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Integration of LiBr-H2O absorption heat pumps in distillation columns.

Author(s) : VASILESCU C., INFANTE FERREIRA C. A., TARLEA G. M.

Summary

This paper presents a study of the possibility to reduce the input of energy in bulk separation processes, specifically in continuous binary distillation processes, by integrating LiBr-H2O absorption heat pumps in distillation columns. Two different configurations were studied. In the first configuration, the absorber and the condenser of the absorption heat pump were inserted in the stripping section of the column, thus obtaining a diabatic column. In this diabatic column the heat exchangers are integrated in some trays of the column, instead of using just the reboiler as the heat source. The second configuration has only the absorber inserted in the stripping section of the column, while the (external) reboiler uses the heat from the condenser of the absorption heat pump. Several layouts of the heat exchangers, covering a different number of trays of the column and with different temperatures between the external medium and the refrigerant are investigated.

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Pages: 2009-5

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Details

  • Original title: Integration of LiBr-H2O absorption heat pumps in distillation columns.
  • Record ID : 2009-2166
  • Languages: English
  • Source: 3rd Conference on Thermophysical Properties and Transfer Processes of Refrigerants
  • Publication date: 2009/06/23

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