Comparative Study of Thermal Waste Recovery Systems Deployed in Three Different Chemical Units

Document Type : Research Article

Authors

1 Chemical Engineering Department, NED University of Engineering & Technology, Karachi, Sindh, PAKISTAN

2 Polymer and Petrochemical Engineering Department, NED University of Engineering & Technology, Karachi, Sindh, PAKISTAN

Abstract

Waste thermal energy is enough energy that is rejected to the atmosphere in the form of flue gases, streams of air, and liquid rejected from industries. It arises from the equipment, less efficient processes, and limitations due to thermodynamics' laws on operations. It is obvious that it is not possible to regenerate all waste energy, but most of the time, some waste heat can be used to achieve useful purposes. Waste heat recovery is the most important key to carrying out most of the research areas. The major areas of research and it is necessary to make the process more energy-efficient in chemical industries. To save energy, Heat Exchanger Network’s (HEN) synthesis is essential. They are designed to reach energy targets. HEN design is the thermal integration between cold and hot utilities by pinch analysis at minimum temperature difference. HENs are important for utility saving because it helps in recovering heat from hot streams to others which reduces utility consumption and requirements. The heat exchangers are designed with simplified models for different industries using pinch technology. Most thermal recovery is obtained, and then some HEN network is required for a particular targeted area. In this research, improvements in energy recovery systems and HENs, and synthesis helps in capital savings, and pollutant emission can also be reduced.

Keywords

Main Subjects

References

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Iranian Journal of Chemistry and Chemical Engineering
Volume 41, Issue 4 - Serial Number 114
April 2022
Pages 1458-1500

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