大容量高热值垃圾焚烧炉炉内流场的模拟研究  

Simulation of the Flow Field in a Large Capacity and High Calorific Value MSW Incinerator

作　　者：潘扬 罗翠红 吴荫津 曾祥浩 PAN Yang;LUO Cuihong;WU Yinjin;ZENG Xianghao(GZEPI Design and Research Institute Co.,Ltd.,Guangdong Province Engineering Laboratory for Technology and Equipment of Waste Incineration,Guangzhou 510330,Guangdong,China;School of Electric Power Engineering,South China University of Technology,Guangdong Key Laboratory of Energy Efficient Clean Utilization,Guangzhou 510640,Guangdong,China)

机构地区：[1]广州环投设计研究院有限公司,广东省垃圾焚烧技术与装备工程实验室,广东广州510330 [2]华南理工大学电力学院,广东省高效清洁能源利用重点实验室,广东广州510640

出　　处：《工业锅炉》2020年第1期26-31,共6页Industrial Boilers

摘　　要：为优化大容量高热值垃圾焚烧炉的燃烧工况,利用数值模拟手段对不同炉膛结构下的焚烧炉内部流场进行对比分析。结果表明,烟道位置对焚烧炉内的流场分布具有明显影响,烟道入口的最佳位置为垃圾料层燃烧段的上方;前拱二次风会在烟道入口处形成涡流,涡流随后拱倾斜角的增大而增长;前拱对气相燃烧的影响大于后拱;当前拱倾斜角为21°、后拱倾斜角为35°时,炉内挥发分燃烧的效率较高,流场分布较为理想。In order to optimize the combustion condition of large capacity and high calorific value MSW(municipal solid waste)incinerator,the internal flow fields of the incinerator with different furnace structure were analyzed by numerical simulation.The results indicate that the position of flue has an obvious effect on the flow field distribution in furnace,the optimum position of flue entrance is above the main burning section of the waste bed.The secondary air in front arch forms a vortex at the flue entrance,and the vortex grows with the increase of the inclination angle of rear arch.The front arch has a greater influence on gas phase combustion than the rear arch.When the inclination angle of front arch is 21°and the inclination angle of rear arch is 35°,the volatile gas could be combusted at a high efficiency,the flow field distribution is ideal.

关 键 词：垃圾焚烧炉 高热值 炉膛结构 数值模拟 流场 

分 类 号：TK221[动力工程及工程热物理—动力机械及工程]