公开(公告)号：US20030209335A1

公开(公告)日：2003-11-13

申请号：US10442076

申请日：2003-05-21

Applicant: Andritz Inc.

Inventor： Kaj O. Henricson ,  C. Bertil Stromberg ,  Richard Laakso ,  John F. Bolles ,  Keith P. Vogel ,  Patrick J. Sullivan

IPC: D21C001/10 ,  D21C007/06 ,  D21C007/08

CPC classification number: D21C3/22 ,  D21C7/14

Abstract: A method is disclosed for extracting liquor from a cellulose slurry for a continuous digester comprising the steps of: providing the cellulose slurry of liquor and chips of cellulose fiber material to a separator; extracting a first stream of liquor from the separator; extracting a second stream of liquor from the separator, where the second stream has an effective alkali (EA) concentration greater than the EA concentration of the first steam; outputting the first stream from the separator and outputting the second stream from the separator separately from the second stream, and outputting a condensed slurry from the separator to a digester vessel.

Abstract translation: 公开了一种用于从连续蒸煮器的纤维素浆料中提取液体的方法，包括以下步骤：将纤维素浆料和纤维素纤维材料碎片提供到分离器; 从分离器中提取第一液体流; 从所述分离器中提取第二液体流，其中所述第二流具有比所述第一蒸汽的EA浓度大的有效碱（EA）浓度; 从分离器输出第一流，并将第二流从分离器与第二流分开输出，并将冷凝的浆料从分离器输出到蒸煮器容器。

公开(公告)号：US20030201080A1

公开(公告)日：2003-10-30

申请号：US10428760

申请日：2003-05-05

Applicant: Andritz Inc.

Inventor： Jay K. Sheerer

IPC: D21C003/26 ,  D21C007/06 ,  D21C007/08

CPC classification number: D21C7/06

Abstract: The flow of a liquid slurry of comminuted cellulosic fibrous material (e.g. wood chips) in a vertical vessel is made more uniform by providing a plurality of vertically spaced sets of either substantially continuous or discontinuous protrusions which extend inwardly from the internal surface of the vessel a maximum distance of between about 2-12 inches. A preferred vessel is a continuous or batch digester. The protrusions may have an arcuate, rectangular, isosceles or scalene triangular, right triangular, or trapezoidal cross-section, and may be spaced from each other vertically between about 1-12 feet, and have a height of between about 1-3 feet. Discontinuous protrusions have a preferred arcuate spacing of between 1-10 feet.

公开(公告)号：US20030062139A1

公开(公告)日：2003-04-03

申请号：US10290272

申请日：2002-11-08

Applicant: Andritz, Inc.

Inventor： Keith P. Vogel ,  John F. Bolles ,  C. Bertil Stromberg

IPC: D21C007/06 ,  D21C007/08

CPC classification number: D21C7/00 ,  D21C7/06 ,  D21C7/14

Abstract: A top separator assembly for a digester is disclosed comprising: a rotatable shaft for the top separator; a packing for the shaft; and a sealing ring operatively mounted to the shaft and having a nominal clearance with the pack box, said sealing ring mounted so that up lifting of said shaft provides a substantially fluid tight seal between said pack box and a side of said ring (in the digester) opposite the pack box.

公开(公告)号：US20020176752A1

公开(公告)日：2002-11-28

申请号：US10194239

申请日：2002-07-15

Applicant: Andritz, Inc.

Inventor： J. Robert Prough

IPC: B65G053/08

CPC classification number: B65G53/4633

Abstract: A high pressure transfer device has a rotor mounted in a housing for rotation with respect to inlet and outlet ports and having through going pockets. The pockets have interior surface configurations substantially devoid of nooks, crannies, and related flow restrictions. This can be accomplished by providing inserts in the pockets, or by constructing the pockets so that there are substantially smooth interior wall tubes extending from one end of the rotor and the other and cooperating with an inlet and an outlet at the same time. Using the high pressure transfer device to feed wood chips or the like in a slurry using a high pressure transfer pump can result in flow through the rotor pockets that is more uniform by at least 5% compared to in conventional high pressure transfer devices.

Abstract translation: 高压传送装置具有安装在壳体中的转子，用于相对于入口和出口旋转并具有穿过口袋。 这些口袋具有基本上没有角落，颅骨和相关流动限制的内表面配置。 这可以通过在袋中提供插入物，或者通过构造袋来实现，使得从转子的一端延伸的基本平滑的内壁管和另一端并且同时与入口和出口配合。 使用高压转移装置使用高压输送泵将木屑等进料到浆料中可以导致与传统的高压转移装置相比更均匀的流过转子袋的至少5％。

公开(公告)号：US6432264B2

公开(公告)日：2002-08-13

申请号：US90002701

申请日：2001-07-09

Applicant: ANDRITZ INC

Inventor： PROUGH J ROBERT ,  JOHANSON JERRY R

IPC: D21C1/00 ,  D21C7/08 ,  D21C7/12

CPC classification number: D21C7/08

Abstract: In a cellulose pulp handling vessel having a first diameter material storing or treating portion above a second diameter discharge which is at least 20% less than the first diameter, reduced compression of the material and reduced power requirements of an agitator (if used), compared to prior art constructions are provided. A first transition, preferably a substantially smooth interior surface substantially frusto-conical transition, is provided between the first and second diameters. A second single-convergent transition may be provided above the first transition. A rotating agitator with at least two arms and associated paddles may be mounted for rotation in the transition about a substantially vertical axis for agitating the material in the transition. If desired, the transition may be moved, such as with a vibrator or oscillator. The invention is particularly suitable for pulp digesters and impregnation vessels.

Abstract translation: 在具有比第一直径小至少20％的第二直径排出口上方的第一直径材料储存或处理部分的纤维素纸浆处理容器中，材料的减小的压缩和搅拌器的功率要求（如果使用的话）被比较 提供了现有技术的结构。 在第一直径和第二直径之间提供第一过渡，优选地基本上平滑的内表面基本上截头圆锥形过渡。 可以在第一过渡之上提供第二单收敛过渡。 具有至少两个臂和相关桨叶的旋转搅拌器可以被安装成围绕基本上垂直的轴线在转变中旋转以在过渡中搅拌材料。 如果需要，可以移动转换，例如用振动器或振荡器。 本发明特别适用于纸浆消化器和浸渍容器。

公开(公告)号：US20240417927A1

公开(公告)日：2024-12-19

申请号：US18816213

申请日：2024-08-27

Applicant: ANDRITZ INC.

Inventor： Gregory Alan Imig

IPC: D21C11/10 ,  F23D14/24

Abstract: A startup burner assembly for a recovery boiler, the startup burner assembly includes a housing having a burner end and a second end distal to the burner end; a main fuel conduit disposed within the housing; and at least one high-pressure air conduit disposed within the burner end of the housing. The high-pressure air conduit includes at least one angled air injection nozzle configured to direct high-pressure air exiting the burner end of the startup burner assembly in a rotational direction.

公开(公告)号：US12157975B2

公开(公告)日：2024-12-03

申请号：US17910344

申请日：2021-04-09

Applicant: ANDRITZ INC.

Inventor： Ralph Prescott ,  Jay Shands

IPC: D21G9/00 ,  D21F1/02

Abstract: A method for controlling a slice flow of a slurry having two or more component slurries through a headbox for a paper making machine includes, inputting a wire speed of the paper making machine; determining a jet velocity setpoint based on the wire speed; determining a header pressure setpoint for two or more headers to generate the jet velocity determined by the jet velocity setpoint, each header providing one of the two or more component slurries to the headbox; and controlling the slice flow by: generating a first speed command to a first slurry pump to generate a header pressure determined by the header pressure setpoint in a first header; and generating a second speed command to a second slurry pump to generate the header pressure determined by the header pressure setpoint in a second header.

公开(公告)号：US20240160187A1

公开(公告)日：2024-05-16

申请号：US18281724

申请日：2021-03-24

Applicant: Andritz Inc.

Inventor： Verena GISSING ,  Patrick LEUK

IPC: G05B19/418

CPC classification number: G05B19/41835 ,  G05B2219/36289

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, that can optimize a manufacturing plant's operations and/or production based on simulations that utilize information about the current and forthcoming manufacturing conditions to determine the optimal operational characteristics for the different plant devices. Methods may include obtaining, using data from a set of sensors, a set of current operational characteristics for multiple plant devices in a plant. Multiple manufacturing scenarios can be simulated using different sets of operational characteristics for plant devices in which at least one operational characteristic from the set of current operational characteristics is varied. A first manufacturing scenario can be determined that satisfies overall operational parameter(s) for one or more plant devices or for the whole manufacturing plant. Setting(s) of one or more plant devices can be adjusted based on a set of operational characteristics corresponding to the first manufacturing scenario.

公开(公告)号：US11982053B2

公开(公告)日：2024-05-14

申请号：US17277205

申请日：2019-10-07

Applicant: ANDRITZ INC.

Inventor： Luc Gingras ,  Tobias Michel

IPC: D21D1/30 ,  B02C7/06 ,  B02C7/12

CPC classification number: D21D1/306 ,  B02C7/12 ,  B02C7/06

Abstract: The problem of increased energy usage in refiners over the working life of a refining assembly is mitigated by the use of a refiner plate segment having a refiner side and a back side distally disposed from the refiner side, refiner bars engaged to a substrate of the refiner side, wherein the refiner bars have a refiner bar height, and wherein adjacent refiner bars and the substrate define grooves between the adjacent bars, and protrusions disposed in the grooves, wherein the protrusions have a protrusion height, wherein the protrusion height is 30% or less of the refiner bar height.

公开(公告)号：US11859344B2

公开(公告)日：2024-01-02

申请号：US17451660

申请日：2021-10-21

Applicant: ANDRITZ INC.

Inventor： Luc Gingras

IPC: D21C5/02

CPC classification number: D21C5/025

Abstract: A plate segment includes: a substrate having a front side and a back side, wherein the back side is configured to be mounted to a support disc of a disperser; and rows of teeth protruding from the front side of the substrate. The rows of teeth are arranged along an arc extending from a first lateral side of the plate segment to an opposite lateral side of the plate segment. A first tooth in the rows of teeth has a first tooth face. A buttress extends from the first tooth face to a face of an adjacent tooth. The buttress has a concave profile at a height above the substrate less than a full height of the teeth.