Composition containing chlorine salt and application thereof

Abstract

The invention discloses a chlorine salt-containing composition and application thereof, and belongs to the technical field of electrolyzed water. The citric acid and the specific buffering agent are added into the chlorine-containing salt, and the citric acid and the specific buffering agent are controlled to be in specific dosages, so that when the obtained chlorine-containing composition is applied to preparation of electrolyzed water, the pH value of a solution can be maintained within the range of 3.8-6.5 in the electrolysis process, hypochlorite mainly exists in the form of hypochlorous acid, and the water quality of the electrolyzed water is improved. Meanwhile, the concentration of hypochlorite in the electrolyzed water is relatively high, so that the concentration of hypochlorous acid in the electrolyzed water is relatively high; in addition, the obtained electrolyzed water is used for sterilization and deodorization, the pH value of the electrolyzed water is stable in the sterilization and deodorization process, and efficient sterilization and deodorization can be achieved easily.

Description

Technical Field

[0001] The present application relates to the technical field of water electrolysis, and in particular to a chloride-containing salt composition and application thereof. Background Art

[0002] In the current industry, electrolysis water disinfection technology mainly relies on the electrolysis of chloride ions inherent in tap water to produce a solution with a disinfecting effect. However, there are significant differences in the chloride ion content of tap water in different regions, and the chloride ion concentration in most regions is low, which limits the scope of application of the electrolysis tap water disinfection method and makes it difficult for the sterilization effect of the obtained disinfected water to meet the expected standards.

[0003] Adding sodium chloride to tap water can increase the chloride ion concentration. However, on the one hand, the hypochlorite produced by electrolysis mostly exists in the form of sodium hypochlorite, and the disinfection and sterilization ability of sodium hypochlorite is weaker than that of hypochlorous acid. On the other hand, the electrolyzed water produced is neutral or alkaline, and tap water contains calcium and magnesium ions, which will cause scale to form on the surface of the electrolysis module during the electrolysis process, thereby affecting the life of the electrolysis module. Summary of the invention

[0004] Based on the defects of the prior art, the purpose of the present application is to provide a chloride-containing salt composition and its application.

[0005] In order to achieve the above-mentioned object, in a first aspect, the present application provides a chloride-containing salt composition, comprising the following components by weight: 4 to 6 parts of chloride-containing salt, 1 to 5 parts of citric acid, and 1 to 10 parts of buffer;

[0006] The ratio of the total weight of the chloride-containing salt and the buffer to the weight of the citric acid is ≥ 2.4;

[0007] Wherein, the buffer includes at least one of sodium citrate and disodium hydrogen phosphate.

[0008] The pH value of the solution during electrolysis affects the conversion form of chloride ions, such as Figure 1 As shown, if the pH value of the solution is too low during the electrolysis process, chloride ions will be mainly converted into chlorine gas and diffused into the air; if it is too high, the generated hypochlorous acid will be converted into sodium hypochlorite, and the disinfection ability of hypochlorous acid is 80 times that of sodium hypochlorite, resulting in a decrease in the disinfection ability of the solution. The chlorine-containing composition is compounded by a chloride-containing salt with citric acid and a specific buffer in a specific ratio, so that when it is used to prepare electrolyzed water, the pH value of the solution can be maintained in the range of 3.8 to 6.5 during the electrolysis process, so that the hypochlorite ion mainly exists in the form of hypochlorous acid, and the concentration of hypochlorite ion in the obtained electrolyzed water is relatively high, so that the concentration of hypochlorous acid in the electrolyzed water is relatively high, which is beneficial to disinfection, deodorization and descaling; in addition, the obtained electrolyzed water is used for sterilization and deodorization, and its pH value is stable during the sterilization and deodorization process, which can achieve efficient sterilization and deodorization.

[0009] During the research process, the inventors found that, compared with other acids, such as ascorbic acid, taurine, etc., when citric acid is used to make the chloride-containing salt composition used to prepare electrolyzed water, the concentration of hypochlorous acid in the obtained electrolyzed water is higher; compared with other buffers, such as carbonates, bicarbonates, etc., the use of the above-mentioned specific types of buffers will not consume citric acid, can maintain the pH value of the solution in the range of 3.8 to 6.5 during the electrolysis process, and is not easy to cause scaling of the electrolysis module.

[0010] The ratio of the total weight of the chloride-containing salt and the buffer to the weight of the citric acid is ≥ 2.4, for example, 2.4, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 8.5, 9, 9.5, 10, 10.5, 11, 11.5, 12, 12.5, 13, 13.5, 14, 14.5, 15 or an interval formed by any two of the above values.

[0011] Preferably, the ratio of the total weight of the chloride-containing salt and the buffer to the weight of the citric acid is 5 to 8.2. When the ratio of the total weight of the chloride-containing salt and the buffer to the weight of the citric acid is within this range, the pH value of the solution can be controlled between 5 and 6, which is closer to the pH value of the human body, and the chlorine is basically all in the form of hypochlorous acid, and the proportion is basically maintained at about 100%.

[0012] Preferably, the chloride-containing salt includes at least one of sodium chloride and potassium chloride.

[0013] Preferably, the chloride-containing salt composition is in powder or block form. The chloride-containing salt composition can be put into water in block form for electrolysis, or can be put into water in powder form for electrolysis. When the chloride-containing salt composition is put into water in powder form for electrolysis, the electrolysis efficiency is higher.

[0014] The preparation method of the chloride-containing salt composition is not limited. Exemplarily, the preparation method of the chloride-containing salt composition comprises the following steps: all raw materials are mixed and dispersed to obtain the chloride-containing salt composition. The dispersion method can be selected from conventional dispersion methods such as stirring.

[0015] In a second aspect, the present application provides the use of the chlorine-containing composition in preparing electrolyzed water.

[0016] In a third aspect, the present application provides a composition for preparing electrolyzed water, comprising the following components in parts by weight:

[0017] 0.3 to 1 part of the chlorine-containing composition,

[0018] 1000 parts of water.

[0019] When the composition for preparing electrolyzed water is electrolyzed to prepare electrolyzed water, the pH value is maintained in the range of 3.8 to 6.5 during the electrolysis process, and the concentration of hypochlorite in the obtained electrolyzed water is relatively high, so that the concentration of hypochlorous acid in the electrolyzed water is relatively high, which is beneficial for disinfection, deodorization and descaling. At the same time, the concentration of hypochlorite in the obtained electrolyzed water does not exceed 80 ppm, which has low damage to the skin and high safety. In addition, the obtained electrolyzed water is used for sterilization and deodorization, and its pH value is stable during the sterilization and deodorization process, so that efficient sterilization and deodorization can be achieved.

[0020] Preferably, the composition for preparing electrolyzed water is a solution.

[0021] In a fourth aspect, the present application provides electrolyzed water obtained by electrolyzing the composition for preparing electrolyzed water.

[0022] Preferably, the pH value of the electrolyte water is 3.8-6.5.

[0023] In a fifth aspect, the present application provides the use of the electrolyzed water in disinfection, deodorization and / or descaling of bathroom products.

[0024] Exemplarily, the bathroom product includes at least one of a toilet, a squat toilet, and a urinal.

[0025] Compared with the prior art, the beneficial effects of this application are:

[0026] (1) The present application adds citric acid and a specific buffer to a chlorine-containing salt and controls them in specific amounts, so that when the obtained chlorine-containing composition is used to prepare electrolyzed water, the pH value of the solution can be maintained in the range of 3.8 to 6.5 during the electrolysis process, so that hypochlorite ions mainly exist in the form of hypochlorous acid, and the concentration of hypochlorite ions in the obtained electrolyzed water is relatively high, thereby making the concentration of hypochlorous acid in the electrolyzed water relatively high; in addition, when the obtained electrolyzed water is used for sterilization and deodorization, its pH value is stable during the sterilization and deodorization process, which is conducive to achieving efficient sterilization and deodorization.

[0027] (2) When the chlorine-containing salt composition of the present application is used to prepare electrolyzed water, the obtained electrolyzed water has good sterilization, deodorization and descaling effects, and is suitable for sterilization, deodorization and descaling of sanitary products, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is the relationship diagram between the available chlorine content and the pH value;

[0029] Figure 2 This is a photograph of the chloride-containing salt composition of Comparative Example 9 after it was added into water. DETAILED DESCRIPTION

[0030] In order to better illustrate the purpose, technical scheme and advantages of the present application, the present application will be further described below in conjunction with specific embodiments and comparative examples, the purpose of which is to understand the content of the present application in detail, rather than to limit the present application. All other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application. The experimental reagents and instruments involved in the implementation of this application are all commonly used ordinary reagents and instruments unless otherwise specified. In the present application, the technical features described in an open manner include closed technical schemes composed of the listed features, and also include open technical schemes containing the listed features.

[0031] Examples 1 to 11 and Comparative Examples 1 to 9

[0032] Examples 1 to 11 and Comparative Examples 1 to 9 all provide a chloride-containing salt composition. The compositions of these chloride-containing salt compositions are shown in Table 1, and their preparation methods are the same, including the following steps: all raw material powders are mixed and dispersed to obtain the corresponding chloride-containing salt composition.

[0033] Table 1

[0034]

[0035] Table 2

[0036]

[0037]

[0038] The above-mentioned embodiments and comparative examples of chloride-containing salt compositions were added to 1000g of water, stirred and dispersed to obtain a solution to be electrolyzed, and its pH value was tested (the test method is the same as below), and then a non-diaphragm ruthenium iridium titanium electrode static electrolysis module was used, and the electrolysis module was installed in a 100mL small water tank, 50mL of the solution to be electrolyzed was taken and placed in the water tank, and electrolysis was started, and the electrolysis time was controlled to be 1min, and the voltage mode was constant voltage 12V electrolysis to obtain electrolyzed water, wherein the addition amount of the chloride-containing salt compositions of embodiments 1 to 11 and comparative examples 2 to 9 was 0.75g, and the addition amount of the chloride-containing salt composition of comparative example 1 was 0.25g. The obtained electrolyzed water was tested as follows:

[0039] pH value test: pH value test in sensory shape and physical indicators of GB / T 5750.4-2006 standard test method for drinking water;

[0040] Hypochlorite concentration test: refer to GB / T5750.11-2006 standard test method for drinking water, characterize the free residual chlorine in the disinfectant index, refer to 1.1N, N-diethyl-p-phenylenediamine (DPD) spectrophotometry;

[0041] pH stability test after ammonia deodorization reaction: hypochlorous acid solution was prepared by electrolysis, and 100 mL of the solution with a concentration of about 50 ppm was controlled. Then 2 mg of ammonia was dripped into it (converted by dropping ammonia water, the ammonia concentration was 3 wt.%), and its pH change was monitored.

[0042] The test results are shown in Table 3.

[0043] Table 3

[0044]

[0045]

[0046] Compared with Example 2, Comparative Example 1 did not add citric acid and buffer. Although the hypochlorite concentration in the obtained electrolyzed water was high, its pH value was high, resulting in too low a concentration of hypochlorous acid. At the same time, the pH value of the electrolyzed water after the ammonia deodorization reaction was high, which was not conducive to deodorization; Comparative Example 2 only added citric acid but no buffer, resulting in a low pH value of the electrolyzed water, a significant decrease in the hypochlorite concentration, and a low concentration of hypochlorous acid; Comparative Example 3 only added a buffer but no citric acid, the pH value of the electrolyzed water was high, the hypochlorite concentration was significantly decreased, the hypochlorous acid concentration was too low, and the pH value of the electrolyzed water after the ammonia deodorization reaction was high, which was not conducive to deodorization.

[0047] From the comparison of Examples 1 to 5 and Comparative Example 4, it can be seen that when the ratio of the total weight of the chloride-containing salt and the buffer to the weight of citric acid is ≥2.4, the pH value of the solution is in the range of 3.8 to 6.5 during the electrolysis process, and the hypochlorite concentration is high, so that the hypochlorous acid concentration of the obtained electrolyzed water is higher; preferably, the ratio of the total weight of the chloride-containing salt and the buffer to the weight of citric acid is 5 to 8.2, so that the pH value of the obtained electrolyzed water is controlled between 5 and 6, which is close to the pH value of the human body and is safer.

[0048] From the comparison between Examples 2, 6 to 8 and Comparative Example 5, it can be seen that the amount of the buffer should not be too high, otherwise the concentration of hypochlorous acid in the electrolyzed water will be too low, and the pH value of the electrolyzed water after the ammonia deodorization reaction will be high, which is not conducive to deodorization; from the comparison between Examples 7, 9 to 10 and Comparative Example 6, it can be seen that the amount of citric acid should not be too high, otherwise the concentration of hypochlorous acid in the electrolyzed water will be too low.

[0049] Compared with Example 2, Comparative Examples 7-8 use other acids instead of citric acid, and the concentration of hypochlorous acid in the obtained electrolyzed water is too low, and the pH value of the electrolyzed water after the ammonia deodorization reaction is high, which is not conducive to deodorization.

[0050] according to Figure 2 It can be seen that in Comparative Example 9, sodium carbonate is used as a buffer. After the corresponding chlorine-containing composition is added into water, the sodium carbonate reacts with the acid to generate a large amount of bubbles, which causes the acid to be unable to play an effective role in the electrolysis process.

[0051] Examples 12 to 16

[0052] Examples 12 to 16 all provide a chloride-containing salt composition. The compositions of these chloride-containing salt compositions are shown in Table 4, and their preparation methods are the same as those of Example 1.

[0053] The chlorine-containing salt compositions of Examples 12 to 16 were added to 1000 g of water in the amounts shown in Table 4, stirred and dispersed, the pH value was tested, and then electrolyzed water was prepared according to the aforementioned method and the electrolyzed water was tested accordingly. The test results are shown in Table 4.

[0054] Table 4

[0055]

[0056] It can be seen from the data in Tables 3 and 4 that the chlorine-containing composition of the present application is used to prepare electrolyzed water. During the electrolysis process, the pH value of the solution is maintained in the range of 3.8 to 6.5, and the concentration of hypochlorite in the obtained electrolyzed water is high, at 45 to 80 ppm. It can be seen that the obtained electrolyzed water has a high hypochlorous acid concentration while ensuring good safety; in addition, the pH value of the electrolyzed water after the ammonia deodorization reaction is below 7, indicating that its pH value is relatively stable during the deodorization process, which is conducive to achieving efficient deodorization.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present application rather than to limit the scope of protection of the present application. Although the present application has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the present application can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present application.

Claims

1. A chloride-containing salt composition, characterized in that The method comprises the following components in parts by weight: 4 to 6 parts of chloride-containing salt, 1 to 5 parts of citric acid, and 1 to 10 parts of buffer; The ratio of the total weight of the chloride-containing salt and the buffer to the weight of the citric acid is ≥ 2.4; Wherein, the buffer includes at least one of sodium citrate and disodium hydrogen phosphate.

2. The chlorine-containing salt composition according to claim 1, characterized in that The ratio of the total weight of the chloride-containing salt and the buffer to the weight of the citric acid is 5 to 8.

2.

3. The chlorine-containing salt composition according to claim 1, characterized in that The chloride-containing salt includes at least one of sodium chloride and potassium chloride.

4. The chlorine-containing salt composition according to claim 1, characterized in that The chloride-containing salt composition is in the form of powder or block.

5. Use of the chlorine-containing composition according to any one of claims 1 to 4 in the preparation of electrolyzed water.

6. A composition for preparing electrolyzed water, characterized in that: It includes the following components by weight: 0.3 to 1 part of the chlorine-containing composition according to any one of claims 1 to 4, 1000 parts of water.

7. An electrolyzed water, characterized in that: Obtained by electrolysis of the composition for preparing electrolyzed water as claimed in claim 5.

8. The electrolyzed water according to claim 7, characterized in that The pH value of the electrolyzed water is 3.8-6.

5.

9. Use of the electrolyzed water according to any one of claims 7 to 8 in disinfection, deodorization and / or descaling of sanitary products.

10. The use according to claim 9, characterized in that The bathroom product includes at least one of a toilet, a squat toilet, and a urinal.

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