CN111017880B - Method and device for preparing liquid chlorine dioxide disinfectant - Google Patents
Method and device for preparing liquid chlorine dioxide disinfectant Download PDFInfo
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- CN111017880B CN111017880B CN201911308676.6A CN201911308676A CN111017880B CN 111017880 B CN111017880 B CN 111017880B CN 201911308676 A CN201911308676 A CN 201911308676A CN 111017880 B CN111017880 B CN 111017880B
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- 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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- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
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Abstract
The method for preparing the liquid chlorine dioxide disinfectant comprises the following steps: respectively preparing an agent A and an agent B, adding the agent A and the agent B into a dosing device together for an activation reaction, and sending high-purity and high-activity chlorine dioxide gas generated by the reaction to a drinking water application place through the dosing device by continuous aeration; the agent A is a sodium chlorite solution, the agent B is a hydrochloric acid mixed solution and comprises a hydrochloric acid solution, an accelerator I and an accelerator II, the accelerator I is citric acid, and the accelerator II is oxalic acid. The method for preparing the liquid chlorine dioxide disinfectant utilizes the novel process formula of the agent B solution to carry out reasonable proportioning, then carries out reasonable proportioning with the original agent A solution, and can prepare high-yield high-purity chlorine dioxide gas through activation operation.
Description
Technical Field
The invention relates to the field of chemical industry, in particular to a method and a device for preparing a liquid chlorine dioxide disinfectant.
Background
Chlorine dioxide, an internationally recognized new-generation broad-spectrum powerful disinfectant, has been widely used in the society in the fields of drinking water disinfection, industrial circulating water, various wastewater treatment and the like. Because chlorine dioxide is rapid in sterilization, strong in oxidizing ability, good in effect, free of residue and free of side effects, the chlorine dioxide is more and more accepted by people under the situation that national governments and all levels of governments pay high attention to environmental protection at present, is the most ideal cleaning disinfectant at present, is more and more wide in application field, and particularly has advantages in the drinking water field and the civil field.
The technology for preparing chlorine dioxide has been in history for 30 years in China, the generator is adopted to prepare chlorine dioxide in China at first, and along with the development of national economy and the requirement of domestic market, the liquid chlorine dioxide disinfectant is developed. At that time, two main production methods for developing liquid chlorine dioxide disinfectants exist, but with the strict governance of safety and environmental protection in China, the production method of sodium chlorite preparation method is more adopted, and the method is more popular at present. However, in long-term practical application, the liquid chlorine dioxide disinfectant is found to easily cause the over-standard of chlorite and chlorate when sterilizing and disinfecting drinking water, so that the national sanitation index cannot be reached.
At present, in a fierce market competition, although the disinfectant prepared by the new patent technology has certain advantages and certain market fields, the problem of only solving sterilization, disinfection and byproducts is not enough, the requirement of reducing the cost is more and more prominent, which is also a very important problem for users and directly influences the popularization of the market. Because the preparation process technology of the liquid chlorine dioxide disinfectant is limited, the preparation cost is higher than that of a chlorine dioxide generator, and thus, the water treatment cost is higher naturally, which is an objective reality difficult to change, so that the liquid chlorine dioxide disinfectant becomes a main obstacle for wider popularization and application, and no one has researched and solved so far.
Until now, no one has developed the technology for preparing liquid chlorine dioxide disinfectant (stable chlorine dioxide solution), and the following difficulties exist:
1. because the preparation method is adopted to produce the liquid chlorine dioxide disinfectant, the chlorine dioxide can be prepared only by adopting an oxidation process technical formula, the price of the raw materials of the oxidant adopting the oxidation process is very high and is higher than that of the oxidant adopting other preparation methods, and other oxidants cannot be replaced, so the preparation method has great limitation on the process technology, and the preparation cost is high and cannot be avoided at all.
2. When considering the case of making a reference on another raw material hydrochloric acid, since the reaction of the oxidation method is carried out at normal temperature, the acidity of the reaction solution is required to have a certain range, and even if the acidity is changed, it is limited, and it is difficult to change the reduction of the production cost.
Aiming at the current situation of liquid chlorine dioxide disinfectant, the problem of reduction of preparation cost is solved, and under limited conditions, further technical research and development and technical innovation are needed to reduce the preparation cost, so that the aim of reducing water treatment cost is fulfilled.
Disclosure of Invention
The invention aims to provide a method and a device for preparing a liquid chlorine dioxide disinfectant. The method utilizes the novel process formula of the agent B solution to carry out reasonable proportioning, then carries out reasonable proportioning with the original agent A solution, and can prepare high-yield high-purity chlorine dioxide gas through activation operation.
The invention aims to solve the problems in the prior art and better expand the application market, and only can improve the yield (yield) of chlorine dioxide as much as possible in the reaction process on the basis of the original patent technology for developing the liquid disinfectant, so that the preparation cost of the liquid disinfectant is reduced on the basis of ensuring that chlorite and chlorate do not exceed standards, and the cost of water treatment is further reduced. Therefore, it is necessary to start with the chemical reaction, study the reaction state, improve the reaction efficiency, and develop a liquid disinfectant with higher yield. Therefore, it has become a serious technical research topic that has never been done for liquid chlorine dioxide disinfectants. Through continuous research and improvement, the scheme of the invention is finally obtained, a new patented technology for preparing the liquid disinfectant is developed, the yield (yield) of the chlorine dioxide is improved on the basis of ensuring that chlorite and chlorate do not exceed the standard, the preparation cost is reduced, the great trouble of drinking water disinfection is solved, and the invention is recognized.
The invention aims to provide a new process formula for hydrochloric acid solution on the basis of originally prepared two materials of sodium chlorite solution (agent A) and hydrochloric acid solution (agent B) according to the limitation of the existing preparation process technology, to prepare a new hydrochloric acid mixed solution (agent B) by reasonable proportioning, and to prepare a new process method for preparing the liquid chlorine dioxide disinfectant by combining the new hydrochloric acid mixed solution (agent B) with the original agent A.
The invention still uses sodium chlorite and hydrochloric acid as basic raw materials, but adds two solid organic matters as accelerating agent into the hydrochloric acid solution, and controls a certain liquid-solid ratio and solid-solid ratio, at the same time, strictly controls the volume ratio of A and B agents, and makes the raw materials fully activated and reacted in the adding equipment under the normal temperature and a certain reaction time, and the reaction principle is as follows:
5NaClO 2 +4HCl + accelerator =4ClO 2 ↑+5NaCl+2H 2 O
Through the action of the two promoters, the original reaction state and reaction process are changed, the reaction efficiency is improved, the continuous proceeding of the main reaction is promoted, and the high-efficiency output of the high-purity chlorine dioxide gas can be realized.
A method of formulating a liquid chlorine dioxide disinfectant comprising the steps of: respectively preparing an agent A and an agent B, adding the agent A and the agent B into a dosing device together for an activation reaction, continuously aerating to generate high-purity and high-activity chlorine dioxide gas, wherein the yield of the high-purity and high-activity chlorine dioxide gas is more than 85%, and delivering the high-purity and high-activity chlorine dioxide gas to a drinking water application place through the dosing device;
the agent A is a sodium chlorite solution, the agent B is a hydrochloric acid mixed solution and comprises a hydrochloric acid solution, an accelerant I and an accelerant II, the accelerant I is citric acid, and the accelerant II is oxalic acid.
The sodium chlorite solution and the hydrochloric acid solution in the invention are solutions with the concentration of 4 percent in the traditional technology.
By adopting the agent B solution, the effective reaction of producing target products is well solved and the reaction yield of the products is improved on the basis of effectively controlling the byproducts such as chlorite, chlorate and the like not to exceed the standard. The novel process method not only ensures the safe and stable reaction, but also promotes the effective and continuous reaction under the concentration and the proportion of the agent B solution.
The method for preparing the liquid chlorine dioxide disinfectant comprises the following steps of (1) preparing the agent B, wherein the mass ratio of the hydrochloric acid (31% of pure hydrochloric acid) to the sum of the mass of the citric acid and the mass of the oxalic acid in the agent B is 1: 0.255-0.5.
The method for preparing the liquid chlorine dioxide disinfectant comprises the following steps of (1): 3.6 to 8.0.
The method for preparing the liquid chlorine dioxide disinfectant comprises the following steps of (1): 1.01 to 1.04.
The method for preparing the liquid chlorine dioxide disinfectant comprises the step of carrying out activation reaction at normal temperature.
The method for preparing the liquid chlorine dioxide disinfectant, disclosed by the invention, has the advantage that the activation reaction time is 15-20 min.
A preparation device of a hydrochloric acid mixed solution comprises a hydrochloric acid dilution mixing tank, and a first hydrochloric acid mixer and a second hydrochloric acid mixer which are connected with the hydrochloric acid dilution mixing tank respectively, wherein the first hydrochloric acid mixer is connected with an accelerator I dissolving tank, and the second hydrochloric acid mixer is connected with an accelerator II dissolving tank;
the hydrochloric acid dilution mixing tank is connected with a circulating pump, and the circulating pump is respectively connected with the finished product tank, the first hydrochloric acid mixer, the accelerator I dissolving tank, the second hydrochloric acid mixer and the accelerator II dissolving tank through pipelines.
The invention relates to a preparation device of a hydrochloric acid mixed solution, wherein a hydrochloric acid solution inlet and a water inlet are formed in a hydrochloric acid dilution mixing tank, an outlet of a first hydrochloric acid mixer is connected with an inlet of the hydrochloric acid dilution mixing tank, an outlet of a second hydrochloric acid mixer is connected with an inlet of the hydrochloric acid dilution mixing tank, an inlet of a solid accelerator I is formed in an accelerator I dissolving tank, and an inlet of a solid accelerator II is formed in an accelerator II dissolving tank;
the outlet of the accelerator I dissolving tank is connected with the middle inlet of the first hydrochloric acid mixer, and the outlet of the accelerator II dissolving tank is connected with the middle inlet of the second hydrochloric acid mixer.
The invention relates to a preparation device of a hydrochloric acid mixed solution, wherein an outlet of a hydrochloric acid dilution mixing tank is connected with an inlet of a circulating pump, and an outlet of the circulating pump is respectively connected with a finished product tank, an accelerator II dissolving tank, a second hydrochloric acid mixer, an accelerator I dissolving tank and a first hydrochloric acid mixer through a first branch pipe, a second branch pipe, a third branch pipe, a fourth branch pipe and a fifth branch pipe; and a filling opening is formed in the finished product groove, and a first valve, a second valve, a third valve, a fourth valve and a fifth valve are respectively arranged on the first branch pipe, the second branch pipe, the third branch pipe, the fourth branch pipe and the fifth branch pipe.
The method for preparing the hydrochloric acid mixed solution by adopting the preparation device of the hydrochloric acid mixed solution comprises the following steps: (1) Pouring hydrochloric acid into a hydrochloric acid dilution mixing tank filled with water, and mixing the hydrochloric acid in an accelerator I dissolving tank and an accelerator II dissolving tank according to a mass ratio of 1: 3.6-8.0, respectively adding citric acid and oxalic acid, wherein the mass ratio of the hydrochloric acid to the sum of the mass of the citric acid and the mass of the oxalic acid is 1: 0.255-0.5; closing the first valve, the third valve and the fourth valve, opening the second valve and the fifth valve, and fully mixing under the action of the circulating pump;
(2) Opening the third valve and the fourth valve, and continuing to fully mix;
(3) And after the hydrochloric acid mixed solution meeting the requirements is obtained, closing the second valve, the third valve, the fourth valve and the fifth valve, opening the first valve, and conveying the mixture to a finished product tank for filling.
The method for preparing the liquid chlorine dioxide disinfectant is different from the prior art in that:
the novel method for preparing the liquid chlorine dioxide disinfectant is based on the preparation method of the prior patent technology, further optimization and improvement are carried out according to the state situation of the reaction process, although the binary materials are still reacted, the traditional method that only hydrochloric acid is used as the agent B is broken through, two promoters are added into the agent B, a certain formula and proportion are adopted, the formula and proportion of the preparation method of the prior patent are changed, and the novel method is an innovative method for carrying out effective and continuous reaction on the state of the reaction process, and compared with the preparation method of the prior patent, the novel method not only reduces the hydrochloric acid amount, but also improves the yield of chlorine dioxide and reduces the preparation cost (shown in table 1) on the basis of equivalent conversion rate; more importantly, chlorite generated after reaction is obviously reduced, the highest yield of the prepared disinfectant is realized (see table 2), the requirements of customers are met, the problem of preparation cost which is always concerned by the customers is solved, the use amount of chlorine dioxide is reduced, and meanwhile, the qualification of various indexes in drinking water can be ensured through the detection of a third-party detection mechanism, particularly, the byproduct salt does not exceed the standard, and the national sanitation index is completely reached (see table 3).
Compared with the prior patent preparation method, the novel method for preparing the liquid chlorine dioxide disinfectant has the main advantages that: the yield of chlorine dioxide after reaction is high, the yield is improved by 20.19%, the yield of chlorine dioxide not only meets the national standard (more than or equal to 70%), but also improves 14.95 percentage points, the use amount of hydrochloric acid is reduced by 10%, the preparation cost is reduced by 11.24%, on the basis that the use amount of chlorine dioxide is reduced by 30% in disinfection, not only the hygienic index is all qualified, especially chlorite is reduced by 184.44%, chlorite is greatly reduced from the aspect of the disinfectant, so that the hygienic index is ensured to be all qualified after being applied to the disinfection of drinking water, the excellent performance of a new preparation method is reflected, an unprecedented ideal effect is achieved, all other prepared disinfectants cannot reach, and the new breakthrough is realized, and a wider and better situation is opened for the disinfection of pure chlorine dioxide in drinking water; meanwhile, the liquid disinfectant is more convenient to apply, the application effect is greatly improved, the user praise is obtained, and a solid foundation is laid for further popularization and application of the prepared disinfectant.
Compared with the original traditional preparation device, the special device for preparing the liquid chlorine dioxide disinfectant B is mainly characterized in that a dissolving tank of an accelerant I and an accelerant II is additionally arranged, a hydrochloric acid mixing dissolver is adopted, hydrochloric acid is better contacted and mixed with the accelerant, mixing time is prolonged, solid materials are fully dissolved and mixed, effective components are fully dissolved, the quality of a hydrochloric acid mixed solution is guaranteed to be good and stable, the novel dissolving and mixing method is an innovative dissolving and mixing method, the activation reaction of the liquid A and the liquid B is continuously and effectively carried out, the reaction yield is improved, the generation of byproduct salt is reduced, and a positive promotion effect is achieved. The new special device and the dissolving method for preparing the agent B lay an important basic condition for the qualification of each index of the disinfectant.
The method for preparing the liquid chlorine dioxide disinfectant of the invention is further explained by combining the attached drawings.
Drawings
Fig. 1 is a schematic structural diagram of a device for preparing a hydrochloric acid mixed solution according to the present invention.
Detailed Description
Example 1
A method of formulating a liquid chlorine dioxide disinfectant comprising the steps of: respectively preparing an agent A and an agent B, adding the agent A and the agent B into a dosing device together for an activation reaction, and sending high-purity and high-activity chlorine dioxide gas generated by the reaction to a drinking water application place through the dosing device by continuous aeration;
the agent A is a sodium chlorite solution, the agent B is a hydrochloric acid mixed solution and comprises a hydrochloric acid solution, an accelerant I and an accelerant II, the accelerant I is citric acid, and the accelerant II is oxalic acid.
In the agent B, the mass ratio of the hydrochloric acid to the sum of the citric acid and the oxalic acid is 1: 0.255-0.5, wherein the mass ratio of citric acid to oxalic acid is 1:3.6 to 8.0; the reaction volume ratio of the solution of the agent A to the solution of the agent B is 1:1.01 to 1.04, the temperature of the activation reaction is normal temperature, and the time of the activation reaction is 15 to 20min.
Example 2
In example 1, the agent B is preferably disposed by using the following apparatus:
a preparation device of a hydrochloric acid mixed solution comprises a hydrochloric acid dilution mixing tank 6, and a first hydrochloric acid mixer 3 and a second hydrochloric acid mixer 10 which are respectively connected with the hydrochloric acid dilution mixing tank, wherein the first hydrochloric acid mixer 3 is connected with an accelerator I dissolving tank 2, and the second hydrochloric acid mixer 10 is connected with an accelerator II dissolving tank 11;
the hydrochloric acid dilution mixing tank 6 is connected with a circulating pump 7, and the circulating pump 7 is respectively connected with a finished product tank 8, a first hydrochloric acid mixer 3, an accelerator I dissolving tank 2, a second hydrochloric acid mixer 10 and an accelerator II dissolving tank 11 through pipelines.
A hydrochloric acid solution inlet 4 and a water inlet 5 are arranged on a hydrochloric acid dilution mixing tank 6, an outlet of a first hydrochloric acid mixer 3 is connected with an inlet of the hydrochloric acid dilution mixing tank 6, an outlet of a second hydrochloric acid mixer 10 is connected with an inlet of the hydrochloric acid dilution mixing tank 6, an inlet 1 of a solid accelerator I is arranged on an accelerator I dissolving tank 2, and an inlet 12 of a solid accelerator II is arranged on an accelerator II dissolving tank 11;
the outlet of the promoter I dissolving tank 2 is connected with the middle inlet of the first hydrochloric acid mixer 3, and the outlet of the promoter II dissolving tank 11 is connected with the middle inlet of the second hydrochloric acid mixer 10.
An outlet of the hydrochloric acid dilution mixing tank 6 is connected with an inlet of a circulating pump 7, and an outlet of the circulating pump 7 is respectively connected with a finished product tank 8, an accelerator II dissolving tank 11, a second hydrochloric acid mixer 10, a first hydrochloric acid mixer 3 and an accelerator I dissolving tank 2 through a first branch pipe, a second branch pipe, a third branch pipe, a fourth branch pipe and a fifth branch pipe; the finished product groove 8 is provided with a filling opening 9, and the first branch pipe, the second branch pipe, the third branch pipe, the fourth branch pipe and the fifth branch pipe are respectively provided with a first valve, a second valve, a third valve, a fourth valve and a fifth valve.
Example 3
The method for preparing the hydrochloric acid mixed solution by using the preparation device of the hydrochloric acid mixed solution in the embodiment 2 comprises the following steps:
pouring hydrochloric acid into a hydrochloric acid dilution mixing tank 6 filled with water, and mixing the hydrochloric acid and the water in an accelerator I dissolving tank 2 and an accelerator II dissolving tank 11 according to a mass ratio of 1: 3.6-8.0, respectively adding citric acid and oxalic acid, wherein the mass ratio of hydrochloric acid to the sum of the citric acid and the oxalic acid is 1: 0.255-0.5; the first valve, the third valve and the fourth valve are closed, the second valve and the fifth valve are opened, and full mixing is carried out under the action of the circulating pump 7 (about mixing for 30 min);
step two, opening the third valve and the fourth valve, and continuing to fully mix (about 4 hours for mixing);
and step three, after the hydrochloric acid mixed solution meeting the requirements is obtained, closing the second valve, the third valve, the fourth valve and the fifth valve, opening the first valve, and conveying the mixture to a finished product tank 8 for filling.
When the activation reaction is applied on site:
1 before application, proportionally sending an original sodium chlorite solution A agent and a hydrochloric acid mixed solution B agent to a feeding device for mixing;
2, generating high-purity and high-activity chlorine dioxide gas through an activation reaction for a certain time at normal temperature, and directly delivering the high-purity and high-activity chlorine dioxide gas to a drinking water application place.
Wherein the reaction volume ratio of the solution of the agent A to the solution of the agent B is 1:1.01 to 1.04, the temperature of the activation reaction is normal temperature, and the time of the activation reaction is 15 to 20min.
Example 4
A novel method for preparing a liquid chlorine dioxide disinfectant comprises the following steps:
the mass ratio of the original sodium chlorite solution (A agent) to the mass sum of hydrochloric acid and two promoters is 1:0.255, and the mass ratio of the accelerator I to the accelerator II is 1:3.6, preparing a hydrochloric acid mixed solution (agent B), wherein the volume ratio of the agent A solution to the agent B solution is 1:1.01, the chlorine dioxide is added into a feeding device together for activation reaction, and high-purity and high-activity chlorine dioxide gas is generated by the reaction through continuous aeration. The reaction temperature is controlled to be normal temperature, and the reaction time is controlled to be 20min.
After the activation reaction, sampling, analyzing and detecting the reaction solution, wherein the detection result is as follows: the yield (yield) of the chlorine dioxide is 87.8 percent, which is 11.89 percent higher than that of the original disinfectant; the preparation cost is 0.0382 yuan, which is 11.06 percent lower than that of the original disinfectant.
Example 5
A novel method for preparing a liquid chlorine dioxide disinfectant comprises the following steps:
the mass ratio of the original sodium chlorite solution (A agent) to the mass sum of hydrochloric acid and two promoters is 1:0.278, and the mass ratio of the accelerator I to the accelerator II is 1:4.0 (agent B), wherein the volume ratio of the agent A solution to the agent B solution is 1:1.02, adding the chlorine dioxide into a feeding device for activation reaction, and generating high-purity and high-activity chlorine dioxide gas through continuous aeration. The reaction temperature is controlled to be normal temperature, and the reaction time is controlled to be 18min.
After the activation reaction, sampling, analyzing and detecting the reaction solution, wherein the detection result is as follows: the yield (yield) of chlorine dioxide is 88.8 percent, which is 14.95 percent higher than that of the original disinfectant; the preparation cost is 0.038 yuan, which is 11.24% lower than that of the original disinfectant.
Example 6
A novel method for preparing a liquid chlorine dioxide disinfectant comprises the following steps:
the mass ratio of the original sodium chlorite solution (A agent) to the mass sum of hydrochloric acid and two promoters is 1:0.389, and the mass ratio of the accelerator I to the accelerator II is 1:5.97 (agent B), the volume ratio of the agent A solution to the agent B solution is 1:1.03, adding the chlorine dioxide into a feeding device together for activation reaction, and generating high-purity and high-activity chlorine dioxide gas through continuous aeration. The reaction temperature is controlled to be normal temperature, and the reaction time is controlled to be 17min.
After the activation reaction, sampling, analyzing and detecting the reaction solution, wherein the detection result is as follows: the yield (yield) of the chlorine dioxide is 90.6 percent, which is 16.75 percent higher than that of the original disinfectant; the preparation cost is 0.04 yuan, which is 7.08% lower than the original disinfectant.
Example 7
A novel method for preparing a liquid chlorine dioxide disinfectant comprises the following steps:
the mass ratio of the original sodium chlorite solution (A agent) to the mass sum of hydrochloric acid and two promoters is 1:0.5, and the mass ratio of the accelerator I to the accelerator II is 1:8.0 (agent B), according to the volume ratio of the agent A solution to the agent B solution being 1:1.04, adding the raw materials into a feeding device for activation reaction, and generating high-purity and high-activity chlorine dioxide gas through continuous aeration. The reaction temperature is controlled to be normal temperature, and the reaction time is controlled to be 16min.
After the activation reaction, sampling, analyzing and detecting the reaction solution, wherein the detection result is as follows: the yield (yield) of the chlorine dioxide is 87.7 percent, which is improved by 14.05 percent compared with the original disinfectant; the preparation cost is 0.0428 yuan, which is reduced by 0.44% compared with the original disinfectant.
Comparative test data for the manufacturing costs, new test formulations and sterilization test results are shown in tables 1, 2 and 3.
TABLE 1 comparison table of preparation cost of two disinfectants
TABLE 2 comparison table of testing data between new research and development formula and existing patent formula
The newly developed formulations one to four in the table are the formulations of examples 4 to 7, wherein the formulation of example 5 is considered as the optimum formulation in all respects.
TABLE 3 comparison of the results of the chlorine dioxide disinfectant general disinfectant performance test
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.
Claims (5)
1. A method of formulating a liquid chlorine dioxide disinfectant, the method characterized by: the method comprises the following steps: respectively preparing an agent A and an agent B, adding the agent A and the agent B into a dosing device together for an activation reaction, and sending high-purity and high-activity chlorine dioxide gas generated by the reaction to a drinking water application place through the dosing device by continuous aeration;
the agent A is a sodium chlorite solution, the agent B is a hydrochloric acid mixed solution and comprises a hydrochloric acid solution, an accelerant I and an accelerant II, the accelerant I is citric acid, and the accelerant II is oxalic acid;
in the agent B, the mass ratio of the hydrochloric acid to the sum of the mass of the citric acid and the mass of the oxalic acid is 1:0.255 to 0.5;
the mass ratio of the citric acid to the oxalic acid is 1:3.6 to 8.0;
the reaction volume ratio of the solution of the agent A to the solution of the agent B is 1:1.01 to 1.04.
2. A method of formulating a liquid chlorine dioxide disinfectant as set forth in claim 1, wherein: the temperature of the activation reaction is normal temperature.
3. A method of formulating a liquid chlorine dioxide disinfectant as set forth in claim 2, wherein: the time of the activation reaction is 15-20 min.
4. The preparation device of the hydrochloric acid mixed solution is characterized in that: the accelerator solution preparation device comprises a hydrochloric acid dilution mixing tank (6), and a first hydrochloric acid mixer (3) and a second hydrochloric acid mixer (10) which are respectively connected with the hydrochloric acid dilution mixing tank, wherein the first hydrochloric acid mixer (3) is connected with an accelerator I dissolving tank (2), and the second hydrochloric acid mixer (10) is connected with an accelerator II dissolving tank (11);
the hydrochloric acid dilution mixing tank (6) is connected with a circulating pump (7), and the circulating pump (7) is respectively connected with a finished product tank (8), the first hydrochloric acid mixer (3), the accelerator I dissolving tank (2), the second hydrochloric acid mixer (10) and the accelerator II dissolving tank (11) through pipelines;
a hydrochloric acid solution inlet (4) and a water inlet (5) are formed in the hydrochloric acid dilution mixing tank (6), an outlet of the first hydrochloric acid mixer (3) is connected with an inlet of the hydrochloric acid dilution mixing tank (6), an outlet of the second hydrochloric acid mixer (10) is connected with an inlet of the hydrochloric acid dilution mixing tank (6), an inlet (1) of a solid accelerator I is formed in the accelerator I dissolving tank (2), and an inlet (12) of a solid accelerator II is formed in the accelerator II dissolving tank (11);
an outlet of the hydrochloric acid dilution mixing tank (6) is connected with an inlet of the circulating pump (7), and an outlet of the circulating pump (7) is respectively connected with the finished product tank (8), the accelerator II dissolving tank (11), the second hydrochloric acid mixer (10), the first hydrochloric acid mixer (3) and the accelerator I dissolving tank (2) through a first branch pipe, a second branch pipe, a third branch pipe, a fourth branch pipe and a fifth branch pipe; and a filling opening (9) is formed in the finished product groove (8), and a first valve, a second valve, a third valve, a fourth valve and a fifth valve are respectively arranged on the first branch pipe, the second branch pipe, the third branch pipe, the fourth branch pipe and the fifth branch pipe.
5. The method for preparing a hydrochloric acid mixed solution by using the apparatus for preparing a hydrochloric acid mixed solution according to claim 4, characterized in that: the method comprises the following steps:
pouring hydrochloric acid into a hydrochloric acid dilution mixing tank (6) filled with water, and adding hydrochloric acid into an accelerator I dissolving tank (2) and an accelerator II dissolving tank (11) according to a mass ratio of 1: 3.6-8.0, respectively adding citric acid and oxalic acid, wherein the mass ratio of the hydrochloric acid to the sum of the mass of the citric acid and the mass of the oxalic acid is 1:0.255 to 0.5; the first valve, the third valve and the fourth valve are closed, the second valve and the fifth valve are opened, and the first valve, the third valve and the fourth valve are fully mixed under the action of a circulating pump (7);
step two, opening the third valve and the fourth valve, and continuing to fully mix;
and step three, after the hydrochloric acid mixed solution meeting the requirements is obtained, closing the second valve, the third valve, the fourth valve and the fifth valve, opening the first valve, and conveying the mixture to a finished product tank (8) for filling.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911308676.6A CN111017880B (en) | 2019-12-18 | 2019-12-18 | Method and device for preparing liquid chlorine dioxide disinfectant |
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| CN201911308676.6A CN111017880B (en) | 2019-12-18 | 2019-12-18 | Method and device for preparing liquid chlorine dioxide disinfectant |
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| CN111017880A CN111017880A (en) | 2020-04-17 |
| CN111017880B true CN111017880B (en) | 2023-04-07 |
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| CN201911308676.6A Active CN111017880B (en) | 2019-12-18 | 2019-12-18 | Method and device for preparing liquid chlorine dioxide disinfectant |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140302176A1 (en) * | 2011-10-14 | 2014-10-09 | Infracor Gmbh | Method of treating water with chlorine dioxide |
| CN108439342A (en) * | 2018-06-14 | 2018-08-24 | 四川蒙顶山化工有限公司 | A method of preparing disinfection agent of chlorine dioxide |
| CN211497052U (en) * | 2019-12-18 | 2020-09-15 | 四川蒙顶山化工有限公司 | Device for preparing hydrochloric acid mixed solution in production of liquid chlorine dioxide disinfectant |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140302176A1 (en) * | 2011-10-14 | 2014-10-09 | Infracor Gmbh | Method of treating water with chlorine dioxide |
| CN108439342A (en) * | 2018-06-14 | 2018-08-24 | 四川蒙顶山化工有限公司 | A method of preparing disinfection agent of chlorine dioxide |
| CN211497052U (en) * | 2019-12-18 | 2020-09-15 | 四川蒙顶山化工有限公司 | Device for preparing hydrochloric acid mixed solution in production of liquid chlorine dioxide disinfectant |
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