Method for separating chlorine from chlorine dioxide solution

Abstract

The invention discloses a method for separating chlorine from a chlorine dioxide solution, and relates to a treatment technology of a chemical preparation containing specific impurities, wherein the method comprises the steps: introducing chlorine dioxide gas containing chlorine into deionized water, adding hydrochloric acid and sodium chloride, carrying out reduced-pressure suction filtration, and preparing a chlorine dioxide / EDTA complex solution; preparing a chlorine dioxide / PVP complex solution and separating out part of chlorine in the chlorine dioxide / PVP complex solution; mixing the twosolutions; and adding sodium chloride and then carrying out reduced-pressure suction filtration. Sodium chloride or hydrochloric acid is added in specific steps in the preparation process of the chlorine dioxide solution, dissolved or residual chlorine in the solution is reduced by controlling the solubility of chlorine and a suction filtration mode, and meanwhile, the method provided by the invention can be suitable for separation of low-concentration chlorine by virtue of a proportional relation among components specified by a specific algorithm; the finally obtained chlorine removal rate can reach 90% or above, and the obtained product can be safely applied to pet skin disinfection and sterilization.

Description

technical field [0001] The invention relates to a chemical preparation treatment technology containing specific impurities, in particular to a method for separating chlorine gas from chlorine dioxide solution. Background technique [0002] Chlorine dioxide is one of the most common and commonly used main components of disinfection products in daily life. It is more and more popular among consumers due to its green, non-toxic, good killing effect, natural degradation without residue, and not easy to produce microbial resistance. Welcome. [0003] In the pet industry, pet skin disinfection is particularly important because pets are prone to skin diseases and cross-infection. [0004] In the current pet industry, due to factors such as cost control, 84 disinfectant is usually used for environmental disinfection. Even if chlorine dioxide is used for pet skin disinfection, it is usually used to prepare water with chlorine dioxide disinfection tablets. The disinfectant prepared i...

AI Technical Summary

Problems solved by technology

[0006] The traditional method of separating chlorine gas in chlorine dioxide solution is usually to prepare a chlorine dioxide container containing chlorine gas in a liquid environment, and then remove the chlorine gas by distillation or other methods, but this method is only applicable to (accounting for more than 12% of the total mass of solute) chlorine dioxide solution, and the removal rate of this type of method for removing chlorine is only about 70%, and the remaining chlorine cannot be further separated by continuing to adopt this method, and the final obtained two There is still a large amount of chlorine gas in chlorine oxide products

Although such products can already be used for disinfection in daily life, when they are applied to pet skin surface disinfection, they will cause serious irritation to pet skin and irritate pet respiratory tract, wherein the organic chlorides formed during use are more likely to Toxic and side effects on pets, endangering pet health