20.500.12556/DKUM-78041 Energetska optimizacija vzporedno delujočih procesov za proizvodnjo formaldehida in zmanjševanje emitiranih količin co2 doktorska disertacija Energetic optimization of parallel operating processes for production of formaldehyde and reduction in co2 emissions Doktorska disertacija obravnava energetsko optimizacijo delujočih procesov za proizvodnjo in nadaljnjo predelavo formaldehida in zmanjševanje obremenjevanja okolja s posebnim poudarkom na minimizaciji celotnih količin emitiranega CO2. Odpadni plini proizvodnega procesa pridobivanja formalina, morajo ustrezati okoljskim predpisom EU, ki bodo pričakovano zahtevali zmanjšanje vsebnosti formaldehida in hlapljivih organskih spojin. V tem cilju smo razvili dva postopka: • postopek, ki vključuje nadgradnjo obstoječih postopkov odstranjevanja formaldehida in ostalih hlapljivih organskih spojin z dodatno absorpcijsko napravo in • postopek sosežiga odpadnih plinov, ki nastanejo pri postopku pridobivanja formalina s kovinskim oksidom, z zemeljskim plinom v plinski turbini, kjer se formaldehid in hlapne organske spojine v celoti odstranijo, hkrati pe se pridobiva tudi električna energija. Računalniške simulacije smo izvedli s programskim paketom Aspen Plus, z upoštevanjem ravnotežne konstante absorbcije in reakcije nizkih koncetracij formaldehida v vodi. Ekonomske analize so potrdile, da je možno z ustrezno zasnovo vzporedno delujočih procesov znatno znižati obratovalne in fiksne stroške in emisije formaldehida v okolje zmanjšati za več kot petkrat, v primeru prve metode (srebrov katalizator) in na ničelno vrednost v primeru druge metode (kovinskooksidni katalizator). The doctoral dissertation deals with the energy optimization of operating processes for the production and further processing of formaldehyde and the reduction of the burden on the environment, with special emphasis on the minimization of total amounts of emitted CO2. Waste gases from the production process of formalin production must comply with EU environmental regulations, which are expected to require a reduction in the content of formaldehyde and volatile organic compounds. In this goal, we have developed two methods: • a process involving the upgrading of existing processes for the removal of formaldehyde and other volatile organic compounds with an additional absorption device, and • the process of co-incineration of waste gases generated in the process of obtaining formalin with metal oxide, with natural gas in a gas turbine, where formaldehyde and volatile organic compounds are completely removed, while electricity is also obtained. Computer simulations were performed with the Aspen Plus software package, taking into account the equilibrium absorption constant and the reaction of low formaldehyde concentrations in water. Economic analyzes have confirmed that it is possible to significantly reduce operating and fixed costs and reduce formaldehyde emissions by more than five times in the case of the first method (silver catalyst) and to zero in the case of the second method (metal oxide catalyst). proizvodnja formalina formaldehid odpadni industrjski plini proizvodnja energije ekologija emisije CO2 formalin production formaldehyde industrial waste gases energy production ecology CO2 emissions true true false [J. Mirsics] Slovenski jezik Angleški jezik Doktorsko delo/naloga 2020-10-09 11:08:39 2021-03-29 07:56:11 2022-08-09 17:30:34 2020-10-15 03:31:04 2020 0 Maribor 0 Maribor X, 67 f. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 628.237:502/504(043.3) 57516035 URN:SI:UM:DK:ZECMWHML DOK_Mursics_Jozsef_2021.pdf DOK_Mursics_Jozsef_2021.pdf 1 EC47CF9E1796486EBB8115A93E64C292 d4988ac1560c8a48617236387fcc7884deca1abb418e089bd2f91341f78f4cc1 d72def2a-8308-11eb-b083-00155d0001ca 20.500.12556/dkum/7bd9b5ce-49e1-4381-ab14-b3275c6c54f0 https://dk.um.si/Dokument.php?lang=slv&id=149317 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0