method for preparation of solid carbon dioxide, device for carrying out the method and application of the process obtained by solid carbon dioxide.

摘要

A process for the preparation of solid carbon dioxide by freezing liquid carbon dioxide in a closable refrigerated vessel wherein the vessel is closed when it contains such an amount of liquid carbon dioxide in excess of the amount corresponding with the contents of the refrigerated part, that the freezing of the liquid carbon dioxide takes place without the presence of the gaseous phase, the refrigerated wall is kept at a temperature lower than the triple temperature but higher than the sublimation temperature of carbon dioxide at atmospheric pressure and after the carbon dioxide has completely solidified the solid carbon dioxide is removed.