Heat Integration retrofit analysis—an oil refinery case study by Retrofit Tracing Grid Diagram

Heat Integration has been established over the last decades as a proven chemical engineering methodology. Two design implementations are often used in the industry: grassroots and retrofit. Although various methods have been developed for retrofit, it still needs more development to ensure simultaneously thermodynamic feasibility and economic viability. In this paper, a novel graphical approach has been developed to facilitate the understanding of the current situation and scope of improvement. The Retrofit Tracing Grid Diagram presents all streams and heat exchangers in temperature scale and the heat exchangers are clearly separated from each other, enabling clear visualisation of the current state. The tool incorporates the previously developed Cross-Pinch Analysis as well as path approach for retrofit. Additionally, the non-vertical heat transfer can be evaluated. The application of the developed tool has been validated on an oil refinery case study. The applicability of the tool is evident as it can reveal additional options for modification that none of the previous methods considered.

[1]  Petar Sabev Varbanov,et al.  Shifted Retrofit Thermodynamic Diagram: A Modified Tool for Retrofitting Heat Exchanger Networks , 2014 .

[2]  박선원,et al.  공정자료만을 이용한 모델링 및 최적화에서 Data Reconciliation 과 Gross Error Detection , 1995 .

[3]  Petar Sabev Varbanov,et al.  Heat exchanger network retrofit supported by extended Grid Diagram and heat path development , 2015 .

[4]  René Bañares-Alcántara,et al.  A Novel Visualization Tool for Heat Exchanger Network Retrofit , 1996 .

[5]  Jiří Jaromír Klemeš,et al.  Optimising entire lifetime economy of heat exchanger networks , 2013 .

[6]  X. X. Zhu,et al.  Diagnosis and optimization approach for heat exchanger network retrofit , 1999 .

[7]  Vornel Walker.  Designing a Process Flowsheet , 2009 .

[8]  Thore Berntsson,et al.  Use of advanced composite curves for assessing cost-effective HEN retrofit I: Theory and concepts , 2009 .

[9]  Shankar Narasimhan,et al.  Data reconciliation & gross error detection: an intelligent use of process data , 1999 .

[10]  Petar Sabev Varbanov,et al.  Rules for paths construction for HENs debottlenecking , 2000 .

[11]  J. W. Ponton,et al.  Alternatives to neural networks for inferential measurement , 1993 .

[12]  J. KlemeÅ,et al.  Process Integration – Successful Implementation and Possible Pitfalls , 2010 .

[13]  Mamdouh A. Gadalla,et al.  A new graphical method for Pinch Analysis applications: Heat exchanger network retrofit and energy integration , 2015 .

[14]  Jiří Jaromír Klemeš,et al.  Forty years of Heat Integration: Pinch Analysis (PA) and Mathematical Programming (MP) , 2013 .

[15]  Thore Berntsson,et al.  Use of advanced composite curves for assessing cost-effective HEN retrofit II. Case studies , 2009 .

[16]  Bodo Linnhoff,et al.  Using pinch technology for process retrofit , 1986 .

[17]  Peter J.T. Verheijen,et al.  The placement of two-stream and multi-stream heat-exchangers in an existing network through path analysis , 1995 .

[18]  Marian Trafczynski,et al.  Handbook of Process Integration (PI). Minimisation of Energy and Water Use, Waste and Emissions , 2015 .

[19]  Sharifah Rafidah Wan Alwi,et al.  Targeting the maximum heat recovery for systems with heat losses and heat gains , 2014 .

[20]  John R. Flower,et al.  Synthesis of heat exchanger networks: I. Systematic generation of energy optimal networks , 1978 .

[21]  Robin Smith,et al.  Recent development in the retrofit of heat exchanger networks , 2010 .

[22]  Jiří Jaromír Klemeš,et al.  Recent extension and development of design integrated system—DIS , 1979 .

[23]  Antonio Piacentino,et al.  Thermal analysis and new insights to support decision making in retrofit and relaxation of heat exchanger networks , 2011 .

[24]  Thore Berntsson,et al.  Design Better Heat Exchanger Network Rerofits , 1993 .

[25]  N.D.K. Asante,et al.  An automated approach for heat exchanger network retrofit featuring minimal topology modifications , 1996 .

[26]  Igor Bulatov,et al.  Sustainability in the Process Industry: Integration and Optimization , 2010 .