公开(公告)号：US20230160144A1

公开(公告)日：2023-05-25

申请号：US17910344

申请日：2021-04-09

申请人： ANDRITZ INC

发明人： Ralph Prescott ,  Jay Shands

IPC分类号： D21G9/00 ,  D21F1/02

CPC分类号： D21G9/0018 ,  D21F1/02

摘要： 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.