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    • 1. 发明申请
    • METHOD AND APPARATUS TO PRODUCE PULP USING PRE-HYDROLYSIS AND KRAFT COOKING
    • 使用预水解和克拉夫烹饪生产纸浆的方法和装置
    • US20120211183A1
    • 2012-08-23
    • US13363680
    • 2012-02-01
    • Aaron LEAVITTJussi PakarinenBrian F. Greenwood
    • Aaron LEAVITTJussi PakarinenBrian F. Greenwood
    • D21C3/00D21C7/10
    • D21C1/04D21C3/02D21C3/24
    • 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 and a high pressure transfer device. The pre-hydrolysis reactor vessel maintains the feed material in a mildly acidic condition and allows hydrolysate to be extracted through screens below a hydrolysis zone in the vessel. A wash zone 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 through the screens. 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.
    • 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和高压输送装置。 预水解反应器容器将进料保持在温和的酸性状态,并允许水解物通过容器中水解区下方的筛网提取。 洗涤区位于筛网的下面,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子提取。 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。
    • 2. 发明授权
    • Method and apparatus to produce pulp using pre-hydrolysis and Kraft cooking
    • 使用预水解和牛皮纸蒸煮来生产纸浆的方法和设备
    • US09371612B2
    • 2016-06-21
    • US13363680
    • 2012-02-01
    • Aaron LeavittJussi PakarinenBrian F. Greenwood
    • Aaron LeavittJussi PakarinenBrian F. Greenwood
    • D21C1/04D21C3/02D21C3/24
    • D21C1/04D21C3/02D21C3/24
    • 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 and a high pressure transfer device. The pre-hydrolysis reactor vessel maintains the feed material in a mildly acidic condition and allows hydrolysate to be extracted through screens below a hydrolysis zone in the vessel. A wash zone 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 through the screens. 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.
    • 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和高压输送装置。 预水解反应器容器将进料保持在温和的酸性状态,并允许水解物通过容器中水解区下方的筛网提取。 洗涤区位于筛网的下面,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子提取。 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。