华电技术 ›› 2019, Vol. 41 ›› Issue (1): 32-35.

• 研究与开发 • 上一篇    下一篇

基于CFD的空气分级技术应用研究

  

  1. 华电电力科学研究院有限公司,杭州〓310030
  • 出版日期:2019-01-25 发布日期:2019-02-14

Application research of air staging technology based on CFD

  1. Huadian Electric Power Research Institute Company Limited, Hangzhou 310030, China
  • Online:2019-01-25 Published:2019-02-14

摘要:

基于Fluent软件对450t/h煤粉炉燃烧过程开展数值模拟研究。模拟结果表明,不同主燃区空气占比对炉膛出口的氧量、烟温及NOx质量浓度影响较大,适当降低主燃区空气量可以有效降低炉膛出口NOx排放质量浓度、同时CO体积分数和炉膛出口的排烟温度略有升高。

关键词:

Abstract:

Based on Fluent software, the numerical simulation of the combustion process of 450t/h pulverized coalfired boiler is carried out. The simulation results show that the different air ratios of main combustion zones have a great influence on the oxygen content at furnace exit, smoke temperature and NOx concentration. Properly reducing the air volume in the main combustion zone can effectively reduce the NOx emission concentration at the furnace exit.The CO concentration and exhaust gas temperature at furnace exit rises slightly at the same time.

Key words: