8 into the dissolver 5, is buffered by sodium bicarbonate, which is formed in the reactor 7. Thereby the pH of the re-circulated buffer solution is according to the invention below 7.5 at all the time when the basic or acidic substances where mixed together. The re-circulated flow of the buffer solution 6 prevent a local increase of the pH above 7.5 due to the introduction of the sodium hydroxide containing aqueous solution and thereby the precipitation of calcium carbonate. The pH is always below 7.5 when carbon dioxide is introduced. The sodium bicarbonate containing buffer solution is created in the reactor 7 where bicarbonate ions are formed. The resulting bicarbonate ions containing buffer solution 9 is supplied to the main process stream, the aqueous pulp suspension, for controlling the alkalinity, pH and/or hardness.
    • 本发明描述了一种在造纸方法中制备缓冲溶液的方法,其中缓冲溶液用于控制工艺流的碱度,pH和/或硬度,例如, 在造纸过程中的水性纸浆悬浮液。 在本发明的一个实施方案中,将碱性物质,氢氧化钠,1和水2一起加入混合器3中以得到含稀释氢氧化钠的水溶液。 将气相中的酸性物质二氧化碳4引入溶解器5.在溶解器5中,将气态二氧化碳溶解在再循环的缓冲溶液6中。将含有稀释的氢氧化钠的水溶液进料至溶解器 5也。 从反应器7中抽出并由泵8泵送到溶解器5中的再循环缓冲溶液6由在反应器7中形成的碳酸氢钠缓冲。由此,再循环的缓冲溶液的pH 根据本发明7.5以下所有的碱性或酸性物质混合在一起。 由于引入含氢氧化钠的水溶液,从而使碳酸钙沉淀,缓冲溶液6的再循环流动阻止pH高于7.5的局部增加。 引入二氧化碳时,pH值始终低于7.5。 含碳酸氢钠的缓冲溶液是在形成碳酸氢根离子的反应器7中产生的。 所得到的含有缓冲溶液9的碳酸氢根离子被提供给用于控制碱度,pH和/或硬度的主工艺流,水性纸浆悬浮液。
    • 8. 发明申请
    • METHOD AND APPARATUS FOR PAPER STOCK MIXING
    • 纸浆混合的方法和装置
    • WO2009120965A2
    • 2009-10-01
    • PCT/US2009/038569
    • 2009-03-27
    • PHILADELPHIA GEAR CORPORATIONWYCZALKOWSKI, Wojciech, R.HUTCHINSON, Todd, M.MOSELEY, Marc, R.
    • WYCZALKOWSKI, Wojciech, R.HUTCHINSON, Todd, M.MOSELEY, Marc, R.
    • D21F1/00D21H23/06
    • D21H23/06D21D5/28
    • A method of mixing paper stock, having improved outlet consistency, includes: (a) feeding liquid and feeding paper pulp into a vessel to form a mixture; (b) providing at least one counterflow impeller that is submerged in the mixture, the counterflow impeller being capable of simultaneously inducing both upward flow and downward flow; (c) rotating the counterflow impeller such that downward flow from the impeller is partially recirculated by upward flow from the impeller to form a mixing zone; (d) sensing a parameter of the mixture discharged from the vessel; and (e) controlling the feed rate of the liquid and the feed rate of the paper pulp in the feeding step (a) based on the sensing step (d). An apparatus for mixing of paper stock, having improved outlet consistency, includes a vessel for containing liquid and paper pulp, at least one counterflow impeller, and a feedback system for controlling outlet consistency.
    • 具有改进的出口稠度的纸料混合方法包括:(a)送液并将纸浆送入容器中以形成混合物; (b)提供至少一个浸没在混合物中的逆流叶轮,逆流叶轮能够同时引导向上流动和向下流动; (c)旋转逆流叶轮使得来自叶轮的向下流动部分地通过来自叶轮的向上流动再循环以形成混合区域; (d)感测从容器排出的混合物的参数; 以及(e)基于感测步骤(d),在进料步骤(a)中控制液体的进料速率和纸浆的进料速率。 具有改进的出口稠度的纸料混合装置包括容纳液体和纸浆的容器,至少一个逆流叶轮和用于控制出口稠度的反馈系统。
    • 10. 发明申请
    • METHOD AND APPARATUS FOR CONTROLLING THE OPERATION OF STOCK PREPARATION OF A PAPER MACHINE
    • 用于控制纸机编制操作的方法和装置
    • WO2003034170A1
    • 2003-04-24
    • PCT/FI2002/000811
    • 2002-10-18
    • METSO PAPER AUTOMATION OYHUHTELIN, Taisto
    • HUHTELIN, Taisto
    • G05D11/02
    • D21G9/0018D21F1/66D21H23/06G05D11/136
    • A method and an apparatus for controlling the operation of stock preparation of a paper machine for preparing machine stock from component stocks. The stock preparation includes a plurality of successive blending points, where the component stocks are blended with each other, a second raw material of the machine stock is added to the stock and/or the stock is diluted by blending dilution water with the stock. The flow and/or consistency of one or more stocks arriving at a blending point and/or the flow and consistency of the stock leaving a blending point and/or the concentration of the second raw material of the machine stock in the stock is adjusted in such a manner that the flow and/or consistency of the stock and/or the concentration of the second raw material of the machine stock in the stock follow target values determined for them.
    • 一种用于控制用于从部件原料制备机器原料的造纸机备料的操作的方法和装置。 原料制备包括多个连续的混合点,其中组分原料相互混合,将机器原料的第二原料加入到原料中,和/或通过将稀释水与原料混合稀释。 一个或多个股票到达混合点的流动和/或一致性和/或离开混合点的股票的流动和一致性和/或股票中机器库存的第二原料的浓度被调整为 股票的流动和/或一致性和/或股票中机器原料的第二原料的浓度遵循为它们确定的目标值的方式。