Factors Affecting Urea Granulation Tower Simplification of Ventilation

Li Li Wang; Guo Zhong Wu; Dong Li

doi:10.4028/www.scientific.net/AMM.501-504.2293

Paper Titles

Finite Element Analysis of Thermoelectric Refrigeration on the Heat Surface of the Chip Packaging
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The Numerical Simulation of Thermal Environment of Strawberry Greenhouse in Natural Ventilation
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Performance Analysis on a Solar-Driven Air-Cooled Ejector Refrigeration System for Air-Conditioning Using Ammonia as Refrigerant
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Numerical Simulation on Adding Chamfer Angle of Direct Air Cooling Exhausted Duct for Large Thermal Power Generator
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Factors Affecting Urea Granulation Tower Simplification of Ventilation
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Boundary Layer Wind Characteristics over Urban Area
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Stimulation Study over the Capacity of Air Distribution to Eliminate the Contaminant in Isolation Wards
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Numerical Analysis on the Heat Transfer Characteristics of the Radiator in a Heating Room
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Analysis of Selecting Cooling Load Coefficient Methods
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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 501-504Factors Affecting Urea Granulation Tower...

Factors Affecting Urea Granulation Tower Simplification of Ventilation

Abstract:

Currently, most of the domestic fertilizer unit, granulation tower basically using natural ventilation, granulation tower granulation process is ejected molten urine through the nozzle to cool down after melt crystallization (phase transition), cooling 3 process^[1]. The beginning step is cooling stage of liquid urea. The second step is liquid urea into solid urea particles. The last step is solid urea paticles cooling process with long drop distance. In the process of landing urea crystals, the releasing heat is taken into the cold air. The average air rate of natural ventilation in the tower is 0.4-0.8m/s. And the air rate of mechanical ventilation prilling tower is 0.6-1.2m/s. Landing time of urea particles from nozzle to Scraper is about 5-10m/s.