公开(公告)号：US20230081586A1

公开(公告)日：2023-03-16

申请号：US17801124

申请日：2021-03-03

Applicant: Andritz Inc.

Inventor： Keith Vogel ,  Tyson B. Hunt ,  Blake Whiteside ,  Carlton L. Luhrmann ,  Scott A. Pope ,  Aaron Leavitt

IPC: D21C3/22 ,  D21C7/00

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, that adjust a high-pressure feeder of a feed system used in pulp production based on the fluid leakage through a low-pressure outlet of a high-pressure feeder. Methods can include obtaining multiple flow values, including (1) a make-up liquor flow value, (2) a black liquor flow value, (3) a white liquor flow value, (4) a chip chute circulation flow value, and (5) a high pressure feeder purge flow value. Methods can include determining a chip flow value specifying a flow of chips provided to the high-pressure feeder. Based on the flow values, methods can determine a fluid leakage value specifying an amount of fluid leakage through a gap between a pocket rotor and the housing of the high pressure feeder. Methods can adjust an annular gap based on the fluid leakage value satisfies a threshold leakage value.

公开(公告)号：US20140144600A1

公开(公告)日：2014-05-29

申请号：US14171175

申请日：2014-02-03

Applicant: Andritz Inc.

Inventor： Johan Engstrom ,  Jussi Piira ,  Janne Vehmaa ,  Veli-Pekka Tervola ,  Aaron Leavitt

IPC: D21C7/00

CPC classification number: D21C7/00 ,  D21C3/02

Abstract: An apparatus to pulp thin wood chips including: a chip screen receiving chips of comminuted cellulosic material, the screen assembly including a screening assembly which outputs thin chips; a chip bin and conveyor assembly receiving the thin chips output from the chip screen, the lower portion of the chip bin is flooded with white liquor; a continuous digester vessel having an chip inlet at an upper region of the vessel coupled to the chip bin and conveyor assembly, a cooking zone extending vertically from the upper region of the vessel to a wash zone which extends from the cooking zone to a bottom region of the vessel, and a pulp discharge outlet in the bottom region; a steam inlet at the upper region of the inlet, an upper region of the digester vessel at an elevated cooking temperature, and a screen assembly near the wash liquid inlet for the wash zone.

Abstract translation: 一种用于纸浆薄木片的设备，包括：接收粉碎的纤维素材料碎片的切片筛，所述筛组件包括输出薄片的筛选组件; 接收从芯片屏幕输出的薄芯片的芯片仓和输送机组件，芯片仓的下部充满白液; 连续的蒸煮器容器，其在容器的上部区域处具有芯片入口，其连接到切屑仓和输送机组件，烹饪区从容器的上部区域垂直延伸到从烹饪区延伸到底部区域的洗涤区域 和在底部区域中的纸浆排出口; 在入口的上部区域处的蒸汽入口，在升高的烹饪温度下的蒸煮器容器的上部区域，以及用于洗涤区域的洗涤液入口附近的筛网组件。