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Results of field tests

In this Task, Kemira Oulu Research Centre studied the on-line measurements and actuators of fine chemical crystallisation for Kemira Fine Chemicals. ATR-FTIR and Reac-FTIR was used for super-saturation measurements and PsyA was used for CSD measurement. As the actuators seeding and evaporation rate were used. The experiments were done in lab and batch scale. The results for super-saturation measurement were so encouraging that they were presented also by LUT (sub-contractor) in an international crystallisation conference. The research was done for Kemira Fine Chemicals, which was sold just after the experiments were finished. Therefore, the exploitation plan for material specific knowledge is unknown to us. The method specific information Kemira can use when new crystallisation topics arise. Measurement devices that were used were from LUT (Lappeenranta University of Technology) and ERC (Kemira Espoo Research Centre) and therefore the utilisation of method specific knowledge gained in this project would demand co-operation with the device owners.

Field tests at Purac proved the possibility to use model predictive control in order to control the crystallization according to a predefined process trajectory. This technique is now available to be used within industry.

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Arkelsedijk 46 P.B. 21
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