Synergistic Effects of Performing Process Synthesis with Heat, Electricity, Shaft work and Mass Integration

Process system engineering applying the system thinking approach leads to a tremendously improved process design that considers many conflicting objectives. These conflicting objectives lead to interesting trade-offs that could hardly have been predicted since the processes are operating under many...

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Main Authors: Andreja Nemet, Zdravko Kravanja
Format: Article
Language:English
Published: AIDIC Servizi S.r.l. 2020-08-01
Series:Chemical Engineering Transactions
Online Access:https://www.cetjournal.it/index.php/cet/article/view/11113
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author Andreja Nemet
Zdravko Kravanja
author_facet Andreja Nemet
Zdravko Kravanja
author_sort Andreja Nemet
collection DOAJ
description Process system engineering applying the system thinking approach leads to a tremendously improved process design that considers many conflicting objectives. These conflicting objectives lead to interesting trade-offs that could hardly have been predicted since the processes are operating under many complex interactions taking place between their subsystems. Studying these interactions can reveal new insights into and rules for better process design. An example of such insight was proposed by Lang et al. (1988), showing that performing heat integration simultaneously with process optimisation leads not only to a reduction of utility consumption but also to decreased raw material usage due to higher overall conversion. This observation was made for processes with recycling steps performing heat integration within the recycle loops. However, the processes generally consist of several steps: the raw material preparation step, the central reaction/separation step with or without recycling, and the final product purification, conditioning step. Different synergistic effects are expected when the integration is performed only partly within a recycle. Moreover, different types of integration can lead to diverse solutions. In this study, the following scenarios were studied: i) no integration, ii) heat integration, iii) power (shaft work) integration, and iv) heat and electricity (shaft work) integration. The solutions obtained enable us to provide some valuable insights about exploiting the synergistic effects of various types of integration, their effects on the design, conversion, and selectivity of the processes and, nevertheless, also the effects among different processes via Mass Integration.
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spelling doaj.art-787641f148794b4487063f50bfc6f4992022-12-21T22:49:38ZengAIDIC Servizi S.r.l.Chemical Engineering Transactions2283-92162020-08-018110.3303/CET2081172Synergistic Effects of Performing Process Synthesis with Heat, Electricity, Shaft work and Mass IntegrationAndreja NemetZdravko KravanjaProcess system engineering applying the system thinking approach leads to a tremendously improved process design that considers many conflicting objectives. These conflicting objectives lead to interesting trade-offs that could hardly have been predicted since the processes are operating under many complex interactions taking place between their subsystems. Studying these interactions can reveal new insights into and rules for better process design. An example of such insight was proposed by Lang et al. (1988), showing that performing heat integration simultaneously with process optimisation leads not only to a reduction of utility consumption but also to decreased raw material usage due to higher overall conversion. This observation was made for processes with recycling steps performing heat integration within the recycle loops. However, the processes generally consist of several steps: the raw material preparation step, the central reaction/separation step with or without recycling, and the final product purification, conditioning step. Different synergistic effects are expected when the integration is performed only partly within a recycle. Moreover, different types of integration can lead to diverse solutions. In this study, the following scenarios were studied: i) no integration, ii) heat integration, iii) power (shaft work) integration, and iv) heat and electricity (shaft work) integration. The solutions obtained enable us to provide some valuable insights about exploiting the synergistic effects of various types of integration, their effects on the design, conversion, and selectivity of the processes and, nevertheless, also the effects among different processes via Mass Integration.https://www.cetjournal.it/index.php/cet/article/view/11113
spellingShingle Andreja Nemet
Zdravko Kravanja
Synergistic Effects of Performing Process Synthesis with Heat, Electricity, Shaft work and Mass Integration
Chemical Engineering Transactions
title Synergistic Effects of Performing Process Synthesis with Heat, Electricity, Shaft work and Mass Integration
title_full Synergistic Effects of Performing Process Synthesis with Heat, Electricity, Shaft work and Mass Integration
title_fullStr Synergistic Effects of Performing Process Synthesis with Heat, Electricity, Shaft work and Mass Integration
title_full_unstemmed Synergistic Effects of Performing Process Synthesis with Heat, Electricity, Shaft work and Mass Integration
title_short Synergistic Effects of Performing Process Synthesis with Heat, Electricity, Shaft work and Mass Integration
title_sort synergistic effects of performing process synthesis with heat electricity shaft work and mass integration
url https://www.cetjournal.it/index.php/cet/article/view/11113
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