Patent · US Expired

Ion exchange columns

US4540488A · kind A · utility

0Cited by

1References

9Claims

0Family size

Assignee

British Nuclear Fuels PLC · GB

Inventors

Paul Connolly · Milford, US
Barry G. Weston · Gosforth, GB

Key dates

Filing date	Jan 3, 1984
Grant date	Sep 10, 1985
Priority date	—
Expiry date	Jan 3, 2004

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01J47/022
WIPO fieldChemical engineering
WIPO sectorChemistry

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.