能源工程2024，Vol.44Issue(4)：36-44,9.DOI:10.16189/j.nygc.2024.04.007
基于CFD的焚烧炉二次风优化布置数值模拟研究
Numerical investigation on the optimized arrangement of secondary air in incinerator based on CFD
凌佳喜 1周向阳 2刘明辉 2赵兵 2何俊 2刘焕 2程国坚3
作者信息
- 1. 江苏集萃工业过程模拟与优化研究所有限公司,江苏 苏州 215000
- 2. 中节能兆盛环保有限公司,江苏 无锡 214200
- 3. 东南大学流程工业智能化研究中心,江苏 苏州 215000
- 折叠
摘要
Abstract
To study the influence of secondary air layout and front and rear wall wind speed on the flow field,temperature field,and pollutant generation concentration inside incinerator,CFD numerical simulation was conducted to investigate a 200t/d municipal solid waste incinerator.software FLIC and FLUENT were used respectively to simulate the combustion process of dense waste bed and the gaseous phase combustion inside furnace chamber.A customized program was developed using the secondary development platform to achieve the coupling of FLIC and FLUENT data.The simulation results indicate that,in the scenario that secondary air is arranged in staggered manner,front wall wind speed(21.657m/s)should be slower than rear wall wind speed(40.220m/s)to keep the main flue gas flow located in the center of furnace and reduce the vortex generated at the root of secondary air,which leads to a more uniform airflow distribution and a higher filling degree of flue gas in furnace.While secondary air is arranged in a countering manner,front wall wind speed is roughly equal to back wall air wind(33.413m/s)so that high-temperature flue gas is kept in the middle of furnace.Furthermore,a minimum CO concentration(41.64mg/m3)was found in the scenario of staggered arrangement of secondary air,the front wall wind speed(21.657m/s)is slower than the rear wall wind speed(40.220m/s),The secondary air arrangement manner introduced in this paper is favourable to reduce energy consumption and improve combustion efficiency,which provides reasonable technical parameters for design of incinerator.关键词
焚烧炉/数值模拟/二次风布置/交错/对冲/污染物浓度Key words
numerical investigation/arrangement of secondary air/incinerator/CFD分类
信息技术与安全科学引用本文复制引用
凌佳喜,周向阳,刘明辉,赵兵,何俊,刘焕,程国坚..基于CFD的焚烧炉二次风优化布置数值模拟研究[J].能源工程,2024,44(4):36-44,9.
