Resource Conservation

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Dominic C.y. Foo - One of the best experts on this subject based on the ideXlab platform.

  • integrating input output models with pinch technology for enterprise sustainability analysis
    Clean Technologies and Environmental Policy, 2015
    Co-Authors: Xiaoping Jia, Dominic C.y. Foo, Fang Wang, Raymond R. Tan
    Abstract:

    This article proposes an integrated framework for enterprise sustainability assessment by integrating enterprise input–output modeling with water pinch analysis. Firstly, material metabolism of an enterprise is investigated to establish a baseline; then, potential for Resource Conservation and waste minimization is evaluated. The environmental performance and economic feasibility of modifications are then assessed based on identification of key processes. Thus, the framework provides a method to connect material metabolism analysis of enterprises with the implementation of specific actions for Resource Conservation and waste minimization. The case of the water utilization system at Wangpo coal mine in China is used to illustrate the framework developed. Two process integration scenarios, involving direct reuse/recycle and regeneration, are presented. The corresponding revised input–output models for each scenario are illustrated.

  • heat integrated Resource Conservation networks without mixing prior to heat exchanger networks
    Journal of Cleaner Production, 2014
    Co-Authors: Yin Ling Tan, Dominic C.y. Foo, Mahmoud M Elhalwagi, Yudi Samyudia
    Abstract:

    Abstract This paper presents a generic approach for the synthesis of heat integrated Resource Conservation networks (HIRCNs) of the fixed flow rate problem, where process sources linked directly to process sinks without any prior mixing. The mixed integer non-linear program (MINLP) formulation complemented by floating pinch concept was developed to determine the optimum fresh material Resources as well as hot and cold energy utilities. The proposed approach is applicable for both concentration- and property-based direct reuse/recycle system with variable operating parameters (i.e. flow rates, temperatures and properties). Three literature case studies are solved to illustrate the proposed approach.

  • Process Integration for Resource Conservation
    2012
    Co-Authors: Dominic C.y. Foo
    Abstract:

    Introduction Motivating Examples Process Synthesis and Analysis Process Integration: A Brief Overview Strategies for Material Recovery and Types of RCNs Problem Statements Structure of the Book Data Extraction for Resource Conservation Segregation for Material Sources Extraction of Limiting Data for Material Sink for Concentration-Based RCN Data Extraction for Mass Exchange Processes Data Extraction for Hydrogen-Consuming Units in Refinery Data Extraction for Property Integration Additional Readings PART I INSIGHT-BASED PINCH ANALYSIS TECHNIQUES Graphical Targeting Techniques for Direct Reuse/Recycle Material Recovery Pinch Diagram Significance of the Pinch and Insights from MRPD Targeting for Multiple Resources Targeting for Threshold Problems Targeting for Property Integration Additional Readings Algebraic Targeting Techniques for Direct Reuse/Recycle Generic Procedure for Material Cascade Analysis Technique Targeting for Multiple Fresh Resources Targeting for Threshold Problems Targeting for Property Integration with Inferior Property Operator Level Process Changes for Resource Conservation Networks Plus-Minus Principle Algebraic Targeting Approach for Material Regeneration Networks Types of Interception Units Targeting for Single Pass Interception Unit Modeling of Mass Exchange Operation as Interception Unit Additional Readings Network Design and Evolution Techniques Procedure for Nearest Neighbor Algorithm Design for Direct Material Reuse/Recycle and the Matching Matrix Design for Material Regeneration Network Network Evolution Techniques Additional Readings Targeting for Waste Treatment and Total Material Networks Total Material Network Generic Procedure for Waste Stream Identification Waste Identification for Material Regeneration Network Targeting for Minimum Waste Treatment Flowrate Insights from the WTPD Additional Readings Synthesis of Pretreatment Network Basic Modeling of a Partitioning Interception Unit Pretreatment Pinch Diagram Insights on Design Principles from PPD Pretreatment Network Design with Nearest Neighbor Algorithm Synthesis of Inter-Plant Resource Conservation Networks Types of IPRCN Problems Generic Targeting Procedure for IPRCN Design of IPRCN IPRCN with Material Regeneration and Waste Treatment Additional Readings Synthesis of Batch Material Networks Types of Batch Resource Consumption Units Targeting Procedure for Direct Reuse/Recycle in a BMN without Mass Storage System Targeting Procedure for Direct Reuse/Recycle in a BMN with Mass Storage System Targeting for Batch Regeneration Network Design of a BMN Waste Treatment and Batch Total Network Additional Readings PART II MATHEMATICAL OPTIMIZATION TECHNIQUES Synthesis of Resource Conservation Networks: A Superstructural Approach Superstructural Model for Direct Reuse/Recycle Network Incorporation of Process Constraints Capital and Total Cost Estimations Reducing Network Complexity Superstructural Model for Material Regeneration Network Superstructural Model for Inter-Plant Resource Conservation Networks Additional Readings Automated Targeting Model for Direct Reuse/Recycle Networks Basic Framework and Mathematical Formulation of ATM Incorporation of Process Constraints into ATM ATM for Property Integration with Inferior Operator Level ATM for Bilateral Problems Automated Targeting Model for Material Regeneration and Pretreatment Networks Types of Interception Units and Their Characteristics ATM for RCN with Single Pass Interception Unit of Fixed Outlet Quality Type ATM for RCN with Single Pass Interception Unit of Removal Ratio Type Modeling for Partitioning Interception Unit(s) of Fixed Outlet Quality Type Modeling for Partitioning Interception Unit(s) of Removal Ratio Type ATM for RCN with Partitioning Interception Unit(s) ATM for Pretreatment Networks Additional Readings Automated Targeting Model for Waste Treatment and Total Material Networks ATM for Waste Treatment Network ATM for TMN without Waste Recycling ATM for TMN with Waste Recycling Additional Readings Automated Targeting Model for Inter-Plant Resource Conservation Networks ATM for Direct Integration Scheme-Direct Material Reuse/Recycle ATM for Direct Integration Scheme: RCNs with Individual Interception Unit ATM for IPRCNs with Centralized Utility Facility Insights from ATM for IPRCN Synthesis Further Reading Automated Targeting Model for Batch Material Networks Basic ATM Procedure for Batch Material Networks ATM for Direct Reuse/Recycle Network ATM for Batch Regeneration Network ATM for Batch Total Network Further Reading Appendix: Case Studies and Examples Index Problems and References appear at the end of each chapter.

  • property integration for Resource Conservation network synthesis in palm oil mills
    Chemical Engineering Journal, 2011
    Co-Authors: Chengliang Chen, Juiyuan Lee, Dominic C.y. Foo
    Abstract:

    This paper presents a mathematical model for Resource Conservation in a palm oil milling process via property integration. The focus is given to the clay bath system for kernel/shell separation based on flotation principle. In the present work, the clay bath separator is considered as a semi-continuous unit with a specific operating period. This is different from previous works where it is simplified as a continuous unit. The design problem can be formulated as a nonlinear program based on a superstructure approach, with the optimization objective that is set to minimize the fresh Resource consumption or the operating cost. An illustrative example is solved to demonstrate the proposed model. The results indicate that more than 40% reduction in fresh Resource consumption and more than 50% reduction in operating cost can be achieved through material recovery.

  • an extended graphical targeting technique for direct reuse recycle in concentration and property based Resource Conservation networks
    Clean Technologies and Environmental Policy, 2011
    Co-Authors: Shin Yin Saw, Dominic C.y. Foo, Raymond R. Tan, Irene Mei Leng Chew, Liangming Lee, Ming Hann Lim, Jiři Jaromir Klemes
    Abstract:

    Minimum flowrate targeting methods for Resource Conservation networks (RCNs) have been developed over the last decades. The existing methodologies still have certain drawbacks. Their design insights could be deepened and some steps should be more convenient for the users. A targeting tool called the material surplus composite curve (MSCC), which is an improvement of the surplus diagram for water and hydrogen networks is introduced. The approach is illustrated on several cases selected from the literature. Using this technique, it is possible to determine rigorous flowrate targets for different variants of the RCN problem.

Raymond R. Tan - One of the best experts on this subject based on the ideXlab platform.

  • integrating input output models with pinch technology for enterprise sustainability analysis
    Clean Technologies and Environmental Policy, 2015
    Co-Authors: Xiaoping Jia, Dominic C.y. Foo, Fang Wang, Raymond R. Tan
    Abstract:

    This article proposes an integrated framework for enterprise sustainability assessment by integrating enterprise input–output modeling with water pinch analysis. Firstly, material metabolism of an enterprise is investigated to establish a baseline; then, potential for Resource Conservation and waste minimization is evaluated. The environmental performance and economic feasibility of modifications are then assessed based on identification of key processes. Thus, the framework provides a method to connect material metabolism analysis of enterprises with the implementation of specific actions for Resource Conservation and waste minimization. The case of the water utilization system at Wangpo coal mine in China is used to illustrate the framework developed. Two process integration scenarios, involving direct reuse/recycle and regeneration, are presented. The corresponding revised input–output models for each scenario are illustrated.

  • an extended graphical targeting technique for direct reuse recycle in concentration and property based Resource Conservation networks
    Clean Technologies and Environmental Policy, 2011
    Co-Authors: Shin Yin Saw, Dominic C.y. Foo, Raymond R. Tan, Irene Mei Leng Chew, Liangming Lee, Ming Hann Lim, Jiři Jaromir Klemes
    Abstract:

    Minimum flowrate targeting methods for Resource Conservation networks (RCNs) have been developed over the last decades. The existing methodologies still have certain drawbacks. Their design insights could be deepened and some steps should be more convenient for the users. A targeting tool called the material surplus composite curve (MSCC), which is an improvement of the surplus diagram for water and hydrogen networks is introduced. The approach is illustrated on several cases selected from the literature. Using this technique, it is possible to determine rigorous flowrate targets for different variants of the RCN problem.

  • flowrate targeting algorithm for interplant Resource Conservation network part 2 assisted integration scheme
    Industrial & Engineering Chemistry Research, 2010
    Co-Authors: Irene Mei Leng Chew, Dominic C.y. Foo, Raymond R. Tan
    Abstract:

    Part 1 of the series (Chew, I. M. L.; Foo, D. C. Y.; Ng, D. K. S.; Tan, R. R. Flowrate Targeting Algorithm for Interplant Resource Conservation Network. Part 1: Unassisted Integration Scheme. Ind. Eng. Chem. Res. DOI: 10.1021/ie901802m.) proposes a systematic three-step targeting algorithm for unassisted integration scheme for interplant Resource Conservation network (IPRCN), where cross-plant streams within the pinch region can be used to achieve minimum Resource flow rate targets. However, the unassisted scheme does not hold true for all cases. Part 2 of the series explores additional material recovery to be realized by sending cross-plant streams outside the pinch region. This is known as the assisted integration scheme. Appropriate identification of waste streams as the cross-plant streams is an important step in locating the minimum flow rate targets for these cases. The effect of pinch shifting and the generation of new waste streams are also investigated.

  • automated targeting technique for concentration and property based total Resource Conservation network
    Computers & Chemical Engineering, 2010
    Co-Authors: Dominic C.y. Foo, Raymond R. Tan, Mahmoud M Elhalwagi
    Abstract:

    Resource Conservation networks (RCNs) are among the most effective systems for reducing the consumption of fresh materials and the discharge of waste streams. A typical RCN involves multiple elements of Resource pre-treatment, material reuse/recycle, regeneration/interception, and waste treatment for final discharge. Due to the close interactions among these individual elements, simultaneous synthesis of a total RCN is necessary. This paper presents an optimisation-based procedure known as automated targeting technique to locate the minimum Resource usage or total cost of a concentration- or property-based total RCNs. This optimisation-based approach provides the same benefits as conventional pinch analysis techniques in yielding various network targets prior to detailed design. Additionally, this approach offers more advantages than the conventional pinch-based techniques through its flexibility in setting an objective function and the ability to handle different impurities/properties for reuse/recycle and waste treatment networks. Furthermore, the concentration-based RCN is treated as the special case of property integration, and solved by the same model. Literature examples are solved to illustrate the proposed approach.

  • automated targeting technique for single impurity Resource Conservation networks part 1 direct reuse recycle
    Industrial & Engineering Chemistry Research, 2009
    Co-Authors: Dominic C.y. Foo, Raymond R. Tan
    Abstract:

    This pair of articles presents an optimization-based, automated procedure to determine the minimum Resource consumption/target(s) for a single-impurity Resource Conservation network (RCN). This optimization-based targeting technique provides the same benefits as conventional insight-based pinch analysis, in yielding various targets for an RCN prior to detailed design. In addition, flexibility in setting the objective function is the major advantage of the automated targeting approach over a conventional pinch analysis technique. The model formulation is linear, which ensures that a global optimum can be found if one exists. In part 1 of this pair of articles, the model for direct material reuse/recycle is presented. Its application is then demonstrated for single, multiple, and impure external Resources using several literature examples. Part 2 of this pair of articles extends the automated targeting technique for RCNs with waste-interception (regeneration) placement.

Braham Richard - One of the best experts on this subject based on the ideXlab platform.

Howell Nathan - One of the best experts on this subject based on the ideXlab platform.

Krings Alexander - One of the best experts on this subject based on the ideXlab platform.

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