Method and apparatus for producing slush nitrogen

Details Method and apparatus for producing slush nitrogen Method and apparatus for producing slush nitrogen

C - Chemistry, Metallurgy

01

B

C01B 21/04 (2006.01) B01J 3/00 (2006.01)

Patent

CA 2546183

A method for producing slush nitrogen, characterized in that it comprises spraying liquid nitrogen from a nozzle into a vessel kept under a reduced pressure with a nozzle diameter and a spraying pressure being so adjusted as for the liquid nitrogen to maintain the form of droplets, to thereby form liquid nitrogen fine particles having a uniform particle diameter and disperse them in the vessel, vaporizing nitrogen from the droplet particles during the stay thereof in the space of the vessel, to solidify liquid nitrogen particles by vaporization latent heat and form fine solid nitrogen particles having a uniform particle diameter, and mixing the solid nitrogen particles with liquid nitrogen.

Procédé de fabrication d~azote pâteux, caractérisé en ce qu~il consiste à pulvériser de l~azote liquide à partir d~une buse dans un récipient maintenu sous pression réduite avec un diamètre de buse et une pression de pulvérisation ajustés de façon à ce que l'azote liquide conserve la forme de gouttelettes, pour ainsi former de fines particules d'azote liquide ayant un diamètre particulaire uniforme et les disperser dans le récipient, en vaporisant l~azote à partir des particules de gouttelettes pendant le séjour de celui-ci dans l~espace du récipient, pour solidifier les particules d~azote liquide par vaporisation de la chaleur latente et former de fines particules d~azote solide ayant un diamètre particulaire uniforme, et en mélangeant les particules d~azote solide avec de l~azote liquide.

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