高、低混合流速循环流化床锅炉及其应用  

Application of Cycled Fluidized Boiler with High-and-Low Mixed Velocity

作　　者：张毅[1] 艾元方[1] 蒋绍坚[1] 刘乐[1] 刘震杰[1] 何相助 

机构地区：[1]中南大学能源科学与工程学院,湖南长沙410083 [2]湖南省节能中心,湖南长沙410007

出　　处：《锅炉技术》2010年第2期48-50,共3页Boiler Technology

摘　　要：一种新型循环流化床锅炉——高、低混合流速循环流化床锅炉工作原理，技术特点及其工程应用。新型锅炉包括上部稀相高速流化区和下部密相低速流化区；设置膜式壁，烟气行程改传统单回程为三回程；设置高分离效率的高温分离器。实践表明：新型锅炉热效率高于85％，飞灰含碳量低至3％～7％，在锅炉节能和旧锅炉改造上具有显著优势。Work principle,technological characteristics and engineering application of a new cycled fluidized boiler named CFB with high-and-low mixed velocity is introduced. There are a dilute phase area with high mixture velocity at the upper region and an airtight phase area with low mixture velocity at the bottom region. The membrane water-walls are set up and the single-return streamline of Flue gas is changed to the three-return streamline. The hightemperature separator is set up to gain higher separate efficiency. Applications show that its

关 键 词：循环流化床锅炉 高速流化床 低速流化床 节能 

分 类 号：TK229.66[动力工程及工程热物理—动力机械及工程]