Process for the production of chlorine dioxide
AssigneeAkzo Nobel Chemicals International B.V.
InventorsFelix Karl Torsten Hultén, Karolina Ellen Therese Appelqvist Albinsson, Kalle Hans Thomas Pelin
Life of this patent
Estimating the term…
Abstract
The invention relates to a process for the production of chlorine dioxide comprising forming chlorine dioxide in a reaction medium in a reaction vessel and withdrawing chlorine dioxide as a gas from the reaction medium in the reaction vessel, the process further comprising adding chlorine dioxide to at least one raw material used in the process. The invention further relates to the use of chlorine dioxide for the reduction of the amount of chlorinated aromatic compounds occurring in a process for the production of chlorine dioxide.
Claims16
A process for reducing the amount of chlorinated aromatic compounds in the reaction of chlorate ions and a reducing agent in an acidic aqueous reaction medium to form chlorine dioxide, the process consisting of adding chlorine dioxide to at least one raw material used in said reaction, wherein the at least one raw material includes water, an aqueous solution of an alkali metal chlorate, a reducing agent, or at least one mineral acid.
Dependencies are inferred from the claim text.