debottlenecking of heat exchanger networks with fixed pressure drops (ii) design.

debottlenecking of heat exchanger networks is a very important issue, when a plant is subject to process changes and/or increased throughput. in previous paper, a new targetting method was introduced, that allowed the designer to consider hydrodynamic constraints when debottlenecking a network. in this paper, a design procedure, which guarantees the consistency of the results of targetting stage with those of synthesis and detailed design stages is introduced. the new procedure is then applied to the same crude oil distillation unit and the results of the there stages are compared. the case study has shown that full consistency between the results of three stages is achievable, when area algorithm based on fixed pressure drop is used in debottlenecking procedures