Abstract:
The invention provides a method for contacting liquid with an ion exchange resin comprising introducing liquid into a process tank containing ion exchange resin at an inlet (2) and removing liquid that has been contacted with resin from the process tank at an outlet, the outlet being located above the inlet (2), the process tank including a resin containment region (7, 9) disposed between the inlet (2) and the outlet to impede the upward flow of the resin as it becomes entrained in the liquid flowing from the inlet to the outlet, and a contactor region for promoting contact between the resin and the liquid located below the containment region (7, 9), said containment region (7, 9) containing an array of settling members through which the liquid and resin upflow and which impede the flow of the resin to a sufficient extent that it is substantially contained within or below the containment region (7, 9). Apparatus for performing this method is also provided.
Abstract:
The invention provides a system and process for separating residual magnetic resin from a liquid stream by passing the stream through or over permanent magnets (30) located within the stream wherein the process also includes a means for releasing any resin retained by the permanent magnets (30) and capturing the released resin.
Abstract:
A method for inhibiting formation of nitrosamines and an anion exchange resin produced therefrom comprising providing an anion exchange resin with a nitrosating agent and applying an antioxidant to the resin to inhibit formation of nitrosamines on the anion exchange resin.
Abstract:
The invention provides a method for contacting liquid with an ion exchange resin comprising introducing liquid into a process tank containing ion exchange resin at an inlet (2) and removing liquid that has been contacted with resin from the process tank at an outlet, the outlet being located above the inlet (2), the process tank including a resin containment region (7, 9) disposed between the inlet (2) and the outlet to impede the upward flow of the resin as it becomes entrained in the liquid flowing from the inlet to the outlet, and a contactor region for promoting contact between the resin and the liquid located below the containment region (7, 9), said containment region (7, 9) containing an array of settling members through which the liquid and resin upflow and which impede the flow of the resin to a sufficient extent that it is substantially contained within or below the containment region (7, 9). Apparatus for performing this method is also provided.
Abstract:
The invention provides a process for separating a solution from magnetic resin portions, particles and / or fines by passing a solution containing the resin portions, particles and / or fines through a bed of particulate magnetic material.
Abstract:
The invention provides a system and process for separating residual magnetic resin from a liquid stream by passing the stream through or over permanent magnets (30) located within the stream wherein the process also includes a means for releasing any resin retained by the permanent magnets (30) and capturing the released resin.
Abstract:
PROBLEM TO BE SOLVED: To combine the functions of a resin contactor and settler in an upright process tank in a liquid upflow arrangement, and to provide a method for retaining a substantial proportion of a resin within a tank.SOLUTION: The method includes introducing liquid into the process tank 1 containing ion exchange resin at an inlet 2 and removing the liquid that has been contacted with resin from the process tank at an outlet, the outlet being located above the inlet, the process tank including a resin containment region disposed between the inlet and the outlet to impede the upward flow of the resin as it becomes entrained in the liquid flowing from the inlet to the outlet, and a contactor region for promoting contact between the resin and the liquid located below the containment region, the containment region containing an array 7, 9 of settling members through which the liquid and resin upflow and which impede the flow of the resin to a sufficient extent that it is substantially contained within or below the containment region.