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Uporaba glicerola kot goriva za turbinske motorje
Pavalec, Klemen (Author), Katrašnik, Tomaž (Mentor) More about this mentor... This link opens in a new window

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Abstract
Proizvodnja glicerola, kot stranskega produkta proizvodnje biogoriva I. generacije, biodizla, se je v zadnjih letih izrazito povečala. V masnem deležu predstavlja približno 10 % proizvoda, kar v svetovnem merilu predstavlja več kot 3 milijone ton glicerola letno s ceno 0,05 €/kWh. V diplomski nalogi je analizirano zgorevanje glicerola v eksperimentalnem turbinskem motorju, saj glicerol potencialno predstavlja cenovno dostopno biogorivo. Ker je glicerol medij z visoko viskoznostjo in visoko vsebnostjo kisika, njegova uporaba v turbinskih motorjih, v katerih se navadno uporablja goriva z nižjo viskoznostjo, predstavlja veliko tehničnih izzivov. V delu so predstavljene tehnične rešitve, ki so bile opravljene na motorju za doseganje uspešnega zgorevanja. Predstavljene so tudi prednosti uporabe takšnega goriva. Izmerjeni so bili zelo nizki izpusti NOx in PM, kar pozitivno vpliva na okolje in je posledica visoke vsebnosti kisika v gorivu. Izpusti CO in THC so bili zaradi manj primernih kemijsko-fizikalnih lastnosti glicerola relativno visoki, vendar njihove vrednosti padajo z višanjem temperature vstopnega zraka in temperature pred turbino. Na podlagi podatkov iz dostopne literature je bilo dodatno ocenjeno, da bi bilo potrebno v primeru uporabe v turbinskih motorjih, surovi glicerol rafinirati do stopnje, na kateri ne bi vseboval sledi anorganskih katalizatorjev, ki bi v nasprotnem primeru povzročali poškodbe vročih komponent in posledično znatno znižali življenjsko dobo motorja.

Language:Slovenian
Keywords:mikro plinske turbine, viskozna biogoriva, zgorevanje, glicerol, izpusti škodljivih plinov, izpusti delcev
Work type:Bachelor thesis/paper (mb11)
Organization:FS - Faculty of Mechanical Engineering
Year:2018
Views:321
Downloads:136
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Secondary language

Language:English
Title:Use of glycerol as a fuel for turbine engines
Abstract:
The production of glycerol as a by-product of the production of biodiesel, which is biofuel of the 1st generation, has increased markedly in recent years. It represents about 10 % of the product weight, which worldwide amounts to than 3 million tons of glycerol per year at a price of 0.05 € / kWh. The thesis analyzes the combustion of glycerol in an experimental turbine engine as it potentially represents an affordable biofuel. Since glycerol is a medium with high viscosity and high oxygen content, its use in turbine engines, typically designed for fuels with a lower viscosity, introduces major technical challenges. The thesis thus presents required technical solutions for achieving successful combustion while using glycerol. Very low NOx and PM emissions were measured due to the high oxygen content of the fuel, which positively affects the suppression of listed species. The CO and THC emissions were relatively high due to the less favourable chemical-physical properties of the glycerol, but could be reduced by increasing the temperature of primary air or turbine inlet temperature. Based on literature survey it is further anticipated that, in the case of use in turbine engines, crude glycerol should be refined to remove traces of inorganic catalysts which would otherwise cause corrosion and consequently significantly reduce the service life of the engine.

Keywords:micro gas turbine, viscous biofuels, combustion, glycerol, emissions of harmful gases, particulate emissions

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