配风对垃圾焚烧炉温度场影响的模拟研究  

Simulation Study on the Impact of Temperature Field in MSW Incinerator under Air Distribution

作　　者：李龙君[1] 马晓茜[1] 余昭胜[1] 胡志锋[1] 李茂东 马括 倪进飞 

机构地区：[1]华南理工大学电力学院,广东广州510640 [2]广州市特种承压设备检测研究院,广东广州510100

出　　处：《环境科学与技术》2013年第10期39-42,共4页Environmental Science & Technology

基　　金：国家质检总局项目(2011QK319);市科信局项目(2012J4300135)

摘　　要：利用FLUENT软件对750 t/d炉排炉进行模拟,分析了不同一、二次风和不同二次风风量比工况下炉内温度场,第一烟道入口、出口温度和烟气停留时间等主要参数。研究发现一、二次风量比为0.688∶0.312,两排二次风量比为16∶1时焚烧炉运行较优,烟气停留时间达到2.23 s,温度分布均匀,无局部高温情况,能有效防止二次污染和高温腐蚀。而在此基础上增大二次风量,会提高第一烟道入口、出口温差,温差最大增幅分别为3.03%、6.14%。而改变两排二次风量比则会扩大烟道内高温区域,影响炉内温度分布。750 t/d grate furnace was simulated with FLUENT software, and major parameters of temperature field in the fur- nace, temperature of the first flue entrance and exit as well as gas residence time under the condition of different primary and secondary air and different secondary air volume ratios. It was found that the incinerator operated better when the primary and secondary air volume ratio was 0.688：0312 and the two row of secondary air volume ratio was 16：1.The.gas residence time was 2.23 s, and the temperature distribution was uniform, there was no localized hyperthermia, which could effectively pre- vent the secondary pollution and high temperature corrosion. If the secondary air volume was increased, the temperature dif- ference of the entrance and exit in the first flue would be improved, and the maximum rate of temperature difference was 3.03% and 6.14% respectively. High temperature area in the flue would be expanded, and furnace temperature distribution would be affected if the two rows of secondary air volume ratio were changed.

关 键 词：炉排炉 模拟 二次污染 高温腐蚀 

分 类 号：X701[环境科学与工程—环境工程]