PROCESS FOR PRODUCING CHLORINE DIOXIDE

摘要

The invention relates to a process for continuously producing chlorine dioxide comprising the steps of: diluting sulfuric acid of an initial concentration exceeding about 90 wt % with water; bringing the diluted sulfuric acid to a temperature below about 100 °C; feeding to a reactor the diluted sulfuric acid having a temperature below about 100 °C through a first feeding nozzle; feeding to said reactor (5) an aqueous solution comprising alkali metal chlorate and hydrogen peroxide through a second feeding nozzle, wherein said first and second feeding nozzles (1, 2) are opposite to and directed against each other; reacting the alkali metal chlorate with the mineral acid and the hydrogen peroxide to form a product stream containing chlorine dioxide; and, withdrawing the product stream from the reactor. The invention further relates to an apparatus for producing chlorine dioxide.