20.500.12556/DKUM-96603 Proizvodnja metanola z/brez obtoka sinteznega plina diplomsko delo visokošolskega strokovnega študijskega programa I. stopnje Methanol production with/without the synthesis gas circulation Proizvodnja metanola z/brez obtoka sinteznega plina Povzetek V diplomskem delu smo proučevali vpliv različnih obratovalnih strategij na učinkovitost procesa sinteze metanola. Namen našega dela je bil določiti optimalne procesne pogoje, ki omogočajo največjo proizvodnjo metanola ter zagotavljajo ekonomsko najbolj upravičeno obratovanje. S simulacijskim orodjem Aspen Plus smo razvili model procesne sheme, s katerim smo preučili obnašanje sistema pri različnih deležih obtoka nezreagiranega sinteznega plina ter pri različnih temperaturah in tlakih v metanolnem reaktorju. V prvem delu smo analizirali spremembe proizvodnje metanola in stranskega produkta vodika v odvisnosti od deleža obtoka v celotnem območju med 0 in 1. Rezultati so pokazali, da največ metanola nastane pri 80 % obtoku, medtem ko je obratovanje pri 100 % obtoku zaradi volumske omejitve procesa neizvedljivo. Nadalje smo ocenili vpliv temperature in tlaka v reaktorju ter ugotovili, da ima temperatura izrazito večji vpliv na nastanek produktov kot tlak. Optimalno temperaturno okno okoli 230 °C omogoča največjo proizvodnjo metanola, medtem ko višje temperature močno zmanjšajo njegovo nastajanje in povečajo delež vodika. V zaključnem delu smo izvedli ekonomsko analizo scenarijev brez obtoka in z 80 % obtokom. Čeprav je bil letni prihodek od prodaje vodika pri obtoku nižji, je skupni letni prihodek procesa z 80 % obtokom za skoraj milijon EUR presegal skupni letni prihodek procesa brez obtoka. Ključni razlog je znatno višja tržna cena metanola glede na vodik. Povzeta ključna spoznanja tega dela potrjujejo, da pravilno izbran delež obtoka bistveno vpliva na energetsko, tehnološko in ekonomsko učinkovitost proizvodnje metanola. This thesis examines the impact of different operational strategies on the efficiency of the methanol synthesis process. The aim of the work was to determine the optimal process conditions that enable the highest methanol production while ensuring the most economically justified operation. Using the simulation tool Aspen Plus, we developed a process model with which we studied system’s behaviour at various recycle ratios of unreacted synthesis gas as well as at different temperatures and pressures in the methanol reactor. In the first part, we analysed changes in methanol production and the formation of hydrogen as a by-product depending on the recycle ratio across the entire range from 0 to 1. The results showed that the highest methanol production occurs at an 80 % recycle ratio, whereas operation at 100 % recycle is not feasible due to volumetric limitations of the process. We further evaluate the influence of reactor temperature and pressure and found that temperature has a significantly stronger impact on product formation than pressure. An optimal temperature window around 230 °C provides the highest methanol production, while higher temperatures drastically reduce its formation and increase the hydrogen fraction. In the final part, we performed an economic analysis of the scenarios without recycle and with an 80 % recycle ratio. Although the annual revenue from hydrogen sales was lower in the recycle scenario, the total annual revenue of the process with 80 % recycle exceeded that of the process without recycle by nearly one million EUR. The main reason is the substantially higher market price of methanol compared to hydrogen. The key findings of this work confirm that a properly selected recycle ratio significantly influences the energy, technological and economic performance of methanol production. metanol obtok sintezni plin trdni komunalni odpadki Aspen Plus methanol circulation syngas solid municipal waste Aspen Plus true true false [N. Platovšek Košir] Slovenski jezik Angleški jezik Diplomsko delo/naloga 2026-01-20 12:51:04 2026-02-26 11:51:14 2026-02-28 03:15:56 0000-00-00 00:00:00 2026 0 Maribor 0 Maribor 1 spletni vir (1 datoteka PDF (VIII, 23 str.)) 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 666.721(043.2) 269844483 VS_Platovsek_Kosir_Nina_2026.pdf VS_Platovsek_Kosir_Nina_2026.pdf 1 EB07DE2D8794C2F9A36BB497DDCBC54C 9a18bce7252b4e3d894919adee703178fea4dc4517cbac52ffb49873a250feca 2960d2df-013c-11f1-bf34-00155d581219 https://dk.um.si/Dokument.php?lang=slv&id=203028 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0