Abstract
Structural sensitivity analysis is an analysis procedure developed for use in process structural synthesis (flow sheet synthesis). The primary problem treated is that of determining, without reoptimizing the modified system, whether a feasible structural modification (generated automatically by a computer or manually by an engineer) to a given feasible structure appreciates return. The method proposed is to generate alternately dual (using generalized dual bounding procedures) and primal bounds for the modified system until a decision is possible on the value of the modification. Based on this approach, the paper presents a strategy which fully exploits dual bounding information to select the best of several proposed modifications at each step in the synthesis of a process flow sheet. Thus it is a local procedure for use in synthesis. It is demonstrated on three heat exchanger network synthesis problems.
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