Solving Complex Retrofit Problems using Constraints and Bridge Analysis
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F18%3APU130609" target="_blank" >RIV/00216305:26210/18:PU130609 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.3303/CET1870326" target="_blank" >http://dx.doi.org/10.3303/CET1870326</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3303/CET1870326" target="_blank" >10.3303/CET1870326</a>
Alternative languages
Result language
angličtina
Original language name
Solving Complex Retrofit Problems using Constraints and Bridge Analysis
Original language description
The aim of this paper is to conduct retrofit analysis of large, complex industrial Heat Exchanger Networks using an automated Bridge Analysis. Large, complex networks have many different possible retrofit designs, or Retrofit Bridges, which requires both computational effort and user effort to evaluate. In this paper, constraints relating to the thermodynamic and economic performance of a retrofit design are proposed and applied to significantly reduce Retrofit Bridge options to a smaller, manageable number of design options. These constraints relate to capital costs, payback period, piping, and plant layout. The method is demonstrated with a Kraft pulp mill case study. The Kraft pulp mill currently has 54 heat exchangers and 73 hot and cold streams. Without constraints, the number of possible Retrofit Bridges is 1 x 1020. After applying the constraints, this number is reduced to 15. The remaining Retrofit Bridges are considered to provide high thermodynamic and economic benefit and can be more easily assessed for the best projects. The use of constraints has allowed the complex case study to be solved quickly, and a single design can be selected for further development. The suggested design reduces the utility consumption by 9.2 MW and has an annual Total Retrofit Profit of NZD 2,140,000, requiring a single new exchanger.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
20402 - Chemical process engineering
Result continuities
Project
<a href="/en/project/EF15_003%2F0000456" target="_blank" >EF15_003/0000456: Sustainable Process Integration Laboratory (SPIL)</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Chemical Engineering Transactions
ISBN
978-88-95608-67-9
ISSN
2283-9216
e-ISSN
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Number of pages
6
Pages from-to
1951-1956
Publisher name
Italian Association of Chemical Engineering - AIDIC
Place of publication
Neuveden
Event location
Prague
Event date
Aug 25, 2018
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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