20.500.12556/DKUM-99741 Simulacija katalitske dehidracije metanola za proizvodnjo dimetil etra Simulation of catalytic methanol dehydration for dimethyl ether production Dimetil eter je pomembna kemijska spojina s široko uporabo v kemijski industriji. Ena izmed uveljavljenih poti njegove proizvodnje je katalitska dehidracija metanola, pri kateri imajo izbira katalizatorja in obratovalni pogoji pomemben vpliv na potek procesa. Z uporabo procesnih simulacij je mogoče analizirati vpliv posameznih obratovalnih parametrov ter oceniti možnosti za izboljšanje procesne in energijske učinkovitosti. Cilj diplomskega dela je bil v programskem okolju Aspen Plus izdelati simulacijski model katalitske dehidracije metanola za proizvodnjo dimetil etra. Izdelali smo dva procesna modela, pri čemer je prvi predstavljal osnovno procesno shemo, drugi pa procesno shemo s toplotno integracijo. Za opis reakcije smo uporabili cevni reaktor RPlug s kinetičnim modelom Berčiča in Levca. Analizirali smo temperaturni, tlačni in koncentracijski profil vzdolž reaktorja. Z analizo občutljivosti smo ovrednotili vpliv temperature in tlaka na pretvorbo metanola ter izvedli energijsko analizo obeh procesnih modelov. Ugotovili smo, da se je pri tlaku 10 bar z zvišanjem temperature z 260 na 295 °C pretvorba metanola povečala s približno 78,0 % na 82,1 %, pri nadaljnjem zvišanju temperature pa ni prišlo do znatne spremembe. Pri temperaturi 280 °C se je z zvišanjem tlaka z 8 na 12 bar pretvorba zmanjšala z 82,3 % na 80,4 %. Vpliv tlaka je bil izrazitejši pri nižjih temperaturah, pri višjih temperaturah pa so se razlike v pretvorbi zmanjšale. Z uvedbo toplotne integracije smo skupno porabo energije zmanjšali z 32,51 MW na 30,65 MW, kar predstavlja zmanjšanje za približno 5,7 %. Dimethyl ether is an important chemical compound with a wide range of applications in the chemical industry. One of the established routes for its production is the catalytic dehydration of methanol, in which the choice of catalyst and operating conditions has a significant influence on the process. Process simulations make it possible to analyse the effects of individual operating parameters and assess opportunities for improving process and energy efficiency. The aim of this bachelor’s thesis was to develop a simulation model of the catalytic dehydration of methanol for dimethyl ether production in Aspen Plus. Two process models were developed: the first represented the basic process configuration, while the second represented a process configuration with heat integration. The reaction was modelled using an RPlug tubular reactor and the kinetic model developed by Berčič and Levec. The temperature, pressure, and concentration profiles along the reactor were analysed. A sensitivity analysis was used to evaluate the effects of temperature and pressure on methanol conversion, and an energy analysis of both process models was performed. The results showed that, at a pressure of 10 bar, increasing the temperature from 260 °C to 295 °C increased methanol conversion from approximately 78.0% to 82.1%, while a further increase in temperature did not result in any significant change. At a temperature of 280 °C, increasing the pressure from 8 bar to 12 bar decreased the conversion from 82.3% to 80.4%. The effect of pressure was more pronounced at lower temperatures, while the differences in conversion decreased at higher temperatures. By introducing heat integration, the total energy consumption was reduced from 32.51 MW to 30.65 MW, representing a reduction of approximately 5.7%. dimetil eter katalitska dehidracija metanol Aspen Plus procesna simulacija dimethyl ether catalytic dehydration methanol Aspen Plus process simulation true true false Slovenski jezik Angleški jezik Diplomsko delo/naloga 2026-08-25 15:26:18 2026-09-16 09:32:18 2026-09-17 03:10:56 0000-00-00 00:00:00 2026 0 Maribor 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 VS_Lojen_Anja_2026.pdf VS_Lojen_Anja_2026.pdf 1 65699FA2721806FBCFCC60282AB511C3 a389429da772bd17e8d134d631a15ecfa76a6be4bdf062e03cbc652f65cd333b 6bedb174-af9d-11f1-873a-00155d0001be https://dk.um.si/Dokument.php?lang=slv&id=212295 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0