Simulacija katalitske dehidracije metanola za proizvodnjo dimetil etra

Lojen, Anja

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Title:	Simulacija katalitske dehidracije metanola za proizvodnjo dimetil etra
Authors:	ID Lojen, Anja (Author) ID Nemet, Andreja (Mentor) More about this mentor... ID Hren, David Tian (Comentor)
Files:	VS_Lojen_Anja_2026.pdf (2,96 MB) MD5: 65699FA2721806FBCFCC60282AB511C3
Language:	Slovenian
Work type:	Bachelor thesis/paper
Typology:	2.11 - Undergraduate Thesis
Organization:	FKKT - Faculty of Chemistry and Chemical Engineering
Abstract:	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 %.
Keywords:	dimetil eter, katalitska dehidracija, metanol, Aspen Plus, procesna simulacija
Place of publishing:	Maribor
Year of publishing:	2026
PID:	20.500.12556/DKUM-99741
Publication date in DKUM:	16.09.2026
Views:	88
Downloads:	3
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Categories:	KTFMB - FKKT
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Licences

License:	CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International

Link:	http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:	The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
Licensing start date:	25.08.2026

Secondary language

Language:	English
Title:	Simulation of catalytic methanol dehydration for dimethyl ether production
Abstract:	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%.
Keywords:	dimethyl ether, catalytic dehydration, methanol, Aspen Plus, process simulation

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