Resource conservation and optimization via process integration

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Title: Resource conservation and optimization via process integration
Author: Gabriel, Frederico Burjack
Abstract: The process industries are characterized by the enormous use of natural resources such as raw materials , solvents , water , and utilities . Additionally , significant amounts of wastes are discharged from industrial facilities . As the world moves toward sustainable progress , that is , meeting the demand of the current generation without affecting or compromising the new generation , future process facilities must focus on resource conservation and pollution prevention . The purpose of this work is to introduce a new process integration methodology for the conservation and optimization of resources in the process industries . The work is also geared towards reducing waste discharge from the processing facilities . The optimal management of fresh resources and waste disposal requires the appropriate allocation , generation , and separation of streams and species . Material recycle /reuse /substitution , reaction alteration , and process modification are some of the main strategies employed to conserve resources in the process industries . The overall problem addressed in this dissertation can be stated as follows : Given is a process with a number of streams (sources ) that are characterized by certain criteria (e .g . , compositions of certain compounds , targeted properties ) where these streams can be utilized in a number of process units (sinks ) if they satisfy given constraints on flow rate , compositions , and /or properties . Additionally , interception devices may be used to adjust stream criteria . The objective is to develop targeting procedures and synthesis tools for the identification of minimum usage of fresh resources , minimum discharge of waste , and maximum integration of process resources . The devised methodology addresses four classes of problems : ? ? Targeting techniques using direct recycle strategies ? ? Recycle and interception procedures for single -component systems ? ? Recycle and interception procedures for multi -component systems ? ? Property integration for direct recycle strategies The framework provided by this dissertation couples traditional mass integration with groundbreaking property integration techniques to target , synthesize and optimize a plant for maximal conservation of resources . In particular , this work introduces new techniques such as material recycle pinch analysis , simultaneous recycle and interception networks , and property -based allocation . Additionally , graphical , algebraic , and optimization approaches are developed and validated with case studies in order to illustrate the applicability of the devised procedures .
URI: http : / /hdl .handle .net /1969 .1 /3144
Date: 2006-04-12

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Resource conservation and optimization via process integration. Available electronically from http : / /hdl .handle .net /1969 .1 /3144 .

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