System and method for generating chlorine dioxide

A chlorine dioxide and compound technology, applied in the direction of chlorine dioxide, chlorine oxide, etc., can solve the problems of shortened storage period, loss of sealing, foil rupture, etc., and achieve the effect of eliminating the danger of explosion and preventing accumulation

Active Publication Date: 2015-01-07
SIPKA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This results in a shortened shelf life unless adequate measures are taken such as providing an air-tight sealing foil to prevent contact with ambient moisture or water
But even with said seal, the foil tends to crack and lose its seal after months of storage

Method used

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  • System and method for generating chlorine dioxide
  • System and method for generating chlorine dioxide
  • System and method for generating chlorine dioxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0067] Suitable surfactants include those that do not react with or interfere with the release of chlorine dioxide. Anionic surfactants are generally suitable for use in the solid compositions described herein because most of them do not react with or interfere with chlorine dioxide release. Examples include, but are not limited to, SLS (sodium lauryl sulfate), sodium lauryl sulfate, alkyl sulfonates such as 1-pentanesulfonate sodium salt monohydrate, 1-hexanesulfonate sodium salt Monohydrate, 1-heptane sulfonate sodium salt monohydrate, 1-octane sulfonate sodium salt, 1-decane sulfonate sodium salt, sodium dodecyl benzene sulfonate, linear alkyl benzene Sulfonate, sodium alkyl naphthalene sulfonate. Suitable nonionic surfactants include alkyl poly(ethylene oxide) and more specifically polyethylene oxide. Cationic and amphoteric surfactants are also suitable for use in combination with the exemplary embodiments of the invention.

[0068] Other embodiments of CDG compositions s...

Embodiment 1

[0114] Example 1. The CDG composition (in granular form) is prepared and then dried at 90-150°C. Moisture content <1% by weight. The CDG composition contains (wt%):

[0115] Sodium chlorite 35%

[0116] Anhydrous sodium bisulfate 40%

[0117] Methyl hydroxypropyl methylcellulose 15%

[0118] Sodium polyacrylate 10%

[0119] -Put 2 grams of the CDG composition into the tank 100, and then cap the tank. After putting the tank into 1 liter of water, 190ppm of free ClO is quickly generated in the solution 2 , Measured by an ultraviolet spectrophotometer at 360nm. ClO 2 The pH of the solution was 6.4.

[0120] · Put 2 grams of the CDG composition into the tank 100 inside. After putting the tank into 1 liter of 10% ethanol solution, 172ppm of free ClO is quickly generated in the solution 2 , Measured by an ultraviolet spectrophotometer at 360nm.

[0121] · Put 2 grams of the CDG composition into the tank 100 inside. After putting the tank into 1 liter of 10% isopropyl solution, 160ppm of ...

Embodiment 2

[0124] Example 2. A CDG composition containing an anionic surfactant is prepared and then dried at 90-150°C. The CDG composition contains (wt%):

[0125] Sodium chlorite 35%

[0126] Anhydrous sodium bisulfate 40%

[0127] Methylhydroxypropyl methylcellulose 13%

[0128] Sodium polyacrylate 10%

[0129] Sodium Lauryl Sulfate (SLS or SDS) 2%

[0130] -Put 2 grams of the CDG composition into the tank 100, and then cap the tank. After putting the tank into 1 liter of water, it quickly produced 186ppm free ClO 2 The soap-like solution of the product was measured at 360nm by an ultraviolet spectrophotometer. ClO 2 The pH of the solution is 6.5.

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Abstract

Some systems for generating chlorine dioxide include a chlorine-dioxide generating composition comprising an alkali chlorite salt, acid, cellulose, a super absorbent, and optionally a surfactant. Systems disclosed herein are able to generate chlorine-dioxide gas, chlorine-dioxide solution, and chlorine-dioxide solution with surfactants. Some systems for generating chlorine dioxide include a canister containing a chlorine-dioxide generating composition. The canister includes at least one porous region that places an exterior of the canister in fluidic communication with an interior of the canister. The porous region, which in some embodiments, is realized as a mesh, is characterized by a size in a range of about 20 mesh to about 325 mesh.

Description

Technical field [0001] The present invention relates generally to chlorine dioxide, and the present invention more specifically relates to systems and methods for generating gases and solutions containing free chlorine dioxide. technical background [0002] Chlorine dioxide (ClO 2 ) Are highly reactive yellow-green gas molecules. It is highly soluble in water, ClO 2 Used in various applications, such as pulp bleaching, as a bactericide, virucide, algaecide, fungicide, effective antimicrobial agent and selective oxidant. Even at very low concentrations and a wide range of pH, chlorine dioxide is still an effective antimicrobial agent. [0003] In recent years, gaseous ClO 2 It was successfully used in the area purification of the Hart Senate office building and Brentwood postal sorting facility contaminated by B.anthracis in Washington, DC. ClO 2 The gas effectively reduces the spores of rod-shaped bacteria on paper, plastic, epoxy-coated stainless steel and wood surfaces. [0004]...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B11/02
CPCC01B11/024
Inventor J·A·坦加拉吉
Owner SIPKA
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