magistrsko delo
Sebastijan Rajšter (Author), Igor Plazl (Mentor), Marjan Marinšek (Thesis defence commission member), Rok Ambrožič (Thesis defence commission member)

Abstract

Mikrosistemi so uporabni tako kot orodje procesne intenzifikacije kot tudi analizno orodje. Cilj dela je bil pokazati rokovanje in načrtovanje mikrofluidnega sistema z znanim šaržnim procesom katalitskih reakcij v dvofaznem sistemu. Sistem sestavljata vodna in organska faza, v slednji se nahajata tudi reaktant in produkt, reakcija pa poteka na fazni površini in je eksotermna, kar pomeni, da je njeno izvajanje v mikrosistemu zaželeno. Z izvajanjem meritev pri različnih temperaturah in s prilagajanjem parametrov v računalniškem programu na različne zastavljene sisteme so bili pridobljeni kinetični parametri, ki opisujejo reakcije, potrjen pa je bil tako red reakcije kot tudi potrebna hitrost mešanja. S pomočjo mikrokanala je bila določena tudi difuzivnost komponent v svoji fazi, kar omogoča nadaljnjo simulacijo. Ta je rezultat posameznih delov naloge in prikazuje kako temperatura in dolžina in s tem zadrževalni čas vpliva na proučevan sistem. S pomočjo znanja modeliranja in poznavanja mikroreaktorjev lahko ustvarimo simulacijo, ki znatno skrajša čas, ki bi bil v nasprotnem primeru potreben za eksperimentalno iskanje optimalnih parametrov za industrijsko izvajanje reakcije.

Keywords

katalitske reakcije;procesna intenzifikacija;matematično modeliranje;difuzivnost;reakcijske konstante;magistrska dela;

Data

Language: Slovenian
Year of publishing:
Typology: 2.09 - Master's Thesis
Organization: UL FKKT - Faculty of Chemistry and Chemical Technology
Publisher: [S. Rajšter]
UDC: 66.02(043.2)
COBISS: 172577027 Link will open in a new window
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Downloads: 37
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Other data

Secondary language: English
Secondary title: Process Intensification of Catalytic Reactions in Two-Phase System
Secondary abstract: Microsystems are useful both as a process intensification tool and as an analysis tool. The aim of the thesis was to demonstrate the handling and design of a microfluidic system with a known batch process of catalytic reactions in a two-phase system. The system consists of an aqueous and an organic phase, the latter also contains the reactant and the product, and the reaction takes place on the phase surface and is exothermic, which means that its implementation in the microsystem is desirable. By carrying out measurements at different temperatures and adjusting the parameters in the computer program to different set systems, the kinetic parameters describing the reactions were obtained, and both the order of the reaction and the necessary mixing speed were confirmed. The diffusivity of the components in their phase was also determined with the help of the microchannel, which enables further simulation. This is the result of individual parts of the task and shows how temperature and length, and thus residence time, affect the studied system. With the help of modeling knowledge and knowledge of microreactors, we can create a simulation that significantly shortens the time that would otherwise be required for the experimental search for appropriate parameters for the industrial implementation of the reaction.
Secondary keywords: modeling;microreactor;catalytic reaction;process intensification;Mikroreaktorji;Univerzitetna in visokošolska dela;
Type (COBISS): Master's thesis/paper
Study programme: 1000376
Embargo end date (OpenAIRE): 1970-01-01
Thesis comment: Univ. v Ljubljani, Fak. za kemijo in kemijsko tehnologijo, smer Kemijsko inženirstvo
Pages: 78 str.
ID: 19970009