Patent ID: 7682592

Claim:
A process for the production of an aqueous solution comprising chlorine dioxide, said process comprising the steps of continuously: (a) feeding to a reactor an acid, hydrogen peroxide and alkali metal chlorate; (b) reacting the alkali metal chlorate with the acid and the hydrogen peroxide to form a product stream containing chlorine dioxide, oxygen and alkali metal salt of the acid; (c) bringing the product stream from the reactor to an eductor and mixing it with motive water fed to the eductor and thereby forming a diluted product stream; (d) removing oxygen from the diluted product stream; (e) withdrawing part of the diluted product stream, before, during or after the step of removing oxygen; (f) after the step of removing oxygen, adding water to the non-withdrawn part of the diluted product stream to form a recycle stream; and, (g) bringing the recycle stream to the eductor and feeding it thereto as motive water.