公开(公告)号：US11851816B2

公开(公告)日：2023-12-26

申请号：US17451661

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; rows of teeth protruding from the front side of the substrate, wherein each of the rows are arranged along an arc extending from one side of the plate segment to an opposite side of the plate segment. In at least one of the rows of teeth, adjacent teeth are joined by a bridge spanning a gap between the adjacent teeth. The bridge is elevated above the front side of the substrate such that the bridge is separated from the front side by an open space in the gap.

公开(公告)号：US11819858B2

公开(公告)日：2023-11-21

申请号：US16782519

申请日：2020-02-05

Applicant: Andritz Inc.

Inventor： Arvind M. Singhal ,  Long Nguyen

IPC: B02C7/12 ,  D21D1/30 ,  D21D1/00

CPC classification number: B02C7/12 ,  D21D1/008 ,  D21D1/30

Abstract: This disclosure relates to refiner plate segments having feeding grooves having a first width at a first end of the feeding groove, wherein the first end of the feeding groove is disposed closer to an inner diameter of the refiner plate segment, and a second end of the feeding groove having a second width, wherein the second end of the feeding groove is disposed closer to the outer diameter than the first end and wherein the second width is less than the first width. It is believed that the increased width of the feeding groove at the inner diameter, coupled with the change in angle or curve of the feed groove from a feeding angle to a holding angle such that the centrifugal force applied to the lignocellulosic material surpasses the plugging force, allows for improved hydraulic capacity over the refiner plate segment without reducing refining efficiency.

公开(公告)号：US11789431B2

公开(公告)日：2023-10-17

申请号：US17009047

申请日：2020-09-01

Applicant: Andritz Inc.

Inventor： Elisa De Podestà Gomes ,  Everton Rocha de Souza ,  Matheus Sessim Gomes ,  Hamilton Fabio Borges

IPC: G05B19/418

CPC classification number: G05B19/41835 ,  G05B2219/31372 ,  G05B2219/37032

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, that optimize operation of manufacturing plants by adjusting the operation of manufacturing devices in manufacturing plants based on an assessment of their operations. Methods may include obtaining, from a first set of sensors, vibration data specifying vibration in a manufacturing device of a manufacturing plant. The vibration data may be processed to identify a vibration signature. Based on the vibration signature and known vibration signatures, a first operational state of the manufacturing device may be determined. One or more operational characteristics of the manufacturing device may be adjusted based on the first operational state of the manufacturing device, to achieve a second operational state.

公开(公告)号：US20230167605A1

公开(公告)日：2023-06-01

申请号：US17989428

申请日：2022-11-17

Applicant: Andritz Inc.

Inventor： Luc Gingras ,  Ismo Ihalainen

IPC: D21D1/30 ,  B03B5/64 ,  D21D1/22

CPC classification number: D21D1/306 ,  B03B5/64 ,  D21D1/22

Abstract: A deflaker plate for a deflaker machine may include a substrate and a plurality of teeth extending from the substrate, wherein a specified number of teeth of the plurality of teeth have a serrated face.

公开(公告)号：US20230160144A1

公开(公告)日：2023-05-25

申请号：US17910344

申请日：2021-04-09

Applicant: ANDRITZ INC

Inventor： Ralph Prescott ,  Jay Shands

IPC: D21G9/00 ,  D21F1/02

CPC classification number: D21G9/0018 ,  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：US11643779B2

公开(公告)日：2023-05-09

申请号：US17081693

申请日：2020-10-27

Applicant: Andritz Inc.

Inventor： Luc Gingras ,  Marc Berger

IPC: B02C7/12 ,  D21D1/30

CPC classification number: D21D1/306 ,  B02C7/12

Abstract: A refiner disc including: a refining zone on a front face of the disc; refining bars in the refining zone; and grooves between the bars, wherein each of the grooves include a rotational inducement element arranged on at least one sidewall of the groove and the rotational inducement element is configured to impart at helical flow of feed material flowing through the groove.

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：US11555273B2

公开(公告)日：2023-01-17

申请号：US17521339

申请日：2021-11-08

Applicant: ANDRITZ INC.

Inventor： Luc Gingras ,  Tom Berger ,  Yves Raymond ,  Long Nguyen

IPC: D21D1/26

Abstract: Refiner plate elements for a conical mechanical refiner include: a rotor plate element including at least one rotor plate segment having a feedstock inlet opening disposed at a first end of the rotor plate segment; and a rotor plate segment refining area disposed between the feedstock inlet opening and a second end of the rotor plate segment. The refiner plate elements may further include: a stator plate element including at least one stator plate segment having a stator plate segment refining area; and first and second attaching rails configured to couple to the stator plate segment to a stator support frame of the conical mechanical refiner. A separation between the first attaching rail and the second attaching rail that is not covered by the stator plate segment is configured to form a feedstock outlet opening.

公开(公告)号：US20220380978A1

公开(公告)日：2022-12-01

申请号：US17883588

申请日：2022-08-08

Applicant: ANDRITZ INC.

Inventor： John Phillips

IPC: D21C11/12 ,  D21G9/00 ,  G01N29/02

Abstract: A disruptor adjustment system comprising: a disruptor assembly configured to disrupt a volume of smelt flowing from a smelt spout into a dissolving tank, wherein the disruptor assembly comprises an actuator operatively engaged to a disruptor, a sensor configured to record process data from the recovery boiler; and a control system configured to receive a sensor output signal from the sensor, wherein the sensor output signal indicates the process data at a measured time, wherein the control system is further configured to compare the sensor output signal to a programmed operation range, and to send a disruptor input signal to the disruptor assembly to adjust a disruptor operating condition if the process data of the sensor output signal is outside of the programmed operation range. In certain exemplary embodiments, the sensor is an image capture device. In certain exemplary embodiments, the disruptor assembly can be adjusted remotely.

公开(公告)号：US11162220B2

公开(公告)日：2021-11-02

申请号：US16413003

申请日：2019-05-15

Applicant: Andritz Inc.

Inventor： Arvind M. Singhal ,  Peter Antensteiner

IPC: D21D1/30 ,  B02C7/12

Abstract: A refiner includes two or more facing refining assemblies. Each refining assembly includes a backing structure and refiner plate segments engaged to the backing structure A series of alternating bars and grooves defines a refining surface on each refiner plate segment. The refiner plate segments of the first refining assembly have a terminal edge perimeter defined by two or more terminal edges of bars disposed closest to the outer arc of the substrate of the first refining assembly. The refiner plate segments of the second refining assembly have an outermost edge circumference defined by an outermost terminal edge of a bar disposed closest to the outer arc of the substrate of the second refining assembly facing the first refining assembly. The terminal edge perimeter of the first refining assembly is not parallel to the outermost edge circumference of the second refining assembly.