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.
择性非催化还原技术（SNCR）
选择性非催化还原法是一种不使用催化剂，在 850～1100℃温度范围内还原NOx的方法。常使用的药品为氨和尿素。
一般来说，SNCR脱硝效率对大型燃煤机组可达 25%～40% ,对小型机组可达 80%。由于该法受锅炉结构尺寸影响很大，多用作低氮燃烧技术的补充处理手段。其工程造价低、布置简易、占地面积小，适合老厂改造，新厂可以根据锅炉设计配合使用。
