Stabilized capillary microjet and devices and methods for...

B - Operations – Transporting – 05 – B

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B05B 7/06 (2006.01) B01F 3/04 (2006.01) B01F 5/04 (2006.01) B05B 7/04 (2006.01) B05B 7/08 (2006.01) F02M 43/04 (2006.01) F02M 67/10 (2006.01) F02M 69/04 (2006.01) F23D 11/10 (2006.01) G01N 21/01 (2006.01) G01N 15/14 (2006.01)

Patent

CA 2314979

The invention is directed to a stable capillary microjet and a monodisperse aerosol formed when the microjet dissociates. A variety of devices and methods are disclosed which allow for the formation of a stream of a first fluid (e.g. a liquid) characterized by forming a stable capillary microjet over a portion of the stream wherein the microjet portion of the stream is formed by a second fluid (e.g. a gas). The second fluid is preferably in a different state from the first fluid-liquid-gas or gas-liquid combinations. However, the first and second fluids may be two different fluids in miscible in each other. The stable capillary microjet comprises a diameter dj at a given point A in the stream characterized by formula (I): wherein dj is the diameter of the stable microjet, ≅ indicates approximately equally to where an acceptable margin of error is ~ 10 %, 1 is the density of the liquid and .DELTA.Pg is change in second fluid pressure from the second fluid pressure at a low velocity region (feeding region) upstream of point A to the second fluid pressure at point A.

L'invention concerne un microjet capillaire stable et un aérosol monodispersé, formé par la dissociation de ce microjet. L'invention concerne également différents dispositifs et procédés permettant de former un courant d'un premier fluide (par exemple un liquide), un microjet capillaire stable étant créé sur une partie de ce courant. La partie microjet de ce courant est formée par un second fluide (par exemple un gaz), ce second fluide se présentant de préférence sous un état différent du premier fluide (notamment des combinaisons liquide-gaz ou gaz-liquide). Néanmoins, le premier et le second fluides peuvent être deux fluides différents, non miscibles l'un avec l'autre. Le microjet capillaire stable de cette invention présente un diamètre d¿j? à un point A donné dans le courant caractérisé par la formule (I): dans laquelle d¿j? représente le diamètre du microjet stable, ≅ indique approximativement là où la marge d'erreur acceptable est égale à ± 10 %, p¿1? représente la densité du liquide, et ?P¿g? représente le changement de pression du second fluide, entre la pression du second fluide dans une zone à faible débit (zone d'alimentation) en amont dudit point A et la pression du second fluide au niveau de ce point A.

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