Priprema keramičkih monolitnih nosača katalizatora tehnologijom proizvodnje rastaljenim filamentom

undergraduate thesis

• Title (english): Preparation of ceramic monolithic catalyst carriers by fused filament fabrication
• Author: Antonela Čolo
• Mentor: Vesna Tomašić (mentor)
• Committee member: Vesna Tomašić (predsjednik povjerenstva)
• Committee member: Filip Car (član povjerenstva)
• Committee member: Emi Govorčin Bajsić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Chemical Engineering and Technology; Zagreb
• Defense date and country: 2024-09-20, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Chemical Engineering

Abstract

Moderne tehnologije aditivne proizvodnje (ili 3D-ispisa) koje omogućuju izradu vrlo složenih geometrija snažno su potaknule razvoj industrije. To se zasniva na brojnim prednostima aditivne proizvodnje u odnosu na konvencionalne metode proizvodnje, a posebice na brzinu izrade, jednostavnost i nižu cijenu izrade vrlo složenih proizvoda, mogućnost primjene različitih polaznih materijala te ekološku prihvatljivost s obzirom da uglavnom ne dolazi do nastajanja otpadnih materijala ili je njihovo nastajanje minimalno. Do danas su razvijene brojne tehnike aditivne proizvodnje koje se međusobno razlikuju po korištenim materijalima, principima rada te izvedbi uređaja. Prema ISO/ASTM 52900:2021 normi tehnike aditivne proizvodnje dijele se u sedam kategorija, a jedna od najzastupljenijih je tehnologija proizvodnje rastaljenim filamentom (FFF) koja se zasniva na ekstruziji odgovarajućeg materijala. Ova tehnologija svoju popularnost temelji na mogućnosti izrade vrlo složenih proizvoda ili ugradbenih dijelova u jako kratkom vremenu. Pritom je moguće koristiti različite polazne materijale zavisno o zahtjevima očekivanog konačnog proizvoda. Zahvaljujući brojnim prednostima ova tehnologija ima važnu primjenu u području katalitičkog reakcijskog inženjerstva. U ovom radu analizirane su komparativne prednosti aditivne tehnologije izrada složenih strukturiranih i monolitnih izvedbi katalizatora/reaktora u odnosu na tradicionalne metode ekstrudiranja. Pritom je poseban naglasak dan na tehnologiju rastaljenim filamentom. Opisane su izvedbe 3D-pisača, materijali pogodni za primjenu, te ključni izazovi koji se mogu pojaviti tijekom procesa ispisa, uz prikaz mogućih rješenja. U završnom dijelu dan je primjer primjene FFF tehnologije.

Abstract (english)

Modern technologies of additive manufacturing (or 3D-printing), which enable the creation of very complex geometries, have strongly stimulated the development of the industry. This is based on the numerous advantages of additive manufacturing compared to conventional production methods, especially the speed of production, the simplicity and lower cost of manufacturing very complex products, the possibility of using different starting materials, and environmental acceptability, given that there is mostly no waste material generated or their formation is minimal. To date, numerous additive manufacturing techniques have been developed differing from each other in the materials used, operating principles and device configurations. According to ISO/ASTM 52900:2021, the standards of additive manufacturing techniques are divided into seven categories, and one of the most widely used is the fused filament fabrication (FFF), which is based on the extrusion of the corresponding material. This technology bases its popularity on the possibility of making very complex products or embedded parts in a very short time. It is possible to use different starting materials depending on the requirements of the expected final product. Thanks to its numerous advantages, this technology has an important application in the field of catalytic reaction engineering. In this article, the comparative advantages of additive manufacturing technologies for the production of complex structured and monolithic designs of catalysts/reactors are analyzed in comparison to traditional extrusion processes. Special emphasis is placed on fused filament technology. Different types of 3D printers, suitable materials for application, utilization and the main challenges that may arise during the printing process, along with possible solutions are described. In the last part, an example of the application of FFF technology is given.

• Keywords: aditivna proizvodnja; monolitni katalizatori/reaktori; tehnologija proizvodnje rastaljenim filamentom (FFF)
• Keywords (english): aditive manufacturing; monolithic catalysts/reactors; fused filament fabrication technology (FFF)
• Language: croatian
• URN:NBN: urn:nbn:hr:149:240988
• Study programme: Title: Chemical Engineering - Undergraduate study; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka kemijskog inženjerstva (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka kemijskog inženjerstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2024-11-17 11:59:35