PROCESS MODELING IN PULPING PROCESS
Zhang, Huizhong (2010)
Zhang, Huizhong
Saimaan ammattikorkeakoulu
2010
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Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:amk-201104124155
https://urn.fi/URN:NBN:fi:amk-201104124155
Tiivistelmä
The purpose of this bachelor’s thesis is to know well the function and importance of process modeling in regards to an industry project, from the preliminary process design until shutting the plant down. A variety of software simulators in present are employed in process modeling, thus an additional purpose is get familiar with the application of one simulator. BALAS simulator is selected and offered by Saimaa University of Applied Sciences, Imatra. The results with the BALAS simulator are done on sources of variation in mechanical and chemimechanical pulping processes.
In the simulation part, PGW 70 and CTMP pulping process were employed. Various wood raw materials should effect the pulp production and consumptions of all kinds of raw material. The comparing analysis consists of the consumption of wood, chemicals, water, and energy by two processes, the proportions between the amount of water circulation and energy recovery and the amount of using water and energy. Though, the BALAS simulator is focuses on preliminary process design and operation. More accurate results cannot be obtained if process simulated with only one single simulator.
In the simulation part, PGW 70 and CTMP pulping process were employed. Various wood raw materials should effect the pulp production and consumptions of all kinds of raw material. The comparing analysis consists of the consumption of wood, chemicals, water, and energy by two processes, the proportions between the amount of water circulation and energy recovery and the amount of using water and energy. Though, the BALAS simulator is focuses on preliminary process design and operation. More accurate results cannot be obtained if process simulated with only one single simulator.