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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

  • Czech description

Classification

  • Type

    D - Article in proceedings

  • CEP classification

  • 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

  • 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