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MINLP optimiranje procesov proizvodnje bioetanola s procesnim sintetizerjem MIPSYN [Elektronski vir]Čuček, Lidija ; Kravanja, ZdravkoV prispevku opisujemo optimirane procese za proizvodnjo etanola s superstrukturnim pristopom iz različnih surovin, ki vsebujejo škrob, sladkor in/ali lignocelulozo. Superstrukture procesov smo ... modelirali kot mešano-celoštevilske nelinearne programirne (MINLP) probleme, ki vsebujejo tako diskretne (optimiranje topologije oz. strukture) kot zvezne spremenljivke(optimiranje obratovalnih pogojev in dimenzij naprav). Za optimiranje smo uporabili enačbno-orientiran procesni sintetizer MIPSYN, v katerem so uporabljene tehnike in strategije MINLP. Kriterij optimiranja, definiran z namensko funkcijo, je maksimiranje letnega dobička. Sinteze procesov smo izvedli brez in s sočasno izvedeno toplotno integracijo. Predpostavili smo kontinuirne procese z 8500 ur letnega obratovanja in masnim tokom posamezne surovine, qm = 18 kg/s. Največjo proizvodno kapaciteto etanola smo dobili pri procesu proizvodnje iz koruze, in sicer malo več kot 225 106 L/leto. Izkoristek procesa znaša približno 38 %. Tudi ekonomsko se najbolj izplača pridobivati etanol iz škrobnih surovin, torej iz tistih, ki so namenjene prehrani, zaradi relativno visokega donosa in tudi doba vračanja je kratka. Procesi iz lignoceluloznih materialov zahtevajo visoko investicijo in trenutno še niso povsem rentabilni.Source: Slovenski kemijski dnevi 2009, Maribor, 24. in 25. september 2009 [Elektronski vir] (14 str.)Type of material - conference contributionPublish date - 2009Language - slovenianCOBISS.SI-ID - 13471766
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Čuček, Lidija | 30944 |
Kravanja, Zdravko | 06005 |
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