CA2307818A1 - Method of chlorine dioxide production - Google Patents
Method of chlorine dioxide production Download PDFInfo
- Publication number
- CA2307818A1 CA2307818A1 CA 2307818 CA2307818A CA2307818A1 CA 2307818 A1 CA2307818 A1 CA 2307818A1 CA 2307818 CA2307818 CA 2307818 CA 2307818 A CA2307818 A CA 2307818A CA 2307818 A1 CA2307818 A1 CA 2307818A1
- Authority
- CA
- Canada
- Prior art keywords
- hydrogen peroxide
- aqueous solution
- chlorate
- solution
- chlorine dioxide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Abstract
An aqueous solution of hydrogen peroxide and a chlorate, particularly sodium chlorate, useful in the generation of chlorine dioxide, is provided which is more concentrated in at least chlorate than is achievable by mixing together separate aqueous solutions of commercially-available hydrogen peroxide and chlorate at the same weight ratio of hydrogen peroxide to chlorate. Such solutions enable chlorine dioxide to be generated with greater efficiency.
Claims (14)
1. An aqueous solution of hydrogen peroxide and chlorate for use as a feed to a chlorine dioxide generating process which is more concentrated in at least chlorate than a solution prepared by mixing saturated chlorate solution and commercially-available hydrogen peroxide solutions.
2. The aqueous solution of claim 1 wherein the chlorate is sodium chlorate.
3. The aqueous solution of claim 2 wherein the solution is formed by dissolving crystalline sodium chlorate in aqueous hydrogen peroxide solution.
4. The aqueous solution of claim 3 wherein the concentration of the hydrogen peroxide solution is about 10 to about 50 wt%.
5. The aqueous solution of claim 4 wherein the concentration of the hydrogen peroxide solution is about 10 to about 30 wt%.
6. The aqueous solution of claim 5 wherein sufficient sodium chlorate is dissolved in the hydrogen peroxide solution to substantially saturate the same.
7. The aqueous solution of claim 3 which contains hydrogen peroxide and sodium chlorate in a weight ratio which corresponds to that required to effect efficient generation of chlorine dioxide therefrom.
8. The aqueous solution of claim 7 wherein the weight ratio is about 0.16 to about 0.30 g H2O2/g NaC1O3.
9. The aqueous solution of claim 8 which has a sodium chlorate concentration at a specific weight ratio of hydrogen peroxide to sodium chlorate is greater than that shown in continuous outline in Figure 1.
10. The aqueous solution of claim 1 containing approximately 620 g/L
NaC1O3 and 155 g/L H2O2.
NaC1O3 and 155 g/L H2O2.
11. The aqueous solution of claim 1 containing approximately 635 g/L
NaC1O3 and 110 g/L H2O2.
NaC1O3 and 110 g/L H2O2.
12. A method of forming chlorine dioxide, which comprises reacting chlorate ion with hydrogen peroxide in an aqueous acid reaction medium according to the equation:
2C1O3- + H2O2 + 2H+ -> 2C1O2 + O2 + 2H2O
wherein a feed solution to such reaction is as claimed in claim 1.
2C1O3- + H2O2 + 2H+ -> 2C1O2 + O2 + 2H2O
wherein a feed solution to such reaction is as claimed in claim 1.
13. The method of claim 12 which is carried out in a tubular chlorine dioxide generator.
14. The method of claim 12 which is carried out in conical or dual-conical chlorine dioxide generator.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13858099P | 1999-06-11 | 1999-06-11 | |
| US60/138,580 | 1999-06-11 | ||
| US13974199P | 1999-06-18 | 1999-06-18 | |
| US60/139,741 | 1999-06-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2307818A1 true CA2307818A1 (en) | 2000-12-11 |
| CA2307818C CA2307818C (en) | 2012-03-13 |
Family
ID=26836330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2307818 Expired - Lifetime CA2307818C (en) | 1999-06-11 | 2000-05-08 | Method of chlorine dioxide production |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2307818C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6387344B1 (en) | 1999-06-11 | 2002-05-14 | Akzo Nobel N.V. | Chemical composition and method |
-
2000
- 2000-05-08 CA CA 2307818 patent/CA2307818C/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6387344B1 (en) | 1999-06-11 | 2002-05-14 | Akzo Nobel N.V. | Chemical composition and method |
| US7070710B1 (en) | 1999-06-11 | 2006-07-04 | Eka Chemicals Inc. | Chemical composition and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2307818C (en) | 2012-03-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request |