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Statements

Subject Item
n2:RIV%2F62243136%3A_____%2F11%3A%230000222%21RIV12-MPO-62243136
rdf:type
n14:Vysledek skos:Concept
rdfs:seeAlso
http://www.ecce2011.de/ECCE/Congress+Planner/Datei_Handler-tagung-535-file-7798-p-108.html
dcterms:description
Nowadays hydrogen demand caused by deep fuel refining and the other sustainable processes leads to utilization of new raw materials. Simultaneously, extensive biodiesel production creates great amount of biomass wastes transcendent over feeding potential of farm animals. One of potentially useful process of hydrogen production from renewable natural sources seems to be partial oxidation (POX) and gasification of biomass material like rape meal from rape oil production. The goal of this work was to develop model of experimental POX reactor located in pilot plant unit of UNIPETROL RPA working with rape meal and fuel oil mixture. Mathematical model consists of two parts. First simulation model was created in process simulator Aspen Plus in form of pseudohomogeneous CSTR to fit reaction kinetics and equilibrium on experimental data. Second CFD simulation model was developed in COSOL Multiphysics (PDE solver by finite element method) to find steady state gas velocity, temperature and concentration profiles inside of gasification reactor. Complicated chemical composition was solved by concept of representative chemical compounds resulting in the same elemental composition as the original raw material. Hydrogen production depends both on oxygen and water steam ratio to biomass and hydrocarbon raw material mixture and also on flow characteristic and internal mixing in the reactor. Distribution of residence time of biomass particles in the reactor affects results due to different rate of consecutive reaction steps: pyrolysis, water gas shift and steam reforming reactions. CFD modeling can help to understand complex phenomena in the reactor. Nowadays hydrogen demand caused by deep fuel refining and the other sustainable processes leads to utilization of new raw materials. Simultaneously, extensive biodiesel production creates great amount of biomass wastes transcendent over feeding potential of farm animals. One of potentially useful process of hydrogen production from renewable natural sources seems to be partial oxidation (POX) and gasification of biomass material like rape meal from rape oil production. The goal of this work was to develop model of experimental POX reactor located in pilot plant unit of UNIPETROL RPA working with rape meal and fuel oil mixture. Mathematical model consists of two parts. First simulation model was created in process simulator Aspen Plus in form of pseudohomogeneous CSTR to fit reaction kinetics and equilibrium on experimental data. Second CFD simulation model was developed in COSOL Multiphysics (PDE solver by finite element method) to find steady state gas velocity, temperature and concentration profiles inside of gasification reactor. Complicated chemical composition was solved by concept of representative chemical compounds resulting in the same elemental composition as the original raw material. Hydrogen production depends both on oxygen and water steam ratio to biomass and hydrocarbon raw material mixture and also on flow characteristic and internal mixing in the reactor. Distribution of residence time of biomass particles in the reactor affects results due to different rate of consecutive reaction steps: pyrolysis, water gas shift and steam reforming reactions. CFD modeling can help to understand complex phenomena in the reactor.
dcterms:title
Simulation of hydrogen production by biomass partial oxidation Simulation of hydrogen production by biomass partial oxidation
skos:prefLabel
Simulation of hydrogen production by biomass partial oxidation Simulation of hydrogen production by biomass partial oxidation
skos:notation
RIV/62243136:_____/11:#0000222!RIV12-MPO-62243136
n14:predkladatel
n17:ico%3A62243136
n4:aktivita
n18:P
n4:aktivity
P(2A-2TP1/024)
n4:dodaniDat
n12:2012
n4:domaciTvurceVysledku
n10:8296790 n10:7815255
n4:druhVysledku
n16:O
n4:duvernostUdaju
n6:S
n4:entitaPredkladatele
n7:predkladatel
n4:idSjednocenehoVysledku
229443
n4:idVysledku
RIV/62243136:_____/11:#0000222
n4:jazykVysledku
n13:eng
n4:klicovaSlova
hydrogen production, biomass, fuel refining, biodiesel, partial oxidation
n4:klicoveSlovo
n5:biomass n5:biodiesel n5:fuel%20refining n5:partial%20oxidation n5:hydrogen%20production
n4:kontrolniKodProRIV
[D40BCBEE211C]
n4:obor
n8:CI
n4:pocetDomacichTvurcuVysledku
2
n4:pocetTvurcuVysledku
5
n4:projekt
n9:2A-2TP1%2F024
n4:rokUplatneniVysledku
n12:2011
n4:tvurceVysledku
Kovač, Dušan Hanika, Jiří Lederer, Jaromír Veselý, Václav Tukač, Vratislav