CN111792624A - Low-volatilization high-efficiency chlorine dioxide disinfection system - Google Patents
Low-volatilization high-efficiency chlorine dioxide disinfection system Download PDFInfo
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- CN111792624A CN111792624A CN202010686482.6A CN202010686482A CN111792624A CN 111792624 A CN111792624 A CN 111792624A CN 202010686482 A CN202010686482 A CN 202010686482A CN 111792624 A CN111792624 A CN 111792624A
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- chlorine dioxide
- disinfection
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B11/00—Oxides or oxyacids of halogens; Salts thereof
- C01B11/02—Oxides of chlorine
- C01B11/022—Chlorine dioxide (ClO2)
- C01B11/023—Preparation from chlorites or chlorates
- C01B11/024—Preparation from chlorites or chlorates from chlorites
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/16—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using chemical substances
- A61L2/18—Liquid substances or solutions comprising solids or dissolved gases
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/26—Accessories or devices or components used for biocidal treatment
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
- A61L2202/10—Apparatus features
- A61L2202/11—Apparatus for generating biocidal substances, e.g. vaporisers, UV lamps
Abstract
The invention relates to the field of disinfectants, in particular to a chlorine dioxide surface disinfection system. A low-volatility high-efficiency chlorine dioxide disinfection system comprises a first distributor and a third distributor which are respectively provided with chlorine dioxide reactants, and a foam product-containing third distributor; the first distributor and the distributor share a disinfection spout, the first reactant and the second reactant are mixed and react to generate the disinfection composition and then are sprayed out from the disinfection outlet, and the synchronous foam generating substance is sprayed out from the foam outlet to cover the disinfection composition; the first, second and third dispensers have a common actuator for simultaneous dispensing of the sanitizing composition and the foam. The invention separately arranges the two reactants and the foam product, and the two reactants are fully mixed to generate the chlorine dioxide required by disinfection before being sprayed out, and has the advantages of high reaction speed, complete reaction and strong disinfection capability. Meanwhile, the foam is used for covering the chlorine dioxide, so that the speed and the concentration of the chlorine dioxide volatilized into the environment are reduced, and the use safety of the chlorine dioxide generator is ensured.
Description
Technical Field
The invention relates to the field of disinfectants, in particular to a chlorine dioxide surface disinfection system.
Background
Chlorine dioxide (ClO)2) Is an internationally recognized high-efficiency and safe oxidant, and can be used for sterilization, disinfection, fresh-keeping, bleaching and the like. The World Health Organization (WHO) classifies it as a sanitary safety class a 1. It can kill all microorganisms including bacteria, fungi, mycobacteria, viruses, bacterial spores and the like, realize high-level disinfection to sterilization, and has the disinfection activity not influenced by pH value. And these microorganisms are not easily resistant. This is because chlorine dioxide has a strong ability to adsorb and penetrate the cell wall of microorganisms, and can rapidly and efficiently oxidize enzymes containing mercapto (-S-) in cells, thereby rapidly inhibiting the synthesis of microbial proteins to kill microorganisms. Chlorine dioxide disinfection is relatively safe and reliable, and the chlorine dioxide is allowed to be used for drinking water disinfection no matter in foreign WHO, BPR, EPA regulations or domestic regulations, has low residue, does not produce harmful byproducts such as chloralkane, and can effectively destroy the peculiar smell generated by algae.
Chlorine dioxide under the GHS system is also classified as: and the GHS270 oxidizing gas is easy to ignite. Chlorine dioxide is unstable and prone to explosion and photolysis. Chlorine dioxide is therefore usually produced on-site before it is used. Common preparation methods include reduction methods and oxidation methods. The reduction is usually a reduction of chlorate, e.g. with hydrochloric acid, oxalic acid, etc. The oxidation method is to use an oxidant (Cl)2Or NaClO) oxidizing NaClO2Or NaClO in an acidic medium2Disproportionation reaction to produce ClO2. Typically one of the chambers is an adjuvant system such as chlorite or chlorate and its stabilizer, and the other chamber is an activator system.
Chlorine dioxide has a boiling point of about 11 ℃ at normal pressure and is readily soluble in water, oxalic acid, and organic solvents. ClO2Does not react with water, but the aqueous solution is unstable and gradually decomposes into ClO2And (4) escaping. Chlorine dioxide causes severe skin irritation and eye damage, causing edema in the lungs. Under the GHS system, the classification is: GHS314, GHS318, causing severe skin burn and eye damage, GHS330 is fatal by inhalation. Therefore, it is necessary to limit the space in which the protective device is worn except when touchingConcentration in gas. OSHA, NIOSH define a long-term contact limit of 0.1 ppm; chlorine dioxide PC-TWA (time weighted allowable concentration) is also limited to 0.3ppm in the chinese national standard GBZ 2.1.1-2007 workplace hazard occupational exposure limits. Therefore, the concentration of chlorine dioxide in air must be limited to control at safe levels.
In the prior art, the triester (Tristel) company discloses a disinfectant system for reducing the concentration of chlorine dioxide in air in chinese patent CN101107018A, and proposes a relatively smart solution: adding a foaming agent into the solution of the two components, wherein the two components spray foam when in use, then the foam reacts to generate chlorine dioxide, and the reaction speed is controlled by slow contact between the foam, so that the volatilization of the chlorine dioxide is reduced; however, the arrangement mode enables the reaction speed between the two foams to be slow, the foams can be used only when the activation reaction is complete after the foams are defoamed in the field use, the time is long, the turnover is slow, the use efficiency of equipment is reduced, and the effective diagnosis and treatment time is shortened.
Disclosure of Invention
The invention aims to solve the technical problem of providing a low-volatilization high-efficiency chlorine dioxide disinfection system, which is characterized in that two reactants and a foam product are separately arranged, so that the two reactants are fully mixed to generate chlorine dioxide required by disinfection before being sprayed out. Meanwhile, the chlorine dioxide solution generated by the reaction is covered by the foam, so that the speed and the concentration of the chlorine dioxide volatilized into the environment are reduced, and the use safety of the product is ensured.
The invention is realized by the following steps: a low-volatility high-efficiency chlorine dioxide disinfection system, which comprises three parts,
(1) a first part comprising a chlorite aqueous solution contained in a first dispenser, the chlorite aqueous solution further mixed with a first stabilizer to form a first reactant;
(2) a second part comprising an acidic solution contained in a second dispenser as a second reactant;
(3) a third part including a foaming agent solution filled in the third dispenser, the foaming agent solution being further mixed with a foam stabilizer to form a foam product;
wherein the first distributor and the second distributor share the same disinfection nozzle, the first reactant and the second reactant are mixed and react to generate the disinfection composition and then are sprayed out from the disinfection outlet, and the synchronous foam product is sprayed out from the foam outlet to cover the disinfection composition;
the first dispenser, the second dispenser and the third dispenser have a common actuating member which is operated to cause simultaneous ejection of the sanitizing composition and the foam.
The foam outlet is positioned below the disinfection outlet and extends out for a certain distance along the spraying direction.
The first stabilizer is one or more of carbonate, bicarbonate, percarbonate, hydrogen peroxide, silicate, borax, Ethylene Diamine Tetraacetic Acid (EDTA) and Ethylene Diamine Tetraacetic Acid (EDTA) sodium salt.
The first distributor also comprises a chlorine dioxide solubilizer.
The chlorine dioxide solubilizer is selected from one or more of ethanol, normal propyl alcohol, isopropanol, glycerol, ethylene glycol, diethylene glycol, polyethylene glycol, propylene glycol and dipropylene glycol, and is mixed in any proportion.
The acidic solution in the second dispenser is selected from aqueous solutions of acids; lactic acid, citric acid, boric acid, acetic acid, propionic acid, sorbic acid, glutaric acid, boric acid, hydrochloric acid, sulfuric acid and salts thereof, phosphoric acid and salts thereof, organic phosphoric acid and salts thereof, polyphosphoric acid and salts thereof, sulfonic acid and salts thereof, and the like.
One or more of the first dispenser, the second dispenser, and the third dispenser further contains a preservative.
The preservative is selected from one or more of BKC, borax, boric acid, sodium benzoate, OPA and ADBAC which are mixed in any proportion.
The foam stabilizer is selected from the group consisting of alkanolamides, amine oxides, betaines or protein hydrolysates and cellulose derivatives.
According to the low-volatilization high-efficiency chlorine dioxide disinfection system, the two reactants and the foam product are separately arranged, so that the two reactants are fully mixed to generate the chlorine dioxide required by disinfection before being sprayed out, compared with the contact of foam and foam in the prior art, the low-volatilization high-efficiency chlorine dioxide disinfection system is high in reaction speed and more complete in reaction, and under the premise of the same spraying amount, the concentration of the chlorine dioxide is greatly improved, so that the sterilization efficiency is improved. Meanwhile, the chlorine dioxide solution generated by the reaction is covered by the foam, so that the speed and the concentration of the chlorine dioxide volatilized into the environment are reduced, and the use safety of the product is ensured.
Drawings
FIG. 1 is a schematic view of a dispenser assembly for a low volatility high efficiency chlorine dioxide sanitizing system of the present invention;
FIG. 2 is a perspective view of the rear side of the present invention;
FIG. 3 is a schematic bottom view of an actuator according to an embodiment of the present invention;
fig. 4 is a schematic perspective view of an embodiment of the present invention.
In the figure: 1 first dispenser, 2 second dispenser, 3 third dispenser, 4 outer housing, 5 actuating member, 6 vacuum pump, 7 mixing chamber, 8 disinfection outlet, 9 foam outlet.
Detailed Description
The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes and modifications can be made by one skilled in the art after reading the description of the present invention, and equivalents fall within the scope of the invention defined by the appended claims.
Examples
In this specification, all parts are parts by weight unless otherwise indicated.
As shown in fig. 1, 2 and 3, the low-volatility high-efficiency chlorine dioxide disinfection system comprises a first distributor 1, a second distributor 2 and a third distributor 3, wherein the first distributor 1 is filled with a first reactant, the second distributor 2 is filled with a second reactant, and the third distributor 3 is filled with a foam generating material.
The first dispenser 1, the second dispenser 2 and the third dispenser 3 are arranged in the same outer casing 4 and are each provided with a vacuum pump 6 controlled by a common actuating member 5; wherein the outlets of the vacuum pumps 6 of the first distributor 1 and the second distributor 2 are communicated with a disinfection outlet 8 through a mixing cavity 7; the outlet of the vacuum pump 6 of the third distributor 3 is communicated with a foam outlet 9; the first reactant and the second reactant are mixed in the mixing cavity 7 to react to generate a disinfection composition, and then the disinfection composition is sprayed out from the disinfection outlet 8, and the foam product is synchronously sprayed out from the foam outlet 9 to cover the disinfection composition;
the invention can be further described as the actuator 5 is a gland that cooperates with the outer housing 4 and that covers the top of the first dispenser 1, the second dispenser 2 and the third dispenser 3; the mixing chamber 7 is arranged in the gland and the disinfection outlet 8 and the foam outlet 9 are arranged on the gland.
As shown in fig. 4, considering that the foam has a large weight, the speed of the foam is significantly lower than that of the mist sprayed from the sterilizing outlet 8 as the sterilizing composition, so as to ensure that the foam sprayed synchronously just covers the sterilizing composition and the convenience of the layout; in this embodiment, preferably, the foam outlet 9 is located below the disinfection outlet 8, and the foam outlet 9 extends a certain distance in the ejection direction; the distance that foam export 9 stretches out is 2 ~ 5 cm.
In the invention, in order to simplify the operation of a user and ensure the material distribution efficiency of an actual product in use; the first dispenser and the dispenser have the same volume, and two vacuum pumps 6 draw the first reactant and the second reactant in equal volume at each pressing.
Direct liquid-liquid mixing between a first reactant and a second reactantCan quickly and completely react to generate chlorine dioxide ClO required by disinfection2Relative to the slow reaction between foams in the same chlorine dioxide ClO2Under the condition of the spraying amount of reactants, the instant generated ClO is greatly improved2The reaction time is shortened and the operation time of the whole disinfection operation is reduced due to the concentration of the active carbon; meanwhile, the foam product synchronously sprays foam from the foam outlet to cover the generated chlorine dioxide ClO2In addition, the volatilization of ClO into the environment can be greatly reduced2The concentration ensures the safety of the product.
(1) A first part comprising an aqueous chlorite solution contained in a first dispenser 1, the aqueous chlorite solution being further mixed with a first stabilizer to form a first reactant;
in general, the concentration of the chlorite ranges from 0.1 mg/L to 200g/L, preferably from 10mg/L to 10g/L, in order to ensure the sterilization effect; the mass percentage content of the first stabilizer in the first reactant is 0.1-50%, preferably 0.5-10%.
In this example, chlorite can be formed from a suitable known reaction to form ClO2The reactant of (1) is selected from sodium chlorite, potassium chlorite, calcium chlorite, magnesium chlorite and ammonium chlorite. The first stabilizer is one or more of carbonate, bicarbonate, percarbonate, hydrogen peroxide, silicate, borax, Ethylene Diamine Tetraacetic Acid (EDTA) and Ethylene Diamine Tetraacetic Acid (EDTA) sodium salt.
In addition, in order to increase the number of times the product is used, the chlorine dioxide ClO generated by single pressing can be ensured without increasing the volume of the jet2The amount of (c); in this embodiment, the first dispenser further includes a chlorine dioxide solubilizer, wherein the chlorine dioxide solubilizer is selected from one or more of ethanol, n-propanol, isopropanol, glycerol, ethylene glycol, diethylene glycol, polyethylene glycol, propylene glycol, and dipropylene glycol, and is mixed in any proportion. The mass percentage content of the chlorine dioxide solubilizer in the first reactant is 0.2-30%, preferably 1-10%; chlorine dioxide solubilizerCan also reduce ClO2The volatilization speed increases the retention time, thereby improving the killing effect on microorganisms.
(2) A second part comprising an acidic solution contained in a second dispenser 2, to become a second reactant;
in the present invention, the acidic solution in the second dispenser is selected from aqueous solutions of acids; lactic acid, citric acid, boric acid, acetic acid, propionic acid, sorbic acid, glutaric acid, boric acid, hydrochloric acid, sulfuric acid and salts thereof, phosphoric acid and salts thereof, organic phosphoric acid and salts thereof, polyphosphoric acid and salts thereof, sulfonic acid and salts thereof, and the like are mixed in an arbitrary ratio, and the amount of the acid used in the second reactant is usually 0.5 to 20% by mass.
(3) A third part including a foaming agent solution filled in the third dispenser 3, the foaming agent solution being further mixed with a foam stabilizer to form a foam product;
in this embodiment, the content of the foaming agent in the foam product is 0.1 to 50% by mass, preferably 5 to 30% by mass; the mass percentage content of the foam stabilizer in the foam product is 0.1-40%, preferably 1-25%.
In this embodiment, the foaming agent is well known to those skilled in the art, and may be selected from, but not limited to, aqueous solutions of: sodium laureth sulfate (sodium laureth sulfate), ammonium lauryl sulfate, cocodiethanolamide (cocamide DEA), cocamidopropyl betaine, sodium lauryl sarcosinate, cocamidopropyl amine oxide, monoethanolamine lauryl sulfate, cocamidopropyl hydroxysultaine, cocoyl sarcosinate. Anionic, cationic, nonionic and amphoteric surfactants may be added depending on the chemical nature of the reactants.
In this example, the foam stabilizer is combined with a foaming agent, the foam stabilizer being selected from the group consisting of alkanolamides, amine oxides, betaines, protein hydrolysates, and cellulose derivatives.
Meanwhile, in consideration of the shelf life of the product, the first reactant, the second reactant and the foam product are prevented from deteriorating during storage and transportation, and one or more of the first dispenser, the second dispenser and the third dispenser further contains a preservative. The preservative is selected from one or more of the list of disinfection raw materials in GB 38850-2020 and a mixture of the preservatives in any proportion, and the usage amount of the preservative is 0.01-10% of the mass of reactants/products in the distributor. So as to ensure that the first, second and third reactants or the mixture can not breed or be polluted by microorganisms in the storage process, and prolong the shelf life and the effective period of the product; in this example, the preservatives are generally selected from: BKC, borax, boric acid, sodium benzoate, OPA and ADBAC.
In order to test the sterilization and safety of the final product, 5 products were configured as shown in table 1:
TABLE 1
The following tests for the disinfection performance were now carried out on the products of examples 1 to 5,
the experimental method comprises the following steps:
1. ClO in the atmosphere at the time of use2And (3) concentration determination: 5mL of the mixture is sprayed out of the disinfection system on non-woven fabrics (pressed for 5 complete strokes), and the concentration of chlorine dioxide in the atmosphere air is measured by a portable chlorine dioxide detector at a position which is 30cm above the sprayed mixture; when the bubble is not sprayed, the solution in the chamber of the third distributor is changed into the purified water under the condition that the chambers of the first distributor and the second distributor are not changed.
2. Spore killing factor: after mixing three chambers in equal volume for 1min, performing Bacillus subtilis black variant spore killing experiment according to disinfection technical specification (2002 edition) suspension method for 1 min.
The results of the control tests are shown in table 2,
TABLE 2 test results
And (4) conclusion:
1. the disinfection system covered by the spray bubbles effectively and greatly reduces the concentration of the chlorine dioxide volatilized in the air atmosphere. So that the chlorine dioxide concentration limit value requirement in GBZ 2.1.1-2007 workplaces is met in the field use.
2. The killing ability against microorganisms, as a high level disinfectant, was measured by the Bacillus subtilis var niger kill level. As can be seen from table 2, the spore kill factors all meet the kill requirements of high levels of disinfectant (kill factor > 5) when the suspension kill experiment was performed. The level of kill is higher when chlorite is used in higher amounts.
Claims (10)
1. A low-volatilization high-efficiency chlorine dioxide disinfection system is characterized in that: comprises three parts, namely a first part and a second part,
a first part comprising an aqueous chlorite solution contained in a first dispenser, the aqueous chlorite solution further mixed with a first stabilizer to form a first reactant;
a second part comprising an acidic solution contained in a second dispenser as a second reactant;
a third part including a foaming agent solution filled in the third dispenser, the foaming agent solution being further mixed with a foam stabilizer to form a foam product;
the first distributor and the second distributor share the same disinfection spray outlet, the first reactant and the second reactant are mixed and react to generate the disinfection composition and then are sprayed out from the disinfection outlet, and the foam product is synchronously sprayed out from the foam outlet to cover the disinfection composition.
2. The low volatility high efficiency chlorine dioxide sanitizing system as set forth in claim 1, wherein: the first dispenser, the second dispenser and the third dispenser have a common actuating member which is operated to cause simultaneous ejection of the sanitizing composition and the foam.
3. The low volatility high efficiency chlorine dioxide sanitizing system as set forth in claim 1, wherein: the foam outlet is positioned below the disinfection outlet and extends out for a certain distance along the spraying direction.
4. A low-volatility high-efficiency chlorine dioxide disinfection system as claimed in any one of claims 1 to 3, wherein: the first stabilizer is one or more of carbonate, bicarbonate, percarbonate, hydrogen peroxide, silicate, borax, Ethylene Diamine Tetraacetic Acid (EDTA) and Ethylene Diamine Tetraacetic Acid (EDTA) sodium salt.
5. The low volatility high efficiency chlorine dioxide sanitizing system according to claim 4, wherein: the first distributor also comprises a chlorine dioxide solubilizer.
6. The low volatility high efficiency chlorine dioxide sanitizing system according to claim 5, wherein: the chlorine dioxide solubilizer is selected from one or more of ethanol, normal propyl alcohol, isopropanol, glycerol, ethylene glycol, diethylene glycol, polyethylene glycol, propylene glycol and dipropylene glycol, and is mixed in any proportion.
7. The low volatility high efficiency chlorine dioxide sanitizing system according to claim 4, wherein: the acidic solution in the second dispenser is selected from aqueous solutions of acids; lactic acid, citric acid, boric acid, acetic acid, propionic acid, sorbic acid, glutaric acid, boric acid, hydrochloric acid, sulfuric acid and salts thereof, phosphoric acid and salts thereof, organic phosphoric acid and salts thereof, polyphosphoric acid and salts thereof, sulfonic acid and salts thereof, and the like.
8. The low volatility high efficiency chlorine dioxide sanitizing system according to claim 4, wherein: one or more of the first dispenser, the second dispenser, and the third dispenser further contains a preservative.
9. The low volatility high efficiency chlorine dioxide sanitizing system according to claim 8, wherein: the preservative is selected from one or more of BKC, borax, boric acid, sodium benzoate, OPA and ADBAC which are mixed in any proportion.
10. The low volatility high efficiency chlorine dioxide sanitizing system according to claim 4, wherein: the foam stabilizer is selected from the group consisting of alkanolamides, amine oxides, betaines or protein hydrolysates and cellulose derivatives.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2608139A (en) * | 2021-06-23 | 2022-12-28 | Tristel Plc | Apparatus for preparing a liquid preparation |
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| JPH11228317A (en) * | 1998-02-20 | 1999-08-24 | Business Plan Kk | Foaming composition |
| WO2002009819A2 (en) * | 2000-07-28 | 2002-02-07 | Ansul, Incorporated | Aqueous foamable concentrates and methods |
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