Purification of hydrogen peroxide

Details Purification of hydrogen peroxide Purification of hydrogen peroxide

C - Chemistry, Metallurgy

01

B

C01B 15/013 (2006.01) B01J 8/20 (2006.01) B01J 47/10 (2006.01)

Patent

CA 2093791

2093791 9206918 PCTABS00012 Purification of aqueous hydrogen peroxide solutions using conventional ion-exchange techniques can result in the hydrogen peroxide decomposing explosively. Much safer processes are obtained by restricting the contact between the resin bed and the hydrogen peroxide solution to a very short contact time, by employing a treatment chamber that is vented to the atmosphere and also by slurrying the resin bed. The bed is conveniently retained on a mesh that acts as a filter (13) preferably conical having an aperture (17) at its apex through which is introduced a small fraction of the solution countercurrent (10) to the main solution flow (9) in order to slurry the bed (19). The solution can be recycled through the same bed or a plurality of beds. Very high purification can be achieved and combined with improved safety of operation.

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