Device for producing carbon dioxide snow by expansion of liquid carbon dioxide at pressure lower than a pressure corresponding to triple point of carbon dioxide, comprises nozzle for ejection of carbon dioxide in end of discharge horn
ICHARD THIERRY,THIERRY ICHARD,TOMAS MICHEL,MICHEL TOMAS
申请号：
FR1055311
公开号：
FR2962197A1
申请日:
2010.07.01
申请国别(地区):
FR
年份:
2012
代理人:
摘要：
The device comprises a nozzle (4) for ejection of carbon dioxide in a first end (5) of a discharge horn. The discharge horn: comprises a curved portion (7) for obtaining a separation of solid carbon dioxide and carbon dioxide gas by centrifugal； a pipe (11) that is configured for collecting the solid carbon dioxide and extends along a distal end of the curved portion； a lateral duct for collecting the carbon dioxide gas； a straight portion (6) placed between the first end and the curved portion； and a cylindrical dispenser. The device comprises a nozzle (4) for ejection of carbon dioxide in a first end (5) of a discharge horn. The discharge horn: comprises a curved portion (7) for obtaining a separation of solid carbon dioxide and carbon dioxide gas by centrifugal； a pipe (11) that is configured for collecting the solid carbon dioxide and extends along a distal end of the curved portion； a lateral duct for collecting the carbon dioxide gas； a straight portion (6) placed between the first end and the curved portion； a cylindrical dispenser having an inner diameter, which is 5-15 times greater than inner diameter of the pipe； and an opening for distributing the carbon dioxide snow. The distal end is opposite to the first end of the discharge horn. The curved portion has an angle of curvature of 270[deg] , and a radius of curvature of 5-20 cm. The straight portion has a length, which is three times equal to inner diameter of the discharge horn. The lateral duct extends from a wall of the discharge horn disposed at an interior side of the curved portion to the distal end of the curved portion. An inner diameter of the discharge horn is 10 times greater than a diameter of an ejection opening of the nozzle.L'invention concerne un dispositif de production de neige carbonique par détente de dioxyde de carbone liquide à une pression inférieure à la pression correspondant au point triple du dioxyde de carbone, comportant une buse (4) d'expulsion de dioxyde de carbone liquide
