Method and apparatus for the adiabatic expansion of liquid anhyd

Details Method and apparatus for the adiabatic expansion of liquid anhyd Method and apparatus for the adiabatic expansion of liquid anhyd

1979-10-19

1982-01-12

Bashore, S. Leon

Chemistry: fertilizers

Processes and products

Inorganic material

71 641, 71 648, 71903, C05C 300

Patent

active

043103448

ABSTRACT:
Cold anhydrous ammonia, preferably cold liquid anhydrous ammonia at substantially ambient or atmospheric pressure is applied to feed grains, forages and anaerobically fermentable plant material to supply thereto and provide therein non-protein nitrogen (NPN). The cold anhydrous ammonia is obtained by supplying a stream of ambient temperature, pressurized anhydrous liquid ammonia to an expansion chamber for expansion therein to provide the cold anhydrous ammonia. Cold anhydrous ammonia, preferably substantially only cold liquid anhydrous ammonia, is recovered from the expansion chamber operated under substantially adiabatic conditions, at a temperature in the range -30.degree. F. to about -17.degree. F. and at substantially ambient or atmospheric pressure, such as at a pressure in the range 1 pound per square inch below atmospheric pressure up to about 5 pounds per square inch atmospheric pressure.

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patent: 3538867 (1970-11-01), Every et al.
patent: 3556027 (1971-01-01), Ammann
patent: 4069029 (1978-01-01), Hudson

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