Matematički model postrojenja s kombiniranim ciklusom i integriranim rasplinjavanjem ugljena

master's thesis

• Title (english): Mathematical model of integrated gasification combined cycle
• Author: Matija Baborsky
• Mentor: Daniel Rolph Schneider (mentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2022-01-21, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mechanical Engineering

Abstract

S obzirom na sve veće zahtjeve minimalnih emisija prilikom proizvodnje električne energije veliki se napori i investicije ulažu na prelazak proizvodnje pomoću obnovljivih izvora energije. Taj prelazak na održivu proizvodnju će trajati određeno vrijeme. Ugljen, koji se još uvijek koristi u velikim količinama pri proizvodnji električne energije, se može iskoristiti tijekom proizvodnje na drugačiji način osim konvencionalnim izgaranjem. Jedan od načina je kombinirani ciklus s rasplinjavanjem ugljena. Rasplinjavanjem ugljena se proizvodi sintetski plin visokog tlaka i temperature. Iskorištavanjem visoke osjetne topline sintetskog plina može se proizvesti para visokog tlaka te obradom izdvojiti određena količina kiselih plinova (primarno H2S) s ciljem smanjena emisija štetnih plinova. Sintetski plin nakon obrade izgara u dimne plinove, koji prolaze kroz kombinirani ciklus (plinsko – turbinski i parno turbinski ciklus). Ovakva vrsta postrojenja se naziva kombinirani ciklus s integriranim rasplinjavanjem – IGCC (eng. Integrated Gasification Combined Cycle). IGCC postrojenje ima smanjene emisije štetnih plinova po jedinici proizvedene električne energije u usporedbi s konvencionalnim termoelektranama na ugljen što je pogodno za prijelazno razdoblje. U ovom diplomskom radu je napravljen matematički model IGCC postrojenja, optimirani su određeni parametri, provedena je simulacija rada pri različitim opterećenjima i vrstama ugljena te analizirana promjena određenih parametara koji utječu na učinkovitost postrojenja. Kao alat za modeliranje je korišten programski paket Ebsilon Professional 15.01.

Abstract (english)

Due to growing demands for minimum emissions during electricity production, great efforts and investments are being made in the transition to production using renewable energy sources. Sustainable electricity production will take some time. Coal, which is still used in large quantities in electricity production, can be used in other ways than by conventional combustion. One way is a combined cycle with coal gasification. Coal gasification produces high pressure and temperature synthetic gas. Utilization of high sensible heat of synthetic gas
can produce high pressure steam and its processing can be used to extract a certain amount of acid gases (primarily H2S) to reduce emissions. After processing, synthetic gas combusts into flue gases, which pass through a combined cycle (gas and steam cycle). This kind of power plant is called Integrated Gasification Combined Cycle – IGCC. IGCC plant has reduced harmful gas emissions per unit of produced electric energy compared to conventional coal-fired power plants, which is suitable during the transition period. In this master thesis, a mathematical model of an IGCC plant is made, certain parameters are optimized, part load work is simulated, different kind of coals are used and the change of certain parameters that affect the efficiency of the plant is analyzed. Ebsilon Professional 15.01 was used as a tool for model making.

• Keywords: Ugljen; rasplinjavanje; kombinirani ciklus; IGCC; sintetski plin; Ebsilon Professional
• Keywords (english): Coal; gasification; combined cycle; IGCC; synthesis gas; Ebsilon Professional
• Language: croatian
• URN:NBN: urn:nbn:hr:235:724142
• Study programme: Title: Mechanical Engineering; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka strojarstva (magistar/magistra inženjer/inženjerka strojarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2022-01-13 16:12:34