System and process for applying ammonia to soil

Details System and process for applying ammonia to soil System and process for applying ammonia to soil

A - Human Necessities

01

C

A01C 23/04 (2006.01) A01C 23/02 (2006.01)

Patent

CA 2229852

The present invention is generally directed to a system and to a process for dispensing a volatile liquid fertilizer and particularly ammonia into a field. The ammonia is placed in a vessel under sufficient pressure to maintain a substantial portion of the ammonia in a liquid form. From the pressurized vessel, the ammonia is fed to a distribution manifold where it is ultimately injected into a soil through a plurality of dispensing tubes. According to the present invention, a constant pressure flow rate control device is placed at each dispensing tube for metering the amount of ammonia fed to the soil. In particular, the flow control devices allow ammonia to be dispensed from the system while maintaining sufficient back pressure within the distribution manifold to maintain the ammonia in a liquid form. By preventing vaporization of the ammonia within the system, uniform and accurately controlled flow rates can be dispensed from the dispensing tubes.

La présente invention porte en général sur un système et un procédé de distribution d'un engrais liquide volatile, plus précisément d'ammoniac, dans un champ. L'ammoniac est placé dans un récipient soumis à une pression suffisante pour maintenir une partie importante de l'ammoniac sous forme liquide. € partir du récipient pressurisé, l'ammoniac est acheminé vers un manifold d'où il est ultimement éjecté dans le sol par de nombreux tubes de distribution. Selon cette invention, un dispositif de réglage du débit de pression constante est placé sur chaque tube de distribution afin d'évaluer la quantité d'ammoniac épandue sur le sol. Plus précisément, les dispositifs de réglage du débit permettent d'épandre l'ammoniac à partir du système, tout en maintenant une contre-pression suffisante à l'intérieur du manifold de distribution pour conserver l'ammoniac dans une forme liquide. En prévenant l'évaporation de l'ammoniac dans le système, on peut épandre des jets uniformes et réglés avec précision depuis les tubes de distribution.

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