Carbon dioxide solidification system

Abstract

To provide a carbon dioxide solidification system capable of continuous processing in short time using cold at a cryogenic temperature.SOLUTION: A carbon dioxide solidification system 1 comprises: an air liquefaction device 30 which generates liquefied nitrogen containing gas by cooling gas containing nitrogen; a carbon dioxide solidification drum 70 which solidifies carbon dioxide in a gas phase by mixing the liquefied nitrogen containing gas and carbon dioxide containing gas; a liquefied nitrogen gas containing gas supply line which supplies the liquefied nitrogen containing gas generated by the air liquefaction device 30 to the carbon dioxide solidification drum 70; a carbon dioxide containing gas supply line which supplies the carbon dioxide containing gas to the carbon dioxide solidification drum 70; a dry ice discharge line 181 which externally discharges solidified carbon dioxide generated in the carbon dioxide solidification drum 70; and a surplus cold gas discharge line 182 which externally discharges surplus cold gas that has not undergone solidification in the carbon dioxide solidification drum 70.SELECTED DRAWING: Figure 1

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