PRODUCTION OF METHANOL AND GASOLINE FROM CARBON DIOXIDE

Cilj diplomske naloge je predstavitev dveh tehnološko zahtevnih tehnologij procesa sinteze metanola in tehnologije procesa sinteze bencina. Pri obeh predstavljenih procesih sinteze metanola se je z namenom recikliranja ogljika kot osnovno surovino uporabilo stehiometrijsko določeno razmerje zmesi ogljikovega dioksida in vodika, za sintezo bencina pa se je uporabil proizvedeni metanol. Prva tehnologija proizvodnje metanola je direktna sinteza iz ogljikovega dioksida in vodika, med tem ko ima drugi sintezni postopek dve fazi. V prvi fazi se ogljikov dioksid delno presnovi v ogljikov monoksid (RWGS reakcija), nato se v drugi fazi proizvaja metanol. Izvedena je tudi ekonomska, energetska in tehnološka primerjava obeh procesov proizvodnje metanola. Pri simulaciji obeh sinteznih postopkov s programskim paketom Aspen Plus je bilo upoštevanih nekaj računskih modelov in predpostavk. V drugem delu diplomske naloge pa je predstavljen postopek sinteze bencina iz metanola. Proces sinteze bencina iz metanola je znan kot MTG proces, za katerega je izvedena tudi analiza ekonomske in energetske učinkovitosti.The aim of this diploma work is to present two technologically advanced technologies for methanol production, and one technology for gasoline production. With the aim of carbon recycling the stoichiometric ratio of CO2 and H2 was used as the raw material in both of the discussed processes for the production of methanol. The produced methanol was further used for the production of gasoline. The first methanol production technology includes direct synthesis of methanol from CO2 and H2, meanwhile the second production technology has two steps. During the first step CO2 is partially converted into CO via RWGS reaction, and methanol is produced during the second step. A comparison between these two methods was made in terms of economic, technological, and energy-efficiency bases. Some computational models and assumptions were taken into consideration for the simulation of both production processes using Aspen Plus program package. The gasoline synthesis process, using methanol as starting raw material is presented in the second part of the diploma work. The process is known as MTG process. Furthermore, the energy-efficiency and economic analysis was also done for this process