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Application of an Industrial Heat Pump to a Specialty Chemical Plant
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This paper presents the results of a heat pump study conducted by TENSA Services and sponsored by the U.S. Department of Energy. In the previous phase of this project, a heat pump potential was identified through a rigorous pinch analysis. This phase of study is aimed at detailed design and required development which will eventually lead to procurement and installation. The proposed heat pump scheme has made it possible to reduce the deisohexanizer operating pressure from 28 psig to 11 psig. Total hot utility reduction amounts to 13.8 MMBtu/Hr. The overall savings of this scheme is $254,000 per year with payback in less than one year. An additional benefit of this heat pump is the debottlenecking of the upstream deisopentanizer tower. The deisopentanizer tower at 2200 barrels per day is both condenser and reboiler limited. Because of the heat pump, the present fired heater reboiler and some of the condenser area on this tower will no longer be required. The proposed heat pump also provides improvement in environmental emissions by reducing the emission of NOx, SOx and CO2.
SubjectHeat Pump Design
Tripathi, P. C.; Chao, P. (1993). Application of an Industrial Heat Pump to a Specialty Chemical Plant. Energy Systems Laboratory (http://esl.eslwin.tamu.edu). Available electronically from