670th四角切圆锅炉反切消旋的数值模拟和工程实践.pdf

25 卷 18 期 中 国 电 机 工 程 学 报 Vol.25 No.18 Sep. 2005 2005 年9 月 Proceedings of the CSEE 2005 Chin.Soc.for Elec.Eng. 文章编号：0258-8013 (2005) 18-0109-07 中图分类号：TK224 文献标识码：A 学科分类号：47020 670t/h 四角切圆锅炉反切消旋的数值模拟和工程实践 1 1 2 2 1 姜秀民 ，崔志刚 ，马玉峰 ，王 辉 ，张超群 ( 1. 上海交通大学机械与动力工程学院, 上海市 闵行区 200240； 2. 哈尔滨工业大学能源科学与工程学院，黑龙江省 哈尔滨市 150001；） NUMERICAL SIMULATION AND ENGINEERING PRACTICE OF A 670t/h CORNER TANGENTIAL BOILER WITH REVERSE-TANGENT AND SWIRLING-ELIMINATION 1 1 2 2 1 JIANG Xiu-min , CUI Zhi-gang , MA Yu-feng , WANG Hui , ZHANG Chao-qun ( 1. School of Mechanical Engineering, Shanghai Jiaotong University, Minhang District,Shanghai 200240, China; 2. School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001,Heilongji ang Province,China) ABSTRACT: With the 670 t/h corner tangential boiler serving 和充满系数在反切层降低，炉内气流混合强度变化不大，对 an obj ect of study, reverse-tangent cases at tertiary air and 炉内主气流的空气动力结构影响不大；炉膛温度场和氧气浓 OFA(Over flow air) were performed by using combustion 度场显示，反切 改善了炉内温度分布，对主燃烧区的影响 numerical simulation program. The studying results indicates: 较小；壁面高温区减少，降低了结焦可能性；反切降低水平 the revolution of in-furnace flow field is weakened because of 烟道入口左右侧温差，削弱了水平烟道入口的扭转残余，减 the reverse-tangent of tertiary air, the relative diameter of the