Study on Ammonia Production Technology of Denitrification Urea Pyrolysis under All Working Conditions of 1 000 MW Unit
In order to reduce the energy consumption of 1 000 MW unit SCR denitration urea py-rolysis system and improve the operation reliability,on the basis of the research of technical develop-ment direction and transformation cases,the 1 000 MW generator unit SCR denitration urea pyroly-sis system ammonia production technology was innovated.In this technology,ammonia reductants are prepared by using SCR denitrification urea pyrolysis compound heat source in series of flue gas air heat exchanger and electric heater.After the implementation of the SCR denitrification system in a 1 000 MW unit,the unit completely depends on the flue gas-air heat exchanger to prepare ammo-nia gas in normal operation condition(45%—100%rated load),and the electric heater is added appropriately to prepare ammonia gas when the unit starts and stops and under peak load(0-45%rated load).It can reduce the coal consumption of the unit by 0.24 g/(kW·h),and the actual net income reaches 1,626,000 yuan per year,realizing safe and reliable,economical ammonia production and ultra-low emission under all working conditions and loads,and pro-moting high-quality development of the enterprise.
denitration urea pyrolysiselectric heaterflue gas heatingcomposite heat source
万方数据
维普
