文丘里棒层在氨喷射系统中的应用与数值模拟  

APPLICATION OF VENTURI STICK TIER IN AMMONIA INJECTION GRID(AIG) AND NUMERICAL SIMULATION THEREOF

作　　者：陈凯华[1] 宋存义[1] 邱露[1] 李强 

机构地区：[1]北京科技大学土木与环境工程学院,北京100083 [2]国电集团公司技术经济咨询中心,北京100018

出　　处：《热力发电》2009年第2期32-36,共5页Thermal Power Generation

基　　金：北京市教育委员会共建项目建设计划资助项目(XK100080432);高等学校博士学科点专项科研基金(20060008001)

摘　　要：提出了在氨喷射(AIG)系统中利用文丘里棒层注入氨气的方法,并将其与传统的氨气注入方式进行了对比。结果表明,文丘里棒层注入氨气的方法可简化氨注射系统;采用缝隙注入,可降低喷嘴堵塞概率;安装方便,调试简单,压力损失较小。运用流体力学的基本理论,对文丘里棒层工作段应用流体力学商业计算软件Fluent进行流场、压力降和混合效果的数值计算,揭示了其内部流动特征。A method of injecting ammonia gas into ammonic injection grid（ AlG） system by using Venturi stick tier has been put for- ward,and a comparison with traditional ammonia gas injecting mode being made. The method of injecting ammonia gas by using Ven- turi stick tier simplified the ammonia injecting system;adopting slit injection, decreased the probabality of clogging in nozzle;and being convenient to be installed, being simple in debugging and smaller in pressure loss. Utilizing the basic theory of hydrodynamics,the nu- merical ealulation of flow field,pressure drop,and mixed effect in working section of the Venturi stick tier has been carried out using FLUENT software,revealing the inner flow characteristics in the Venturi stick tier.

关 键 词：脱硝 氨喷射 文丘里棒层 混合 流场 

分 类 号：TK222[动力工程及工程热物理—动力机械及工程]