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Uporaba zgoščenih fluoriranih ogljikovodikov v visokotlačnih procesih [Elektronski vir]
Perva, Amra ; Škerget, Mojca ; Knez, Željko
Prispevek opisuje uporabo zgoščenih fluoriranih ogljikovodikov, in sicer trifluorometana (CHF3, R23), 1,1,1,2-tetrafluorometana (CH2FCF3, R134a) in 1,1,1,3,3,3-heksafluoropropana (CF3CH2CF3, R236fa) ...v raziskavah visokotlačnih faznih ravnotežij in za pridobivanje finih delcev z visokotlačno mikronizacijo. Omenjeni fluorirani ogljikovodiki, takoimenovani F-plini, so novi industrijski plini, ki nadomeščajo ozonu škodljive snovi kot so naprimer klorofluoroogljikovodiki in delno halogenirani klorofluoroogljikovodiki. So nevnetljivi, netoksični plini in se uporabljajo večinoma kot hladilna in gasilna sredstva. Imajo zanemarljiv toplogredni potencial in podobne termodinamske lastnosti kot prepovedani ozonu škodljivi toplogredni plini. Prikazana bodo fazna ravnotežja za sisteme o-vanilin (o-hidroksi-m-metoksibenzaldehid) - ogljikov dioksid oziroma R23, R134a in R236fa ter rezultati mikronizacij o-vanilina z omenjenimi zgoščenimi plini s PGSSr postopkom.
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