PROBLEM-ORIENTED MODULES FOR PROCESS SIMULATION - RESOLUTION STRATEGIES FOR SIMULATION AND OPTIMIZATION

A new resolution strategy is presented to overcome short-comings of th e sequential modular process flowsheeting. Following a logic flow of i nformation, different from the material flow of streams in the flowshe et, changes the mathematical structure of the system of equations that models the units. New programs have been generated, very different fr om traditional modules. Deciding an appropriate resolution strategy us ually leads to a dramatic reduction in required CPU times and to an in creased flexibility to handle different problems. The simulation conve rgence and process optimization can be approached from a different per spective.