CN1308248C - Composite ClO2 generating process - Google Patents
Composite ClO2 generating process Download PDFInfo
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- CN1308248C CN1308248C CNB021552592A CN02155259A CN1308248C CN 1308248 C CN1308248 C CN 1308248C CN B021552592 A CNB021552592 A CN B021552592A CN 02155259 A CN02155259 A CN 02155259A CN 1308248 C CN1308248 C CN 1308248C
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- chlorine dioxide
- mixed
- hydrochloric acid
- sodium chlorate
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Abstract
The present invention relates to a composite chlorine dioxide generation method for sewage treatment. In the method of the present invention, sodium chlorate is used as an oxidizing agent, and hydrochloric acid and sucrose are used as reducing agents. The sodium chlorate, the sucrose and water are prepared into a mixed water solution according to the ratio of the sodium chlorate to the sucrose to the water of 1: 0.05 to 0.1: 2, and then, the mixed water solution is prepared into mixed liquid with the hydrochloric acid according to the volume ratio of 1: 1. The mixed liquid is continuously added to a chlorine dioxide generator at 71 DEG C, and mixed gas of chlorine dioxide and chlorine can be generated under the conditions of negative pressure and aeration. When the method of the present invention is compared with the prior art, in the method of the present invention for producing compound chlorine dioxide with a negative pressure aeration technology production device under the same conditions, the low production is cost, the raw material utilization rate is high, and the chlorine dioxide yield is high.
Description
Technical Field
The invention belongs to a chlorine dioxide generating method for sewage treatment, and particularly relates to a composite chlorine dioxide generating method.
Background
Chlorine dioxide is a broad-spectrum sterilization disinfectant and is also a disinfectant widely used at present, and the combined use of the chlorine dioxide and the disinfectant can better play a role in disinfection by using composite chlorine dioxide. The negative pressure aeration chlorine dioxide generator for sewage treatment is the main device in the chemical chlorine dioxide generator, and the raw materials adopted in the production process use sodium chloride as an oxidant and hydrochloric acid as a reducer. The disadvantages of this process are that the reaction is not smooth, the cost is high and the yield of chlorine dioxide is not satisfactory.
Disclosure of Invention
The invention provides a composite chlorine dioxide generating method with high raw material utilization rate, reduced cost and high chlorine dioxide yield for solving the technical problems in the prior art.
The technical scheme adopted by the invention for solving the technical problems in the prior art is as follows: sodium chlorate is used as an oxidizing agent, hydrochloric acid is used as a reducing agent, and the reducing agent also comprises cane sugar. Sodium chlorate, cane sugar and water are mixed into mixed aqueous solution according to the volume ratio of 1: 0.05-0.1: 2, then the mixed aqueous solution and hydrochloric acid are mixed into mixed liquid according to the volume ratio of 1: 1, the mixed liquid is continuously added into a chlorine dioxide generator, and the mixed gas of chlorine dioxide and chlorine gas can be generated under the condition of 71 ℃ and negative pressure aeration.
The term "sucrose" as used herein means cane sugar or beet sugar or C12H22O11Sodium chlorate NaClO3And hydrochloric acid, i.e., HCl. The reaction principle is
Hydrolysis of another 1mol of sucrose leads to 1mol of glucose (aldose) and 1mol of fructose (ketose) in NaClO3And HCl is presentCan generate compound ClO under the condition of2The reaction is as follows:
the concentration of the hydrochloric acid is 28-36% of that of the commercially available hydrochloric acid
The invention has the advantages and positive effects that: compared with the existing chlorine dioxide generation process, for example, the equipment of Chinese patent ZL93111202.8 is used for producing composite chlorine dioxide, 200 g of sodium chlorate, 400 g of water and 500 g of hydrochloric acid (28%) are added at 71 ℃, and the reaction formula is as follows:
78 g of chlorine dioxide can be generated under negative pressure aeration by the method, and the conversion rate is 60 percent;
under the same conditions, by adopting the method of the invention, 200 g of sodium chlorate, 10 g of cane sugar, 400 g of water and 400 g of hydrochloric acid (28%) are added, and the reaction formula is as follows:
the chlorine dioxide can be generated to be more than 105 g under the negative pressure aeration at 71 ℃, and the conversion rate is more than 80%. Therefore, compared with the prior art, the method has the advantages of high utilization rate of raw materials, low production cost and high yield of chlorine dioxide.
Drawings
FIG. 1 is a schematic process flow diagram of the present invention.
Detailed Description
For a further understanding of the contents, features and effects of the present invention, the following examples are illustrated in the accompanying drawings and described in the following detailed description:
the production equipment disclosed in Chinese patent ZL97233737.7 is adopted, sodium chlorate is used as an oxidizing agent, cane sugar and hydrochloric acid are used as reducing agents, and the reaction is carried out in a hydrochloric acid medium, and the temperature is controlled at 71 ℃ in the whole reaction process. The hydrochloric acid concentration is 28% by preparing a mixedsolution from 200 g of sodium chlorate, 20 g of cane sugar and 400 g of water and then adding diluted hydrochloric acid according to the volume ratio. Referring to fig. 1, the above-mentioned mixed materials are added into a reactor 1, and then the composite chlorine dioxide gas is generated. The water ejector 2 is operated to generate negative pressure to make the reactor 1 operate in a reduced pressure state, so that the composite chlorine dioxide gas generated in the reactor 1 is absorbed into the absorption tank 3 through the water ejector 2.
Claims (1)
1. A compound chlorine dioxide generating method takes sodium chlorate as an oxidant and hydrochloric acid as a reducing agent, and is characterized in that the reducing agent also comprises cane sugar; sodium chlorate, cane sugar and water are mixed into mixed water solution according to the volume ratio of 1: 0.05-0.1: 2, then the mixed water solution and hydrochloric acid are mixed into mixed liquid according to the volume ratio of 1: 1, the mixed liquid is continuously added into a chlorine dioxide generator at 71 ℃, and the mixed gas of chlorine dioxide and chlorine gas can be generated under the condition of negative pressure aeration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021552592A CN1308248C (en) | 2002-12-12 | 2002-12-12 | Composite ClO2 generating process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021552592A CN1308248C (en) | 2002-12-12 | 2002-12-12 | Composite ClO2 generating process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1506319A CN1506319A (en) | 2004-06-23 |
| CN1308248C true CN1308248C (en) | 2007-04-04 |
Family
ID=34235824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021552592A Expired - Fee Related CN1308248C (en) | 2002-12-12 | 2002-12-12 | Composite ClO2 generating process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1308248C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101481745B (en) * | 2008-01-09 | 2011-08-31 | 广西工学院 | Method for damaging oxidase in cane juice |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103145101B (en) * | 2013-03-20 | 2015-06-03 | 广西轻工业科学技术研究院 | Sugar manufacturing process-based high-purity chlorine dioxide preparation method |
| CN112741109A (en) * | 2021-02-22 | 2021-05-04 | 卫溯源(北京)生物医药科技有限公司 | Preparation method of chlorine dioxide sterilizing gas |
| CN113800472A (en) * | 2021-08-13 | 2021-12-17 | 湖北金汉江精制棉有限公司 | Preparation method of stable chlorine dioxide bleaching solution |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1230517A (en) * | 1998-03-27 | 1999-10-06 | 黄君礼 | Chlorine dioxide generating method and apparatus |
-
2002
- 2002-12-12 CN CNB021552592A patent/CN1308248C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1230517A (en) * | 1998-03-27 | 1999-10-06 | 黄君礼 | Chlorine dioxide generating method and apparatus |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101481745B (en) * | 2008-01-09 | 2011-08-31 | 广西工学院 | Method for damaging oxidase in cane juice |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1506319A (en) | 2004-06-23 |
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