CN112956490B - Preparation method of solid slow-release disinfectant for removing formaldehyde and disinfecting and deodorizing air - Google Patents
Preparation method of solid slow-release disinfectant for removing formaldehyde and disinfecting and deodorizing air Download PDFInfo
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/18—Vapour or smoke emitting compositions with delayed or sustained release
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/72—Organic compounds not provided for in groups B01D53/48 - B01D53/70, e.g. hydrocarbons
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/76—Gas phase processes, e.g. by using aerosols
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- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
Abstract
The invention relates to the technical field of disinfectants, in particular to a preparation method of a solid slow-release disinfectant for removing formaldehyde and air sterilization and odor, which comprises the following steps of mixing a gelling agent, water-soluble salt and solid particles and uniformly stirring to obtain a first mixture; secondly, laying the first mixture on the bottom and the peripheral side wall of the mold, wherein water filtering holes are formed in the bottom and the side wall of the mold; step three, injecting water into the first mixture paved in the mold to completely wet the first mixture in the mold, and then drying to obtain a shell with an opening at one end and a plurality of micropores on the periphery; step four, mixing and uniformly stirring sodium chlorite powder, hydrochloric acid powder and a water absorbent to obtain disinfection powder; and step five, paving the sponge in the shell, then putting the disinfection powder into the middle of the sponge, and then covering the disinfection powder with a waterproof membrane. The disinfectant prepared by the method can be applied to various environments for removing formaldehyde and disinfecting, and has a good disinfecting effect.
Description
Technical Field
The invention relates to the technical field of disinfectants, in particular to a preparation method of a solid slow-release disinfectant for removing formaldehyde and air disinfection and odor.
Background
Chlorine dioxide has very strong advantages in the fields of disinfection and aldehyde removal and odor removal, and the sterilization and disinfection mechanism of chlorine dioxide is different from the chlorination disinfection effect generated by chlorine-containing disinfectants such as bleaching powder and the like, and is also different from compounds such as aldehydes, phenols and the like, and the chlorine dioxide loses activity by denaturing protein of microorganisms. A large number of research results prove that chlorine dioxide does not influence the cell structure of higher vertebrates, carcinogenic substances are not generated in the process of generating disinfection effect, and microorganisms cannot generate drug resistance to chlorine dioxide. Numerous studies have concluded that chlorine dioxide is effective without residual and harmful substances. However, chlorine dioxide is very active in chemical property, explosion risk exists when the concentration is higher than 10%, the chlorine dioxide cannot be stored in a gas form, the aqueous solution is relatively stable, the chlorine dioxide can be stored for a long time if the chlorine dioxide is stored in a shady and cool sealed dark place, but is extremely easy to decompose if the chlorine dioxide is irradiated under high temperature, and the chlorine dioxide is generally prepared on site and cannot be stored and transported, so that the application range of the chlorine dioxide is limited.
In addition, the chlorine dioxide products on the market are mainly tablets, powder, liquid or gel forms, the tablet powder needs to be dissolved in aqueous solution for producing chlorine dioxide when in use, and the final use state is also in liquid form. The use of aqueous solutions of chlorine dioxide or gels in liquid form has certain limitations, such as: chlorine dioxide solutions can corrode metal materials; by wiping, spraying or atomizing the aqueous solution, it is difficult to ensure that chlorine dioxide can reach all parts to be treated; most of liquid chlorine dioxide solution contains other compound impurities, and generally, the chlorine dioxide solution can only be used in the fields of industry and agriculture, thereby limiting the application range of chlorine dioxide.
Disclosure of Invention
In order to overcome the defects and shortcomings in the prior art, the invention aims to provide the preparation method of the solid slow-release disinfectant for removing formaldehyde and disinfecting and deodorizing air, which can be applied to various environments for removing formaldehyde and disinfecting, has good disinfection effect, and can slowly release chlorine dioxide gas when in use, thereby achieving the effects of long-acting disinfection, deodorization and formaldehyde removal.
The purpose of the invention is realized by the following technical scheme:
the preparation method of the solid slow-release disinfectant for removing formaldehyde and air disinfection and odor comprises the following steps:
step one, mixing and uniformly stirring a gelling agent, water-soluble salt and solid particles to obtain a first mixture;
secondly, laying the first mixture on the bottom and the peripheral side wall of the mold, wherein water filtering holes are formed in the bottom and the side wall of the mold;
step three, injecting water into the first mixture paved in the mold to completely wet the first mixture in the mold, and then drying to obtain a shell with an opening at one end and a plurality of micropores on the periphery;
step four, mixing and uniformly stirring sodium chlorite powder, hydrochloric acid powder and a water absorbent to obtain disinfection powder;
laying sponge inside the shell, then putting the disinfection powder into the middle of the sponge, and then covering a waterproof membrane on the disinfection powder;
step six, adding water into the first mixture to mix the mixture into muddy mixed mud, then laying the mixed mud on a waterproof diaphragm, and blocking the opening of the shell;
and seventhly, inserting a plurality of thin tubes into the mixed mud laid at the opening of the shell, enabling one ends of the thin tubes to penetrate through the waterproof diaphragm, drying, and pulling out the thin tubes after drying to obtain the disinfectant.
Wherein the gelling agent is at least one of silicate, aluminate and iron aluminate.
Wherein the water-soluble salt is at least one of sodium carbonate, sodium chloride and sodium sulfate.
Wherein the weight ratio of the gelling agent to the water-soluble salt is
Wherein the solid particles are at least one of silicon dioxide, aluminum oxide and calcium carbonate.
Wherein the particle size of the solid particles is 0.5-1 mm.
Wherein the weight ratio of the gelling agent, the water-soluble salt and the solid particles is 55-60: 30-35: 5-15.
Wherein the drying temperature in the third step is 70-80 ℃.
The thickness of the shell is 4-5mm, if the thickness of the shell is too thick, the water absorbent in the shell is difficult to absorb external moisture through the shell, and chlorine dioxide generated in the shell is difficult to release to the outside through the shell, so that the disinfection effect of the disinfectant disclosed by the invention is influenced.
Wherein the water absorbent is at least one of polyacrylate, starch acrylate polymer, starch-acrylonitrile graft copolymer and acrylamide-acrylonitrile-acrylic acid terpolymer. The chlorine dioxide gas generator has high water absorption, and can absorb external water into the shell to react sodium chlorite and hydrochloric acid to generate chlorine dioxide gas.
Wherein the weight ratio of the sodium chlorite powder to the hydrochloric acid powder to the water absorbent is 1:10-15: 50-60.
Wherein the diameter of the thin tube is 0.5-1.5 mm.
The invention has the beneficial effects that:
according to the invention, the shell with the micropores is prepared, the water absorbent, the sodium chlorite and the hydrochloric acid are filled in the shell, the high water absorption performance of the water absorbent absorbs external water into the shell through the micropores of the shell, so that the sodium chlorite and the hydrochloric acid in the shell react to generate chlorine dioxide gas, the generated chlorine dioxide gas is discharged to the outside through the micropores of the shell, the discharged chlorine dioxide gas can permeate to various positions of the outside and react with harmful gases such as external formaldehyde, and the aim of disinfection and odor removal is achieved.
According to the invention, water-soluble salt is added into the first mixture, then the mixture is laid on the bottom and the peripheral side walls of the shell, and then water is injected to completely wet the mixture, because of the water solubility of the water-soluble salt, when water is injected, the water-soluble salt is dissolved and discharged from the water filtering holes of the mould along with water flow, a plurality of channels are formed on the shell after the water-soluble salt is dissolved, and then a plurality of communicated micropores are formed on the prepared shell, so that the water outside the shell can enter the shell from the micropores, and the chlorine dioxide gas inside the shell can be discharged outside the shell from the micropores to react with the formaldehyde and other harmful gases outside, so that the formaldehyde and other harmful gases outside are removed, and the purposes of disinfection and deodorization are achieved.
According to the invention, the solid particles are added into the first mixture, the particle size of the solid particles is controlled, and the solid particles have a certain shape, so that a certain gap can be formed between the solid particles and the solid particles, thereby being more beneficial to the entry of external moisture into the shell and the discharge of chlorine dioxide gas generated in the shell to the outside for removing harmful gas, and being beneficial to the improvement of the disinfection effect and the disinfection efficiency of the disinfectant.
According to the invention, the sponge is laid in the shell, and then the disinfection powder is filled in the middle of the sponge to separate the shell from the disinfection powder, so that on one hand, the disinfection powder can be prevented from blocking micropores on the shell, the influence on the external moisture entering the shell and the internal chlorine dioxide gas generated can not be discharged out of the shell in time can be avoided, on the other hand, the phenomenon that the micropores on the shell are blocked due to the expansion of the volume of the water absorbent after water absorption can be avoided, and further the chlorine dioxide gas generated in the shell can not be discharged out of the outside can be avoided, on the other hand, the sponge plays a role of fixing the disinfection powder, and simultaneously, a certain expansion space can be provided for the water absorbent due to the elastic action of the sponge, and the phenomenon that the shell is broken or the shell is deformed due to the water absorption expansion of the water absorbent is avoided. In conclusion, the arrangement of the sponge is beneficial to improving the disinfection effect of the disinfectant.
According to the invention, the thin tube is inserted into the mixed mud when the opening of the shell is plugged, and penetrates through the waterproof diaphragm, and the thin tube is pulled out after the mixed mud is dried, so that the dried mixed mud and the waterproof diaphragm are provided with the through holes, and then moisture and chlorine dioxide gas can enter and exit from the through holes, thereby further improving the disinfection effect and disinfection efficiency of the disinfectant.
Detailed Description
The present invention will be further described with reference to the following examples for facilitating understanding of those skilled in the art, and the description of the embodiments is not intended to limit the present invention.
Example 1
The preparation method of the solid slow-release disinfectant for removing formaldehyde and air disinfection and odor comprises the following steps:
step one, mixing and uniformly stirring a gelling agent, water-soluble salt and solid particles to obtain a first mixture;
secondly, laying the first mixture on the bottom and the peripheral side wall of the mold, wherein water filtering holes are formed in the bottom and the side wall of the mold;
step three, injecting water into the first mixture paved in the mold to completely wet the first mixture in the mold, and then drying to obtain a shell with an opening at one end and a plurality of micropores on the periphery;
step four, mixing and uniformly stirring sodium chlorite powder, hydrochloric acid powder and a water absorbent to obtain disinfection powder;
laying sponge inside the shell, then putting the disinfection powder into the middle of the sponge, and then covering a waterproof membrane on the disinfection powder;
step six, adding water into the first mixture to mix the mixture into muddy mixed mud, then laying the mixed mud on a waterproof diaphragm, and blocking the opening of the shell;
and seventhly, inserting a plurality of thin tubes into the mixed mud laid at the opening of the shell, enabling one ends of the thin tubes to penetrate through the waterproof diaphragm, drying, and pulling out the thin tubes after drying to obtain the disinfectant.
Wherein the gelling agent is sodium silicate, the water-soluble salt is sodium carbonate, and the solid particles are silicon dioxide.
Wherein the solid particles have a particle size of 0.75 mm.
Wherein the weight ratio of the gelling agent, the water-soluble salt and the solid particles is 57.5: 32.5: 10.
wherein the drying temperature in the third step is 75 ℃.
Wherein the thickness of the shell is 4.5 mm.
Wherein the water absorbent is sodium polyacrylate.
Wherein the weight ratio of the sodium chlorite powder to the hydrochloric acid powder to the water absorbent is 1:12.5: 55.
Wherein, the diameter of tubule is 1 mm.
Example 2
The preparation method of the solid slow-release disinfectant for removing formaldehyde and air disinfection and odor comprises the following steps:
step one, mixing and uniformly stirring a gelling agent, water-soluble salt and solid particles to obtain a first mixture;
secondly, laying the first mixture on the bottom and the peripheral side wall of the mold, wherein water filtering holes are formed in the bottom and the side wall of the mold;
step three, injecting water into the first mixture paved in the mold to completely wet the first mixture in the mold, and then drying to obtain a shell with an opening at one end and a plurality of micropores on the periphery;
step four, mixing and uniformly stirring sodium chlorite powder, hydrochloric acid powder and a water absorbent to obtain disinfection powder;
laying sponge inside the shell, then putting the disinfection powder into the middle of the sponge, and then covering a waterproof membrane on the disinfection powder;
step six, adding water into the first mixture to mix the mixture into muddy mixed mud, then laying the mixed mud on a waterproof diaphragm, and blocking the opening of the shell;
and seventhly, inserting a plurality of thin tubes into the mixed mud laid at the opening of the shell, enabling one ends of the thin tubes to penetrate through the waterproof diaphragm, drying, and pulling out the thin tubes after drying to obtain the disinfectant.
Wherein the gelling agent is sodium aluminate, the water-soluble salt is sodium chloride, and the solid particles are aluminum oxide.
Wherein the solid particles have a particle size of 0.5 mm.
Wherein the weight ratio of the gelling agent, the water-soluble salt and the solid particles is 55: 30: 5.
wherein the drying temperature in the third step is 70 ℃.
Wherein the thickness of the shell is 4 mm.
Wherein the water absorbent is a starch acrylate polymer.
Wherein the weight ratio of the sodium chlorite powder to the hydrochloric acid powder to the water absorbent is 1:10: 50.
Wherein the diameter of the thin tube is 0.5 mm.
Example 3
The preparation method of the solid slow-release disinfectant for removing formaldehyde and air disinfection and odor comprises the following steps:
step one, mixing and uniformly stirring a gelling agent, water-soluble salt and solid particles to obtain a first mixture;
secondly, laying the first mixture on the bottom and the peripheral side wall of the mold, wherein water filtering holes are formed in the bottom and the side wall of the mold;
step three, injecting water into the first mixture paved in the mold to completely wet the first mixture in the mold, and then drying to obtain a shell with an opening at one end and a plurality of micropores on the periphery;
step four, mixing and uniformly stirring sodium chlorite powder, hydrochloric acid powder and a water absorbent to obtain disinfection powder;
laying sponge inside the shell, then putting the disinfection powder into the middle of the sponge, and then covering a waterproof membrane on the disinfection powder;
step six, adding water into the first mixture to mix the mixture into muddy mixed mud, then laying the mixed mud on a waterproof diaphragm, and blocking the opening of the shell;
and seventhly, inserting a plurality of thin tubes into the mixed mud laid at the opening of the shell, enabling one ends of the thin tubes to penetrate through the waterproof diaphragm, drying, and pulling out the thin tubes after drying to obtain the disinfectant.
Wherein the gelling agent is sodium aluminoferrite, the water-soluble salt is sodium sulfate, and the solid particles are calcium carbonate.
Wherein the particle size of the solid particles is 1 mm.
Wherein the weight ratio of the gelling agent, the water-soluble salt and the solid particles is 60: 35: 15.
wherein the drying temperature in the third step is 80 ℃.
Wherein the thickness of the shell is 5 mm.
Wherein the water absorbent is acrylamide-acrylonitrile-acrylic acid terpolymer.
Wherein the weight ratio of the sodium chlorite powder to the hydrochloric acid powder to the water absorbent is 1:15: 60.
Wherein the diameter of the thin tube is 1.5 mm.
The above-described embodiments are preferred implementations of the present invention, and the present invention may be implemented in other ways without departing from the spirit of the present invention.
Claims (6)
1. The preparation method of the solid slow-release disinfectant for removing formaldehyde and air disinfection and odor is characterized in that: the method comprises the following steps:
step one, mixing and uniformly stirring a gelling agent, water-soluble salt and solid particles to obtain a first mixture;
secondly, laying the first mixture on the bottom and the peripheral side wall of the mold, wherein water filtering holes are formed in the bottom and the side wall of the mold;
step three, injecting water into the first mixture paved in the mold to completely wet the first mixture in the mold, and then drying to obtain a shell with an opening at one end and a plurality of micropores on the periphery;
step four, mixing and uniformly stirring sodium chlorite powder, hydrochloric acid powder and a water absorbent to obtain disinfection powder;
laying sponge inside the shell, then putting the disinfection powder into the middle of the sponge, and then covering a waterproof membrane on the disinfection powder;
step six, adding water into the first mixture to mix the mixture into muddy mixed mud, then laying the mixed mud on a waterproof diaphragm, and blocking the opening of the shell;
seventhly, inserting a plurality of thin tubes into the mixed mud laid at the opening of the shell, enabling one ends of the thin tubes to penetrate through the waterproof diaphragm, drying, and pulling out the thin tubes after drying to obtain the disinfectant;
the gelling agent is any one of sodium silicate, sodium aluminate and sodium iron aluminate;
the solid particles are at least one of silicon dioxide, aluminum oxide and calcium carbonate;
the weight ratio of the gelling agent, the water-soluble salt and the solid particles is 55-60: 30-35: 5-15.
2. The method for preparing the solid slow-release disinfectant for removing formaldehyde and disinfecting and deodorizing air according to claim 1, which is characterized in that: the water-soluble salt is at least one of sodium carbonate, sodium chloride and sodium sulfate.
3. The method for preparing the solid slow-release disinfectant for removing formaldehyde and disinfecting and deodorizing air according to claim 1, which is characterized in that: the particle size of the solid particles is 0.5-1 mm.
4. The method for preparing the solid slow-release disinfectant for removing formaldehyde and disinfecting and deodorizing air according to claim 1, which is characterized in that: the drying temperature in the third step is 70-80 ℃.
5. The method for preparing the solid slow-release disinfectant for removing formaldehyde and disinfecting and deodorizing air according to claim 1, which is characterized in that: the weight ratio of the sodium chlorite powder to the hydrochloric acid powder to the water absorbent is 1:10-15: 50-60.
6. The method for preparing the solid slow-release disinfectant for removing formaldehyde and disinfecting and deodorizing air according to claim 1, which is characterized in that: the diameter of the thin tube is 0.5-1.5 mm.
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