| Patent Number |
Title Of Patent |
Date Issued |
| 5858322 |
Process of producing chlorine dioxide |
January 12, 1999 |
| The invention relates to a process of producing chlorine dioxide comprising the steps: Providing a reactor with an aqueous acidic reaction medium containing alkali metal chlorate and sulfate; reducing chlorate ions in said reaction medium to form chlorine dioxide; maintaining the reactio |
| 5770171 |
Process for production of chlorine dioxide |
June 23, 1998 |
| A process for production of chlorine dioxide which is substantially free of by product chlorine. Chlorine-dioxide is produced from an alkali metal chlorate, a mineral acid and a reducing agent such as methanol in a reaction medium maintained at an acid normality of less than 9 and with a |
| 5641530 |
Method of disinfection |
June 24, 1997 |
| A method of disinfection of foodstuff involving the use of hydrogen peroxide in combination with anti-microbial agents selected from the group consisting of benzoic acid, and phosphoric acid, at low concentration, to substantially reduce the microbial count in food-related application. |
| 5624545 |
Production of polysulphide by electrolysis of white liquor containing sulphide |
April 29, 1997 |
| Sulphide-containing white liquor is treated in a continuously operating electrolytic cell having separate anode and cathode compartments separated by a partially permeable barrier. White liquor is introduced into the anode compartment of the cell, and an aqueous solution of alkali metal |
| 5523072 |
Process of producing chlorine dioxide |
June 4, 1996 |
| Disclosed is a process of producing chlorine dioxide having the steps of providing a reactor with an aqueous acidic reaction medium containing alkali metal chlorate and phosphate; reducing chlorate ions in the reaction medium to form chlorine dioxide; withdrawing chlorine dioxide gas |
| 5487881 |
Process of producing chlorine dioxide |
January 30, 1996 |
| The invention relates to a process of producing chlorine dioxide using, in a first alternative atmospheric pressure and hydrogen peroxide in the reaction medium optionally with an electrolytic cell. In a second alternative, either atmospheric or subatmospheric pressure is used in the |
| 5486344 |
Method of producing chlorine dioxide |
January 23, 1996 |
| The invention relates to a method of producing chlorine dioxide, which method comprises reacting chloric acid with hydrogen peroxide as a reducing agent in such proportions that chlorine dioxide is produced. |
| 5478446 |
Electrochemical process |
December 26, 1995 |
| The invention relates to a method of producing an acidified aqueous solution containing alkali metal sulfate and chlorate comprising the steps of introducing an aqueous solution containing alkali metal sulfate and chlorate into an electrochemical cell and electrochemically increasing the |
| 5470480 |
Process for treating waste water effluent |
November 28, 1995 |
| Waste water effluent streams are treated with hydrogen peroxide and ultraviolet radiation. Hydroxyl ions formed by action of UV on H.sub.2 O.sub.2 reduces BOD, COD, AOX and color in effluent. In the case of pulp mill effluent, some or all of the effluent can then be recycled to the p |
| 5380517 |
Process for continuously producing chlorine dioxide |
January 10, 1995 |
| A process for continuously producing chlorine dioxide by reacting an alkali metal chlorate, sulfuric acid or another chlorine free mineral acid and hydrogen peroxide as reducing agent to produce chlorine dioxide in an aqueous reaction medium. In the process chlorine dioxide is generated |
| 5273733 |
Process for the production of chlorine dioxide |
December 28, 1993 |
| A process for the production of chlorine dioxide by reacting at least one of chloric acid and an alkali metal chlorate, and hydrogen peroxide as the reducing agent in such proportions that chlorine dioxide is produced in a reaction medium. A mixture comprising chlorine dioxide and oxygen |
