Iranian Chemical Engineering Journal

Iranian Chemical Engineering Journal

Investigating the Application of Heat Pump in Isomerization Unit to Decrease the Energy Consumption by Means of Pinch Technology

Document Type : Original Article

Authors
Z. Ghazizahedi 1
M. Hayati-Ashtiani 2
1 Ph. D. in Chemical Engineering, Kashan University
2 Assistant Professor of Chemical Engineering, Kashan University
10.22034/ijche.2021.283622.1110
Abstract
Pinch Technology is one of the effective and practical methods for energy consumption economization. In this research, Pinch Technology has been used for energy consumption optimization in the isomerization unit. As a result, heat pumps have been used for energy consumption optimization in this unit in which the amount of energy consumption in heating and cooling utilities has decreased from 128.61 GJ/h and 143.9 GJ/h to 127.8 GJ/h and 152.0 GJ/h, respectively. This energy-saving leads to a decrease in the amount of energy consumption and an increase in the efficiency of the unit. Heat pumps have been additionally applied to study the heat exchangers with the highest amount of cross-pinch
heat transfer. This study resulted in a significant decrease in the cross-pinch heat transfer, from 22.47 GJ/h to 19.90 GJ/h (11.3% decline).
 
Keywords
Pinch Technology
Heat Pump
Utilities
Isomerization
Carnot
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Iranian Chemical Engineering Journal
Volume 20, Issue 119
March and April 2022
Pages 53-63