Journal ArticleDOI
Rigorous graphical targeting for resource conservation via material recycle/reuse networks
TLDR
This paper presents a rigorous graphical targeting approach to minimize the use of fresh resources by using segregation, mixing, and direct recycle/reuse strategies.Abstract:
Material recycle/reuse is one of the key strategies in reducing the consumption of fresh resources in the process industries. Over the past decade, several techniques have been developed to reduce the consumption of specific material utilities such as water and hydrogen. To date, none of the published techniques provides a noniterative, systematic, and graphical technique for identifying a target for minimum usage of the fresh resources ahead of detailed design of the recycle/reuse network. In this paper, we present a rigorous graphical targeting approach to minimize the use of fresh resources by using segregation, mixing, and direct recycle/reuse strategies. First, the problem is formulated mathematically to provide a systematic basis for its solution. Then, dynamic programming techniques are employed to derive the mathematical conditions and characteristics of an optimal solution strategy. These conditions and characteristics are transformed into a graphical form that can be readily used to identify rig...read more
Citations
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State-of-the-Art Review of Pinch Analysis Techniques for Water Network Synthesis
TL;DR: In this article, the authors provide a state-of-the-art overview of the insight-based techniques developed in the 21st century, particularly those developed for single impurity network of the fixed flow rate problems.
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Pinch analysis approach to carbon-constrained energy sector planning
Raymond R. Tan,Dominic C. Y. Foo +1 more
TL;DR: In this paper, the authors present a new application of pinch analysis for a scenario where energy sector planning takes place with carbon emission constraints arising from an effort to reduce climate change effects, where the minimum amount of zero-carbon energy resource required to achieve the overall emissions target for a country or region, given that the amount of fossil energy resources available are already known.
Journal ArticleDOI
Targeting and design of water networks for fixed flowrate and fixed contaminant load operations
Ravi Prakash,Uday V. Shenoy +1 more
TL;DR: In this paper, a new method for targeting the minimum freshwater and pinch in a single-contaminant water network is proposed, which can be applied to both kinds of operations.
Journal ArticleDOI
Optimal design and planning of sustainable chemical supply chains under uncertainty
TL;DR: In this paper, the authors address the design of sustainable chemical supply chains in the presence of uncertainty in the life cycle inventory associated with the network operation, where the design task is mathematically formulated as a bi-criterion stochastic mixed-integer nonlinear program (MINLP) that simultaneously accounts for the maximization of the net present value and the minimization of environmental impact for a given probability level.
Journal ArticleDOI
Optimization methods applied to the design of eco-industrial parks: a literature review
TL;DR: In this article, a detailed review focused on optimization works devoted to the design of eco industrial parks is presented, based on a comprehensive literature search in Web of Science database for publications that listed "industrial symbiosis" (or "eco industrial park" or "inter plant integration" and "optimization".
References
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Journal ArticleDOI
Synthesis of mass exchange networks
TL;DR: An overview of the principles of modeling, designing, and operating individual mass-exchange units can be found in this paper, where the authors provide an overview of a broad range of mass exchange operations including absorption, adsorption, stripping, solvent extraction, leaching and ion exchange.
Journal ArticleDOI
Analysis of Refinery Hydrogen Distribution Systems
Joao J. Alves,Gavin P. Towler +1 more
TL;DR: In this paper, a systematic method for the analysis of hydrogen distribution systems based on the concept of hydrogen surplus is proposed, where the minimum flow rate of fresh hydrogen required by the refinery before any system design is set.
Journal ArticleDOI
A new graphical targeting method for water minimisation
TL;DR: In this article, a new graphical method for targeting fresh water and wastewater minimisation is presented, which is based upon a new representation of water composite curves and the concept of water surplus.
Journal Article
Make your process water pay for itself
TL;DR: In this paper, two basic strategies for reducing water demand in a chemical-process plant were discussed. One strategy consists of modifying individual process and utility units to reduce their inherent need for water.
Journal ArticleDOI
On the optimality conditions of water utilization systems in process plants with single contaminants
TL;DR: In this paper, necessary conditions of optimality for water-using networks in refineries and process plants are introduced, which correspond to the optimal water allocation planning problem that considers wastewater reuse on the basis of a single contaminant.