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| - Multipurpose Heat-Exchanger Networks for Heat Integration AcrossPlants
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| Abstract
| - The synthesis of multipurpose heat-exchanger networks that are capable of operating two plantsstand-alone as well as integrated is presented. Designs for direct integration using processstreams and indirect integration using intermediate-fluid circuits are obtained. The mathematicalmodels proposed in the synthesis of these designs account for unassisted and assisted forms ofintegration, and they rely on results previously obtained in a targeting phase. Finally, aneconomic comparison between the two types of integration for a realistic case of a crude unitand a FCC unit is performed. The analysis also reveals that the widely accepted statement thatindirect integration using steam can achieve most of the energy savings in the total site is notvalid when compared with an intermediate-fluid circuit.
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