Hebei Yaoyi Energy Conservation and Environmental Protection Equipment Manufacturing Co., Ltd. is located in Suning County, Hebei Province. It is an innovative and energetic high-tech enterprise with energy-saving and environmental protection equipment, waste heat recovery, organic waste gas treatment, circulating water treatment, dust collector equipment, oil field energy-saving, biomass burner, workshop cooling, dryer, intelligent energy-saving equipment, and other energy-saving products. Development, manufacturing and sales as one of the high-tech companies.
近些年来，环境问题已经成了一个世界性难题，如何改善有污染的自然环境，这需要一些有污染的厂子安装一系列脱*脱硝设备，比如有需要锅炉的工厂要安装脱*脱硝设备，可以使排烟量达到标准，减少对空气的污染，使*和氮的含量降到低。
该方法首先将含有氨基的还原剂喷入炉膛内适合的温度区域。高温下，还原剂迅速分解为氨并于烟气中的氮氧化物进行还原反应生成氮气和水。该法以炉膛为反应器，投资相对较低，施工期短。不足之处在于该法获得的脱硝效果不如催化还原法(SCR)，SNCR的脱除效率达40-75%。
