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Pregled bibliografske jedinice broj: 1184319

IMPROVEMENT OF GRANULOMETRIC PROPERTIES OF CRYSTALS BY CONSTANT SUPERSATURATION FEEDBACK CONTROL


Sacher, Josip; Gavran, Matea; Bolf, Nenad; Ujević Andrijić, Željka
IMPROVEMENT OF GRANULOMETRIC PROPERTIES OF CRYSTALS BY CONSTANT SUPERSATURATION FEEDBACK CONTROL // XIV. SUSRET MLADIH KEMIJSKIH INŽENJERA KNJIGA SAŽETAKA / Žižek, Krunoslav ; Katančić, Zvonimir ; Kovačić, Marin (ur.).
Zagreb: Hrvatsko društvo kemijskih inženjera i tehnologa (HDKI), 2022. str. 29-29 (predavanje, međunarodna recenzija, sažetak, znanstveni)


CROSBI ID: 1184319 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
IMPROVEMENT OF GRANULOMETRIC PROPERTIES OF CRYSTALS BY CONSTANT SUPERSATURATION FEEDBACK CONTROL

Autori
Sacher, Josip ; Gavran, Matea ; Bolf, Nenad ; Ujević Andrijić, Željka

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
XIV. SUSRET MLADIH KEMIJSKIH INŽENJERA KNJIGA SAŽETAKA / Žižek, Krunoslav ; Katančić, Zvonimir ; Kovačić, Marin - Zagreb : Hrvatsko društvo kemijskih inženjera i tehnologa (HDKI), 2022, 29-29

Skup
XIV. susret mladih kemijskih inženjera (SMLKI 2022)

Mjesto i datum
Zagreb, Hrvatska, 24.02.2022. - 25.02.2022

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
crystallization ; population balance modeling ; constant supersaturation control

Sažetak
The aim of this work was to investigate different control policies of the batch cooling crystallizer on the granulometric properties of obtained crystals. The study was conducted by computer simulation using population balance modeling in Simulink [1]. The Population balance was solved using the conservation element/solution element (CESE) method and consequently the dynamic evolution of crystal size distribution was obtained. The system under study consisted of 1 liter batch crystallizer with water as solvent and potassium nitrate as solute. The cooling system was not modeled because of the slow nature of the crystallization process and almost instant reaction of thermostat in real life application. The crystallizer was cooled from 32 °C to 20 °C with the starting concentration being saturation concentration at 32 °C. The crystallizer was seeded with 2 g of KNO3 and crystal size distribution of seeds was taken to be normal with mean 200 µm and standard deviation of 50 µm. Two temperature control policies were investigated, namely open loop linear cooling and closed loop (feedback) constant supersaturation control. For open loop linear cooling, different cooling rates were investigated and for the case of closed loop control, different supersaturations were investigated. The linear control policy had shorter operating time, but gave a significantly bigger ratio of nucleated crystals in the final product. Increasing the cooling rate resulted in a higher ratio of nucleated crystals which is considered to be a negative effect. On the other hand, constant supersaturation control had longer operating time, but resulted in a smaller ratio of nucleated crystals in the product. In conclusion, constant supersaturation feedback control is preferred because of improved granulometric properties of the product in comparison with linear open loop cooling policy.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo



POVEZANOST RADA


Projekti:
EK-EFRR-KK.01.1.1.07.0017 - Napredno vođenje procesa kristalizacije (CrystAPC) (Bolf, Nenad, EK - KK.01.1.1.07) ( CroRIS)

Ustanove:
Fakultet kemijskog inženjerstva i tehnologije, Zagreb

Profili:

Avatar Url Željka Ujević Andrijić (autor)

Avatar Url Nenad Bolf (autor)

Avatar Url Matea Gavran (autor)

Avatar Url Josip Sacher (autor)


Citiraj ovu publikaciju:

Sacher, Josip; Gavran, Matea; Bolf, Nenad; Ujević Andrijić, Željka
IMPROVEMENT OF GRANULOMETRIC PROPERTIES OF CRYSTALS BY CONSTANT SUPERSATURATION FEEDBACK CONTROL // XIV. SUSRET MLADIH KEMIJSKIH INŽENJERA KNJIGA SAŽETAKA / Žižek, Krunoslav ; Katančić, Zvonimir ; Kovačić, Marin (ur.).
Zagreb: Hrvatsko društvo kemijskih inženjera i tehnologa (HDKI), 2022. str. 29-29 (predavanje, međunarodna recenzija, sažetak, znanstveni)
Sacher, J., Gavran, M., Bolf, N. & Ujević Andrijić, Ž. (2022) IMPROVEMENT OF GRANULOMETRIC PROPERTIES OF CRYSTALS BY CONSTANT SUPERSATURATION FEEDBACK CONTROL. U: Žižek, K., Katančić, Z. & Kovačić, M. (ur.)XIV. SUSRET MLADIH KEMIJSKIH INŽENJERA KNJIGA SAŽETAKA.
@article{article, author = {Sacher, Josip and Gavran, Matea and Bolf, Nenad and Ujevi\'{c} Andriji\'{c}, \v{Z}eljka}, year = {2022}, pages = {29-29}, keywords = {crystallization, population balance modeling, constant supersaturation control}, title = {IMPROVEMENT OF GRANULOMETRIC PROPERTIES OF CRYSTALS BY CONSTANT SUPERSATURATION FEEDBACK CONTROL}, keyword = {crystallization, population balance modeling, constant supersaturation control}, publisher = {Hrvatsko dru\v{s}tvo kemijskih in\v{z}enjera i tehnologa (HDKI)}, publisherplace = {Zagreb, Hrvatska} }
@article{article, author = {Sacher, Josip and Gavran, Matea and Bolf, Nenad and Ujevi\'{c} Andriji\'{c}, \v{Z}eljka}, year = {2022}, pages = {29-29}, keywords = {crystallization, population balance modeling, constant supersaturation control}, title = {IMPROVEMENT OF GRANULOMETRIC PROPERTIES OF CRYSTALS BY CONSTANT SUPERSATURATION FEEDBACK CONTROL}, keyword = {crystallization, population balance modeling, constant supersaturation control}, publisher = {Hrvatsko dru\v{s}tvo kemijskih in\v{z}enjera i tehnologa (HDKI)}, publisherplace = {Zagreb, Hrvatska} }




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