火电厂CFB锅炉是近些年被快速推广应用的全新燃烧技术之一，能够实现多次的低温燃烧，同时可以循环应用脱硫剂实施脱硫，从而大大提升脱硫效率（可以达到90%），整体燃烧效率与传统煤粉炉大体相当。近些年我国对绿色环保日益重视，针对氮氧化物的排放制定了更高的标准。虽然CFB锅炉可以一定程度上实现低氮燃烧，但是为了有效满足当今超低污染物排放的要求，需要对其进一步进行技术改造优化。以某发电厂2X300MW的CFB锅炉为例，阐述其技术优化的内容，同时比对分析锅炉的燃烧效率，结果表明，技术优化后，锅炉的燃烧效率明显提升，同时大大了降低氮氧化物的排放量，对于进一步推动火电厂实现绿色环保发展具有参考意义。
关键词: 火电厂 / CFB锅炉 / 燃烧技术 / 优化对策
Abstract:
The CFB（Circulating Fluid Bed）boiler in thermal powerplants is one of the latest combustion technologies that has been prevailing in recent years. It can realize multiple times of low temperature combustion , and at the sametime recycledesulfurizerin sulfur removal , thus greatly improving the desulfurization efficiency（up to90%）. The overall combustion efficiency is roughly equivalent to that of traditional pulverized coal furnace. In recent years , heightened attention has been paid to green development&environmental protection , and higher standards have been formulated for the emission of nitrogen oXides. Though CFB boilers can achieve low nitrogen combustion to a certain eXtent , it still needs to be further modified and optimized to effectively meet today，s requirements of ultra-low pollutant emission. Taking a CFB boiler in a2X300MW powerplant for eXample , the content of its technology optimization is eXpounded , and the combustion efficiencies of the boiler before&after op- timizationare compared and analyzed. The results show that the boiler combustion efficiency is obviously improved after technology optimization , and the emission of nitrogen oXides is greatly reduced , which bears significant reference value for further promoting green and environmental de- velopment of thermal powerplants.
Keywords: thermal powerplant / CFB（Circulating Fluid Bed）boiler / Combustion technology / optimization measures