Chemistry of inorganic compounds – Phosphorus or compound thereof – Oxygen containing
Patent
1979-05-29
1982-02-02
Vertiz, O. R.
Chemistry of inorganic compounds
Phosphorus or compound thereof
Oxygen containing
422224, 423313, C01B 2528
Patent
active
043139183
ABSTRACT:
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 outermost duct of the sprayer/mixer. The product may be granulated on a moving bed of granules and adjusted in respect of the NH.sub.3 to H.sub.3 PO.sub.4 content by changing the concentration of the phosphoric acid and/or supplying additional ammonia to the granulation bed.
REFERENCES:
patent: 3419378 (1968-12-01), Kearns
patent: 3730700 (1973-05-01), Groenveld
patent: 3917811 (1975-11-01), Grout et al.
patent: 4009245 (1977-02-01), Hudson et al.
patent: 4104362 (1978-08-01), Hahn et al.
patent: 4166840 (1979-09-01), Chapman
Hendriks Petrus F. A. M.
Hoek Cornelis
Jansen Arie
van den Berg Willem B.
Langel Wayne A.
Unie Van Kunstmestfabrieken, B.V.
Vertiz O. R.
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