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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Uticaj procesnih parametara na pirolizu i gasifikaciju otpadnih automobilskih pneumatika / Investigation of the influence of process parameters on the pyrolysis and gasification of waste automotive tires

Milotić Milan 21 April 2015 (has links)
<p style="text-align: justify;">U disertaciji je prikazan matematički model<br />gasifikacije otpadnih automobilskih pneumatika.<br />Modelom je istražen uticaj količine ubačenog vazduha<br />i vodene pare u gasifikator i temperatura gasifikacije<br />na prinos gasovitih produkata. Numerička procedura<br />je rije&scaron;ena Newton-Raphson metodom a brojne<br />vrijednosti molskih udjela gasovitih komponenata u<br />ravnotežnoj mje&scaron;avini dobijene su kori&scaron;ćenjem<br />programskog jezika C.<br />U drugom dijelu disertacije prikazano je<br />eksperimentalno ispitivanje pirolize otpadnih<br />automobilskih pneumatika. Eksperimentalni rezultati<br />ukazuju da na prinos gasa, odnosno na prinos čvrstog<br />(koksnog) ostatka značajno utiču parametri: veličina<br />čestice otpadne gume, temperatura pirolize i brzina<br />zagrijavanja uzorka.</p> / <p>The dissertation presents a mathematical model of<br />gasification of waste automotive tires. The model<br />examined the impact of the amount of the loaded air and<br />water vapor in the gasifier and gasification temperature<br />to yield gaseous products. The numerical procedure is<br />resolved Newton-Raphson method and the numerical<br />values of mole portions of gaseous components in the<br />equilibrium mixture obtained using the programming<br />language C.<br />In the second part of the thesis is shown<br />experimentally testing pyrolysis of waste automotive<br />tires. Experimental results indicate that the yield of gas,<br />or to yield a solid (coke) significantly affect the rest of the<br />parameters: the size of the particles of waste rubber<br />pyrolysis temperature and heating rate of the sample.</p>
2

Uticaj procesnih parametara na pirolizu i gasifikaciju oklaska kukuruza / Influence of process parameters on the pyrolysis and gasification of corncob

Ćeranić Mirjana 17 November 2015 (has links)
<p>U doktorskoj disertaciji vr&scaron;eno je ispitivanje procesa pirolize i gasifikacije<br />oklaska kukuruza. Istraživanje procesa pirolize obuhvatalo je definisanje<br />uticaja procesnih parametara (temperature pirolize, reakcionog vremena,<br />brzine zagrevanja i veliĉine ĉestica) na prinos ĉvrstog ostatka i pirolitiĉkog<br />gasa. Osim toga, vr&scaron;eno je ispitivanje sastava gasa u zavisnosti od<br />temperature. UtvrĊeno je da ispitivani procesni parametri imaju uticaj na<br />prinos ĉvrstog ostatka i bio-ulja, kao i na prinos i sastav pirolitiĉkog gasa.<br />Tokom ispitivanja procesa gasifikacije razvijen je funkcionalni matematiĉki<br />model gasifikacije oklaska kukuruza u struji vazduha koji bi trebalo da<br />omogući optimizaciju procesa gasifikacije goriva u cilju dobijanja gasovitog<br />proizvoda.</p> / <p>Doctoral dissertation investigates pyrolysis and gasification of corncob.<br />Investigation of pyrolysis process included defining the influence of process<br />parameters (pyrolysis temperature, reaction time, heating rate and particle<br />size) on pyrolysis gas and char yield. Also, temperature dependence of<br />pyrolysis gas composition was investigated. It was confirmed that process<br />parameters influence char and bio-oil yield and pyrolysis gas yield and<br />composition. A functional mathematical model of air-stream gasification of<br />corncob was developed in order to enable optimization of gasification<br />process with the objective of obtaining gaseous product.</p>

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