Disinfectant production process for improving stability by utilizing synergistic effect

Abstract

The invention relates to the technical field of disinfectants, in particular to a disinfectant production process for improving stability by utilizing a synergistic effect. The method comprises the following steps: preparing raw materials, preparing and premixing a stabilizer solution, adding acetic acid and hydrogen peroxide, reacting, aging, filtering and treating a product. In the disinfectant production process for improving the stability by utilizing the synergistic effect, four stabilizers are prepared into dilute solutions and mixed in proportion, the dilute solutions and peracetic acid can generate the synergistic effect, decomposition of peracetic acid is inhibited from the molecular level, catalytic decomposition of hydrogen peroxide by metal ions is avoided through nonmetal material equipment with a light shielding system, and the stability of the disinfectant is improved. Decomposition reaction caused by illumination is prevented, and product stability is improved; meanwhile, in the aspect of safety, the explosion risk of a container during hydrogen peroxide storage and the injury to operators during mixing are avoided; and in the aspects of cost and convenience, the production cost is reduced, a consumer does not need to mix by himself, and the use convenience of the product is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of disinfectants, in particular to a disinfectant production process utilizing synergistic effects to improve stability. Background Art

[0002] As a highly effective disinfectant, peracetic acid is widely used in many fields such as medical care, food processing, and disinfection of public places. Its strong oxidizing properties can quickly kill bacteria, viruses, fungi and other microorganisms, making it an important disinfection and sterilization product.

[0003] However, peracetic acid itself suffers from poor stability and a short shelf life. To address this, conventional peracetic acid products are typically AB-type products, where A is acetic acid and B is hydrogen peroxide, and they must be mixed in proportion before use. While this ready-to-use AB-type product solves the stability issue of peracetic acid, it also introduces a series of new drawbacks. For example, from a safety perspective, Type B hydrogen peroxide decomposes and produces gas during storage, which can cause the packaging container to burst, resulting in product waste and potential safety incidents. During the mixing and preparation process, the reaction is violent, easily injuring operators and reducing safety. From a cost and convenience perspective, the two separate packaging components of the AB-type product increase production costs, and consumers need to mix the mixture themselves according to the proportions, which is relatively cumbersome and difficult to control, affecting the disinfection effect and reducing the product's ease of use.

[0004] In view of this, there is an urgent need for a disinfectant production process that utilizes synergistic effects to improve stability. Summary of the Invention

[0005] The object of the present invention is to provide a disinfectant production process that utilizes synergistic effects to improve stability, so as to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, according to Figure 1 and Figure 2 As shown, the present invention provides a disinfectant production process for improving stability by utilizing synergistic effects, comprising the following steps: S1. Prepare the following raw materials: 10-20 parts acetic acid, 10-30 parts hydrogen peroxide (hydrogen peroxide), and 0.4-2 parts of four stabilizers: phosphate, sodium glucoheptonic acid, phytic acid, and quinoline. Also, prepare equipment with a light-shielding system. The equipment is made of non-metallic materials to reduce metal side effects and the decomposition of hydrogen peroxide. The equipment includes at least a hydrogen peroxide feed tank for storing hydrogen peroxide, an acetic acid feed tank for storing acetic acid, a powder premixing tank, a reactor, and a multi-stage nanofiltration system (nanofiltration membrane system). The top of the powder premixing tank is provided with a high-pressure nitrogen supply device, which is used to promote the dispersion and mixing of the stabilizer and prevent agglomeration. The reactor is equipped with a diaphragm pump bottom feed circulation system. Both the hydrogen peroxide feed tank and the acetic acid feed tank are PE horizontal tanks, and the tank body and pipeline are protected from light. S2. Preparation and premixing of stabilizer solution: Phosphate, sodium glucoheptonic acid, phytic acid and quinoline are mixed with deionized water at a ratio of 1:10-20 to prepare a dilute solution. Then, the dilute solutions of the four stabilizers are pumped into a powder premixing tank at a ratio of 1:1:1:1. The solid high-pressure nitrogen feeding system is turned on to promote the dispersion and mixing of the stabilizer solution in the premixing tank by the high-pressure nitrogen to form a uniform stabilizer solution, which is then transported to the reactor through a pipeline; S3, adding acetic acid and hydrogen peroxide: start the reactor, use a diaphragm pump bottom feed circulation system to mix, at the same time, acetic acid is added to the reactor from the acetic acid feed tank at one time, so that the acetic acid is mixed with the stabilizer solution, and then hydrogen peroxide is added to the reactor from the hydrogen peroxide feed tank; the addition method adopts batch addition, divided into 5-8 batches, each batch is added in the same amount, and the addition rate is 0.5L / min-2L / min, so that the raw materials are evenly mixed to form a reaction mixture. During this process, the stabilizer and the generated peracetic acid begin to produce a synergistic effect, inhibiting the decomposition of peracetic acid; S4, reaction and aging: After the addition and mixing of the raw materials are completed, the diaphragm pump bottom feeding circulation system of the reactor is continuously opened, and the reaction temperature is controlled at 20°C-30°C. Under this temperature condition, the stabilizer and peracetic acid can fully act and exert a synergistic stabilization effect. After reacting for 3h-5h, the reaction mixture is aged in the reactor for another 1h-2h. At the same time, the circulation flow rate of the diaphragm pump bottom feeding circulation system is 0.2L / min-0.5L / min, which makes the reaction system more stable and further promotes the uniformity of the aging process; S5. Filtration and product processing: After the aging treatment of the reaction mixture is completed, the multi-stage nanofiltration system (nanofiltration membrane system) is turned on, and the reaction mixture is transported to the multi-stage nanofiltration system through a pipeline. The system is used to effectively remove particulate matter after the material reaction, making the product purer, and a peracetic acid product with a peracetic acid content of 0.3%-5.0% can be obtained, and the decomposition of peracetic acid is effectively inhibited. The finished peracetic acid disinfectant product.

[0007] In the present invention, dilute solutions of four stabilizers are injected into a reaction tank in proportion, and the reaction is followed by aging. This not only effectively exerts the synergistic stabilizing effect of the stabilizers and the product peracetic acid, but also effectively inhibits the decomposition of the peracetic acid. The stability of the peracetic acid product with a content of 0.3-5.0% is increased from 3 months to 24 months. At the same time, non-metallic equipment with a light-proof system is used, such as a hydrogen peroxide feed tank and an acetic acid feed tank both using PE horizontal tanks, and the tank body and pipeline are treated with light-proof protection. This can also effectively reduce metal side effects and hydrogen peroxide decomposition, improve the stability and quality of the peracetic acid product, and thus improve the safety of the production process and the stability of the product.

[0008] In addition, four stabilizers, namely phosphate, sodium glucoheptonic acid, phytic acid and quinoline, are respectively made into dilute solutions, mixed evenly in a powder premixing tank at a ratio of 1:1:1:1, and then transported to the reactor. When acetic acid and hydrogen peroxide react in the reactor to generate peracetic acid, the stabilizers and peracetic acid produce a synergistic effect; from a molecular level, these stabilizers may form hydrogen bonds or complexes with peracetic acid molecules, change the spatial structure and electron cloud distribution of peracetic acid molecules, enhance the intermolecular force, thereby increasing the stability of peracetic acid molecules and inhibiting their decomposition; when free radicals are generated by the decomposition of peracetic acid, the stabilizers can capture these free radicals in time. The presence of stabilizers can interrupt the chain decomposition reaction initiated by free radicals, effectively preventing the further decomposition of peracetic acid. In addition, the presence of stabilizers may also affect the chemical equilibrium of the peracetic acid decomposition reaction, prompting the reaction to move towards the production of peracetic acid and reducing the amount of decomposition. Moreover, since metal ions have a catalytic effect on the decomposition of hydrogen peroxide, the use of non-metallic equipment (such as PE horizontal tanks used in hydrogen peroxide feed tanks and acetic acid feed tanks) can avoid the catalytic effect of metal ions and reduce the decomposition of hydrogen peroxide. The light-shielding treatment of the tank body and pipeline can prevent light from triggering the decomposition reaction of hydrogen peroxide, thereby improving the stability of the peracetic acid product.

[0009] Compared with the prior art, the present invention has the following beneficial effects: In this disinfectant production process that uses synergistic effects to improve stability, by preparing four stabilizers into a dilute solution and mixing them in proportion, a synergistic effect can be produced with peracetic acid, inhibiting its decomposition at the molecular level, and significantly improving the stability of 0.3%-5.0% peracetic acid products from 3 months to 24 months; and through non-metallic material equipment with a light-proof system, the catalytic decomposition of hydrogen peroxide by metal ions is avoided, preventing decomposition reactions caused by light, thereby improving product stability; at the same time, in terms of safety, the risk of container explosion during hydrogen peroxide storage and harm to operators during mixing are avoided; in terms of cost and convenience, the use process is simplified, production costs are reduced, and consumers do not need to mix the solution themselves, avoiding the impact of improper mixing ratios on the disinfection effect, thereby improving the convenience of product use. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a flow chart of a disinfectant production process utilizing synergistic effects to improve stability according to the present invention; Figure 2 It is a flow chart of the disinfectant production equipment of the present invention. DETAILED DESCRIPTION

[0011] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of the present invention.

[0012] Example 1 Prepare raw materials: Weigh 10 parts acetic acid, 10 parts hydrogen peroxide (hydrogen peroxide), and 0.4 parts stabilizer, including 0.1 parts each of phosphate, sodium glucoheptonic acid, phytic acid, and quinoline. Prepare equipment with a light-shielding system, including a PE horizontal hydrogen peroxide feed tank for storing hydrogen peroxide, a PE horizontal acetic acid feed tank for storing acetic acid, a powder premixing tank connected to a high-pressure nitrogen supply device, a reactor equipped with a diaphragm pump bottom feed circulation system, and a multi-stage nanofiltration system (nanofiltration membrane system). The tanks and pipelines should be protected from light. Preparation and premixing of stabilizer solution: Phosphate, sodium glucoheptonic acid, phytic acid, and quinoline were mixed with deionized water at a ratio of 1:10 to prepare a dilute solution. The dilute solutions of the four stabilizers were then pumped into a powder premixing tank at a ratio of 1:1:1:1. The solid high-pressure nitrogen feeding system was turned on to promote the dispersion and mixing of the stabilizer solution in the premixing tank through high-pressure nitrogen to form a uniform stabilizer solution, which was then transported to the reactor through a pipeline. Adding acetic acid and hydrogen peroxide: Start the reactor and use a diaphragm pump bottom feed circulation system for mixing. At the same time, add acetic acid from the acetic acid feed tank to the reactor at one time to mix the acetic acid with the stabilizer solution. Then, add hydrogen peroxide from the hydrogen peroxide feed tank to the reactor; add in 5 batches, each with the same amount, at a rate of 0.5 L / min, to mix the raw materials evenly to form a reaction mixture. During this process, the stabilizer and the generated peracetic acid begin to produce a synergistic effect, inhibiting the decomposition of the peracetic acid; Reaction and aging: After all the raw materials are added and mixed, the bottom feed circulation system of the reactor is continuously turned on with the diaphragm pump, and the reaction temperature is controlled at 20°C. Under this temperature condition, the stabilizer and peracetic acid can fully react and exert a synergistic stabilization effect. After reacting for 3 hours, the reaction mixture is aged in the reactor for another 1 hour. At the same time, the circulation flow rate of the bottom feed circulation system of the diaphragm pump is 0.2L / min, which makes the reaction system more stable and further promotes the uniformity of the aging process. Filtration and product processing: After the aging treatment of the reaction mixture is completed, the multi-stage nanofiltration system (nanofiltration membrane system) is turned on, and the reaction mixture is transported to the multi-stage nanofiltration system through a pipeline. The system is used to effectively remove the particulate matter after the material reaction, making the product purer, and obtaining a peracetic acid product with a peracetic acid content of 0.3%, and the decomposition of peracetic acid is effectively inhibited. The finished product of peracetic acid disinfectant.

[0013] Example 2 Prepare the raw materials: weigh 15 parts of acetic acid, 20 parts of hydrogen peroxide (hydrogen peroxide), and 1.2 parts of a stabilizer, wherein the stabilizer contains 0.3 parts each of phosphate, sodium glucoheptonic acid, phytic acid, and quinoline; prepare a light-shielding device, the equipment being the same as in Example 1; Preparation and premixing of stabilizer solution: Phosphate, sodium glucoheptonic acid, phytic acid, and quinoline were mixed with deionized water at a ratio of 1:15 to prepare a dilute solution. The dilute solutions of the four stabilizers were then pumped into a powder premixing tank at a ratio of 1:1:1:1. The solid high-pressure nitrogen feeding system was turned on to form a uniform stabilizer solution, which was then delivered to the reactor. Add acetic acid and hydrogen peroxide: Start the reactor and the bottom feed circulation system of the diaphragm pump, add acetic acid all at once, and then add hydrogen peroxide from the hydrogen peroxide feed tank in 6 batches, with the same amount added in each batch at a rate of 1 L / min, so that all raw materials are evenly mixed to form a reaction mixture. The stabilizer plays a role in inhibiting the decomposition of peracetic acid; Reaction and aging: After the raw materials are mixed, the diaphragm pump bottom feeding circulation system is kept open, the reaction temperature is controlled at 25 ° C, and after 4 hours of reaction, the reaction mixture is aged for 1.5 hours. The circulation flow rate of the diaphragm pump bottom feeding circulation system is 0.3 L / min; Filtration and product processing: After aging, the product is filtered through a multi-stage nanofiltration system to obtain a peracetic acid product with a peracetic acid content of 2.5%, and the decomposition of peracetic acid is effectively inhibited.

[0014] Example 3 Prepare the raw materials: weigh 20 parts of acetic acid, 30 parts of hydrogen peroxide (hydrogen peroxide), and 2 parts of a stabilizer, wherein the stabilizer contains 0.5 parts each of phosphate, sodium glucoheptonic acid, phytic acid, and quinoline; prepare a light-shielding device with the same configuration as in Example 1; Preparation and premixing of stabilizer solution: Phosphate, sodium glucoheptonic acid, phytic acid, and quinoline were mixed with deionized water at a ratio of 1:20 to prepare a dilute solution. The dilute solutions of the four stabilizers were then pumped into a powder premixing tank at a ratio of 1:1:1:1. The solid high-pressure nitrogen feeding system was turned on to form a uniform stabilizer solution, which was then transported to the reactor. Add acetic acid and hydrogen peroxide: Start the reactor and the bottom feed circulation system of the diaphragm pump. After adding acetic acid, add hydrogen peroxide from the hydrogen peroxide feed tank in 8 batches. The addition amount of each batch is the same. The addition rate is 2L / min. The raw materials are mixed evenly to form a reaction mixture. The stabilizer inhibits the decomposition of peracetic acid. Reaction and aging: After the raw materials are added and mixed, the diaphragm pump bottom feeding circulation system is continuously opened, the reaction temperature is controlled at 30°C, and after the reaction for 5 hours, the reaction mixture is aged for 2 hours. The circulation flow rate of the diaphragm pump bottom feeding circulation system is 0.5L / min; Filtration and product processing: After the aging treatment is completed, the product is filtered through a multi-stage nanofiltration system to obtain a peracetic acid product with a content of 5.0%, and the decomposition of peracetic acid is effectively inhibited. The finished product of peracetic acid disinfectant.

[0015] Table 1 Amounts of raw materials used in Examples 1-3

[0016] In order to verify that the disinfectant prepared in the embodiment of the present invention has good stability and safety, the disinfectant provided in the embodiment of the present invention is described through the following test examples.

[0017] Test example The purpose of this test group is to explore the effects of different ingredient ratios on the disinfectant and to test the stability, safety and disinfection effect of the disinfectant of the present invention.

[0018] Test objectives: Test group A, test group B and test group C respectively use the component ratios of the disinfectants provided in Examples 1-3; the control examples use control group A, control group B, control group C and control group D, wherein: Control group A Prepare the raw materials: weigh 10 parts of acetic acid and 10 parts of hydrogen peroxide (hydrogen peroxide) without adding a stabilizer; prepare a light-shielding device, the equipment conditions of which are the same as those in Example 1; Adding acetic acid and hydrogen peroxide: Start the reactor and use a diaphragm pump bottom feed circulation system for mixing. At the same time, add acetic acid from the acetic acid feed tank to the reactor at one time. Then, add hydrogen peroxide from the hydrogen peroxide feed tank to the reactor; add in 5 batches, each with the same amount, at a rate of 0.5 L / min, to ensure that all raw materials are evenly mixed to form a reaction mixture; Reaction and aging: After all raw materials were added and mixed, the bottom feed circulation system of the diaphragm pump of the reactor was kept open, and the reaction temperature was controlled at 20°C. After the reaction for 3 hours, the reaction mixture was aged in the reactor for another hour. At the same time, the circulation flow rate of the bottom feed circulation system of the diaphragm pump was 0.2L / min. Filtration and Product Processing: After aging the reaction mixture, a multi-stage nanofiltration system (nanofiltration membrane system) was activated and piped through the system to produce a 0.3% peracetic acid product. Because no stabilizer was added, the decomposition of the peracetic acid was not effectively inhibited.

[0019] Control group B Prepare the raw materials: weigh 15 parts of acetic acid, 20 parts of hydrogen peroxide (hydrogen peroxide), and 1.2 parts of a stabilizer, wherein only sodium glucoheptonic acid and phytic acid are used as stabilizers; prepare a light-shielding device, the equipment being the same as in Example 1; Preparation and premixing of stabilizer solution: Mix phosphate ester and deionized water in a ratio of 1:15 to make a dilute solution, and then inject it directly into the reactor; Add acetic acid and hydrogen peroxide: Start the reactor and the bottom feed circulation system of the diaphragm pump, add acetic acid all at once, and then add hydrogen peroxide from the hydrogen peroxide feed tank in 6 batches, with the same amount added in each batch at a rate of 1 L / min, so that all raw materials are evenly mixed to form a reaction mixture; Reaction and aging: After the raw materials are mixed, the diaphragm pump bottom feeding circulation system is kept open, the reaction temperature is controlled at 25 ° C, and after 4 hours of reaction, the reaction mixture is aged for 1.5 hours. The circulation flow rate of the diaphragm pump bottom feeding circulation system is 0.3 L / min; Filtration and product processing: After aging, the product was filtered through a multi-stage nanofiltration system to obtain a peracetic acid product with a content of 2.5%. Since only one stabilizer was used, its inhibitory effect on the decomposition of peracetic acid was not as good as the synergistic effect of multiple stabilizers in the embodiment.

[0020] Control group C Prepare the raw materials: weigh 20 parts acetic acid, 30 parts hydrogen peroxide (hydrogen peroxide), 1 part phosphate, 1 part sodium glucoheptonate, 1 part phytic acid, and 1 part quinoline; mix the phosphate, sodium glucoheptonate, phytic acid, and quinoline with deionized water at a ratio of 1:20 to form a dilute solution; the equipment is made of metal and is not light-proofed; other equipment components are the same as in Example 3; Subsequent steps: Follow the same operating procedures as in Example 3 for subsequent operations.

[0021] Control group D The traditional AB type peracetic acid product is used, where A is acetic acid and B is hydrogen peroxide. 15 parts of component A and 20 parts of component B are taken. When in use, consumers mix A and B in proportion. During storage, type B hydrogen peroxide will produce gas due to its own decomposition, which may cause the packaging container to burst. During the mixing and preparation process, the reaction is violent and can easily injure the operator. The two split packages increase the production cost of the product, and consumers have to mix the mixture in proportion when using it. The operation is relatively cumbersome and the mixing ratio cannot be intuitively grasped, which affects the disinfection effect. The final peracetic acid product has poor stability, and the stability of the peracetic acid product with a content of 0.3%-5.0% is only 3 months.

[0022] Test method: According to the stability, safety and disinfection effect of the disinfectant of the present invention, tests were carried out respectively. The specific test methods are as follows: Stability test: The peracetic acid products in the experimental and control groups were stored at 54°C for 14 days, and the peracetic acid content was determined using the iodine titration method. The principle of the iodine titration method is that peracetic acid reacts with excess potassium iodide to generate iodine, which is then titrated with a standard sodium thiosulfate solution. The peracetic acid content is calculated based on the amount of sodium thiosulfate used. The chemical reaction formula is: ; The calculation formula is: ;in, is the mass fraction of peracetic acid, is the concentration of sodium thiosulfate standard solution ( ), is the volume of sodium thiosulfate standard solution consumed (mL), is the sample mass (g), 0.038 is the mass of 1.00 mL sodium thiosulfate standard solution Equivalent mass of peracetic acid expressed in grams; content change rate calculation formula: content change rate = [(initial content - content after storage) / initial content] × 100%.

[0023] Table 2 shows the stability test indicators of disinfectants

[0024] As shown in Table 2, the peracetic acid disinfectants prepared in Examples A, B, and C of the present invention all exhibited content changes of less than 10% during an accelerated test (54°C, 14 days), demonstrating that the products maintained good stability under accelerated conditions. Comparative Example A, which did not add a stabilizer, exhibited a content change of up to 50%; Comparative Example B, which used only a portion of the stabilizer, exhibited a content change of 24%; Comparative Example C, which used metal equipment without light shielding, exhibited a content change of 30%; and Comparative Example D, a traditional AB-type product (assuming an initial content of 2.5%), exhibited a content change of 52%. These control groups exhibited significantly higher content change rates than the examples of the present invention. This demonstrates that the present invention, by formulating the four stabilizers into a dilute solution and mixing them in a proportional manner, utilizes a synergistic effect with peracetic acid to inhibit the decomposition of peracetic acid at the molecular level. Furthermore, the use of non-metallic equipment with a light shielding system effectively prevents the catalytic decomposition of hydrogen peroxide by metal ions and the decomposition reaction induced by light, significantly improving the stability of the peracetic acid product.

[0025] Safety test: The safety test includes a hydrogen peroxide decomposition risk test and an operator injury simulation test, including: Hydrogen peroxide decomposition risk test: A sample containing hydrogen peroxide (the portion involving hydrogen peroxide in each experimental group and the control group) is placed in a sealed container, stored at a certain temperature (such as 30°C) for a period of time (such as 7 days), and the pressure change in the container is measured; the greater the pressure change, the more gas is produced by the decomposition of hydrogen peroxide, and the higher the potential risk of container explosion; Operator injury simulation test: Simulate the mixing operation process, under the same conditions (such as the same mixing speed, stirring intensity, etc.), measure the heat change generated during the mixing process (the temperature rise of the mixing system can be measured by a thermometer) and the intensity of the reaction (which can be evaluated by observing phenomena such as the bubble generation rate).

[0026] Table 3 shows the safety test indicators of disinfectants

[0027] As shown in Table 3, the disinfectants prepared by Examples A, B, and C of the present invention are significantly less than those in the comparative example in terms of the change in hydrogen peroxide decomposition pressure and mixing heat. The present invention reduces the risk of container bursting caused by gas generated by hydrogen peroxide decomposition by adopting the synergistic effect of four stabilizers and the characteristics of non-metallic equipment with a light-proof system. At the same time, the heat generated during the mixing operation changes less and the reaction intensity is low, effectively avoiding harm to the operator. In contrast, Comparative Example A does not add stabilizers, and the change in hydrogen peroxide decomposition pressure and mixing heat are both large; Comparative Example B uses only part of the stabilizer, and the effect is not as good as the embodiment of the present invention; Comparative Example C has relatively high hydrogen peroxide decomposition and reaction intensity due to equipment problems; Comparative Example D has the largest change in hydrogen peroxide decomposition pressure and mixing heat, posing a major safety hazard. It can be seen that compared with traditional peracetic acid products, the present invention solves the safety hazards existing in storage and mixing operations, improves the safety of the product during production or use, and thus improves the reliability of the actual production and use of peracetic acid disinfectants.

[0028] Disinfection effectiveness test: Select a certain number of common bacteria (such as Escherichia coli and Staphylococcus aureus), viruses (such as bacteriophages), and fungi (such as Candida albicans) as test subjects; dilute the peracetic acid product in different test groups and control groups to a certain concentration (determined according to the actual usage concentration range of the product), and react with the microorganisms for a certain time (such as 10 minutes, 30 minutes); then, use the plate count method or other appropriate methods to determine the number of surviving microorganisms and calculate the sterilization rate; the sterilization rate calculation formula is: ;in, is the number of microorganisms not treated with disinfectant, It is the number of microorganisms after treatment with disinfectant.

[0029] Table 4 shows the disinfection effect test indicators of disinfectants

[0030] As shown in Table 4, the peracetic acid disinfectants prepared by Examples A, B, and C of the present invention are significantly better than those of the comparative examples in terms of killing Escherichia coli, Staphylococcus aureus, bacteriophages, and Candida albicans. The present invention improves product stability and safety while not affecting its disinfection effect by preparing four stabilizers into a dilute solution and mixing them in proportion, and adopting non-metallic equipment with a light-proof system. It can still achieve a high sterilization rate and has excellent killing ability for common bacteria, viruses, and fungi. Comparative Example A does not add stabilizers, and Comparative Example D has poor stability as a traditional AB type product, and the disinfection effect is not ideal. Comparative Example B only uses part of the stabilizer, and Comparative Example C affects product stability due to equipment problems, and their disinfection effects are not as good as those of the embodiments of the present invention. This fully demonstrates that the present invention effectively improves the disinfection performance of peracetic acid disinfectants while ensuring product stability and safety.

[0031] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A disinfectant production process utilizing synergistic effects to improve stability, characterized in that: The following steps are involved: S1. Prepare raw materials: acetic acid, hydrogen peroxide, and four stabilizers. At the same time, prepare equipment for producing disinfectants, wherein: the equipment includes at least a hydrogen peroxide feed tank, an acetic acid feed tank, a powder premixing tank, a reactor, and a multi-stage nanofiltration system; the top of the powder premixing tank is provided with a high-pressure nitrogen supply device; the interior of the reactor is equipped with a diaphragm pump bottom feed circulation system; S2. Preparation and premixing of stabilizer solutions: The four stabilizers were mixed with deionized water to form dilute solutions. The dilute solutions of the four stabilizers were then pumped into a powder premixing tank at a ratio of 1:1:1:

1. The solid high-pressure nitrogen feeding system was turned on to disperse and mix the stabilizer solutions to form a uniform stabilizer solution, which was then transported to the reactor through a pipeline. S3, adding acetic acid and hydrogen peroxide: starting the reactor, using a diaphragm pump bottom feed circulation system for mixing, while adding acetic acid from the acetic acid feed tank to the reactor to mix the acetic acid with the stabilizer solution, and then adding hydrogen peroxide from the hydrogen peroxide feed tank to the reactor to form a reaction mixture; S4, reaction and aging: continuously opening the diaphragm pump bottom feed circulation system of the reactor to react, then aging the reaction mixture in the reactor, while adjusting the circulation flow rate of the diaphragm pump bottom feed circulation system; S5. Filtration and product processing: Start the multi-stage nanofiltration system and transport the reaction mixture to the multi-stage nanofiltration system through a pipeline to obtain the finished peracetic acid disinfectant.

2. The disinfectant production process for improving stability by utilizing synergistic effect according to claim 1, characterized in that: In the S1, the amount of acetic acid is 10-20 parts; the amount of hydrogen peroxide is 10-30 parts; and the amount of the four stabilizers is 0.4-2 parts.

3. The disinfectant production process for improving stability by utilizing synergistic effect according to claim 1, characterized in that: In the S1, the four stabilizers are phosphate, sodium glucoheptonic acid, phytic acid and quinoline.

4. The disinfectant production process for improving stability by utilizing synergistic effect according to claim 1, characterized in that: In the above-mentioned S1, the equipment is made of non-metallic material and has a light-shielding system.

5. The disinfectant production process for improving stability by utilizing synergistic effect according to claim 1, characterized in that: In S1, the hydrogen peroxide feed tank and the acetic acid feed tank are both PE horizontal tanks, and the tank bodies and pipelines are protected from light.

6. The disinfectant production process for improving stability by utilizing synergistic effect according to claim 1, characterized in that: In the S2, the four stabilizers are mixed with deionized water in a ratio of 1:10-20.

7. The disinfectant production process for improving stability by utilizing synergistic effect according to claim 1, characterized in that: In S3, the hydrogen peroxide is added in 5 to 8 batches, with the same amount added in each batch at a rate of 0.5 L / min to 2 L / min.

8. The disinfectant production process for improving stability by utilizing synergistic effect according to claim 1, characterized in that: In the above S4, the reaction temperature of the diaphragm pump bottom feeding circulation system is 20° C.-30° C., and the reaction time is 3 h-5 h.

9. The disinfectant production process for improving stability by utilizing synergistic effect according to claim 1, characterized in that: In the step S4, the reaction mixture is aged in the reactor for 1 h to 2 h.

10. The disinfectant production process for improving stability by utilizing synergistic effect according to claim 1, characterized in that: In S4, the circulation flow rate of the diaphragm pump bottom feeding circulation system is 0.2L / min-0.5L / min.

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