文献类型：期刊文献

英文题名：NUMERICAL SIMULATION AND MULTI-OBJECTIVE OPTIMIZATION OF ULTRA-LOW NITROGEN BURNERS FOR ETHYLENE CRACKING FURNACES

作者：Hu, Guihua[1,2];Chen, Kunpeng[3];Chen, Mimi[1]

机构：[1]East China Univ Sci & Technol, Minist Educ, Key Lab Smart Mfg Energy Chem Proc, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Engn Res Ctr Proc Syst Engn, Minist Educ, Shanghai 200237, Peoples R China;[3]CIBFINTECH, 2977 Chuansha Rd, Shanghai 200131, Peoples R China

年份：2025

卷号：51

期号：1

起止页码：37

外文期刊名：ENVIRONMENT PROTECTION ENGINEERING

收录：;EI(收录号：20251618259931);WOS:【SCI-EXPANDED(收录号:WOS:001491930100003)】；

基金：This work was supported by the National Natural Science Foundation of China (Basic Science Center Program: 61988101) , the National Natural Science Foundation of China (62273149, 62173144) , and Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：Air preheaters - Bioremediation - Cracking (chemical) - Digital elevation model - Emission control - Gas burners - Kyoto Protocol - Low emission - Premixed flames

摘要：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 NOx emission concentration 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.