Method for regenerating a weak base anion exchanger
AssigneeHoogovens Ijmuiden, B.V.
InventorSheldon Evans
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Abstract
A method for regenerating a weak base anion exchanger which comprises passing a regenerating chemical in an upward direction through a granular resinous mass of an exchanger, thereupon displacing the chemical and rinsing the mass with water. The regenerating chemical is a lime slurry having a concentration of 1 to 5% by weight, which is both supplied to and withdrawn from the granular mass in an evenly distributed flow with a flow rate of at least 10 m.sup.3, per hour, per m.sup.3 resin material (m.sup.3 /h/m.sup.3), while the granular mass is in a compacted state.
Claims8
A method for regenerating a weak base anion exchanger which comprises passing a regenerating chemical in an upward direction through a granular resinous mass of such exchanger, thereupon displacing said chemical and rinsing the mass with water, said regenerating chemical being a lime slurry having a concentration of 1 to 5% by weight, which is both supplied to and withdrawn from the granular mass in an evenly distributed flow with a flow rate of at least 10 m.sup.3, per hour, per m.sup.3 resin material (m.sup.3 /h/m.sup.3), while said granular mass is in a compacted state.
Dependencies are inferred from the claim text.