CN113907072A - Preparation method of high-precision weak acid hypochlorite disinfectant - Google Patents
Preparation method of high-precision weak acid hypochlorite disinfectant Download PDFInfo
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Abstract
The invention discloses a preparation method of a high-precision weak hypochlorous acid disinfectant, which is prepared from the following raw materials in parts by weight: 1-3 parts of sodium sulfamate, 75-90 parts of hypochlorous acid, 3.5-5 parts of calcium hypochlorite, 5-8 parts of citric acid, 4-10 parts of hydrochloric acid and 2-15 parts of stabilizer. Has the advantages that: the disinfectant has the advantages of high safety, no stimulation to skin, no pain when being used for wounds, reduction of the burden of patients in the treatment of burns, skin-friendly and skin-care sterilization effect, strong chlorine concentration stability, high-efficiency and high-precision sterilization effect, no carcinogenesis, no teratogenicity, no mutagenicity, no corrosivity, food-grade safety, no residue, natural decomposition, environmental protection, stable product system and long shelf life.
Description
Technical Field
The invention relates to the technical field of disinfectant, in particular to a preparation method of a high-precision hypochlorous acid weak acid disinfectant.
Background
Along with the development of society, people pay more and more attention to environmental sanitation and disinfection. The hypochlorous acid water can be used for disinfecting various objects in various occasions such as medical health institutions, various public places, food processing, restaurants, families and the like, and comprises the disinfection of endoscopes, surgical instruments, sore/wound surfaces, skin mucous membranes, air, hands, object surfaces and fabrics, fruits and vegetables, tableware, secondary water supply equipment facilities and the like. Therefore, the chlorine-containing disinfectant fluid is generally accepted by people because of low price and excellent sterilization effect, and can meet the sterilization requirements of daily life, so that the weak acidic hypochlorous acid has obvious sterilization effect on escherichia coli, pseudomonas aeruginosa, corynebacterium, klebsiella pneumoniae, candida albicans and the like, and is killed within minutes after being exposed in the weak acidic hypochlorous acid.
In general, in the production process of weakly acidic hypochlorous acid disinfectant, when the aqueous solution is changed into strongly acidic, a large amount of chlorine gas is generated, so that the content of available chlorine is reduced, the pH value of the solution is influenced, the disinfection and sterilization effects of the solution are finally influenced, the stability of the hypochlorous acid disinfectant is poor, the influence of environmental factors is large, and the preservation time is short.
An effective solution to the problems in the related art has not been proposed yet.
Disclosure of Invention
Aiming at the problems in the related art, the invention provides a preparation method of a high-precision weak-acid hypochlorite disinfectant, which aims to overcome the technical problems in the prior related art.
The technical scheme of the invention is realized as follows:
according to one aspect of the invention, a high-precision weak-acid hypochlorite disinfectant is provided
The high-precision weak acid hypochlorite disinfectant is prepared from the following raw materials in parts by weight:
1-3 parts of sodium sulfamate, 75-90 parts of hypochlorous acid, 3.5-5 parts of calcium hypochlorite, 5-8 parts of citric acid, 4-10 parts of hydrochloric acid and 2-15 parts of stabilizer;
wherein, the stabilizer comprises the following raw material components: 0.5 to 2 portions of sodium chloride, 0.5 to 2 portions of boric acid, 0.1 to 0.3 portion of potassium chloride, 0.1 to 0.4 portion of calcium chloride, 0.1 to 0.3 portion of sodium sulfate, 0.05 to 0.5 portion of sodium pyrophosphate, 0.1 to 0.2 portion of sodium carbonate, 0.1 to 0.4 portion of sodium bicarbonate, 0.1 to 0.4 portion of potassium bicarbonate, 0.1 to 0.4 portion of sodium silicate and 0.1 to 0.3 portion of dichloroisocyanuric acid.
Optionally, the high-precision weak hypochlorous acid disinfectant comprises the following raw material components: 1 part of sodium sulfamate, 75 parts of hypochlorous acid, 3.5 parts of calcium hypochlorite, 5 parts of citric acid, 4 parts of hydrochloric acid and 2 parts of stabilizer.
Wherein, the stabilizer comprises the following raw material components: 0.5 part of sodium chloride, 0.5 part of boric acid, 0.1 part of potassium chloride, 0.1 part of calcium chloride, 0.1 part of sodium sulfate, 0.05 part of sodium pyrophosphate, 0.1 part of sodium carbonate, 0.1 part of sodium bicarbonate, 0.1-0.4 part of potassium bicarbonate, 0.1 part of sodium silicate and 0.1 part of dichloroisocyanuric acid.
Optionally, the high-precision weak hypochlorous acid disinfectant comprises the following raw material components: 3 parts of sodium sulfamate, 90 parts of hypochlorous acid, 5 parts of calcium hypochlorite, 8 parts of citric acid, 10 parts of hydrochloric acid and 15 parts of stabilizer.
Wherein, the stabilizer comprises the following raw material components: 2 parts of sodium chloride, 2 parts of boric acid, 0.3 part of potassium chloride, 0.1-0.4 part of calcium chloride, 0.3 part of sodium sulfate, 0.5 part of sodium pyrophosphate, 0.2 part of sodium carbonate, 0.4 part of sodium bicarbonate, 0.4 part of potassium bicarbonate, 0.4 part of sodium silicate and 0.3 part of dichloroisocyanuric acid.
Further, the concentration of hydrogen ions in the citric acid is 9-10.5 mol/L.
According to another aspect of the invention, a preparation method of the high-precision weak hypochlorite disinfectant is provided.
The method comprises the following steps:
stirring and mixing calcium hypochlorite, citric acid, sodium sulfamate and a stabilizer to prepare a stable solution;
adding hydrochloric acid into a salt dissolving device of equipment, dissolving into 10-15% hydrochloric acid water, opening a valve, and allowing the hydrochloric acid water to enter a salt storage tank through filtration and precipitation;
starting an automatic water distribution switch, and automatically blending hydrochloric acid water into hydrochloric acid solution with the concentration of about 4-10 by the equipment;
hydrochloric acid solution with volume concentration of 4-10 is prepared to be used as an electrolysis raw material of a hypochlorous acid generator;
opening a valve to adjust a metering pump, and allowing the blended hydrochloric acid solution and the obtained solution I to enter the hypochlorous acid generator through a pump body;
adopting electrochemical activation technology, mixing and electrolyzing in a sandwich type ceramic nanometer diaphragm electrolytic cell consisting of a cathode tube and an anode tube to generate hypochlorous acid initial solution;
adding 50-200ppm of a stabilizing solution to the generated hypochlorous acid initial solution;
adding the mixture into a reactor and stirring for 10-20 minutes to finally generate the hypochlorous acid disinfectant with high precision and high stability.
Furthermore, the hydrochloric acid is used for adjusting the pH value, so that the pH value of the hypochlorous acid solution reaches 3.0-6.0, and is close to the pH value of human skin.
Further, the concentration of the available chlorine in the hypochlorous acid solution is 180-260mg/L, and the pH value of the hypochlorous acid solution is 4-7; the detection method of the available chlorine is GB/T36758-2018.
The invention provides a preparation method of a high-precision weak hypochlorous acid disinfectant, which has the following beneficial effects: the invention increases the stability of the sodium sulfamate, the calcium hypochlorite and the citric acid by the stabilizer, reduces the cost because the concentration of the effective chlorine in the solution is lower and is between 50 and 200ppm, does not stimulate the eyeball, mucous membrane and the like and reduces the injury to users, simultaneously, the hydrochloric acid adjusts the pH value to ensure that the pH value of the hypochlorous acid solution reaches 3.0 to 6.0, generates stable hypochlorous acid with higher sterilization effect because the pH value is close to the pH value of human skin and the stabilizer is dissolved in water, greatly improves the sterilization effect, reduces the concentration of the effective chlorine in use, thereby reducing the cost, can damage the phosphate dehydrogenase of bacteria by diffusing to the surfaces of thallus with negative charges and penetrating into the interior of the thallus through cell walls through small neutral molecules, make the unbalance of glycometabolism and cause the bacterium death, not only have the effect of disinfecting through the hypochlorous acid antiseptic solution, sterile, high accuracy hypochlorous acid sterilization water and human pH value are imitative, the security is high, can directly use on skin, no stimulation to skin, can not aggravate painful sense when being used for the wound, reduce patient's burden on the treatment of burn, the bactericidal effect who has the skin-friendly skin care, and chlorine concentration stability is strong, the sterilizing effect of high-efficient high accuracy has, and carcinogenesis-free, no teratogenicity, no mutability, no corrosivity, food level safety, no residue, the green environmental protection disinfectant that can decompose naturally, the product system is stable, shelf life time is long.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a flow chart of a method for preparing a high-precision weak acid hypochlorite disinfectant according to an embodiment of the present invention;
FIG. 2 is a hypochlorous acid solution sterilization experiment indication diagram of a method for preparing a high-precision hypochlorous acid weak acid disinfectant according to an embodiment of the present invention;
FIG. 3 is a comparison diagram of bactericidal spectra of a method for preparing a high-precision weak-acid hypochlorite disinfectant according to an embodiment of the present invention.
Detailed Description
For further explanation of the various embodiments, the drawings which form a part of the disclosure and which are incorporated in and constitute a part of this specification, illustrate embodiments and, together with the description, serve to explain the principles of operation of the embodiments, and to enable others of ordinary skill in the art to understand the various embodiments and advantages of the invention, and, by reference to these figures, reference is made to the accompanying drawings, which are not to scale and wherein like reference numerals generally refer to like elements.
According to the embodiment of the invention, the high-precision weak hypochlorous acid disinfectant is provided.
The feed is prepared from the following raw materials in parts by mass:
1-3 parts of sodium sulfamate, 75-90 parts of hypochlorous acid, 3.5-5 parts of calcium hypochlorite, 5-8 parts of citric acid, 4-10 parts of hydrochloric acid and 2-15 parts of stabilizer;
wherein, the stabilizer comprises the following raw material components: 0.5 to 2 portions of sodium chloride, 0.5 to 2 portions of boric acid, 0.1 to 0.3 portion of potassium chloride, 0.1 to 0.4 portion of calcium chloride, 0.1 to 0.3 portion of sodium sulfate, 0.05 to 0.5 portion of sodium pyrophosphate, 0.1 to 0.2 portion of sodium carbonate, 0.1 to 0.4 portion of sodium bicarbonate, 0.1 to 0.4 portion of potassium bicarbonate, 0.1 to 0.4 portion of sodium silicate and 0.1 to 0.3 portion of dichloroisocyanuric acid.
In order to clearly understand the technical scheme of the invention, the technical scheme of the invention is described in detail through specific examples.
Example one
A high-precision weak acid hypochlorite disinfectant is prepared from the following raw materials in parts by weight: 1 part of sodium sulfamate, 75 parts of hypochlorous acid, 3.5 parts of calcium hypochlorite, 5 parts of citric acid, 4 parts of hydrochloric acid and 2 parts of stabilizer.
Wherein, the stabilizer comprises the following raw material components: 0.5 part of sodium chloride, 0.5 part of boric acid, 0.1 part of potassium chloride, 0.1 part of calcium chloride, 0.1 part of sodium sulfate, 0.05 part of sodium pyrophosphate, 0.1 part of sodium carbonate, 0.1 part of sodium bicarbonate, 0.1-0.4 part of potassium bicarbonate, 0.1 part of sodium silicate and 0.1 part of dichloroisocyanuric acid.
Example two
A high-precision weak acid hypochlorite disinfectant is prepared from the following raw materials in parts by weight: 3 parts of sodium sulfamate, 90 parts of hypochlorous acid, 5 parts of calcium hypochlorite, 8 parts of citric acid, 10 parts of hydrochloric acid and 15 parts of stabilizer.
Wherein, the stabilizer comprises the following raw material components: 2 parts of sodium chloride, 2 parts of boric acid, 0.3 part of potassium chloride, 0.1-0.4 part of calcium chloride, 0.3 part of sodium sulfate, 0.5 part of sodium pyrophosphate, 0.2 part of sodium carbonate, 0.4 part of sodium bicarbonate, 0.4 part of potassium bicarbonate, 0.4 part of sodium silicate and 0.3 part of dichloroisocyanuric acid.
In one embodiment, the concentration of hydrogen ions in the citric acid is 9-10.5 mol/L.
As shown in fig. 1, according to an embodiment of the present invention, a method for preparing a high-precision weak hypochlorite disinfectant is also provided.
The method comprises the following steps:
step S101, stirring and mixing calcium hypochlorite, citric acid, sodium sulfamate and a stabilizer to prepare a stable solution;
step S103, adding hydrochloric acid into a salt dissolving device of equipment, dissolving into 10% -15% hydrochloric acid water, opening a valve to allow the hydrochloric acid water to enter a salt storage tank through filtering and precipitation;
step S105, starting an automatic water distribution switch, and automatically blending hydrochloric acid water into hydrochloric acid solution with the concentration of about 4-10 by equipment;
step S107, preparing hydrochloric acid solution with volume concentration of 4-10 as an electrolysis raw material of a hypochlorous acid generator;
step S109, opening a valve to adjust a metering pump, and allowing the blended hydrochloric acid solution and the obtained solution I to enter a hypochlorous acid generator through a pump body;
step S111, adopting an electrochemical activation technology, and mixing and electrolyzing in a sandwich type ceramic nanometer diaphragm electrolytic cell consisting of a cathode tube and an anode tube to generate a hypochlorous acid initial solution;
step S113, adding 50-200ppm of a stable solution to the generated hypochlorous acid initial solution;
and step S115, adding the mixture into a reactor, and stirring for 10-20 minutes to finally generate the hypochlorous acid disinfectant with high precision and high stability.
In one embodiment, the hydrochloric acid is adjusted to a pH of 3.0 to 6.0, which is similar to the pH of human skin.
In one embodiment, the concentration of available chlorine in the hypochlorous acid solution is 180-260mg/L, and the pH value of the hypochlorous acid solution is 4-7; the detection method of the available chlorine is GB/T36758-2018.
Oxidation principle of hypochlorous acid: hypochlorous acid is a small neutral molecule, can diffuse to the surface of the thallus with negative charges and penetrate into the thallus through cell walls to play an oxidizing role, so that the phosphate dehydrogenase of the bacteria is damaged, and the sugar metabolism is unbalanced to cause the death of the bacteria;
decomposing hypochlorous acid to form nascent oxygen, and oxidizing thallus protein;
chlorine interferes with the metabolism of cells by binding to cell membrane proteins to form nitrogen chlorine compounds, which ultimately cause the death of bacteria.
Solution stability: the pH value is adjusted at will between 3.0 and 8.5, the effective chlorine concentration is 20 to 1000ppm, and the ORP reaches more than 1100 mv. The effective chlorine of the product is not reduced by more than 6% after being stored for one year under the condition of sealed shading at normal temperature.
Broad-spectrum sterilization: can kill various viruses and bacteria, including novel coronavirus, HIV, and Ebola virus.
And (3) sterilization is rapid: the high-precision hypochlorous acid weak acid water has stronger oxidizing power than sodium hypochlorite, the sterilizing power is stronger, the sterilizing capability is 8-10 times of that of 84 sterilizing liquid, and the sterilizing speed is 80 times of that of 84 sterilizing liquid! The deodorization efficiency is also several times or even tens of times of that of sodium hypochlorite, and the deodorization effect can be achieved under low concentration, so that the deodorization effect is more than half times. The experiments were carried out at 20 ℃ in a 0.3ppm concentration DCW hypochlorous acid solution. (see fig. 2)
No toxicity and stimulation: the principle of human body immunity sterilization is simulated: when bacteria invade the human body, the oxygen metabolism of the neutrophils in the body is activated, and active oxygen is produced. Based on the active oxygen, hydrogen peroxide is formed, and hypochlorous acid is generated through further enzyme action and attacks the membrane wall of bacteria to achieve the sterilization effect, so that the bacteria are prevented from invading the tissues in the body.
The corrosivity is low: can be used as water (scrubbing and soaking), can also be directly sprayed on the surfaces of human bodies and objects or indoor air, has no residue, no corrosion and no flushing, and is an oral harmless sterilization and disinfection product. Most of the active ingredients of other common disinfection products in our lives are strong alkalis (such as sodium hypochlorite disinfectant), but the alkaline disinfection products can decompose epidermal oil of the skin and cause skin chap after being used for a long time. Another class of disinfectants in widespread use has been the phenolic organic compounds, which, although relatively mild in nature, have the potential to be toxic and harmful to human cells due to the presence of chemical substances containing benzene rings.
Experiment design:
when the chlorine is 0.1mg/L, the sterilization time is HCIO:1.5minCIO120min, namely 120/1.5 ═ 80, the hypochlorous acid is 80 times of the sterilization effect of hypochlorite ions, the high-precision hypochlorous acid has the concentration of 1/10pH of the sodium hypochlorite of 5.0-6.5, and the sterilization spectrum of the benzalkonium chloride bactericide is compared (as shown in FIG. 3);
wherein: high-precision hypochlorous acid weak acid water: effective chlorine concentration 57PPM PH7.2(23 ℃ C.)
Benzalkonium chloride: the effective concentration is 0.05 percent
③ sodium hypochlorite: effective concentration of 200PPM
For the convenience of understanding the technical solutions of the present invention, the following detailed description will be made on the working principle or the operation mode of the present invention in the practical process.
In conclusion, by means of the technical scheme of the invention, the stability of the sodium sulfamate, the calcium hypochlorite and the citric acid which are matched with the sodium sulfamate, the calcium hypochlorite and the citric acid is increased by the stabilizing agent, the concentration of effective chlorine in the solution is lower and is between 50 and 200ppm when in use, besides the cost is reduced, chlorine is released very little, no stimulation is generated on eyeballs, mucous membranes and the like, the injury to users is reduced, meanwhile, the PH value of the hypochlorous acid solution is adjusted by hydrochloric acid, the PH value of the hypochlorous acid solution reaches 3.0 to 6.0, the stable hypochlorous acid with higher sterilization effect is generated after the stabilizing agent is dissolved in water, the sterilization effect is greatly improved, the concentration of the effective chlorine is reduced in use, the cost is reduced, and the hypochlorous acid is a neutral molecule, can diffuse to the surface of thallus with negative charges and penetrate into the interior of the thallus through cell walls to play an oxidation role, the disinfectant has the advantages that the disinfectant has the effects of sterilization and disinfection, high-precision hypochlorous acid sterilization and disinfection water is similar to the pH value of a human body, the safety is high, the disinfectant can be directly used on skin, no stimulation is caused to the skin, the pain feeling can not be aggravated when the disinfectant is used for wounds, the burden of a patient is reduced in the treatment of burn, the disinfectant has the effects of skin-friendly and skin-care sterilization, the stability of chlorine concentration is high, the disinfectant has high-efficiency and high-precision sterilization and disinfection effects, and the disinfectant is carcinogenic, teratogenic, mutagenic, non-corrosive, food-grade safe, residue-free, naturally-degradable, green environment-friendly disinfectant, stable in product system and long in shelf life.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. The high-precision weak hypochlorous acid disinfectant is characterized by being prepared from the following raw materials in parts by weight:
1-3 parts of sodium sulfamate, 75-90 parts of hypochlorous acid, 3.5-5 parts of calcium hypochlorite, 5-8 parts of citric acid, 4-10 parts of hydrochloric acid and 2-15 parts of stabilizer;
wherein, the stabilizer comprises the following raw material components: 0.5 to 2 portions of sodium chloride, 0.5 to 2 portions of boric acid, 0.1 to 0.3 portion of potassium chloride, 0.1 to 0.4 portion of calcium chloride, 0.1 to 0.3 portion of sodium sulfate, 0.05 to 0.5 portion of sodium pyrophosphate, 0.1 to 0.2 portion of sodium carbonate, 0.1 to 0.4 portion of sodium bicarbonate, 0.1 to 0.4 portion of potassium bicarbonate, 0.1 to 0.4 portion of sodium silicate and 0.1 to 0.3 portion of dichloroisocyanuric acid.
2. A high-precision weak-acid hypochlorite disinfectant as claimed in claim 1, wherein the disinfectant is prepared from sodium sulfamate 1, hypochlorous acid 75, calcium hypochlorite 3.5, citric acid 5, hydrochloric acid 4, and stabilizer 2.
3. A high-precision weak acid hypochlorite disinfectant as claimed in claim 2, wherein said stabilizer comprises the following raw materials: 0.5 part of sodium chloride, 0.5 part of boric acid, 0.1 part of potassium chloride, 0.1 part of calcium chloride, 0.1 part of sodium sulfate, 0.05 part of sodium pyrophosphate, 0.1 part of sodium carbonate, 0.1 part of sodium bicarbonate, 0.1-0.4 part of potassium bicarbonate, 0.1 part of sodium silicate and 0.1 part of dichloroisocyanuric acid.
4. A high-precision weak-acid hypochlorite disinfectant as claimed in claim 1, wherein said disinfectant comprises sodium sulfamate 3, hypochlorous acid 90, calcium hypochlorite 5, citric acid 8, hydrochloric acid 10, and stabilizer 15.
5. A high-precision weak acid hypochlorite disinfectant as claimed in claim 4, wherein said stabilizer comprises the following raw materials: 2 parts of sodium chloride, 2 parts of boric acid, 0.3 part of potassium chloride, 0.1-0.4 part of calcium chloride, 0.3 part of sodium sulfate, 0.5 part of sodium pyrophosphate, 0.2 part of sodium carbonate, 0.4 part of sodium bicarbonate, 0.4 part of potassium bicarbonate, 0.4 part of sodium silicate and 0.3 part of dichloroisocyanuric acid.
6. The method for preparing a high-precision weak acid hypochlorite disinfectant solution as claimed in claim 1, wherein the concentration of hydrogen ions in the citric acid is 9-10.5 mol/L.
7. The method for preparing a high-precision weak hypochlorite disinfectant as claimed in claim 1, wherein the method for preparing the high-precision weak hypochlorite disinfectant as claimed in claim 1 comprises the following steps:
stirring and mixing calcium hypochlorite, citric acid, sodium sulfamate and a stabilizer to prepare a stable solution;
adding hydrochloric acid into a salt dissolving device of equipment, dissolving into 10-15% hydrochloric acid water, opening a valve, and allowing the hydrochloric acid water to enter a salt storage tank through filtration and precipitation;
starting an automatic water distribution switch, and automatically blending hydrochloric acid water into hydrochloric acid solution with the concentration of about 4-10 by the equipment;
hydrochloric acid solution with volume concentration of 4-10 is prepared to be used as an electrolysis raw material of a hypochlorous acid generator;
opening a valve to adjust a metering pump, and allowing the blended hydrochloric acid solution and the obtained solution I to enter the hypochlorous acid generator through a pump body;
adopting electrochemical activation technology, mixing and electrolyzing in a sandwich type ceramic nanometer diaphragm electrolytic cell consisting of a cathode tube and an anode tube to generate hypochlorous acid initial solution;
adding 50-200ppm of a stabilizing solution to the generated hypochlorous acid initial solution;
adding the mixture into a reactor and stirring for 10-20 minutes to finally generate the hypochlorous acid disinfectant with high precision and high stability.
8. The method for preparing a high-precision weak-acid hypochlorite disinfectant as claimed in claim 1, wherein the hydrochloric acid is used for adjusting the pH value of hypochlorous acid solution to 3.0-6.0, which is similar to the pH value of human skin.
9. The method as claimed in claim 1, wherein the concentration of available chlorine in the hypochlorous acid solution is 180-260mg/L, and the pH of the hypochlorous acid solution is 4-7; the detection method of the available chlorine is GB/T36758-2018.
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