摘要
通过提高压力协同脱除NO和SO2是纯化富氧燃烧烟气的新方法。利用CHEMKIN软件构造211步加压脱除NO和SO2的反应机理,并利用ROP系数分析法和影响参数分析法确定O2在高压下氧化NO、SO2的重要步骤和影响参数。模拟表明在气相情况下,提高反应压力、降低反应温度有助于NO向NO2的转化,结合湿法烟气脱硝的方法,可有效地将NO转化为HNO3进行回收利用。但对于SO2的氧化反应,加压均相脱除效果并不显著。根据反应机理,提出添加少部分臭氧可加速反应进程的设想,并利用CHEMKIN软件进行模拟,结果表明NO向NO2转化的转化率和转化速率都显著提高,但臭氧对SO2的氧化依然不明显。
Compression is a novel method of purification of oxyfuel-derived CO2. A 211-step reaction mechanism for the removal of NO and SO2 from the raw CO2 was contrasted and the most important steps and influent parameters during sour compression process were impacted. This gas-phase simulation indicated that increasing the pressure and reducing the reaction temperature can help the conversion of NO to NO2 , and finally remove as HNO3 by contracting with water. But the oxidation reaction of SO： was not significant under the gas phase simulation. According to the kinetics mechanism, the idea of adding O3 to accelerate the reaction process was proposed. The results showed that O3 did accelerate the NO2 conversion, but still had no evident influence on SO2 oxidation.
出处
《能源工程》
2013年第2期53-58,共6页
Energy Engineering
