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Description:
In this project a mathematical model of base paper production process was developed. The dynamics of stock and water systems of a modern paper mill was studied using a mechanistic hybrid simulation model. The combined response of the process equipment and the control system under the transient operational conditions were investigated; both major process equipment and paper mill control structures are included in the simulation model. The effects of the transient operational situations on the water usage of the paper mill were examined.
The simulator was developed during the paper mill design project. The simulator was used for the verification of process and control design, operator training and process analysis studies. All applications were performed before start-up of the plant, which was possible because mechanistic high-fidelity simulation models were used. The models were incorporated into a simulation program called APMS, which can be used to analyze the dynamics of a papermaking process.
On a basis of the research the extended life-cycle concept for using hybrid dynamic simulator through the life-cycle of paper machine was proposed. Optimally the life cycle of dynamic simulator starts at the design phase of the paper mill and follows the life cycle of the mill. The same model can be used in the following application areas: process and engineering, operator training, research and development, and paper mill.
Dynamic process simulation, based on high fidelity mechanistic models, turned out to be a powerful tool for verification of process and automation design as well as for operator training. In future, it provides a strong basis for the virtual paper mill and product development environments as well as for advanced multimedia-training systems.
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