Novi statički mikseri za milireaktore

undergraduate thesis

• Title (english): Novel static mixers for millireactors
• Author: Domagoj Prlić
• Mentor: Domagoj Vrsaljko (mentor)
• Committee member: Domagoj Vrsaljko (predsjednik povjerenstva)
• Committee member: Jasna Prlić Kardum (član povjerenstva)
• Committee member: Aleksandra Sander (član povjerenstva)
• Granter: University of Zagreb; Faculty of Chemical Engineering and Technology; Zagreb
• Defense date and country: 2019-09-19, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Chemical Engineering

Abstract

Tržište danas zahtijeva od industrije prijelaz s masovne proizvodnje na personaliziranu proizvodnju, gdje je svaki proizvod napravljen i prilagođen svom klijentu. Samim time potreba za reaktorima velikih volumena se smanjuje, a kao potencijalna zamjena za njih na tržištu se pojavljuju milireaktori. Prostora za milireaktore ima najviše u finim industrijama kao što su farmaceutska i kemijska, jer ih odlikuje odličan prijenos tvari i topline što samo po sebi uvjetuje efikasnije i bolje iskorištene sustave. Dodatak statičkih miksera u milireaktor može rezultirati dodatnim poboljšanjem procesa. Cilj ovog rada bio je napraviti pregled statičkih miksera koji se koriste u industriji te izraditi milireaktore s konstruiranom geometrijom statičkih miksera i u njima provesti Fentonovu reakciju. Postupkom aditivne proizvodnje, stereolitografijom, izrađeni su milireaktori. Cijevni milireaktor bez statičkih miksera korišten je kao referentni, dok drugi milireaktori imaju ugrađene statičke miksere. U milireaktorima je provedena Fentonova reakcija, a iskorištenje reakcije izračunato je omjerom molarnih protoka na početku i kraju reakcije. Za vrijeme provođenja Fentonove reakcije s fiksnim vremenom zadržavanja uočen je pravilan rast konverzija s porastom vremena zadržavanja. Iskorištenje reakcije proporcionalno se povećava s duljinom trajanja reakcije što je očekivano. Bolja učinkovitost cijevnog milireaktora u odnosu na milireaktore sa statičkim mikserima uzrokovana je mrtvim volumenima zbog kojih ne dolazi do miješanja te najvjerojatnije premale stabilnosti kemikalija korištenih u reakciji.

Abstract (english)

The market today requires the industry to transition from mass production to personalized production, where every product is made and customized for its client. As a result, the need for large-volume reactors is decreasing, and millireactors are emerging as a potential replacement for them. The space for millireactors is most prevalent in fine industries such as the pharmaceutical and chemical industries, as they are characterized by excellent substance and heat transfer, which in itself conditions more efficient and better used systems. The addition of static mixers to the millireactor can result in further process improvement. The aim of this paper was to show static mixers used in industry and to create a millireactor with a constructed geometry of static mixers and conduct a Fenton reaction in them. Millireactors were fabricated by the additive manufacturing process called stereolithography. The tube millireactor without static mixers was used as a reference, while the other millireactor had static mixers installed. Fenton reaction was performed in millireactors and the yield was calculated by the ratio of molar flow rates at the beginning and end of the reaction. During the Fenton reaction with a fixed retention time, a regular increase in conversions was observed with an increase in retention time. The yield of the reaction increases proportionally with the length of the reaction as expected. The better performance of the tube millirector relative to the millireactors with static mixers is caused by dead volumes that eliminate mixing and most likely the stability of the chemicals used in the reaction is insufficient.

• Keywords: aditivna proizvodnja; stereolitografija; milireaktor; statički mikser; Fentonov proces
• Keywords (english): additive manufacturing; stereolithography; millireactor; static mixer; Fenton process
• Language: croatian
• URN:NBN: urn:nbn:hr:149:841488
• Project: Number: UIP-2014-09-3154; Title: Razvoj materijala za 3D tiskanje mikroreaktora; Title: Development of materials for 3D printing of microreactors; Acronym: 3Dmicroreactors; Leader: Domagoj Vrsaljko; Jurisdiction: Croatia; Funder: HRZZ; Funding stream: UIP
• Study programme: Title: Environmental Engineering - Undergraduate study; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka ekoinženjerstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka ekoinženjerstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2023-05-28 15:55:29