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Indoor air sterilization and disinfection method

A disinfection method and indoor air technology, applied in the directions of disinfection, air quality improvement, heating method, etc., can solve the problems of difficult storage and transportation, volatile chlorine dioxide, unstable aqueous solution, etc.

Inactive Publication Date: 2011-07-20
SHENZHEN HUAIDE TEC DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But because chlorine dioxide is a kind of gas and its aqueous solution is unstable, chlorine dioxide is volatile, and it is easy to volatilize in gaseous form from the aqueous solution. In addition, because chlorine dioxide has the characteristics of strong oxidation and easy optical decomposition, storage It is difficult to transport, so it is still very limited as a fungicide for indoor air disinfection so far.
In fact, there is no method in the prior art that can use chlorine dioxide gas to sterilize and disinfect the air in the air simply, conveniently and efficiently.

Method used

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  • Indoor air sterilization and disinfection method

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Test place: the space volume is about 50m 3 family living room

[0029] Chemical agent: sodium bisulfate (NaHSO 4 ) and sodium chlorite (NaClO 2 ) mixed powder 7g, its weight ratio is NaHSO 4 : NaClO 2 4:3

[0030] Test method: Add 50ml of water into the flask, heat it to 40°C, add chemicals into the flask, and carry out the following chemical reaction:

[0031] 5NaHSO 4 +5NaClO 2 =5Na 2 SO 4 +4ClO 2 ↑+HCl+2H 2 o

[0032] And the compressed air of 0.1-0.3MPa is introduced to stir and bubble, so that the generated chlorine dioxide gas molecules can fully escape, and at the same time, it can also dilute the generated chlorine dioxide (ClO 2 ) gas, use a fan to blow the reaction flask mouth to the space to be sterilized and disinfected. After testing, the concentration of chlorine dioxide at the reaction flask mouth is 16-20ppm. After 30 min, sanitize the space with ClO 2 The concentration is 6-8ppm, the killing rate of Staphylococcus albus is 100%, the killi...

Embodiment 2

[0034] Test place: the space volume is about 120m 3 meeting room

[0035] Chemical agent: sodium bisulfate (NaHSO 4 ) and sodium chlorite (NaClO 2 ) mixed powder 17g, its weight ratio is NaHSO 4 : NaClO 2 4:3

[0036] Test method: Add 70ml of water into the flask, heat it to 35°C, add chemicals into the flask, and carry out the following chemical reaction:

[0037] 5NaHSO 4 +5NaClO 2 =5Na 2 SO 4 +4ClO 2 ↑+HCl+2H 2 o

[0038] And the compressed air of 0.1-0.3MPa is introduced to stir and bubble, so that the generated chlorine dioxide gas molecules can fully escape, and at the same time, it can also dilute the generated chlorine dioxide (ClO 2 ) gas, use a fan to blow the reaction flask mouth to the space to be sterilized. After testing, the concentration of chlorine dioxide at the reaction flask mouth is 17-22ppm. After 30 min, sanitize the space with ClO 2 The concentration is 6-9ppm, the killing rate of Staphylococcus albus is 100%, the killing rate of natural bac...

Embodiment 3

[0040] Test place: space volume is about 60m 3 hospital clinic

[0041] Chemical agent: sodium bisulfate (NaHSO 4 ) and sodium chlorite (NaClO 2 ) mixed powder, its weight ratio is NaHSO 4 : NaClO 2 4:3

[0042] Test Method: Chemical Reaction and Dilution and Emission of Chlorine Dioxide Gas in figure 1 Carry out in the shown air sterilizer. The following is a detailed description of the structure of this sterilizer.

[0043] see figure 1 , figure 2 , Figure 10 , the air sterilizer includes sequentially connected drug delivery unit 1, reaction unit 2, drainage and air supply unit 3, water adding unit 4, air adding unit 5, and also includes a control unit; drug delivery unit 1 includes sequentially connected drug storage bins 11, The medicament quantitative delivery device 12 and the medicament delivery device 13; the reaction unit 2 includes a reaction vessel control mechanism 21 and the reaction vessel 22 connected in sequence; the medicament delivery device 12 co...

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Abstract

The invention relates to an indoor air sterilization and disinfection method. The method comprises the following steps of: adding a sodium chlorite-containing powdery chemical agent into water to perform chemical reaction so as to continuously produce chlorine dioxide gas; and continuously diluting the chlorine dioxide gas with air until the concentration of the chlorine dioxide gas is between 10ppm and 50ppm and discharging into indoor space to keep the concentration of the chlorine dioxide gas at 5ppm to 15ppm indoors. By using the method, the indoor air is efficiently and safely sterilized and disinfected by using the molecules of the chlorine dioxide gas; and the sterilization and disinfection gas ClO2 of the method is blown into air in the form of molecular state without polluting or corroding any environment or substance.

Description

technical field [0001] The invention relates to a method for sterilizing and disinfecting indoor air, in particular to a method for using chlorine dioxide gas to sterilize and disinfect the air in an indoor space. Background technique [0002] In indoor spaces such as homes, hotels, office buildings, schools, hospitals, restaurants, KTV rooms, stations, terminal buildings, etc., the cleanliness of the air directly affects people's health, so it is necessary to regularly sterilize and disinfect the indoor environment to ensure The indoor environment is hygienic and clean to prevent occupants or the public from being harmed by poisonous and harmful gases or viruses and other pathogenic substances, which will affect their health or suffer from diseases. Existing indoor air disinfection methods mainly use sprayers to spray disinfectant or directly wipe indoor items with disinfectant; Most of the disinfectants used are peracetic acid. [0003] Chlorine dioxide (ClO 2 ) is the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L9/015C01B11/02A61L101/06A61L101/14F24F8/24
CPCF24F2003/1675F24F3/16A61L2209/111A61L9/046A61L9/05Y02A50/20F24F8/24
Inventor 何光怀何光汉周胜军谢敏李炜徐成
Owner SHENZHEN HUAIDE TEC DEV
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