Method and apparatus for countercurrent washing of particulate s

Details Method and apparatus for countercurrent washing of particulate s Method and apparatus for countercurrent washing of particulate s

1976-12-30

1977-12-13

Fisher, Richard V.

Cleaning and liquid contact with solids

Processes

Including regeneration, purification, recovery or separation...

134 25R, 134 60, 134103, B08B 304

Patent

active

040626970

ABSTRACT:
A method and apparatus is described for the countercurrent washing of particulate solids, especially nuclear fuel particles, in a washing tower including a sequential series of washing sections each having a recirculation loop for drawing fluid from an upper portion of the washing section and introducing it adjacent a restricted opening in the bottom of the same washing section in order to control the downward flow of solids from the section, an outlet section of the washing tower being arranged beneath the lowermost washing section and including a restricted passage for regulating flow of washing fluid in the washing tower, additional fluid being introduced into the outlet section of the tower in order to minimize the flow of washing solution through the restricted passage of the outlet section.

REFERENCES:
patent: 2632720 (1953-03-01), Perry
patent: 2765913 (1956-10-01), Weiss et al.
patent: 3119721 (1964-01-01), Suares

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