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The paper intended a case study of pollution control through prilling tower and other equipment, in urea plant the prilling tower is main pollution contributors .In India urea production through prilling route is 100 % no granulation is used. A mathematical hydrodynamics, heat, and mass transfer between the urea and the cooling air are developed in natural prilling tower. The height of the prilling tower is about 80 meter to 110 meter according to plant load and weather condition. The formation of biuret & triuret is the loss of ammonia is the source of pollution in this process.The prilling tower is the source of pollution in form of dust and ammonia and that can be control by simple technic also energy saving in terms of ammonia saving, ammonia is the harmful pollutant if you vent and useful product if you recovers. The company developed many techniques to reduced pollution after establishment of these modifications and techniques, prilling tower emission are safer than the local environment requirements and company were received many environmental awards.