Process and device for the preparation of a product...

Details Process and device for the preparation of a product... Process and device for the preparation of a product...

C - Chemistry, Metallurgy

01

B

23/384, 23/66

C01B 25/28 (2006.01) B01J 10/00 (2006.01)

Patent

CA 1118183

ABSTRACT OF THE DISCLOSURE Ammonium orthophosphate products are prepared by reacting ammonia and phosphoric acid together at high speed under vigorous mixing conditions by spraying the reactants through a two-phase, dual coaxial mixer/ sprayer and separately controlling the supply and axial outflow rate of the phosphoric acid at 1 to 10 m/sec. and the outflow rate of ammonia at 200 to 1000 m/sec. (N,T.P.). Thorough mixing and a homogeneous product is obtained by directing the outflow spray into a coaxial cylindrical reaction chamber of a specified size with respect to the diameter of the outer most duct of the sprayer/mixer. The product may be granulated on a mov- ing bed of granules and adjusted in respect of the NH3 to H3PO4 content by changing the concentration of the phosphoric acid and/or supplying additional ammonia to the granulation bed.

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