Ispitivanje sustava Mn-Al-Zn-oksida kao sorbensa za primjenu u procesu visoko-temperaturne desulfurizacije plina

master's thesis

• Title (english): The feasibility of Mn-Al-Zn-oxide sorbents for high-temperature gas desulfurization process
• Author: Amanda Čavar
• Mentor: Vilko Mandić (mentor)
• Committee member: Vilko Mandić (predsjednik povjerenstva)
• Committee member: Stanislav Kurajica (član povjerenstva)
• Committee member: Krunoslav Žižek (član povjerenstva)
• Granter: University of Zagreb; Faculty of Chemical Engineering and Technology; Zagreb
• Defense date and country: 2019-09-23, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Chemical Engineering

Abstract

Sumporovodik (H2S) je bezbojni plin karakterističnog neugodnog mirisa po pokvarenim jajima te je vrlo otrovan, kiseo, korozivan i zapaljiv. S obzirom na ekološku neprihvatljivost i korozivnost, njegovo uklanjanje je od posebnog interesa u sustavima za proizvodnju energije, kao što je kombinirani proces s integriranim uplinjavanjem (IGCC). Naime, pri prevođenju ugljena u sintetski plin nastaju određene količine sumporovodika te potencijalno uzrokuju koroziju uređaja, utječu na njihov radni vijek i pouzdanost. Uspješno uklanjanje sumpornih spojeva iz sintetskog plina (visokotemperaturna desulfurizacija plina) moguće je postići upotrebom sorbensa na bazi mješovitih metalnih oksida koji će reagirati sa sumporovodikom da bi se formirao odgovarajući metalni sulfid. U ovom radu istražena su svojstva Mn – Al – Zn – oksida koji su pripravljeni sol – gel metodom. Ispitana termička, strukturna i morfološka svojstva trebala bi omogućiti identifikaciju primjerenog sastava za optimalnu sorpciju sumporovodika kao i regeneraciju sorbensa i kvantificirati efikasnost sorbensa.

Abstract (english)

Hydrogen sulfide is a colourless gas with characteristic odour of rotten eggs and it is highly toxic, acidic, corrosive and flammable. Having in mind it is ecologically unacceptable and corrosive, its removal from energy production systems, such as integrated gasification combined cycle (IGCC) is especially interesting. Namely, coal combustion generates syngas containing hydrogen sulfide which can cause corrosion of devices and, in turn, affect their reliability and life cycle. Successful removal of sulfur compounds from syngas (High Temperature Gas Desulfurization) can be achieved by using mixed metal oxide sorbents that react with hydrogen sulfide, forming a corresponding metal sulfide. In this work, the properties of Mn – Al – Zn – oxide, prepared by sol – gel method, were investigated. The investigated thermal, structural and morphological properties should allow identification of the appropriate composition to adsorb hydrogen sulphide from the syngas and regenerate the sorbents as well as quantification of the process efficiency.

• Keywords: visokotemperaturna desulfurizacija; sorbensi; sumporovodik; Mn-Al-Zn-oksidi
• Keywords (english): high-temperature desulfurization; sorbents; hydrogen sulfide; Mn-Al-Zn-oxide
• Language: croatian
• URN:NBN: urn:nbn:hr:149:039135
• Study programme: Title: Materials Science and Engineering - Graduate study; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka kemijskog inženjerstva (magistar/magistra inženjer/inženjerka kemijskog inženjerstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2022-02-16 14:16:52