Patent · US Active

Method of treating water with chlorine dioxide

US9743670B2 · kind B2 · utility

20Cited by

1References

3Claims

0Family size

Assignee

Infracor GmbH · DE

Inventors

Gerda Grund · Coesfeld, DE
Hartmut Rahtz · Schneverdingen, DE
Hermann-Josef Korte · Haltern, DE

Key dates

Filing date	Oct 11, 2012
Grant date	Aug 29, 2017
Priority date	—
Expiry date	Nov 22, 2032

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC02F1/76
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

The present invention relates to a method of preparing chlorine dioxide (ClO2) from hydrochloric acid (HCl) and sodium chlorite (NaClO2) in the presence of water (H2O). The invention has for its object to further develop the method such that it is more economical to install and operate. The object is achieved when the hydrochloric acid is used in aqueous solution at a concentration of 27 to 33 wt %, the sodium chlorite is used in aqueous solution at a concentration of 22 to 27 wt % and the molar ratio of hydrochloric acid used to sodium chlorite used is between 2.14 and 4.2.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.