煤与污泥的循环流化床富氧燃烧  

Oxygen-Enriched Combustion of Sewage Sludge and Coal in CFB

作　　者：辛胜伟[1] 卢啸风[1] 刘汉周[1] 曾兵[1] 

机构地区：[1]重庆大学动力工程学院,重庆400044

出　　处：《燃烧科学与技术》2010年第1期92-95,共4页Journal of Combustion Science and Technology

基　　金：重庆市自然科学基金资助项目(2006BB6224)

摘　　要：结合污泥的特性与富氧燃烧技术的优点,在一个内径为100mm的循环流化床焚烧炉内进行煤与污泥的富氧燃烧试验.试验分析了不同煤泥质量比,在氧体积分数为21%～35%环境下的燃烧特性以及送风含氧量、床层温度对烟气成分的影响.结果表明:不同质量比的燃料在不同氧气氛围的燃烧特性不同;当给料量恒定时,随着送风含氧量的增大,总风量减少,炉膛的温度逐渐升高,烟气中SO2与NOx浓度都呈增大的趋势,这有利于SO2与NOx的脱除;NOx体积分数随床层温度的升高逐渐增加.The experimental research on the advantages of oxygen-enriched combustion and the characteristics of sewage sludge was carried out in a CFB incinerator, the diameter of whose furnace is 100 mm. The experimental analysis was made on the combustion characteristics of fuels with different mass rate under the oxygen concentrations of 21%-35%. The effects of oxygen content and fluid bed temperature on composition in flue gas were discussed. The results show that combustion characteristics vary with different mixing rate between coal and sludge under different oxygen atmosphere. With constant amount of fuel and increase of oxygen content, the total air volume decreases, the furnace temperature increases gradually and SO2 and NOx concentrations tend to increase, which is beneficial to the removal of SO2 and NOx. NO, concentration increases gradually as fluid bed temperature increases.

关 键 词：混烧 煤与污泥 循环流化床 富氧燃烧 

分 类 号：TK16[动力工程及工程热物理—热能工程]