Ion exchange columns
AssigneeBritish Nuclear Fuels plc
InventorsPaul A. Connolly, Barry G. Weston
Life of this patent
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Abstract
The lower end of an ion exchange column is provided with a rotatable valve member which, in a first position, supports resin material in the column and, in a second position, allows the resin material to drop out of the column. The valve member can include a sintered body which in the first position supports the resin material and permits drainage of reagents introduced into the column. On rotating the valve member into its second position the sintered body can fall out of the valve member to permit the resin material to fall out of the column through the valve member. A replacement sintered body can be dropped down the column on to the valve member and the column can be refilled with resin material for further use.
Claims9
An ion exchange column including an upright chamber to receive ion exchange resin, inlet means at the upper end of the chamber to allow the introduction of resin into the chamber and to provide an inlet for a liquid to be treated, outlet means at the lower end of the chamber, the outlet means comprising a valve member having a rotatable body, at least one bore through the body, the body being rotatable between a first position to support ion exchange resin in the chamber and at the same time to permit drainage of treated liquid from the chamber through the bore and a second position to permit discharge of ion exchange resin from the chamber.
Dependencies are inferred from the claim text.