燃煤锅炉NO_x减排方案模糊评价

Fuzzy Evaluation of NO_x Emission Reduction of Coal Fired Boilers

对于更严格的电厂燃煤锅炉NOx排放标准,须采用多种脱硝技术或进行优化升级。利用模糊层次分析法,对4种脱硝技术进行综合评价。计算表明:FeⅡEDTA湿法络合脱硝技术的综合评价最好,这项技术的关键在于吸收液的再生和利用;电子束照射法脱硝技术的关键在于降低自身耗电量;杂多酸法脱硝技术适合搭配其他脱硝工艺使用;脉冲电晕等离子体法脱硝技术中脉冲电源的性能有待优化。

In order to cope with more stringent NO_x emission requirements of coal fired boilers in power plants,a variety of denitration techniques or optimization upgrades are required.Four kinds of denitration technology were evaluated by using fuzzy comprehensive evaluation,computation shows that FeⅡEDTA wet process complexometric denitration method is much better than three other ways,the technology is the key to wastes water recycling;the emphasis of the electron beam method of denitration is to reduce power consumption;Polyoxometalates method is suitable to be used with other denitration technology;the performance of pulse power in Pulsed Corona Discharge Plasma is to be further optimized.