Numerical Simulation And Multi-Objective Optimization Of Ultra-Low Nitrogen Burners For Ethylene Cracking Furnaces

Hu, Guihua; Chen, Kunpeng; Chen, Mimi

doi:10.37190/epe250103

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Tytuł artykułu

Numerical Simulation And Multi-Objective Optimization Of Ultra-Low Nitrogen Burners For Ethylene Cracking Furnaces

Autorzy

Hu Guihua , Chen Kunpeng , Chen Mimi

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DOI

10.37190/epe250103

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Abstrakty

Coupled numerical simulation and multi-objective optimization for ultra-low nitrogen burners of ethylene cracking furnaces using a fast response surrogate model for combustion are proposed. Firstly, based on simplified reaction mechanisms involving 29 species and 164 reactions, a computational fluid dynamics (CFD)-coupled model for turbulent combustion is established. Secondly, a multi-objective optimization scheme based on a strong generalization-based surrogate model is developed for ultra-low nitrogen burners of ethylene cracking furnaces. The results show that a set of optimal operating parameters for the cracking furnace, i.e., the excess air coefficient of 1.07, the fuel gas flow rate of 0.192 kg/s, and the air preheating temperature of 380 K, is obtained. The optimal NO_x emission con-centration decreased from 75.38 mg/m³ of the original scheme to 71.2 mg/m3, i.e., a decrease of 5.55%. The thermal efficiency of the firebox increased from 43.82% of the original scheme to 44.49%, i.e., an increase of 1.53%, which provides theoretical guidance for energy conservation and emission reduction of cracking furnaces.

Słowa kluczowe

air preheater bioremediation cracking digital elevation model emission control gas burners

podgrzewacz powietrza bioremediacja kraking numeryczny model terenu kontrola emisji palniki gazowe

Wydawca

Oficyna Wydawnicza Politechniki Wrocławskiej

Czasopismo

Environment Protection Engineering

Rocznik

2025

Tom

Vol. 51, nr 1

Strony

37--63

Opis fizyczny

Bibliogr. 34 poz., rys., tab.

Twórcy

autor

Hu Guihua

huguihua@ecust.edu.cn

Key Laboratory of Smart Manufacturing in Energy Chemical Process of Ministry of Education, East China University of Science and Technology, Shanghai 200237, China.
Engineering Research Center of Process System Engineering, Ministry of Education, East China Uni-versity of Science and Technology, Shanghai 200237, China.

https://orcid.org/0000-0003-0217-607X

autor

Chen Kunpeng

CIBFINTECH, No. 2977 Chuansha Road, Pudong New Area, Shanghai 200131, China

https://orcid.org/0009-0007-0741-3253

autor

Chen Mimi

Key Laboratory of Smart Manufacturing in Energy Chemical Process of Ministry of Education, East China University of Science and Technology, Shanghai 200237, China.

https://orcid.org/0009-0007-7360-2271

Bibliografia

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