Chlorine dioxide gas generating apparatus

Abstract

The invention relates to a chlorine dioxide gas generating device that includes a reactor, gas washing device and air aeration head. Under the condition of passing hot air into reactor through air aeration head, the sodium chlorate solution would take reaction with hydrochloric acid to generate mixture gas of chlorine and chlorine dioxide. CPVC material filled with sodium chlorite solid is installed in gas washing device, which is used to transfer chlorine to chlorine dioxide to gain high purity chlorine dioxide gas. The gas washing device is multilevel structure that installs detonation separating board between gas washing device and reactor. The invention has high yield of chlorine dioxide, and the purity could reach 98%, yield could reach 95%. The high purity chlorine dioxide could be used for sterilization.

Description

technical field [0001] The invention relates to a chlorine dioxide gas generating device, in particular to a device for obtaining high-purity chlorine dioxide gas by using sodium chlorate to react with hydrochloric acid and washing gas with sodium chlorite. The generating device of the present invention is suitable for sterilization and disinfection of space environments such as vegetables, fruits, grain reserves and supermarkets. Background technique [0002] Chlorine dioxide is a broad-spectrum, high-efficiency, and non-toxic bactericidal disinfectant. It has the advantages of broad-spectrum sterilization, low effective concentration, fast action speed, colorless, odorless, non-toxic, and safe to use. It is widely used as a bactericidal disinfectant. Anti-odor and anti-fungal agents, food preservatives, and water purifiers are used in water treatment, pulp bleaching, food processing, medical care, air purification, sterilization and preservation of vegetables and fruits, a...

AI Technical Summary

Problems solved by technology

But there are also obvious disadvantages: one is that the chlorine gas produced accounts for a large proportion, while chlorine dioxide only accounts for one-third, and the purity of chlorine dioxide is low; the other is that the conversion rate of sodium chlorate is low, and chlorine dioxide The yield is less than 40%, a large amount of unconverted raw materials and auxiliary materials are discharged with the waste liquid, and the reaction cost increases; the third is that the reaction waste liquid containing a large amount of sodium chlorate and sodium chloride has not been properly treated so far, and the chlorine dioxide in the reaction waste liquid The residual concentration is relatively high, causing certain pollution to the environment

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