公开(公告)号：AU2020381515A1

公开(公告)日：2022-06-02

申请号：AU2020381515

申请日：2020-11-13

Applicant: BUCKMAN LABOR INC

Inventor： SCHROEN MARK D ,  ARREOLA SERGIO ,  WHITE ROBERT BRIAN ,  LUSK RICHARD ,  BRANDEBURG NATE

IPC: D21D1/00 ,  D21C9/02 ,  D21D99/00

Abstract: A system and method are provided for predictive control of brown stock treatment at a pulp mill. Various online sensors generate output signals representative of actual values for respective process characteristics, each of which are directly or indirectly affected by adjustments to corresponding process variables. A controller uses the output signals or associated measurement data to dynamically set target values for the process characteristics based on a predicted impact of control responses for corresponding process variables. The controller further generates control signals to actuators associated with the respective process variables based on detected variations between the respective actual values and target values. Exemplary brown stock washing control systems may optimize various types of brown stock washing configurations, including for example vacuum drum washers, compaction baffle washers, chemiwashers, direct displacement washers and wash presses. Cloud-based analytics and machine learning may also be implemented to improve the control algorithms over time.

公开(公告)号：AU2018304597B2

公开(公告)日：2019-04-18

申请号：AU2018304597

申请日：2018-07-19

Applicant: BUCKMAN LABOR INC

Inventor： BUIST DAVID ,  HOEKSTRA PHIL ,  GLOVER DANIEL ,  LUSK RICHARD ,  ROY VINCE ,  RUEMMELE COLIN

IPC: D21F5/18 ,  B31F1/12 ,  D21F11/14 ,  D21G9/00

Abstract: A method is provided for decision support in regulating an adhesive coating applied to Yankee dryers. Online sensors are configured to continuously measure stock characteristics, and additional sensors provide actual stock flow rate and machine speed. A controller predicts potential natural coating application from a fibrous sheet generated from the stock to the Yankee dryer surface, substantially in real time, based on the measured characteristics and sensed actual machine values. An output signal may be provided to a display unit, wherein an optimal adhesive coating feed rate may be determined and displayed for operator decision support. The controller may in an automatic mode be configured to regulate the adhesive coating feed rate based on a comparison of one or more determined optimal values associated with respective actual values. The method may include identifying fiber source changes in real time, and predicting a natural coating potential based partly on predetermined correlations.

公开(公告)号：AU2018304597A1

公开(公告)日：2019-04-04

申请号：AU2018304597

申请日：2018-07-19

Applicant: BUCKMAN LABOR INC

Inventor： BUIST DAVID ,  HOEKSTRA PHIL ,  GLOVER DANIEL ,  LUSK RICHARD ,  ROY VINCE ,  RUEMMELE COLIN

IPC: D21F5/18 ,  B31F1/12 ,  D21F11/14 ,  D21G9/00

Abstract: A method is provided for decision support in regulating an adhesive coating applied to Yankee dryers. Online sensors are configured to continuously measure stock characteristics, and additional sensors provide actual stock flow rate and machine speed. A controller predicts potential natural coating application from a fibrous sheet generated from the stock to the Yankee dryer surface, substantially in real time, based on the measured characteristics and sensed actual machine values. An output signal may be provided to a display unit, wherein an optimal adhesive coating feed rate may be determined and displayed for operator decision support. The controller may in an automatic mode be configured to regulate the adhesive coating feed rate based on a comparison of one or more determined optimal values associated with respective actual values. The method may include identifying fiber source changes in real time, and predicting a natural coating potential based partly on predetermined correlations.