The pulp and paper process involves complex chemical reactions, material flow, energy transfer and other aspects, and through virtual simulation technology, the entire process can be simulated and optimized, so as to improve production efficiency, reduce costs, and reduce resource waste. This paper will take Beijing OBIER pulp and paper process monitoring and control virtual simulation software as an example to reveal how the process control virtual simulation reproduces the pulp and paper process.
Beijing OBIER pulp and paper process monitoring and control virtual simulation software
The software reproduces the typical process simulation environment of papermaking production in the form of three-dimensional animation, and with the help of the virtual simulation experimental platform, it reproduces the real operation scene of the papermaking production line, and restores the whole process of the whole operation of "raw material cooking, washing and screening, configuration of slurry, head box, net department, pressing, drying, winding into paper, rewinding, paper cutting, packaging, stacking and warehousing" in the papermaking production process, so that students can understand the principle and application of papermaking workshop instruments and actuators. Combined with the realistic papermaking workshop simulation environment, students can more directly understand the control algorithm of papermaking production process, electrical transmission equipment and control algorithm of papermaking production.
In the open-loop state, there is no control mechanism and signal detection mechanism, and the system cannot realize self-regulation when the system runs to a steady state and is disturbed by the outside world.
The topics covered in this module include:
- DCS diagram for open loop control
- Block diagram of open-loop control
- Learning of actuators in open-loop control
- Learning of the control mechanism in open-loop control
In the closed-loop state, there are control mechanisms, actuators, and signal detection mechanisms, and the system can achieve self-adjustment when the system runs to a stable state and is subject to external interference.
The topics covered in this module include:
- DCS diagram for closed-loop control
- Block diagram of closed-loop control
- Learning of the actuator in closed-loop control
- Learning of control mechanisms in closed-loop control
-Wiring of the slurry pump motor and solenoid valve to be controlled
- Preparation of PLC ladder diagrams
- Tuning of PID parameters
- Self-regulation of the system when subjected to external disturbances
The virtual simulation software for automatic control of pulp and papermaking process reproduces the real operation scene of the papermaking production line through virtual simulation technology, and helps students understand the principle and application of papermaking workshop instruments and actuators. The electrical transmission equipment and control algorithm of papermaking production greatly mobilize the enthusiasm and initiative of students to carry out experiments, quickly improve the students' practical skills and vocational post ability, and provide technical support for cultivating outstanding technical talents in automation in papermaking enterprises.