Patent ID: 6283049
Filing Date: 2001-09-04
Classification: A01C

Abstract:
An anhydrous ammonia injection apparatus for injecting anhydrous ammonia comprising:a tank adapted to contain liquid anhydrous ammonia;a conduit connected in fluid-flow communication with the anhydrous ammonia source for receiving the anhydrous ammonia;a pump connected in fluid-flow communication with the conduit for, variably increasing the pressure of the anhydrous ammonia within the conduit;a terminal outlet connected in fluid-flow communication with the conduit for discharging the anhydrous ammonia from the apparatus; and a restrictive orifice in fluid-flow communication with the conduit downstream from the pump, said restrictive orifice cooperating with the pump to maintain a pressure within the conduit therebetween that is greater than the vapor pressure of the anhydrous ammonia.