Process for prilling ammonium nitrate

Details Process for prilling ammonium nitrate Process for prilling ammonium nitrate

1976-03-18

1978-02-28

Nelson, Peter A.

Plastic and nonmetallic article shaping or treating: processes

Explosive or propellant article shaping or treating

Rolling to form sheet or rod

264 14, 264 37, C06B 2100

Patent

active

040767736

ABSTRACT:
This invention comprises an improvement in a method for preparing ammonium nitrate prills wherein molten ammonium nitrate is prilled in a prill tower in the presence of cooling gas containing a predetermined amount of ammonia to retard thermal dissociation of the ammonium nitrate, thereby to decrease formation of extremely small aerosol particles of ammonium nitrate; the improvement comprises: (a) withdrawing cooling gas from an upper portion of the prill tower; (b) cooling and dehumidifying the withdrawn gas; and (c) recycling the cooled and dehumidified gas to a lower portion of the prill tower.

REFERENCES:
patent: 3388014 (1968-06-01), Russo
patent: 3930911 (1976-01-01), Clark
patent: 3966853 (1976-06-01), Osako et al.
Brandner et al., Vapor Pressure of Ammonium Nitrate, Jour. of Chem. & Eng. Data, vol. 7, No. 2, Apr. 1962, pp. 127 & 128.

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