Long-acting stable moisture-proof potassium peroxymonosulfate composite disinfection powder and preparation method thereof

Abstract

The invention provides long-acting stable moisture-proof potassium peroxymonosulfate composite disinfection powder which comprises the following components in percentage by weight: 20-55% of potassium peroxymonosulfate composite salt, 3-12% of sulfamic acid, 1-5% of sodium chloride, 3-15% of a surfactant, 3-15% of a multi-stage pH buffer agent, 0.5-2.5% of a composite dehydrating agent, 0.5-2.5% of a nano modified deodorant, 0.5-3% of polyethylene glycol (PEG), 5-15% of sodium hexametaphosphate and 0.1-1% of amaranth red pigment. And a small amount of anhydrous sodium sulfate; the specific preparation method for generating the composite disinfection powder comprises the following steps: respectively mixing the raw materials and auxiliary materials in the group A and the group B, further mixing, heating and uniformly mixing the components in the group B, so that the polyethylene glycol is gradually molten in a solid state into a liquid state to coat the auxiliary materials in the group B, and cooling and uniformly mixing all the components before a final product is generated. The invention has the advantages of moistureproof, long-acting, stable, friendly use process and no irritant odor.

Description

Technical Field

[0001] The present invention relates to the technical field of disinfectants, and in particular to a long-acting, stable, moisture-proof potassium peroxymonosulfate composite disinfectant powder and a preparation method thereof. Background Art

[0002] With the development of society and the increase in human population density, the threat of infectious bacteria is becoming increasingly serious. In recent years, potassium peroxymonosulfate complex salts, as a new type of active oxygen disinfectant, have garnered attention for their high efficacy, broad spectrum, rapidity, durability, and safety. When dissolved in water, potassium peroxymonosulfate complex salts release a variety of active components with high redox potentials, including nascent oxygen [O], sulfate radicals, hydroxyl radicals, and hydrogen peroxide radicals, through a chain reaction. These compounds interfere with pathogen DNA and RNA synthesis, coagulate and denature pathogen proteins, and, in turn, interfere with the activity of pathogen enzyme systems, affecting their metabolism and increasing cell membrane permeability, leading to enzyme and nutrient loss, pathogen dissolution and rupture, and ultimately pathogen killing. Potassium peroxymonosulfate complex disinfectant is the first and only veterinary disinfectant approved and registered by the US Environmental Protection Agency (EPA) for the prevention of foot-and-mouth disease. Furthermore, the US Department of Agriculture (USDA) has adopted it as a common disinfectant for airport entry and exit disinfection to control the invasion of foreign pathogens. Potassium permonosulfate compound disinfectant is effective against 61 viruses, 33 bacteria, and 6 fungi. Its aqueous solution has extremely low toxicity, is harmless to humans and animals, and does not cause residual environmental problems. Compared with other traditional disinfectants such as peroxides, chlorine-containing disinfectants, aldehydes, alcohols, iodine-containing disinfectants, phenols, ethylene oxides, biguanides, and quaternary ammonium salts, potassium permonosulfate compound disinfectant has the advantages of high efficiency, broad spectrum, rapid and long-lasting effect, low cost, safety, and environmental protection.

[0003] Currently, many potassium peroxymonosulfate compound disinfectant products have been launched both domestically and internationally, and there has been much research on the formulation of potassium peroxymonosulfate compound disinfectants. The preparation methods of potassium peroxymonosulfate compound disinfectants mentioned in numerous patents have failed to address the problems of potassium peroxymonosulfate compound disinfectant products causing caking, bag bulging, and a strong irritating odor due to moisture in the preparation process of the raw and auxiliary materials or in the use of the packaging bag after it is opened due to moisture absorption. Some patented formulas add flavor masking agents such as lemon essence and limonene to reduce the irritation of the user's respiratory mucosa caused by the irritating odor. However, this approach increases manufacturing costs and, because the introduced flavor masking agents are organic, they adversely affect the stability of the potassium peroxymonosulfate compound salt, which is an inorganic peroxide. Furthermore, the addition of flavor masking agents may affect the degradation of the disinfectant in the environment, resulting in an increasing number of chemical substances remaining in the environment, becoming a new source of pollution.

[0004] Therefore, based on the drawbacks of the above conventional potassium peroxymonosulfate compound disinfectant products, developing a long-lasting, stable, user-friendly, odorless and long-lasting moisture-proof potassium peroxymonosulfate compound disinfectant powder is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Invention

[0005] The present invention aims to provide a moisture-proof, long-lasting, stable, use-friendly, and odor-free long-lasting, stable, moisture-proof potassium peroxymonosulfate composite disinfectant powder and a preparation method thereof.

[0006] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0007] The invention discloses a long-acting, stable, moisture-proof potassium peroxymonosulfate composite disinfectant powder, comprising the following components in weight percentage: 20-55% of potassium peroxymonosulfate composite salt, 3-12% of aminosulfonic acid, 1-5% of sodium chloride, 3-15% of a surfactant, 3-15% of a multi-stage pH buffer, 0.5-2.5% of a composite dehydrating agent, 0.5-2.5% of a nano-modified deodorant, 0.5-3% of polyethylene glycol (PEG), 5-15% of sodium hexametaphosphate, 0.1-1% of amaranth pigment, and a small amount of anhydrous sodium sulfate.

[0008] Furthermore, the particle size D50 of the sodium chloride is 20 to 250 μm, and the span coefficient (D90-D10) / D50≤1.2.

[0009] Furthermore, the surfactant includes one or a mixture of more than one of sodium methane sulfonate, sodium dodecylbenzene sulfonate, and sodium lauryl sulfate in any mass ratio.

[0010] Furthermore, the multi-stage pH buffer comprises a mixture of two or more of DL-malic acid, anhydrous citric acid, and anhydrous sodium citrate in any mass ratio.

[0011] Furthermore, the composite dehydrating agent is a mixture of sodium polyacrylate and carboxymethyl chitosan in any mass ratio.

[0012] Furthermore, the nano-modified deodorant is a mesoporous silica gel with a microporous activated carbon layer coated on the surface.

[0013] Furthermore, in the nano-modified deodorant, the mass of the microporous activated carbon with a diameter of 0.5 to 2 nm accounts for 50 to 75%, and the mass of the mesoporous silica gel with a diameter of 2 to 5 nm accounts for 25 to 50%.

[0014] Furthermore, the molecular weight of the polyethylene glycol (PEG) is 6000.

[0015] The functions of the various components in the composite disinfectant powder product of the present invention are as follows.

[0016] The potassium peroxymonosulfate complex described in the components acts as an oxidant, aminosulfonic acid acts as an activator, and sodium chloride acts as a synergist. The three work together to produce a chain reaction. In the chain reaction, sodium chloride is oxidized by the potassium peroxymonosulfate tri-salt complex. The generated chlorine gas interacts with aminosulfonic acid to form an intermediate complex, which then decomposes to form hypochlorous acid. This reaction cycle continues, continuously producing hydrogen peroxide, hypochlorous acid, free hydroxyl groups, and nascent oxygen, which further act on microorganisms, inhibiting the production of enzymes within microbial cells and preventing protein synthesis, thereby achieving a bactericidal effect. In addition, the sodium chloride particle size distribution D50 must be controlled within 50-180μm, and the span coefficient ((D90-D10) / D50) must be ≤1.2 to ensure the sustained release of ions. At the same time, powdered sodium chloride with a uniform particle size helps improve the uniformity of the overall color of the disinfectant powder.

[0017] The surfactants described in the ingredients enhance the wettability of the disinfectant on surfaces, especially in hard-to-clean areas, ensuring full coverage of the disinfection interface. Furthermore, the surfactant's penetrating properties allow the disinfectant to more quickly disrupt pathogen biofilms and penetrate deep into them, increasing contact between the disinfectant and pathogens, thereby enhancing the disinfection effect.

[0018] The multi-stage pH buffer described in the components contains organic acids and salts with different dissociation constants, which can resist large changes in pH value and is conducive to the maintenance of active oxygen under acidic conditions, so as to maintain the effectiveness of the disinfectant powder.

[0019] The composite dehydrating agents sodium polyacrylate and carboxymethyl chitosan described in the components can form a composite hygroscopic network through hydrogen bond cross-linking, absorb moisture from raw materials and the air, effectively reduce the adsorption and adhesion between water-absorbing particles between products, prevent the aggregation of particles or powdered materials, and keep them loose or free-flowing.

[0020] The nano-modified deodorant described in the ingredients is a mesoporous silica gel coated with activated carbon. It possesses a highly developed microporous structure, which provides numerous adsorption sites, resulting in a strong adsorption capacity. These pores can capture and absorb chlorine molecules generated by moisture. When the disinfectant powder is dissolved in water, the adsorbed chlorine is converted into hypochlorous acid, which does not affect the product's normal sterilization and disinfection effects.

[0021] The PEG6000 component has a phase transition temperature of approximately 60°C. During the preparation process, PEG6000 is mixed with sodium chloride, surfactants, and other components that react readily with potassium permonosulfate. The mixture is then melted at high temperature to enhance the coating properties of the PEG6000 and other mixed components. The mixture is then cooled, allowing the PEG6000 to solidify on the surfaces of the sodium chloride and surfactant particles, forming a shielding layer. This prevents direct contact between the potassium permonosulfate and components such as sodium chloride during storage, reducing the generation of chlorine gas. Furthermore, during use, the disinfectant powder provides a sustained release of chlorine, enhancing the product's long-term effectiveness.

[0022] The sodium hexametaphosphate described in the components is used as a chelating agent to chelate metal ions in the solution, preventing the metal ions from chemically reacting to form precipitates, effectively inhibiting the catalytic decomposition of strong oxidizing components by metal ions, and extending their service life.

[0023] The amaranth red described in the components is used as a colorant, and its main function is to indicate the effective concentration of disinfection through color changes. When the color of the colored indicator in the aqueous solution changes from colored to colorless, it can be visually detected whether the concentration of the disinfectant meets the disinfection requirements, making the detection of whether the disinfectant content meets the requirements convenient and direct, and also helps to improve the visual effect of the product.

[0024] The anhydrous sodium sulfate mentioned in the ingredients acts as a filler. Due to its high heat capacity, it can absorb and release large amounts of heat, thereby stabilizing the temperature. Furthermore, anhydrous sodium sulfate can absorb a certain amount of water, maintaining the fluidity of the product, helping to improve the stability of the potassium peroxymonosulfate compound disinfectant and reduce sensitivity to humidity and temperature changes, thereby extending the product's shelf life.

[0025] A method for preparing a long-lasting, stable, moisture-proof potassium peroxymonosulfate composite disinfectant powder comprises the following steps:

[0026] S1) Passing all raw materials through a 20-mesh standard sieve for later use, and dividing the components to be added into two groups, A and B: Group A contains potassium peroxymonosulfate complex salt, aminosulfonic acid, multi-stage pH buffer, composite dehydrating agent, nano-modified deodorant, anhydrous sodium sulfate, and amaranth pigment; Group B contains sodium chloride, surfactant, sodium hexametaphosphate, and polyethylene glycol;

[0027] S2) Add the components of group A to a double cone mixer according to the set amount and stir for 10 to 30 minutes to mix evenly;

[0028] S3) adding the components of Group B according to the set amount to the double cone mixer 2, stirring for 5 to 15 minutes, and after the components of Group B are evenly mixed, passing hot water into the jacket of the double cone mixer 2 to heat the materials in the mixer 2, and controlling the material temperature at 60 to 80° C. and continuing stirring for 10 to 30 minutes; at this temperature, the polyethylene glycol solid powder will gradually melt into a liquid state, thereby coating the surface of the excipient particles of Group B;

[0029] S4) placing the uniformly mixed materials in mixer 2 into mixer 3, and passing cooling circulating water into the jacket of mixer 3 to cool the materials therein; after cooling, the polyethylene glycol coated on the surface of the Group B excipients solidifies to form a shielding layer, which can prevent direct contact between the potassium peroxymonosulfate and the Group B excipients during storage;

[0030] S5) After the temperature of the material in mixer 3 drops below 40° C., the material in mixer 1 is placed in mixer 3 and stirred for 10 to 30 minutes to uniformly mix the auxiliary material components of groups A and B; then, cooling circulating water is continuously introduced into the jacket of mixer 3 to continuously cool the stirred material in mixer 3, thereby lowering the temperature of the packaged product and reducing the possibility of agglomeration caused by the temperature difference between hot and cold temperatures;

[0031] S6) The material stirred uniformly in the mixer 3 and having a temperature below 35° C. is packaged to obtain the potassium peroxymonosulfate composite disinfectant powder product.

[0032] Furthermore, the temperature of the circulating cooling water introduced into the triple jacket of the mixer is 5 to 35°C.

[0033] Compared with the prior art, the present invention has the following advantages:

[0034] The invention discloses a long-acting, stable, moisture-proof potassium peroxymonosulfate composite disinfectant powder and a preparation method thereof, which solve the shortcomings of the potassium peroxymonosulfate composite disinfectant powder, such as easy moisture absorption and agglomeration, easy decomposition and bag swelling, strong irritating odor after bag opening, short shelf life, and unstable active ingredients. By constructing a multi-stage pH buffer system, the stability of active oxygen in an acidic environment is improved. The moisture resistance and stability of the product are improved through the synergistic effect of a composite dehydrating agent. A nano-modified deodorant is used to adsorb chlorine during use, thereby making the use process friendly and free of irritating odor. The phase change characteristics of polyethylene glycol are utilized to coat components such as sodium chloride and a surfactant, thereby reducing direct contact with the potassium peroxymonosulfate composite salt and increasing the long-acting effect of the product.

[0035] The long-acting, stable, moisture-proof potassium peroxymonosulfate composite disinfectant powder of the present invention can be used in scenes susceptible to moisture, such as disinfection of high-humidity aquaculture water bodies and sterilization of livestock farm equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1It is a schematic flow chart of the preparation method of the present invention.

[0037] Reference numerals: 1, double cone mixer one; 2, double cone mixer two; 3, mixer three. DETAILED DESCRIPTION

[0038] The embodiments of the present invention are described in further detail below with reference to the accompanying drawings.

[0039] Use Figure 1 The device shown in the figure is used to prepare potassium peroxymonosulfate composite disinfectant powder according to a specific process flow. The specific steps are as follows:

[0040] Step S1) The raw materials and auxiliary materials are passed through a 20-mesh standard sieve and set aside. The components to be added are divided into two groups, A and B. Group A contains potassium peroxymonosulfate complex salt, aminosulfonic acid, a multi-stage pH buffer, a composite dehydrating agent, a nano-modified deodorant, anhydrous sodium sulfate, and amaranth pigment. Group B contains sodium chloride, a surfactant, sodium hexametaphosphate, and polyethylene glycol (PEG) 6000.

[0041] Step S2) Add the components of Group A into the double cone mixer according to the set amount, stir for 10 to 30 minutes, and mix evenly;

[0042] Step S3) Add the components of Group B to the double cone mixer 2 according to the set amount, stir for 5 to 15 minutes, then pass hot water into the jacket of the double cone mixer 2, control the temperature of the material in the double cone mixer 2 at 60 to 80° C., and continue stirring for 10 to 30 minutes;

[0043] Step S4) putting the materials mixed evenly in the double cone mixer 2 into the mixer 3, and passing cooling circulating water into the jacket of the mixer 3 to cool the materials therein;

[0044] Step S5) When the temperature of the material in the mixer 3 drops below 40°C, the material in the double cone mixer 1 is placed in the mixer 3 and stirred for 10 to 30 minutes; and cooling circulating water is continuously introduced into the jacket of the mixer 3 to continuously cool the stirred material in the mixer 3;

[0045] Step S6) The material stirred evenly in the mixer 3 and having a temperature below 35° C. is packaged to obtain the potassium peroxymonosulfate composite disinfectant powder product.

[0046] The present invention provides the component formulas of Examples 1 to 5, and adds the commercially available formulas of Comparative Examples 1 and 2 for further comparison, as shown in Table 1.

[0047] Table 1 Component formula of Examples 1 to 5 and Comparative Examples 1 and 2

[0048]

[0049] In Example 1, the surfactant selected was sodium dodecylbenzenesulfonate, the multi-stage pH buffer was a mixture of sodium citrate and anhydrous citric acid in a mass ratio of 5:4, and the composite dehydrating agent was a mixture of sodium polyacrylate and carboxymethyl chitosan in a mass ratio of 4:1.

[0050] In Example 2, the surfactant selected was sodium fatty acid methanesulfonate, the multi-stage pH buffer was a mixture of anhydrous sodium citrate, DL-malic acid, and sodium citrate in a mass ratio of 5:3:2, and the composite dehydrating agent was a mixture of sodium polyacrylate and carboxymethyl chitosan in a mass ratio of 1:1.

[0051] In Example 3, the surfactant selected was sodium dodecylbenzenesulfonate, the multi-stage pH buffer was a mixture of anhydrous sodium citrate, DL-malic acid, and sodium citrate in a mass ratio of 5:3:2, and the composite dehydrating agent was a mixture of sodium polyacrylate and carboxymethyl chitosan in a mass ratio of 4:1.

[0052] In Example 4, the surfactant selected was sodium dodecylbenzenesulfonate, the multi-stage pH buffer was a mixture of anhydrous sodium citrate, DL-malic acid, and sodium citrate in a mass ratio of 5:3:2, and the composite dehydrating agent was a mixture of sodium polyacrylate and carboxymethyl chitosan in a mass ratio of 1:1.

[0053] In Example 5, the surfactant selected was sodium dodecylbenzenesulfonate, the multi-stage pH buffer was a mixture of anhydrous sodium citrate, DL-malic acid, and sodium citrate in a mass ratio of 5:4:3, and the composite dehydrating agent was a mixture of sodium polyacrylate and carboxymethyl chitosan in a mass ratio of 2:3.

[0054] In Comparative Example 1, the surfactant selected was sodium dodecylbenzenesulfonate, and the pH buffer was anhydrous sodium citrate.

[0055] In Comparative Example 2, the surfactant selected was sodium dodecylbenzenesulfonate and the pH buffer was DL-malic acid.

[0056] Potassium peroxymonosulfate composite disinfectant powders with different properties were prepared by using different components and ratios in Examples 1 to 5 and Comparative Examples 1 and 2, and then the following performance tests were performed on them, including moisture resistance test, active oxygen content test, and long-term stability test.

[0057] 1. Moisture resistance performance test

[0058] 500 g of each sample from Examples 1 to 5 and Comparative Examples 1 and 2 was placed in an environment of 45° C. and 80% relative humidity for 2 hours. The moisture absorption rate was measured by weighing the samples before and after the test. The specific formula is as follows:

[0059]

[0060] Wherein, q is the moisture absorption rate; m1 is the mass of the sample after the moisture absorption test, in g; m2 is the mass of the sample before the moisture absorption test, in g.

[0061] After the moisture absorption test, the sample was sealed in an aluminum foil bag and placed in a drying oven at 60°C. After 5 hours, it was taken out and tested for its properties (caking, bag bulging), odor, and active oxygen loss rate. The specific formula for active oxygen loss rate is as follows:

[0062]

[0063] Where S is the active oxygen loss rate; [O]1 is the active oxygen content of the sample before the test; [O]2 is the active oxygen content of the sample before the test.

[0064] 2. Active oxygen content test

[0065] Weigh 0.2g-0.3g of sample into a conical flask, accurate to 0.0002g, rinse the flask wall with a small amount of water, add about 20mL of sulfuric acid solution and 3 drops of manganese sulfate solution, and titrate with potassium permanganate standard titrant until the solution turns light pink. Record the volume value V1 of potassium permanganate standard titrant consumed.

[0066] Weigh 0.2g~0.3g sample into iodine volumetric flask, accurate to 0.0002g, rinse the flask wall with a small amount of water, add about 20mL sulfuric acid solution, 3 drops of ammonium molybdate solution, 10mL potassium iodide solution, cover the bottle tightly with water, shake gently, place in a dark place for 5~10min, titrate with sodium thiosulfate standard titrant, add 1mL starch indicator solution when approaching the end point (the solution is light yellow), continue titrating until the blue color disappears, and keep it unchanged for 30s as the end point, record the volume value V2 of sodium thiosulfate standard titrant consumed.

[0067] The mass fraction W of active oxygen (O) is calculated according to the following formula:

[0068] W=(C2V2-C1V1)×8.00×10 -3 / m;

[0069] Wherein: C1 is the concentration of potassium permanganate standard titration solution, in mol / L; C2 is the concentration of sodium thiosulfate standard titration solution, in mol / L; V1 is the volume of potassium permanganate standard titration solution consumed in the titration of hydrogen peroxide, in milliliters (mL); V2 is the volume of sodium thiosulfate standard titration solution consumed in the titration of active oxygen, in milliliters (mL); m is the mass of the sample weighed during the titration of active oxygen, in grams (g); 8.00 is the molar mass of active oxygen (1 / 2O), in grams per mole (g / mol).

[0070] The arithmetic mean of the two parallel determination results was taken as the determination result. The absolute difference between the two parallel determination results was: no more than 0.1% for hydrogen peroxide and no more than 0.3% for active oxygen.

[0071] The test results of moisture resistance test and active oxygen content test are shown in Table 2.

[0072] Table 2 Moisture resistance and active oxygen content test results of Examples 1 to 5 and Comparative Examples 1 and 2

[0073]

[0074]

[0075] As can be seen in Table 2, the disinfectant powder prepared in the present invention exhibits strong moisture resistance and virtually no moisture absorption in high-humidity environments. After accelerated testing at 60°C, the sample remained in a loose powdery state, while the comparative example sample had become lumpy and clumpy. The samples in the examples exhibited no odor or bag bulging, and exhibited a lower overall active oxygen loss rate, demonstrating that the disinfectant powder prepared in the present invention possesses enhanced stability and prolonged effectiveness.

[0076] 3. Long-term stability test

[0077] Using the accelerated testing method outlined in the Disinfection Technical Specifications, packaged disinfectant is placed in a constant temperature incubator at 37°C and relative humidity >75% for three months. The content of the disinfectant's active bactericidal ingredients is measured before and after placement. The active bactericidal ingredients in the disinfectant are characterized by their active oxygen content. Three batches of samples are tested each time, with each batch tested twice, and the average value is used.

[0078] The test results are shown in Table 3.

[0079] Table 3 Long-term stability test results of Examples 1 to 5 and Comparative Examples 1 and 2

[0080]

[0081] As can be seen from Table 3, after three months of long-term stability testing, the samples of the present invention maintained good fluidity and had no irritating odor after opening the bag; in contrast, the comparative samples all had a lumpy appearance and a strong pungent odor upon opening the bag. The active oxygen loss rate of the sample of the embodiment was also significantly lower than that of the comparative sample, indicating that the potassium peroxymonosulfate composite disinfectant powder product prepared using the present invention has strong moisture resistance, stability, and time-effectiveness.

[0082] The above is only a preferred embodiment of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the concept of the present invention. These improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A long-lasting, stable, moisture-proof potassium peroxymonosulfate composite disinfectant powder, characterized in that: The invention comprises the following components in weight percentage: 20-55% of potassium peroxymonosulfate complex salt, 3-12% of aminosulfonic acid, 1-5% of sodium chloride, 3-15% of surfactant, 3-15% of multi-stage pH buffer, 0.5-2.5% of composite dehydrating agent, 0.5-2.5% of nano-modified deodorant, 0.5-3% of polyethylene glycol (PEG), 5-15% of sodium hexametaphosphate, 0.1-1% of amaranth pigment, and a small amount of anhydrous sodium sulfate.

2. A long-lasting, stable, moisture-proof potassium peroxymonosulfate composite disinfectant powder according to claim 1, characterized in that: The sodium chloride particle size D50 is 20-250 μm, and the span coefficient (D90-D10) / D50≤1.

2.

3. A long-acting, stable, moisture-proof potassium peroxymonosulfate composite disinfectant powder according to claim 1, characterized in that: The surfactant includes one or a mixture of more than one of sodium fatty acid methane sulfonate, sodium dodecylbenzene sulfonate and sodium lauryl sulfate in any mass ratio.

4. The long-acting, stable, moisture-proof potassium peroxymonosulfate composite disinfectant powder according to claim 1, characterized in that: The multi-stage pH buffer comprises a mixture of two or more of DL-malic acid, anhydrous citric acid, and anhydrous sodium citrate in any mass ratio.

5. The long-acting, stable, moisture-proof potassium peroxymonosulfate composite disinfectant powder according to claim 1, characterized in that: The composite dehydrating agent is a mixture of sodium polyacrylate and carboxymethyl chitosan in any mass ratio.

6. The long-acting, stable, moisture-proof potassium peroxymonosulfate composite disinfectant powder according to claim 1, characterized in that: The nano-modified deodorant is a mesoporous silica gel with a microporous activated carbon layer coated on the surface.

7. The long-acting, stable, moisture-proof potassium peroxymonosulfate composite disinfectant powder according to claim 6, characterized in that: In the nano-modified deodorant, the mass of the microporous activated carbon with a diameter of 0.5 to 2 nm accounts for 50 to 75%, and the mass of the mesoporous silica gel with a diameter of 2 to 5 nm accounts for 25 to 50%.

8. The long-acting, stable, moisture-proof potassium peroxymonosulfate composite disinfectant powder according to claim 1, characterized in that: The molecular weight of the polyethylene glycol (PEG) is 6000.

9. A method for preparing a long-lasting, stable, moisture-proof potassium peroxymonosulfate composite disinfectant powder, characterized in that The steps include: S1) screening all raw materials and dividing them into two groups, A and B: Group A contains potassium peroxymonosulfate, aminosulfonic acid, a multi-stage pH buffer, a composite dehydrating agent, a nano-modified deodorant, anhydrous sodium sulfate, and amaranth pigment; Group B contains sodium chloride, a surfactant, sodium hexametaphosphate, and polyethylene glycol; S2) Add the components of group A to a double cone mixer according to the set amount and stir for 10 to 30 minutes to mix evenly; S3) adding the components of Group B according to the set amount into the double cone mixer 2, stirring for 5 to 15 minutes, and then passing hot water into the jacket of the double cone mixer 2 to heat the materials in the mixer 2, and controlling the material temperature at 60 to 80° C. and continuing stirring for 10 to 30 minutes; S4) placing the mixed materials in the second mixer into the third mixer, and introducing cooling circulating water into the jacket of the third mixer to cool the materials therein; S5) After the temperature of the material in mixer 3 drops below 40° C., the material in mixer 1 is placed in mixer 3 and stirred for 10 to 30 minutes to uniformly mix the auxiliary material components of groups A and B; then, cooling circulating water is continuously introduced into the jacket of mixer 3 to continuously cool the stirred material in mixer 3, thereby lowering the temperature of the packaged product and reducing the possibility of agglomeration caused by the temperature difference between hot and cold temperatures; S6) packaging the material uniformly stirred in the mixer 3 and having a temperature below 35° C. to obtain the potassium peroxymonosulfate composite disinfectant powder product.

10. The method for preparing a long-lasting, stable, moisture-proof potassium peroxymonosulfate composite disinfectant powder according to claim 9, characterized in that: The temperature of the circulating cooling water introduced into the triple jacket of the mixer is between 5 and 35°C.

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