Extent-based reconstruction of the inlet composition matrix in process systems with feed variability and unknown reaction dynamics

Extent-based representation is a powerful tool for reaction systems since it decouples the related dynamics and inlet flow dynamics. However assumes that composition exactly known. In this paper, we present design of an estimation procedure to partially reconstruct approximate matrix based on extent process. This especially necessary when process have recycles streams or contains traces other species. The done by transforming measured moles basis nominal but incorrect composition. use will reveal difference between true model. error these two can be exploited cast constrained linear optimization problem estimate uncertainty in correction crucial obtaining appropriate extent-based used control, state parameter approaches. extents motivated because allows represent system with set decoupled dynamics, avoiding necessity procedure. techniques developed paper are ultimately tested simple case study CSTR recycle stream from flash evaporator.