生物质炉排锅炉配风比和出口含氧量优化  

Optimization of Air Distribution Ratio and Outlet Oxygen Content of Biomass Grate Boiler

作　　者：赵芳芳 隆安 麻克栋 黄修行 ZHAO Fangfang;LONG An;MA Kedong;HUANG Xiuxing(Guangxi Electrical Polytechnic Institute,Nanning 530007,China;Hechi Yizhou Xin'ao Energy Development Co.,Ltd.,Hechi 546399,China)

机构地区：[1]广西电力职业技术学院,广西南宁530007 [2]河池市宜州新奥能源发展有限公司,广西河池546399

出　　处：《红水河》2022年第6期82-87,共6页Hongshui River

基　　金：国家级职教团队创新实践性课题研究项目(SJ2020100101);国家级职业教育教师教学创新团队课题研究项目“基于新能源产业学院建设构架下的教师实践能力提升路径研究”。

摘　　要：生物质能源作为一种重要的可再生能源已被广泛应用于燃烧发电及供热。炉排锅炉焚烧技术是目前用于生物质能发电和供热的主要技术之一,具有低投资、燃料适应性好等特性。笔者以某生物质电厂35 t/h炉排锅炉为研究对象,采用Star CCM+软件建模并进行数值模拟分析,研究4种不同配风比工况下炉内的流动特性、流速分布、湍流动能分布及不同粒径颗粒在炉内的停留时间,得到最佳配风比;通过测定生物质锅炉负荷为75%时不同含氧量下炉膛出口处污染物的排放量,分析含氧量与污染物、烟气温度之间的关系,得到最佳的含氧量控制要求。Biomass energy as an important renewable energy has been widely used in combustion power generation and heating. The grate boiler incineration technology is one of the main technologies for biomass power generation and heating, which has the characteristics of low investment and good fuel adaptability. In this paper, a 35 t/h grate boiler in a biomass power plant was taken as the research object. Star CCM+ software is used for modeling and numerical simulation analysis. The flow characteristics, velocity distribution, turbulent kinetic energy distribution and residence time of particles with different particle sizes in the furnace under four different air distribution ratios are studied, and the optimal air distribution ratio is obtained. By measuring the pollutant emissions at the furnace outlet under different oxygen contents when the biomass boiler load is 75%, the relationship between oxygen content and pollutant and flue gas temperature is analyzed, and the best oxygen content control requirements are obtained.

关 键 词：炉排锅炉 配风比 含氧量 生物质能源 

分 类 号：TM621.2[电气工程—电力系统及自动化] TK6[动力工程及工程热物理—生物能]