Denitration reducing agent formed by urea pyrolysis has advantages of stability and non-toxicity,but the low pyrolysis temperature will cause deposition in thermal decomposition furnace.Component analysis on deposition appeared on urea pyrolysis furnace of boiler in No.1-No.4 units for Beijing Jingneng Thermal Power Co.,Ltd.was conducted.Countermeasures were put forward,such as enlarging the pressure and flow of desalted water,decreasing the pyrolysis furnace case temperature range from 105-120 ℃ to 80-90 ℃...