CN115215296A - Method for preparing chlorine dioxide solution in situ - Google Patents
Method for preparing chlorine dioxide solution in situ Download PDFInfo
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- CN115215296A CN115215296A CN202210644111.0A CN202210644111A CN115215296A CN 115215296 A CN115215296 A CN 115215296A CN 202210644111 A CN202210644111 A CN 202210644111A CN 115215296 A CN115215296 A CN 115215296A
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- Prior art keywords
- agent
- chlorine dioxide
- dioxide solution
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- sodium
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B11/00—Oxides or oxyacids of halogens; Salts thereof
- C01B11/02—Oxides of chlorine
- C01B11/022—Chlorine dioxide (ClO2)
- C01B11/023—Preparation from chlorites or chlorates
- C01B11/024—Preparation from chlorites or chlorates from chlorites
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
Abstract
The invention relates to the technical field of water treatment, in particular to a method for preparing chlorine dioxide solution in situ. A method for the in situ preparation of a chlorine dioxide solution comprising the steps of: mixing and reacting an agent A and an agent B, wherein the agent A comprises alkali metal chlorite, a chloride salt catalyst, a stabilizer with a specific content and a certain amount of water; the agent B comprises inorganic protonic acid, an inducer and a certain mass of water. In the aqueous solution, the inducer in the agent B can react with the alkali metal chlorite in the agent A to generate hypochlorous acid, so that the yield of the chlorine dioxide converted from the alkali metal chlorite can be improved, and the chlorate in the agent A has a catalytic effect and can accelerate the reaction rate. The method has the advantages of high reaction yield, high reaction rate, no chlorine generation and wide application prospect in the field of water treatment.
Description
Technical Field
The invention belongs to the technical field of water treatment, and particularly relates to a method for synthesizing a chlorine dioxide solution in situ.
Background
Chlorine dioxide has a high oxidation-reduction potential, can effectively kill viruses, bacteria, protists, algae, fungi, various spores and thalli formed by the spores, does not generate carcinogens such as trichloromethane and the like, is widely applied to the fields of drinking water, municipal sewage, air treatment and the like, and continuously makes breakthrough progress in new fields.
At present, methods for preparing chlorine dioxide by using chlorite as a raw material mainly comprise an acidification method and an oxidation method. The acidification method mainly utilizes hydrogen ions in acid to react with chlorite to generate chlorous acid, and then the chlorous acid is decomposed to generate chlorine dioxide, although the method is simple, the maximum theoretical proportion of the generated chlorine dioxide is only 80 percent, and the acid needs to be excessive by tens of times to achieve a satisfactory conversion rate, so the defect seriously hinders the wide application of the method; the oxidation method is to oxidize chlorite ions into chlorine dioxide by using strong oxidants such as chlorine gas, hypochlorous acid, persulfate and the like, wherein the maximum theoretical proportion of chlorine dioxide generated by a chlorine gas and hypochlorous acid system is 100 percent. Chlorine systems are prone to increase the concentration of disinfection byproducts in water due to the presence of chlorine residues, thereby limiting the development of chlorine oxidation processes, while persulfate systems often require heating to improve reaction kinetics, which increases energy consumption without utilizing industrial development; in contrast, hypochlorous acid is a preferred choice as an oxidizing agent, but hypochlorite is unstable and difficult to store, whereas the cost of hydrolyzing hypochlorous acid by addition of dichloroisocyanurate is prohibitive, and how to continue the generation of hypochlorous acid in solution in an inexpensive, mild, and safe manner is a technical bottleneck of the process.
Disclosure of Invention
In order to solve the problems of higher cost and difficult hypochlorous acid storage in the process of preparing chlorine dioxide by a hypochlorous acid oxidation method, the invention provides a method for synthesizing chlorine dioxide in situ, which utilizes an inducer to react with chlorite to continuously generate hypochlorous acid in situ in a solution, then efficiently synthesizes a chlorine dioxide solution with protonic acid under the action of a catalyst, and can realize continuous large-scale preparation of the chlorine dioxide solution through reasonable design experiments.
In order to achieve the purpose of the invention, the embodiment of the invention adopts the following technical scheme: a method for synthesizing chlorine dioxide solution in situ is provided, which comprises mixing agent A and agent B for reaction, wherein: the agent A comprises 20 to 40 portions of alkali metal chlorite, 3 to 5 portions of stabilizer, 3 to 5 portions of catalyst and 200 to 300 portions of water according to the weight portion; the agent B comprises 40-70 parts of protonic acid, 3-5 parts of inducer and 200-300 parts of water in parts by weight.
Further, the alkali metal chlorite is at least one of sodium chlorite and potassium chlorite; the stabilizer is magnesium sulfate; the catalyst is at least one of sodium chloride, potassium chloride and manganese chloride.
Furthermore, the stabilizer can ensure the stability of the alkali metal chlorite after being dissolved in water and can also protect the safety and the stability of the subsequent activation reaction process.
Further, the protonic acid is at least one of sodium hydrogen sulfate, potassium hydrogen sulfate, sodium hydrogen carbonate and sodium hydrogen phosphate, and sodium hydrogen sulfate is more preferable. The inducer is at least one of glucose, sucrose, maltose, aldotriose, aldotetrose, aldopentose and aldohexose, more preferably glucose.
Further, the embodiment of the present invention further provides a specific operation method for preparing the chlorine dioxide solution by the in-situ method, wherein the specific operation method comprises:
weighing the components of the agent A and the agent B according to the formula amount, respectively, uniformly stirring, pouring the agent B into the agent A at one time at 15-25 ℃, and reacting for 15-35 min to finally obtain the chlorine dioxide solution.
Compared with the prior art, the method for synthesizing the chlorine dioxide solution in situ is realized by adopting two independent A, B agents for reaction preparation, wherein the alkali metal chlorite in the agent A is used as a donor of the chlorine dioxide, and the chemical property of the alkali metal chlorite is active, so that the components in the agent A can be mixed to form a stable and uniform mobile phase after being matched with a specific amount of stabilizing agent, thereby synthesizing the chlorine dioxide in a liquid phase, in the mixing process of the A, B agents, the inducer in the agent B can continuously generate hypochlorous acid with the alkali metal chlorite in the solution, the obtained product can react with the proton acid and the chloride salt catalyst in the agent A, the hypochlorous acid exists in the solution, so that the yield of the chlorine dioxide converted from the alkali metal chlorite is increased, meanwhile, the reaction power can be further improved, the conversion rate of the alkali metal chlorite is ensured from two aspects, and no secondary pollution is generated in the whole reaction raw materials and the reaction process.
Detailed Description
The invention provides a method for preparing chlorine dioxide solution in situ, which comprises the following steps:
the preparation method comprises the following steps of weighing the components of the agent A and the agent B according to the weight ratio, fully and uniformly stirring to obtain reaction liquid, and reacting the reaction liquid to obtain chlorine dioxide solution.
In the present examples, the starting materials used in the present invention are preferably commercially available products unless otherwise specified.
In this embodiment, the agent a comprises alkali metal chlorite, catalyst chlorate, magnesium sulfate stabilizer and a certain mass of water; the alkali metal chlorite is at least one of sodium chlorite and potassium chlorite, and is more preferably sodium chlorite; the catalyst is at least one of sodium chloride, potassium chloride and manganese chloride, and is preferably sodium chloride.
In this embodiment, the agent B includes protonic acid, inducer and a certain mass of water. The protonic acid is at least one of sodium hydrogen sulfate, potassium hydrogen sulfate, sodium hydrogen carbonate, sodium hydrogen phosphate and sodium dihydrogen phosphate, and more preferably sodium hydrogen sulfate. The inducer is at least one of glucose, aldotriose, aldotetrose, aldopentose and aldohexose, and more preferably glucose.
In the embodiment, the temperature of the reaction is 15-35 ℃; the reaction time is 15-35 min.
The method for preparing chlorine dioxide in situ according to the present invention is described in detail with reference to the following examples, which should not be construed as limiting the scope of the present invention.
Example 1
At 25 ℃, the agent A comprises 20g of sodium chlorite, 4g of manganese sulfate, 4g of sodium chloride and 250g of water, and is uniformly stirred for later use; the agent B comprises 60g of sodium bisulfate, 4g of glucose and 250g of water, and is stirred uniformly. And pouring the agent B into the agent A at one time, and reacting for 20min to obtain the chlorine dioxide solution.
Example 2
At 15 ℃, the agent A comprises 20g of sodium chlorite, 4g of manganese sulfate, 5g of sodium chloride and 250g of water, and is uniformly stirred for later use; the agent B comprises 50g of sodium bisulfate, 4g of glucose and 250g of water, and is stirred uniformly. And pouring the agent B into the agent A at one time, and reacting for 35min to obtain the chlorine dioxide solution.
Example 3
At 35 ℃, the agent A comprises 20g of sodium chlorite, 4g of manganese sulfate, 2g of sodium chloride and 250g of water, and is uniformly stirred for later use; the agent B comprises 30g of sodium bisulfate, 4g of glucose and 250g of water, and is stirred uniformly. And pouring the agent B into the agent A at one time, and reacting for 30min to obtain the chlorine dioxide solution.
Example 4
At 25 ℃, the agent A comprises 30g of potassium chlorite, 4g of manganese sulfate, 4g of sodium chloride and 250g of water, and is uniformly stirred for later use; the agent B comprises 50g of sodium bisulfate, 4g of glucose and 250g of water, and is stirred uniformly. And pouring the agent B into the agent A at one time, and reacting for 25min to obtain the chlorine dioxide solution.
Example 5
At 25 ℃, the agent A comprises 30g of potassium chlorite, 4g of manganese sulfate, 4g of sodium chloride and 250g of water, and is uniformly stirred for later use; the agent B comprises 50g of sodium bisulfate, 4g of glucose and 250g of water, and is stirred uniformly. And pouring the agent B into the agent A at one time, and reacting for 15min to obtain the chlorine dioxide solution.
Detection example:
the concentration of chlorine dioxide in the solution and the concentration of chlorite in the solution prepared in the examples were measured, and the final results are shown in table 1.
The above description is intended to be illustrative of the present invention and should not be taken as limiting the invention, as the invention is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.
Claims (5)
1. A method for preparing chlorine dioxide solution in situ, which is characterized in that: the preparation method comprises the following steps of mixing and reacting an agent A and an agent B, wherein the agent A comprises 20-40 parts of alkali metal chlorite, 3-5 parts of a stabilizer, 3-5 parts of a catalyst and 200-300 parts of water in parts by weight; the agent B comprises 40-70 parts of protonic acid, 3-5 parts of inducer and 200-300 parts of water by weight.
2. The method for in situ preparation of chlorine dioxide solution as claimed in claim 2, wherein said agent a and agent B are mixed and reacted at 15-35 ℃ for 15-35 min.
3. The method for the in situ preparation of a chlorine dioxide solution as claimed in claim 2, wherein the alkali metal chlorite is at least one of sodium chlorite and potassium chlorite; the stabilizer is magnesium sulfate; the catalyst is at least one of sodium chloride, potassium chloride and manganese chloride.
4. The method for the in situ preparation of a chlorine dioxide solution as claimed in claim 2, wherein the inorganic protic acid is at least one of sodium bisulfate, potassium bisulfate, sodium bicarbonate, sodium hydrogen phosphate and sodium dihydrogen phosphate; the inducer is at least one of glucose, aldotriose, aldotetrose, aldopentose and aldohexose.
5. Method for the in situ preparation of a chlorine dioxide solution according to any one of claims 2 to 5, characterized in that it comprises in particular the following operations: weighing the components in the agent A and the agent B according to the formula ratio respectively, uniformly stirring, and mixing and reacting the agent A and the agent B at the temperature of 15-35 ℃ for 15-35 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202210644111.0A CN115215296A (en) | 2022-06-09 | 2022-06-09 | Method for preparing chlorine dioxide solution in situ |
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| CN202210644111.0A CN115215296A (en) | 2022-06-09 | 2022-06-09 | Method for preparing chlorine dioxide solution in situ |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103145101A (en) * | 2013-03-20 | 2013-06-12 | 广西轻工业科学技术研究院 | Sugar manufacturing process-based high-purity chlorine dioxide preparation method |
| CN108751385A (en) * | 2018-04-24 | 2018-11-06 | 苏州国科芯感医疗科技有限公司 | Solid chlorine dioxide slow-release material and preparation method thereof |
| CN109819999A (en) * | 2019-04-04 | 2019-05-31 | 开封恩科生物科技有限公司 | Chlorine dioxide solid releasing agent and preparation method thereof |
| CN110150315A (en) * | 2019-05-17 | 2019-08-23 | 四川蓝洁绿源环保科技有限公司 | A kind of solid high-pure chlorinedioxide releasing agent |
| CN110292050A (en) * | 2019-04-30 | 2019-10-01 | 广州超威生物科技有限公司 | It is a kind of to adjust the method and chlorine dioxide slow-release gel that chlorine dioxide steadily discharges |
| CN110577192A (en) * | 2019-10-25 | 2019-12-17 | 东北大学秦皇岛分校 | preparation device and method of high-purity chlorine dioxide solution |
| CN111034721A (en) * | 2019-11-20 | 2020-04-21 | 江垣科技有限公司 | Quick-acting granule for generating chlorine dioxide by selective oxidation dissolved immediately in water |
| KR102306864B1 (en) * | 2020-12-09 | 2021-09-28 | 진남섭 | Kits for disinfection using chlorine dioxide fumigation |
| CN113812403A (en) * | 2021-10-29 | 2021-12-21 | 石家庄北赫环保科技有限公司 | Chlorine dioxide solution and preparation method thereof |
-
2022
- 2022-06-09 CN CN202210644111.0A patent/CN115215296A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103145101A (en) * | 2013-03-20 | 2013-06-12 | 广西轻工业科学技术研究院 | Sugar manufacturing process-based high-purity chlorine dioxide preparation method |
| CN108751385A (en) * | 2018-04-24 | 2018-11-06 | 苏州国科芯感医疗科技有限公司 | Solid chlorine dioxide slow-release material and preparation method thereof |
| CN109819999A (en) * | 2019-04-04 | 2019-05-31 | 开封恩科生物科技有限公司 | Chlorine dioxide solid releasing agent and preparation method thereof |
| CN110292050A (en) * | 2019-04-30 | 2019-10-01 | 广州超威生物科技有限公司 | It is a kind of to adjust the method and chlorine dioxide slow-release gel that chlorine dioxide steadily discharges |
| CN110150315A (en) * | 2019-05-17 | 2019-08-23 | 四川蓝洁绿源环保科技有限公司 | A kind of solid high-pure chlorinedioxide releasing agent |
| CN110577192A (en) * | 2019-10-25 | 2019-12-17 | 东北大学秦皇岛分校 | preparation device and method of high-purity chlorine dioxide solution |
| CN111034721A (en) * | 2019-11-20 | 2020-04-21 | 江垣科技有限公司 | Quick-acting granule for generating chlorine dioxide by selective oxidation dissolved immediately in water |
| KR102306864B1 (en) * | 2020-12-09 | 2021-09-28 | 진남섭 | Kits for disinfection using chlorine dioxide fumigation |
| CN113812403A (en) * | 2021-10-29 | 2021-12-21 | 石家庄北赫环保科技有限公司 | Chlorine dioxide solution and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 朱世奇: "二氧化氯固体制剂的制备及其稳定性的研究", 《中国硕士学位论文全文数据库工程科技I辑》 * |
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