CHLORINE DIOXIDE PRODUCTION TECHNOLOGY Russian patent published in 2022 - IPC C01B11/02 

FIELD: chemical industry.

SUBSTANCE: invention can be used in the chemical industry. The method for obtaining a solution based on chlorine dioxide includes the introduction into the reactor of a mixture of three salts with a molar ratio of the first salt to the second salt from 1 to 5 and with a molar ratio of the third salt to the first salt from 0.0001 to 0.01, 5-30% aqueous solution of hydrogen peroxide and 30-94% sulfuric acid solution. As the first salt, at least one salt selected from the group is used: sodium chlorate, potassium chlorate, calcium chlorate, as the second salt, at least one salt selected from the group: sodium chloride, potassium chloride, calcium chloride, and as the third salt, at least one salt selected from the group: manganese sulfate, manganese chloride, manganese nitrate. In this case, a moving product flow is formed. Then water is fed into the reactor, obtaining a diluted stream of the final product containing a solution of chlorine dioxide, manganese sulfate and at least one salt selected from the group: sodium sulfate, potassium sulfate, calcium sulfate, sodium hydrosulfate, potassium hydrosulfate, calcium hydrosulfate. The specified product flow is removed from the reactor.

EFFECT: invention makes it possible to increase the environmental friendliness and speed of the technological process, the purity of chlorine dioxide, reduce the content of free chlorine and the formation of organochlorine compounds with further application of the resulting solution.

1 cl, 1 tbl, 20 ex