电力科技与环保Issue(5)：26-29,4.
SCR 脱硝系统不均匀喷氨方案的数值模拟研究
CFD simulation study of nonuniform ammonia injection in SCR denitrification system
吴学智 1聂会建 1鞠付栋 1孙永斌1
作者信息
- 1. 中国电力工程顾问集团华北电力设计院工程有限公司，北京 100120
- 折叠
摘要
Abstract
The ammout of ammonia injection of AlG(Ammonia lnjection Grid)is one of the key points of SCR (Selective Catalytic Reduction)system design with nonuniform ammonia injection. ln order to reduce workload of confirming the value of ammonia injection flow rate of AlG,a caculated method of the ammount of ammonia injection based on iteration was proposed and applied in numerical simulation work of a typical pulverized coal boiler SCR denitrification reconstruction project. The results showed that iteration method was effective and ca-pable to be applied in SCR system nonuniform ammonia injection design. During 3 ~ 5 iterations,the velocity and ammonia distribution of 0. 5 m cross section above the first catalyzer layer bacame more and more homoge-neous and final y met the requirements of SCR system numerical simulation. Meanwhile,because of saving some internals like cylinders in SCR system by using nonuniform ammonia injection,system complexity and pressure drop can be reduced as wel .关键词
SCR/不均匀喷氨/数值模拟/脱硝Key words
SCR/nonuniform ammonia injection/CFD simulation/denitrification分类
资源环境引用本文复制引用
吴学智,聂会建,鞠付栋,孙永斌..SCR 脱硝系统不均匀喷氨方案的数值模拟研究[J].电力科技与环保,2014,(5):26-29,4.
