公开(公告)号：US12077911B2

公开(公告)日：2024-09-03

申请号：US17097957

申请日：2020-11-13

Applicant: Buckman Laboratories International, Inc.

Inventor： Mark D. Schroen ,  Sergio Arreola ,  Robert Brian White ,  Richard Lusk ,  Nate Brandeburg

IPC: D21C3/22 ,  D21C3/24 ,  D21C9/02 ,  D21C9/06 ,  G01N33/34

CPC classification number: D21C3/228 ,  D21C3/24 ,  D21C9/02 ,  D21C9/06 ,  G01N33/343

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：US20210148047A1

公开(公告)日：2021-05-20

申请号：US17097957

申请日：2020-11-13

Applicant: Buckman Laboratories International, Inc.

Inventor： Mark D. Schroen ,  Sergio Arreola ,  Robert Brian White ,  Richard Lusk ,  Nate Brandeburg

IPC: D21C3/22 ,  D21C9/02 ,  D21C3/24 ,  G01N33/34

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.