diplomsko delo
Martina Potočnik (Author), Rok Ambrožič (Mentor)

Abstract

Destilacija je učinkovita separacijska tehnika za ločevanje komponent iz tekoče mešljive mešanice na podlagi njihovih različnih vrelišč. Manjše dimenzije destilacijskih naprav izboljšajo medfazno kontaktno površino in s tem povečajo vpliv površinskih sil na kvaliteto in učinkovitost ločbe ter hkrati zmanjšajo pomen gravitacijskih sil. Pred dizajnom nove naprave je potreben pregled obstoječih prototipov za izvedbo pretočne destilacije/separacije v mikro-sistemu. Z izrabo pozitivnih lastnosti in izboljšanjem pomanjkljivosti posameznih naprav lahko nadzorujemo vpliv različnih spremenljivk, kot so dimenzije, postavitev, izbira materialov, na učinkovitost ločbe in s tem povezano intenzifikacijo procesa. Pri razvoju kontinuirnih mikro-destilacijskih naprav je pomemben nadzor tokovnega režima vstopne mešanice, saj morajo biti v obeh kanalih (za kapljevinasto in parno fazo) vzpostavljeni stacionarni pogoji. Ob enem je pomembna tudi izbira ustreznega stičišča med obema kanaloma in nadzor kritičnih procesnih parametrov, kot sta kontaktna površina in zadrževalni čas. V okviru diplomske naloge bodo tako preučeni dosedanji dizajni mikro-destilacijskih naprav ter podane usmeritve pri dizajnu novih prototipov.

Keywords

mikro-separacijske naprave;mikro-destilacijske naprave;načrtovanje mikro-strukturiranih sistemov;matematično modeliranje;diplomska dela;

Data

Language: Slovenian
Year of publishing:
Typology: 2.11 - Undergraduate Thesis
Organization: UL FKKT - Faculty of Chemistry and Chemical Technology
Publisher: [M. Potočnik]
UDC: 66.021.3.048(043.2)
COBISS: 169979139 Link will open in a new window
Views: 88
Downloads: 12
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Other data

Secondary language: English
Secondary title: Micro-structured separation devices development and design – continuous distillation miniaturisation
Secondary abstract: Distillation is an effective separation technique for separating components based on their different boiling points from miscible liquids. The smaller dimensions of microdistillation devices increase the interface area, which affects separation efficiency and quality by increasing surface forces and reducing gravity forces. Before designing a new device, it is necessary to review the existing prototypes for continuous distillation/separation in microsystems. In doing so, we can exploit the benefits and optimize the drawbacks of each individual device, as well as study the influence of individual variables, such as dimensions, layout, material selection, etc., on separation performance and the resulting process intensification. When designing continuous microdistillation devices, it is important to control the flow regime of the inlet feedstock, since steady-state conditions must be established in both channels (for the liquid and vapor phases). In addition, the selection of a suitable micro-contactor and control of several critical process parameters, such as interface area and retention times, are also crucial. Finally, in diploma thesis the currently established designs of micro-structured distillation device will be examined and guidelines for the design of new prototypes will be provided.
Secondary keywords: Destilacija;Separacija (tehnologija);Univerzitetna in visokošolska dela;
Type (COBISS): Bachelor thesis/paper
Study programme: 1000372
Embargo end date (OpenAIRE): 1970-01-01
Thesis comment: Univ. v Ljubljani, Fak. za kemijo in kemijsko tehnologijo, UNI Kemijsko inženirstvo
Pages: 36 str.
ID: 19909027