NOVELTY - Production of urea involves pressurizing carbon dioxide at 125 degrees C and 20.5 MPa and ammonia at 45-60 degrees C and 20.5 MPa, pumping to urea reactor (1), reacting at 188-190 degrees C and 1.75 MPa, transferring to flash evaporation pre-separator (2), transferring to preheater (3), transferring to pressure strippers (4, 5), collecting condensate to pressure stripper level tanks (7, 8), utilizing steam heat in steam heater (18), transferring gas to dimethyl liquid preheater (6), vacuum steam heating in flash evaporation preheater (9), transferring to coolers (12, 13) and transferring to liquid separator (14).    USE - Method for producing urea (claimed).    ADVANTAGE - The method maximizes heat recovery and reduces energy consumption.    DETAILED DESCRIPTION - Production of urea comprises pressurizing carbon dioxide at 125 degrees C and 20.5 MPa and ammonia at 45-60 degrees C and 20.5 MPa, pumping to urea reactor (1), reacting at 188-190 degrees C and 1.75 MPa, transferring to flash evaporation pre-separator (2), transferring to preheater (3), transferring to pressure strippers (4, 5), collecting condensate to pressure stripper level tanks (7, 8), utilizing steam heat in steam heater (18), transferring gas to dimethyl liquid preheater (6), vacuum steam heating in flash evaporation preheater (9), transferring to coolers (12, 13), transferring to liquid separator (14), pressurizing liquid at 90-95 degrees C and 20.5 MPa, transferring gas to absorption tower (15), ammonia scrubbing at 45 degrees C until carbon dioxide content is less than 100x 10-6, transferring to ammonia cooler (16), recovering heat in evaporative cooler (11), transferring to flash evaporation separator (10), washing, transferring to evaporation heater level tanks (20, 23), transferring to evaporation heaters (17, 21), transferring to evaporation separators (19, 22), collecting to evaporation heater level tanks (20, 23), heating at 130-135 degrees C and 0.033 MPa, compressing at 140 degrees C, granulating, weighing and packaging.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of urea production system.    Urea reactor (1)    Flash evaporation pre-separator (2)    Preheater (3)    Pressure strippers (4, 5)    Dimethyl liquid preheater (6)    Pressure stripper level tanks (7, 8)    Flash evaporation preheater (9)    Flash evaporation separator (10)    Evaporative cooler (11)    Suction coolers (12, 13)    Liquid separator (14)    Absorption tower (15)    Ammonia cooler (16)    Evaporation heaters (17, 21)    Steam heater (18)    Evaporation separators (19, 22)    Evaporation heater level tanks (20, 23)