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Process integration as an optimisation tool in multipurpose batch plants
Thesis (PhD)--University of Pretoria, 2016.
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| Format: | Thesis |
| Language: | English |
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University of Pretoria
2016
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| _version_ | 1867613518969176064 |
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| access_status_str | Open Access |
| author2 | Majozi, Thokozani |
| author_browse | Majozi, Thokozani |
| author_facet | Majozi, Thokozani |
| collection | Thesis |
| dc_rights_str_mv | © 2016 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. |
| description | Thesis (PhD)--University of Pretoria, 2016. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/56110 |
| institution | University of Pretoria (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:37:25.898Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2016 |
| publishDateRange | 2016 |
| publishDateSort | 2016 |
| publisher | University of Pretoria |
| publisherStr | University of Pretoria |
| record_format | dspace |
| source_str | UPSpace — University of Pretoria Institutional Repository |
| spelling | oai:repository.up.ac.za:2263/56110 Process integration as an optimisation tool in multipurpose batch plants Majozi, Thokozani janestamp@gmail.com Stamp, Jane Dorothy UCTD Optimisation tool Multipurpose batch plants Process integration Engineering, built environment and information technology theses SDG-07 Engineering, built environment and information technology theses SDG-09 Engineering, built environment and information technology theses SDG-12 Thesis (PhD)--University of Pretoria, 2016. Heat integration to optimise energy usage becomes a possibility if a process includes both heat generating and heat consuming operations. Heat integration in batch plants has in the past been largely disregarded as utility requirements are considered less significant due to the smaller scale of batch operations compared to continuous plants. However, utility requirements in some batch plants, such as in the food and drink industries, dairies, meat processing facilities, biochemical plants and agrochemical facilities, contribute largely to their overall costs. This thesis is a continuation of the work published by Stamp and Majozi (2011) and two different aspects of heat integration in multipurpose batch plants are considered. Firstly, wastewater minimisation constraints from the model of Adekola and Majozi (2011) were superimposed into the heat integration model of Stamp and Majozi (2011) and the simultaneous optimisation of scheduling, energy and water was considered. This has not been covered extensively in published literature as the optimisation of all three aspects of a multipurpose batch plant complicates the optimisation. The proposed simultaneous method was compared to a published sequential method and gave an improved profit of 6.78% for a multipurpose example. Secondly, a model for the simultaneous optimisation of the schedule and energy usage in heat integrated multipurpose batch plants operated over long time horizons is presented. The method uses a cyclic scheduling solution procedure. Indirect heat integration via heat storage was included, rather than just direct heat integration. This has not been considered in longterm heat integration models in current literature. Both the heat storage size and initial heat storage temperature were also optimised. The solution obtained over 24 h using the proposed cyclic scheduling model with heat storage for a simple sequential process was compared to the result obtained from the direct solution and an error of less than 1% was achieved. tm2016 mi2026 Chemical Engineering PhD Unrestricted SDG-07: Affordable and clean energy SDG-09: Industry, innovation and infrastructure SDG-12: Responsible consumption and production 2016-07-29T11:02:08Z 2016-07-29T11:02:08Z 2016-04-07 2016 Thesis Stamp, JD 2016, Process integration as an optimisation tool in multipurpose batch plants, PhD Thesis, University of Pretoria, Pretoria, viewed yymmdd <http://hdl.handle.net/2263/56110> A2016 http://hdl.handle.net/2263/56110 en © 2016 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. application/pdf University of Pretoria |
| spellingShingle | UCTD Optimisation tool Multipurpose batch plants Process integration Engineering, built environment and information technology theses SDG-07 Engineering, built environment and information technology theses SDG-09 Engineering, built environment and information technology theses SDG-12 Process integration as an optimisation tool in multipurpose batch plants |
| title | Process integration as an optimisation tool in multipurpose batch plants |
| title_full | Process integration as an optimisation tool in multipurpose batch plants |
| title_fullStr | Process integration as an optimisation tool in multipurpose batch plants |
| title_full_unstemmed | Process integration as an optimisation tool in multipurpose batch plants |
| title_short | Process integration as an optimisation tool in multipurpose batch plants |
| title_sort | process integration as an optimisation tool in multipurpose batch plants |
| topic | UCTD Optimisation tool Multipurpose batch plants Process integration Engineering, built environment and information technology theses SDG-07 Engineering, built environment and information technology theses SDG-09 Engineering, built environment and information technology theses SDG-12 |
| url | http://hdl.handle.net/2263/56110 |