Ezperimental and Simulation Study of SNCR Process with CO as Additive
The experimental and simulation study of the influence of CO as additive to the SNCR process had been carried out. The experiments had been carried out on the self-made SNCR reactor and simulated by Chemkin4.1. The experimental result shows that reversal jetting at the center position of the reactor with the improved TB-series nozzle had achieved a much better mixing effect of jet flow and bulk flow than lateral wall jetting. TB-series nozzle was made of corundum, so it had avoided the catalytic decomposition of NH3 at high temperature by steel. The optimum reaction temperature had been shifted from 900 ℃ to 850 ℃ with CO as additive and NOx removal efficiency under those conditions was 82.53% and 75.06% respectively with NH3/NOx=1.25. Taken NOx removal efficiency more than 50% as standard, the temperature window of the process is 865–965 ℃ without CO as additive and 795–923 ℃with CO as additive. At the temperature lower than 875 ℃ the addition of CO improved NOx removal efficiency. At a certain temperature lower than 875 ℃, NOx removal efficiency increases at first and then decreases with the increasing of the addition of CO. With decreasing of the temperature, the needed addition of CO increases to get the maximum NOx removal efficiency with CO as additive at certain temperature lower than 875 ℃. Through the reaction parameters’ modification of some reactions, the simulation results of CO as additive are consistent with the experimental results basically and the modification has no influence to the simulation of NOx reduction without CO as additive.
SNCR mizing CO as additive simulation Chemkin4.1
LIANG Xiujin ZHONG Zhaoping JIN Baosheng LI Weiling WEI Hongge GUO Houkun
School of Energy & Environment,Southeast University,Nanjing 210096,Jiangsu,China
国际会议
2009 International Symposium on Environmental Science and Technology(2009环境科学与技术国际会议)
上海
英文
873-877
2009-06-02（万方平台首次上网日期，不代表论文的发表时间）