Biorefineries : a method to compare process alternatives using different economic scenarios

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dc.contributor.advisor De Vaal, Phillip L. en
dc.contributor.postgraduate Crous, Duncan en
dc.date.accessioned 2013-09-06T17:54:01Z
dc.date.available 2011-05-10 en
dc.date.available 2013-09-06T17:54:01Z
dc.date.created 2011-04-15 en
dc.date.issued 2010 en
dc.date.submitted 2011-05-10 en
dc.description Dissertation (MEng)--University of Pretoria, 2010. en
dc.description.abstract A general overview on biorefineries and cost estimation methods is presented to provide background knowledge needed to create software focused on comparing different biorefinery configurations. The software is implemented in Microsoft Excel 2003 and can account for the capital cost, operating cost and utility requirements of different process operations based on their operating scale. To facilitate consistency in estimating capital costs an equipment factored capital cost method is implemented based on the Guthrie method. Factors used determine the capital cost includes: <ul> <li> purchased equipment cost</li><li> paterials of construction</li><li> operating pressure</li><li> time index factors</li> </ul> The program also includes a custom search algorithm that cycles through the processes to give candidates, based on feasibility equations, of single product focused configurations that can be further customised for analysis. With the program’s focus on comparing alternatives hypothetical processes are created that give the same product but use different possessing routes and starting materials. The solver was used to calculate the candidate configurations and then manually configured to evaluate energy production from side products. The program’s functionality and purpose was then shown by altering costs to give results for a different techno-economic scenario. en
dc.description.availability unrestricted en
dc.description.department Chemical Engineering en
dc.identifier.citation Crous, D 2010, Biorefineries : a method to compare process alternatives using different economic scenarios, MEng dissertation, University of Pretoria, Pretoria, viewed yymmdd < etd-05102011-124206/ > en
dc.identifier.other C11/76/ag en
dc.identifier.upetdurl http://upetd.up.ac.za/thesis/available/etd-05102011-124206/ en
dc.identifier.uri http://hdl.handle.net/2263/24528
dc.language.iso en
dc.publisher University of Pretoria en_ZA
dc.rights © 2010 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. en
dc.subject Estimate en
dc.subject Feasibility en
dc.subject Costing en
dc.subject UCTD en_US
dc.title Biorefineries : a method to compare process alternatives using different economic scenarios en
dc.type Dissertation en


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