公开(公告)号：WO2012115812A1

公开(公告)日：2012-08-30

申请号：PCT/US2012/024848

申请日：2012-02-13

Applicant: ANDRITZ INC. ,  LEAVITT, Aaron T. ,  PAKARINEN, Jussi ,  GREENWOOD, Brian F.

Inventor： LEAVITT, Aaron T. ,  PAKARINEN, Jussi ,  GREENWOOD, Brian F.

IPC: D21C1/04

CPC classification number: D21C1/04 ,  D21C3/02 ,  D21C3/24

Abstract: A pulp cooking system including: a cellulosic material feed system, a pre-hydrolysis reactor vessel and a Kraft cooking reactor vessel. The feed material system includes a steaming chip bin (10) and a high pressure transfer device (12). The pre-hydrolysis reactor vessel maintains the feed material in a mildly acidic condition and allows hydrolysate to be extracted through screens (60) below a hydrolysis zone (56) in the vessel. A wash zone (66) is below the screens and allows wash liquid to flow through the feed material in a cross-current direction. The wash liquid and hydrolysate removed from the feed material is extracted from the wash zone through the screens (60). The feed material is maintained in a mildly acidic condition through the pre-hydrolysis reactor vessel until the material enters the Kraft cooking vessel where the feed material is treated with alkaline cooking liquors.

Abstract translation: 一种纸浆蒸煮系统，包括：纤维素材料进料系统，预水解反应器容器和硫酸盐蒸煮反应器容器。 进料系统包括蒸汽屑仓（10）和高压输送装置（12）。 预水解反应器容器将进料保持在温和酸性状态，并允许水解物通过容器中的水解区（56）下方的筛网（60）提取。 洗涤区域（66）位于筛网下方，并允许洗涤液体在横向电流方向上流过进料。 从进料中除去的洗涤液和水解物通过筛网（60）从洗涤区域提取。 饲料通过预水解反应器容器保持在温和的酸性状态，直到材料进入硫酸盐蒸煮容器，其中饲料用碱性烹饪液处理。

公开(公告)号：WO2011066189A1

公开(公告)日：2011-06-03

申请号：PCT/US2010/057417

申请日：2010-11-19

Applicant: ANDRITZ INC. ,  ENGSTROM, Johan ,  PIIRA, Jussi ,  VEHMAA, Janne ,  TERVOLA, Veli-Pekka ,  LEAVITT, Aaron

Inventor： ENGSTROM, Johan ,  PIIRA, Jussi ,  VEHMAA, Janne ,  TERVOLA, Veli-Pekka ,  LEAVITT, Aaron

IPC: D21C3/02 ,  D21C7/00

CPC classification number: D21C7/00 ,  D21C3/02

Abstract: A method to cook thin chips in a continuous digester vessel including: introducing thin chips having a thickness of no more than 6mm, into a chip bin; adding white (cooking) liquor to the chip bin or to a chip transport passage extending from the chip bin to an upper inlet of the continuous digester vessel; injecting medium pressure steam or another heated fluid to an upper region of the digester vessel to elevate a cooking temperature of the chips in the vessel to at least 130 degrees Celsius; cooking the chips in the vessel as the chips flow downward through the vessel without substantial extraction or introduction of liquor in the cooking section of the vessel; injecting wash liquid to a lower region of the vessel; extracting at least wash liquid through a wash liquid extraction screen in the lower region of the vessel and above the injection of the wash liquid, and discharging the cooked thin chips from the lower region of the vessel.

Abstract translation: 一种在连续蒸煮容器中制造薄片的方法，包括：将厚度不大于6mm的薄片引入碎片仓; 将白色（烹饪）液体加入到切屑仓或从碎屑仓延伸到连续蒸煮器容器的上部入口的碎屑输送通道; 将中压蒸汽或另一加热流体注入到所述蒸煮器容器的上部区域以将所述容器中的所述碎屑的烹饪温度升高至至少130摄氏度; 当芯片向下流过容器时，在容器的烹饪部分中没有大量提取或引入液体的情况下，在容器中烹饪碎屑; 将洗涤液注射到所述容器的下部区域; 至少通过在容器的下部区域中的洗涤液体提取筛和洗涤液的注射之上提取清洗液体，并且从容器的下部区域排出煮熟的薄片。