Modeliranje uplinjanja biomase

Pikš, Klemen (author), Senegačnik, Andrej (mentor)

Uplinjanje predstavlja obetavno tehnologijo pretvorbe biomase v visokokalorični plin, ki se lahko uporablja za ogrevanje, proizvodnjo elektrike ali kot osnova za proizvodnjo koristnih kemikalij. Zaradi zapletenosti procesa se je pojavila potreba po matematičnih modelih uplinjanja, ki simulirajo uplinjanje pri različnih vstopnih parametrih brez dragih in časovno zamudnih eksperimentov. V pričujočem magistrskem delu je predstavljen model uplinjanja biomase z uporabo termodinamičnega ravnovesja, ki podaja sestavo nastalega plina, njegovo kurilnost in izkoristek procesa na podlagi elementne analize biomase in temperature uplinjanja. Rezultate modela smo primerjali z eksperimentalno pridobljenimi rezultati iz literature in pokazali dobro ujemanje v sestavi sinteznega plina. Ugotovili smo, da obstaja optimalna temperatura uplinjanja, pri kateri dosežemo najvišji izkoristek procesa. Vlažnost biomase predstavlja problem pri uplinjanju, saj znižuje izkoristek in kurilnost plina. Ravno obratno velja za tlak v reaktorju, kjer se z višanjem izboljšata izkoristek in kurilnost.

• Language: Slovenian
• Keywords: uplinjanje, biomasa, termodinamično ravnovesje, sintezni plin, modeliranje, piroliza, obnovljivi viri energije
• Work type: Master's thesis/paper
• Typology: 2.09 - Master's Thesis
• Organization: FS - Faculty of Mechanical Engineering
• Place of publishing: Ljubljana
• Publisher: [K. Pikš]
• Year: 2022
• Number of pages: XXVI, 66 str.
• PID: 20.500.12556/RUL-137012
• UDC: 662.63:620.92(043.2)
• COBISS.SI-ID: 109629699
• Publication date in RUL: 28.05.2022

PIKŠ, Klemen, 2022, Modeliranje uplinjanja biomase [online]. Master’s thesis. Ljubljana : K. Pikš. [Accessed 26 April 2025]. Retrieved from: https://repozitorij.uni-lj.si/IzpisGradiva.php?lang=eng&id=137012

Secondary language

• Language: English
• Title: Biomass gasification modeling

Abstract

Gasification represents a promising technology for conversion of biomass into a high-calorie gas that can be used for heating, electricity generation or production of other useful chemicals. Due to the complexity of the process, there is a need for mathematical models that can predict the gasification products without expensive and time-consuming experiments. This paper presents a thermodynamic equilibrium model of biomass gasification, which predicts the composition of syngas, its lower heating value and process efficiency based on the composition of biomass and gasification temperature. The model results were compared with experimentally obtained data from literature and showed good agreement regarding the composition of the syngas. We found that there is an optimal gasification temperature at which we achieve the highest process efficiency. Moisture of biomass is a problem for gasification because it reduces the efficiency and calorific value of gas. The opposite is true for reactor pressure, which improves efficiency and calorific value as it rises.

• Keywords: gasification, biomass, thermodynamic equilibrium, syngas, modeling, pyrolysis, renewable energy sources