Open Access

ARTICLE

An Efficient Method for Heat Recovery Process and Temperature Optimization

by Basim Kareem Naser¹, Mohammed Dauwed^2,*, Ahmed Alkhayyat³, Mustafa Musa Jaber^4,5, Shahad Alyousif^6,7, Mohammed Hasan Ali⁸

1 Dentistry Department, Al-Mustaqbal University College, Hilla, 51001, Iraq
2 Medical Instrumentation Techniques Engineering, Dijlah University College, Baghdad, 00964, Iraq
3 College of Technical Engineering, The Islamic University, Najaf, 54001, Iraq
4 Department of Medical Instruments Engineering Techniques, Al-Turath University College, Baghdad, 10021, Iraq
5 Department of Medical Instruments Engineering Techniques, Al-Farahidi University, Baghdad, 10021, Iraq
6 Research Centre, University of Mashreq, Baghdad, 11001, Iraq
7 College of Engineering, Department of Electrical & Electronic Engineering, Gulf University, Almasnad, 4363, Kingdom of Bahrain
8 Computer Techniques Engineering Department, Faculty of Information Technology, Imam Ja’afar, Al-Sadiq University, Najaf, 10023, Iraq

* Corresponding Author: Mohammed Dauwed. Email:

Computers, Materials & Continua 2023, 75(1), 1017-1031. https://doi.org/10.32604/cmc.2023.033957

Received 02 July 2022; Accepted 26 October 2022; Issue published 06 February 2023

Abstract

Flue gas heat loss accounts for a significant component of the overall heat loss for coal-fired boilers in power plants. The flue gas absorbs more heat as the exhaust gas temperature rises, which reduces boiler efficiency and raises coal consumption. Additionally, if the exhaust gas temperature is too high, a lot of water must be used to cool the flue gas for the wet flue gas desulfurization system to function well, which has an impact on the power plant’s ability to operate profitably. It is consequently vital to take steps to lower exhaust gas temperatures in order to increase boiler efficiency and decrease the amount of coal and water used. Desulfurization performance may be enhanced and water use can be decreased by reasonable flue gas characteristics at the entry. This study analyzed the unit’s energy consumption, investment, and coal savings while proposing four coupling strategies for regulating flue gas temperature and waste heat recovery. A graded flue gas conditioning and waste heat recovery plan was presented under the condition of ensuring high desulfurization efficiency, along with the notion of minimizing energy loss owing to energy inflow temperature difference. Numerical results show that the proposed methods improved the system performance and reduced the water consumption and regulated the boiler temperature.

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Keywords

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