An Optimization Approach to Direct Recycle

Chapter 4, An Optimization Approach to Direct Recycle, provided graphical and algebraic approaches to the targeting and synthesis of direct-recycle networks. Graphical tools may become cumbersome for problems with numerous sources or sinks and for problems with a wide range of flowrate or load scale. Additionally, algebraic techniques cannot easily handle problems with multiple fresh resources. Therefore, it is beneficial to develop a mathematical-programming approach to the targeting of material recycle. Such approach can also be integrated with other optimization techniques. This chapter provides an optimization-based formulation for the mathematical solution of the direct recycle problem. First, the problem addressed in Chapter 4, An Optimization Approach to Direct Recycle, will be restated. Then, a structural representation of the solution alternatives will be presented. Next, the mathematical-programming formulation will be discussed along with its solution applied to a case study.

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