IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
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출원번호 |
US-0109508
(2011-05-17)
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등록번호 |
US-8663481
(2014-03-04)
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우선권정보 |
DE-10 2007 061 360 (2007-12-19); DE-10 2008 041 081 (2008-08-07); DE-10 2008 042 424 (2008-09-29) |
발명자
/ 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
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인용정보 |
피인용 횟수 :
0 인용 특허 :
57 |
초록
▼
A method of treating water with chlorine dioxide (ClO2), by: surrounding a reaction chamber, in which the ClO2 is generated, with water, wherein the water surrounding the reaction chamber is simultaneously the water to be treated; and passing a reaction solution comprising the ClO2 formed in the rea
A method of treating water with chlorine dioxide (ClO2), by: surrounding a reaction chamber, in which the ClO2 is generated, with water, wherein the water surrounding the reaction chamber is simultaneously the water to be treated; and passing a reaction solution comprising the ClO2 formed in the reaction chamber out of the reaction chamber through an outlet directly into the water, thus treating the water.
대표청구항
▼
1. A method of treating an aqueous stream with chlorine dioxide (ClO2), comprising: generating a chlorine dioxide in a reaction chamber surrounded by the aqueous stream to be treated, andpassing the chlorine dioxide from the reaction chamber to the surrounding aqueous stream to be treated,whereinthe
1. A method of treating an aqueous stream with chlorine dioxide (ClO2), comprising: generating a chlorine dioxide in a reaction chamber surrounded by the aqueous stream to be treated, andpassing the chlorine dioxide from the reaction chamber to the surrounding aqueous stream to be treated,whereinthe reactor reaction chamber has a free outlet in contact with the surrounding aqueous stream, and the minimum pressure in the reaction chamber is the pressure generated by the surrounding aqueous stream,the surrounding aqueous stream to be treated exerts a pressure on the chlorine dioxide in the reaction chamber of a magnitude that the formation of a chlorine dioxide gas phase in the reaction chamber is prevented, andthe reaction chamber is operated without additional applied pressure control to prevent chlorine dioxide gas phase formation in the reaction chamber. 2. The method according to claim 1, wherein the reaction chamber is a reactor. 3. The method according to claim 2, wherein the reactor is a tubular reactor. 4. The method according to claim 1, wherein reactants used to generate the chlorine dioxide, and optionally dilution water, are mixed in the reaction chamber. 5. The method according to claim 1, wherein the reaction time for the generation of the chlorine dioxide in the reaction chamber is from 4 to 60 minutes. 6. The method according to claim 5, wherein the reaction time is from 4 to 6 minutes. 7. The method according to claim 1, wherein the reaction time is from 0.1 to 1.5 minutes. 8. The method according to claim 7, wherein the reaction time is from 0.3 minutes to 0.6 minutes. 9. The method according to claim 1, wherein the chlorine dioxide is generated from an alkali metal chlorite salt and hydrochloric acid as reactants. 10. The method according to claim 1, wherein the chlorine dioxide is generated from sodium chlorite and hydrochloric acid as reactants. 11. The method according to claim 10, wherein the concentration of the hydrochloric acid is 33-42% and that of the sodium chlorite solution is 25-40%. 12. The method according to claim 1, wherein the chlorine dioxide is generated from sodium chlorite in an aqueous solution of from 3.5% to 40%. 13. The method according to claim 1, wherein the chlorine dioxide is generated from hydrochloric acid in a concentration of from 3.5% to 42%. 14. The method according to claim 1, wherein the chlorine dioxide is generated from sodium chlorite and chlorine as reactants. 15. The method according to claim 1, wherein dilution water is used in the generation of the chlorine dioxide. 16. The method according to claim 1, wherein a conductivity value of the reaction solution is measured in the reaction solution leaving the reaction chamber. 17. The method according to claim 1, wherein no dilution water is used in the generation of the chlorine dioxide. 18. The method according to claim 1, wherein concentrations of reactants used in generating chlorine dioxide are selected in such a manner that a concentration of chlorine dioxide at the end of the reaction chamber outlet is greater than 3 g/l of solution. 19. The method according to claim 18, wherein concentrations of reactants used in generating chlorine dioxide are selected in such a manner that a concentration of chlorine dioxide at the end of the reaction chamber outlet is greater than 26 g/l of solution. 20. The method according to claim 19, wherein concentrations of reactants used in generating chlorine dioxide are selected in such a manner that a concentration of chlorine dioxide at the end of the reaction chamber outlet is greater than 80 g/l of solution. 21. A method according to claim 1, wherein the water of the surrounding aqueous stream which is to be treated is recirculation cooling water. 22. The method according to claim 1, wherein the reaction chamber has a free outlet in direct contact with the surrounding aqueous stream. 23. The method according to claim 1, wherein the reaction is carried out continuously and chlorine dioxide is removed continuously from the reaction chamber. 24. A method of treating an aqueous stream with chlorine dioxide (ClO2), comprising: generating an aqueous chlorine dioxide containing reaction solution in a reaction chamber surrounded by the aqueous stream to be treated, andpassing the chlorine dioxide containing reaction solution from the reaction chamber to the surrounding aqueous stream to be treated,whereinthe reaction chamber has a free outlet in contact with the surrounding aqueous stream,the surrounding aqueous stream to be treated exerts a pressure on the chlorine dioxide in the aqueous chlorine dioxide reaction solution in the reaction chamber of a magnitude that the solubility limit of chlorine dioxide in water at a given temperature in the reaction chamber is not exceeded, andthe reaction chamber is operated without additional applied pressure control to prevent chlorine dioxide gas phase formation in the reaction chamber. 25. The method according to claim 24, wherein the reaction chamber has a free outlet in direct contact with the surrounding aqueous stream. 26. The method according to claim 24, wherein the reaction is carried out continuously and chlorine dioxide is removed continuously from the reaction chamber.
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