Two-phase spraying device and reaction chamber for the preparati

Chemical apparatus and process disinfecting – deodorizing – preser – Chemical reactor – Including internal mixing or stirring means

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239472, 239501, 261 76, 261 79A, 261DIG75, 366338, 423310, B01F 304

Patent

active

043703046

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: 1183098 (1916-05-01), Merrell et al.
patent: 2183561 (1939-12-01), Hamblin
patent: 2411186 (1946-11-01), Boeckeler
patent: 2990165 (1961-06-01), Joseph
patent: 3050374 (1962-08-01), Burt et al.
patent: 3833719 (1974-09-01), Kuerten et al.
patent: 3984323 (1976-10-01), Evens
patent: 4179222 (1979-12-01), Strom et al.

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