SINTEZA MEŠANE PROZIVODNJE BIOGORIV

Dretar, Rok

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Title:	SINTEZA MEŠANE PROZIVODNJE BIOGORIV
Authors:	ID Dretar, Rok (Author) ID Kravanja, Zdravko (Mentor) More about this mentor... ID Čuček, Lidija (Comentor)
Files:	UN_Dretar_Rok_2015.pdf (1,50 MB) MD5: 370C13327807152E0F4222F1B1A430F8
Language:	Slovenian
Work type:	Bachelor thesis/paper
Typology:	2.11 - Undergraduate Thesis
Organization:	FKKT - Faculty of Chemistry and Chemical Engineering
Abstract:	Namen diplomske naloge je ugotoviti morebitne prednosti hkratne toplotno integrirane proizvodnje biodizla in bioetanola. Preučevali smo proizvodnjo bioetanola z uplinjanjem koruzne slame in nadaljnjo fermentacijo sinteznega plina in pridelavo biodizla s homogeno bazično katalizo olja oljne repice brez predpriprave. Optimizacijo proizvodnje biodizla smo izvedli na podlagi vnaprej pripravljenih modelov s programskim paketom GAMS z manjšimi spremembami. Dobiček smo preučevali pri letni proizvodnji 20 000 ton in 40 000 ton biodizla pri različnih stopnjah toplotne integracije tako znotraj procesa kot tudi med procesoma. Proizvodnjo bioetanola smo optimizirali s programskim paketom MIPSYN pri 40 000 ton letno. Za analizo toplotne integracije smo uporabili program TransGen, s katerim smo preučili razlike v stroških pogonskih sredstev glede na stopnjo toplotne integracije s pesimistično oceno cen pogonskih sredstev. Končni rezultati so pokazali velike prihranke pri toplotno integriranih procesih v primerjavi s toplotno neintegriranimi procesi. V primeru procesa proizvodnje bioetanola je toplotna integracija znotraj samega procesa zmanjšala stroške pogonskih sredstev za 90 % in v primeru proizvodnje biodizla za 46 %. Toplotna integracija znotraj procesa je stroške še dodatno zmanjšala, vendar je bilo za preboj potrebno za doseganje dobičkonosnosti v proces vključiti cenejša pogonska sredstva. Rezultati so tudi pokazali, da je medprocesna toplotna integracija stroške pogonskih sredstev še dodatno zmanjšala, in sicer za majn kot 7 % pri kapaciteti proizvodnje biodizla 20 000 t/a, in za majn kot 8 % pri kapaciteti proizvodnje biodizla 40 000 t/a. Proizvodnja bioetanola je v obeh primerih potekala pri kapaciteti 40 000 t/a.
Keywords:	biodizel, bioetanol, matematično programiranje, toplotna integracija
Place of publishing:	Maribor
Publisher:	[R. Dretar]
Year of publishing:	2015
PID:	20.500.12556/DKUM-54604
UDC:	[604.2:661.722]:519.85(043.2)
COBISS.SI-ID:	19438358
NUK URN:	URN:SI:UM:DK:PDYYNZSU
Publication date in DKUM:	21.10.2015
Views:	1535
Downloads:	107
Metadata:
Categories:	KTFMB - FKKT
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Secondary language

Language:	English
Title:	SYNTHESIS OF MIXED PRODUCTION OF BIOFUELS
Abstract:	The purpose of this study was to analyse the economic performances of biodiesel and bioethanol production processes whilst performing heat integration. Bioethanol was produced through gasification of maize stover and subsequent fermentation of the generated syngas into bioethanol. Biodiesel was produced using homogeneous alkaline catalysis from rapeseed oil without pre-treatment. Optimisation of the biodiesel production was carried out using previously formulated models with minor changes by using the ‘GAMS’ software package. Profits were studied for biodiesel production at capacity of 20 000 t/y and 40 000 t/y at different stages of integration, between processes and within each process itself. Production of biodiesel was optimised using the software package ‘MIPSYN’ by fixed production at 40 000 t/y. The software tool ‘TransGen’ was used for heat integration. We then studied the differences in utility costs according to the degree of heat integration, utilising a pessimistic assessment of utility prices. The final results showed significant savings when integrating the processes versus non-heat integrated processes. In the case of bioethanol production, the utility cost was reduced by 90 %, and in the case of biodiesel production by 46 %. Heat integration within the process reduced utility cost significantly, however for the processes to be profitable, it was necessary to include cheaper utilities besides high pressure steam and cooling water. The results have also demonstrated that when heat integration was performed between the processes, rather than merely within the individual processes, the cost of utilities was additionally reduced. The reduction amounted to less than 7 % for biodiesel production with a capacity of 20 000 t/y, and less than 8 % for biodiesel production with capacity of 40 000 t/y. The capacity of ethanol production was 40 000 t/y, in both cases.
Keywords:	biodiesel, bioethanol, matematical programming, heat integration

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