Prilling

Details Prilling Prilling

C - Chemistry, Metallurgy

05

C

18/505

C05C 1/02 (2006.01) C05C 9/00 (2006.01)

Patent

CA 1186861

Abstract of the Disclosure The emission of fumes is suppressed from a prilling tower for producing prills of ammonium nitrate or urea by conducting particles from a spray of a melt of the material countercurrent through a stream of air. The spray of the material, as it leaves the prilling head is passed through a stagnant atmosphere of ammonia. In addition, the particles of the spray are coated with ammonia and their cooling by the countercurrent air stream is accelerated. To produce the ammonia atmosphere, a shroud is provided about the spray nozzle or nozzles into which gaseous ammonia is injected.

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