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-tec          

選擇性非催化還原技術（SNCR）

選擇性非催化還原法是一種不使用催化劑，在 850～1100℃溫度范圍內還原NOx的方法。最常使用的藥品為氨和尿素。

一般來說，SNCR脫硝效率對大型燃煤機組可達 25%～40% ,對小型機組可達 80%。由于該法受鍋爐結構尺寸影響很大，多用作低氮燃燒技術的補充處理手段。其工程造價低、布置簡易、占地面積小，適合老廠改造，新廠可以根據(jù)鍋爐設計配合使用。