文摘
A key component of any process control upgrade project is the initial benefits analysis, which evaluates the feasibility of the project based on economic and process information. The core of this analysis is benefits calculation, which is commonly based only on the reduction of variance. In this thesis, an optimization approach was proposed and a structured benefits analysis procedure was discussed.;With the information contained in key process variables, product economics and process operation conditions, the process performance evaluation can be formulated as a chance constrained optimisation problem. The solution of the optimization problem is the optimal process operating point and the optimum economic performance, which will allow direct comparison of the different alternatives. This thesis provides an algorithm for the solution of the benefits analysis problem and develops sensitivity expressions for optimal process profitability and operating point.
