Gas fumigation method and system

Details Gas fumigation method and system Gas fumigation method and system

A - Human Necessities

01

M

A01M 13/00 (2006.01) A01M 17/00 (2006.01) A23L 3/3418 (2006.01)

Patent

CA 2232485

A method and system are disclosed for fumigating a region with a non- flammable gaseous mixture including phosphine. A sensor senses the concentration of phosphine for atmosphere of the region and a flow controller controls flow to the region in response to the sensed concentration. A recyclingpassage removes a portion of the atmosphere from the region and returns the atmosphere to create a recycle flow through the region. In addition, a gas mixing system is provided to supply the non-flammable mixture by mixing phosphine from a phosphine source and an inert substance from an inert substance source.

Divulgation d'une méthode et d'un système pour soumettre une région à la fumigation avec un mélange gazeux non inflammable comprenant de la phosphine. Un capteur détecte la concentration de phosphine dans l'atmosphère de la région, et un régulateur de débit contrôle l'écoulement des gaz dans la région en fonction de la concentration détectée. Un passage de recyclage retire une portion de l'atmosphère de la région et la retourne pour créer un courant de recyclage dans la région. En outre, un système de mélange des gaz est prévu pour fournir le mélange non inflammable en mélangeant de la phosphine d'une source de phosphine et une substance inerte d'une source de substance inerte.

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