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公开(公告)号：US20240240401A1
公开(公告)日：2024-07-18
申请号：US18096789
申请日：2023-01-13
Applicant: ANDRITZ INC.
Inventor： Tyson B. Hunt , Grant Bechard , Spencer Williams , Keith Vogel , Jeff Williams
Abstract: A bearing for guiding reciprocating vertical movement of a pressure diffuser screen assembly may include: a bearing cylinder; a screen extension having an upper portion configured to couple to a lower portion of the pressure diffuser screen assembly, the screen extension having a screen extension outer diameter less than a pressure diffuser screen assembly outer diameter and less than an inner diameter of the bearing cylinder; and a bearing assembly configured to couple to the screen extension at a lower portion of the screen extension, the bearing assembly having a bearing assembly inner diameter corresponding to the screen extension outer diameter and a bearing assembly outer diameter corresponding to the inner diameter of the bearing cylinder. An inner diameter of the bearing cylinder may provide a bearing surface for the bearing assembly.
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公开(公告)号：US11633681B2
公开(公告)日：2023-04-25
申请号：US16775744
申请日：2020-01-29
Applicant: Andritz Inc.
Inventor： Todd Grace , Kent Stubblefield
IPC: B01D35/02
Abstract: A removable filter plate for a rotary drum filter that reduces instances of welding to secure the filter plate to the drum and obviates the need for cap strips. An exemplary filter plate assembly in accordance with this disclosure comprises a filter plate and an engagement assembly, wherein the engager of the engagement assembly is configured to extend in a lateral direction toward the leading end or the trailing end of the filter plate, wherein an extended engager having an engagement end disposed under a shelf of the adjacent top hat mounting assembly defines a closed position, and wherein a retracted engager defines an open position.
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公开(公告)号：US11628446B2
公开(公告)日：2023-04-18
申请号：US17027247
申请日：2020-09-21
Applicant: Andritz Inc.
Inventor： Luc Gingras , Marc Berger
Abstract: This disclosure relates to an apparatus for a counter-rotating mechanical refiner configured to mitigate the problems of feeding variations, load variations, high energy consumption due to poor feeding efficiency, low pulp quality, and reduced throughput capacity by positioning a flinger proximate to a rotor gap side of a first rotor, wherein the first rotor further comprises an inlet extending through the first rotor, such that a portion of the operational flinger deflects feed material from the inlet into the refiner gap while rotating in the direction of the first rotor.
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公开(公告)号：US11507070B2
公开(公告)日：2022-11-22
申请号：US17324859
申请日：2021-05-19
Applicant: Andritz Inc.
Inventor： Arthur Gooch
IPC: G06F9/44 , G06F9/455 , G06F9/445 , G05B19/418 , G06N3/08
Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for training an industrial plant controller that controls operation of an industrial plant. In one aspect, a method comprises generating training data using an industrial plant simulation model that simulates operation of the industrial plant. The industrial plant controller is trained by a reinforcement learning technique using the training data. The industrial plant controller is configured to process an input comprising a state vector characterizing a state of the industrial plant in accordance with a plurality of industrial plant controller parameters to generate an action selection policy output that defines a control action to be performed to control the operation of the industrial plant.
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公开(公告)号：US11421383B2
公开(公告)日：2022-08-23
申请号：US16999777
申请日：2020-08-21
Applicant: Andritz Inc.
Inventor： Nicholas Hart , Lairton Cardoso , Peter Ebneth , Andries Nienaber
IPC: D21F7/00
Abstract: The problem of inconsistent steam penetration of a fibrous sheet is solved by a steam box having a steam header, a diffuser housing disposed within the steam header, wherein walls disposed in the diffuser housing divide an inside of the diffuser housing into multiple diffuser chambers, wherein a valve is configured to fluidly and programmatically communicate with each of the multiple diffuser chambers, such that a steam from the header box may selectively enter one of the diffuser chambers depending upon the valve's orientation in an open or closed position; and multiple orifices of different sizes per diffuser chamber. Ideally, exemplary steam boxes may also comprise a diffuser plates per diffuser chamber. Preferably, the diffuser plates may be located at a bottom of the diffuser chamber. Exemplary steam box systems may further comprise control equipment to manage the flow of steam from the steam header into the diffuser chambers.
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Patent Agency Ranking
公开(公告)号：US11352746B2
公开(公告)日：2022-06-07
申请号：US16884296
申请日：2020-05-27
Applicant: ANDRITZ INC.
Inventor： Antti Luukkonen , Christian Radhuber
Abstract: A system and process of producing pulp from lignocellulosic material after the lignocellulosic material has undergone compression (pressurization), maceration and removal of extractives produced during compression and maceration followed by chemical addition, fiberization, digestion (cooking) and further mechanical refining.
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公开(公告)号：US20210189649A1
公开(公告)日：2021-06-24
申请号：US16953843
申请日：2020-11-20
Applicant: Andritz Inc.
Inventor： JOHN PHILLIPS
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.
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公开(公告)号：US10995991B2
公开(公告)日：2021-05-04
申请号：US16133365
申请日：2018-09-17
Applicant: Andritz Inc.
Inventor： Kimmo Peltonen
Abstract: This application discloses exemplary processes and systems for reducing mineral ring accumulation in calcination kiln. The processes and systems comprise inserting non-condensable gases (“NCGs”) in a preheating zone of a calcination kiln, upstream of the burner end. The pre-heating zone may be characterized by temperatures ranging from 1,300° F. to 1,750° F. The system may desirably comprise a plenum for inserting the NCGs into the rotating calcination kiln at the pre-heating zone.
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公开(公告)号：US20210062425A1
公开(公告)日：2021-03-04
申请号：US16999777
申请日：2020-08-21
Applicant: Andritz Inc.
Inventor： Nicholas Hart , Lairton Cardoso , Peter Ebneth , Andries Nienaber
IPC: D21F7/00
Abstract: The problem of inconsistent steam penetration of a fibrous sheet is solved by a steam box having a steam header, a diffuser housing disposed within the steam header, wherein walls disposed in the diffuser housing divide an inside of the diffuser housing into multiple diffuser chambers, wherein a valve is configured to fluidly and programmatically communicate with each of the multiple diffuser chambers, such that a steam from the header box may selectively enter one of the diffuser chambers depending upon the valve's orientation in an open or closed position; and multiple orifices of different sizes per diffuser chamber. Ideally, exemplary steam boxes may also comprise a diffuser plates per diffuser chamber. Preferably, the diffuser plates may be located at a bottom of the diffuser chamber. Exemplary steam box systems may further comprise control equipment to manage the flow of steam from the steam header into the diffuser chambers.
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公开(公告)号：US10589279B2
公开(公告)日：2020-03-17
申请号：US16220377
申请日：2018-12-14
Applicant: Andritz Inc.
Inventor： Marc Berger , Luc Gingras
Abstract: This disclosure relates to a refiner plate segment, mechanical refiners, and methods to manufacture a refiner plate segment having one or more water channels disposed in a variable substrate profile along the radial length of a refiner plate segment base and disposed between the refiner plate segment inlet and the primary refining section, wherein the variable substrate profile comprises an undulating curve configured to complement a second undulating curve on an opposing refiner plate, and wherein dimensions of the one or more water channels are sufficiently narrow to prevent wood chips from entering the water channels and sufficiently wide to provide a bypass path for the free water.
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