基于熔铝炉的高效生物质气化燃烧系统的研究和设计  

Research and design of high efficient biomass gasification and combustion system based on aluminum melting furnace

作　　者：张圆明 刘效洲[2] 肖伟 黄世坚 ZHANG Yuan-ming;LIU Xiao-zhou;XIAO Wei;HUANG Shi-jian

机构地区：[1]广州能源检测研究院,广东广州511447 [2]广东工业大学,广东广州510006

出　　处：《节能》2023年第3期73-76,共4页Energy Conservation

基　　金：广州市市场监督管理局科技项目“基于生物质低氮气化燃烧系统的能效测评研究”(项目编号:2021kj30)。

摘　　要：针对目前熔铝炉排烟温度高、氮氧化物排放量多和生物质气化炉气化率低等问题,研究设计熔铝炉专用生物质气化燃烧系统。在生物质气化炉中,生物质固体废料以及利用熔铝炉烟气余热产生的水蒸气和热空气混合反应,生成生物质燃气,通过吸附二氧化碳、熔铝炉烟气加热,形成高热值生物质气;熔铝炉烟气将冷空气加热成高温热空气,再将烟气和高温热空气混合形成设定含氧量的助燃风,在熔铝炉中助燃风与高热值生物质气混合燃烧。熔铝炉与生物质气化炉耦合运行,梯级利用熔铝炉烟气余热,生物质气化炉气化效率提高了18%,制取的生物质燃气价格远低于天然气,显著降低了熔铝炉运行成本,系统综合能效大大提高。Aiming at the problems of high exhaust gas temperature,high NOx emission of aluminum melting furnace and low gasification rate of biomass gasifier,a special biomass gasification and combustion system for aluminum melting furnace is studied and designed.In the biomass gasifier,the biomass solid waste is mixed with water vapor and hot air which are generated by the exhaust gas waste heat of aluminum melting furnace to generate biomass gas,which is refined to remove carbon dioxide and heated by aluminum melting furnace exhaust gas to form high calorific value biomass gas.The exhaust gas of aluminum melting furnace also heats the cold air into high-temperature hot air,and then mixes the exhaust gas and high-temperature hot air to form the combustion air with set oxygen content,the combustion air is mixed with high calorific value biomass gas to combust in the aluminum melting furnace.The aluminum melting furnace is coupled with the biomass gasifier,and the gasification efficiency of the biomass gasifier is increased by 18%after the step utilization of the waste heat of the aluminum melting furnace exhaust gas.The price of biomass gas is much lower than that of natural gas,which significantly reduces the operation cost of the aluminum melting furnace,the comprehensive energy efficiency of the system is also greatly improved.

关 键 词：熔铝炉 生物质气化炉 燃烧系统 

分 类 号：TK16[动力工程及工程热物理—热能工程]