Chew K., Wan Alwi S., Klemes J., Manan Z., 2013, Process Modification Potentials for Total Site Heat Integration, Chemical Engineering Transactions, 35, 175-180.
The technique to identify the scope for process modifications to improve energy efficiency of individual processes using the Composite Curves was developed many years ago. The potential of improving Total Site Heat Integration (TSHI) via process modification based on the Plus-Minus Principles of Pinch Analysis has been analysed in this work. An approach to target process modifications to maximise energy saving via TSHI has been proposed. The approach consists of two steps: in the first step, the options for reducing utility targets are identified by the use of Total Site Profiles (TSP) and Site Composite Curves (SCC); the second step is to link the identified changes on the TSP/SCC to the specific changes required at the individual processes. The study has shown that the Plus-Minus Principles can be applied on a TS context. By targeting the process modifications at the selected process sections, an improvement in heat recovery can be achieved.
