Cleaning and liquid contact with solids – Apparatus – With plural means for supplying or applying different fluids...
Patent
1996-04-22
1997-09-16
Stinson, Frankie L.
Cleaning and liquid contact with solids
Apparatus
With plural means for supplying or applying different fluids...
134 953, 134111, 1341023, 1341044, 134157, 134159, 451 85, B08B 306
Patent
active
056669844
ABSTRACT:
A method and apparatus for decontaminating a substance contaminated with radioactivity, in particular, shot blasting grit contaminating with radioactivity. The method comprises: contaminated substance washing the substance to be decontaminated with chelate liquid; draining the chelate liquid; raising the temperature of the substance to a level not lower than the boiling point of a solvent by means of hot air; supplying the solvent to the substance and rapid by vaporizing the solvent; removing the remaining chelate fluid liquid by the force of the vaporization and draining and drying the substance. The apparatus comprises: a decontamination vessel rotatable in a main vessel which has a spray device, the decontamination vessel having a multitude of pores in its outer periphery; a solvent supply device communicating with the spray device and a solvent filtering device communicating with the main vessel, provided in a way to allow circulation of liquid; a purifying device for obtaining a rinse solvent; a chelate liquid supply device in communication with the spray device; a chelate liquid filtering device connected with the main vessel and communicating with the chelate supply device; an electrolytic processing device for regenerating the chelate liquid and communicating with the chelate liquid supply device; and a hot air supply device communicating with the main vessel.
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Horikawa Kenji
Ichikawa Seigo
Nakajima Yoshihiko
Obinata Hiroshi
Omata Kazuo
Morikawa Industries Corporation
Stinson Frankie L.
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