Patent ID: 7213411
Filing Date: 2007-05-08
Classification: F25B,F25C,Y02A

Abstract:
1. A method for the solidification of an aqueous substance by the direct evaporation of water from the substance and the sorption of the water vapor in a sorption agent within a vacuum system, the method comprising the steps of: evacuating the aqueous substance and the sorption agent from the surrounding pressure level to a system pressure of below 5 mbar (absolute) by means of a vacuum pump; suctioning nonsorbable gases through the sorption agent with the vacuum pump, wherein the mass of the used sorption agent is at least half the mass of the water fraction in the substance; attaining the solidification process in less than 2 min, wherein the aqueous substance solidifies in a solidification container which can be removed from the system; subsequently venting the vacuum system; and removing the solidified substance from the vacuum system together with the solidification container.