METHOD AND APPARATUS FOR QUICK SOLIDIFICATION OF AQUEOUS SUBSTANCE MATERIAL

摘要

PROBLEM TO BE SOLVED: To improve a solidification method of a aqueous substance by directly evaporating water from the substance and sorbing water vapor in a sorption agent in a vacuum system and thereby to provide an economical method for simple and quick solidification of the aqueous substance under vacuum.

SOLUTION: The aqueous substance and the sorption agent are evacuated from the surrounding pressure level to a system pressure of below 5 mbar (absolute) by means of a vacuum pump and the nonsorbable gases thereby suctioned by the vacuum pump are suctioned through the sorption agent. The mass of the used sorption agent is at least half the mass of the water fraction in the substance. The solidification process is realized in less than 2 min, particularly less than 20 sec. The aqueous substance is solidified in a solidification container that can be removed from the vacuum system, the vacuum system is subsequently vented, and the solidified substance is removed from the vacuum system together with the solidification container.

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