Safe pure chlorine dioxide preparing apparatus and method

Abstract

The present invention relates to a device and a method for safely preparing pure chlorine dioxide gas, which belongs to the technical field of chemical engineering and technology. The device for preparing chlorine dioxide gas is provided with a vacuum system which makes a first-stage reactor, a second-stage reactor and a third-stage reactor, a gas washing transform tower, a vacuum storing tower and other systems run at normal temperature and subpressure. Air is injected into the bottom of each of the three reactors for stirring raw materials. Chlorine dioxide gas and chlorine gas generated by the first-stage and the second-stage reactors are explosionproof and isolated by adopting water seal. A gas washing converting tower is used for converting the chlorine gas into chlorine dioxide gas, and finally chlorine dioxide gas in the vacuum storing tower is pumped by a jet pump and is exhausted after being mixed with a large amount of air for sterilization. The preparing device and method can safely produce and use the chlorine dioxide gas and also has the advantages of low device investment, high production efficiency and little consumption of energy sources. The preparing device is connected with sterilizing places by pipelines to directly perform gas sterilization with high efficiency and low cost. The device can also be mounted on automobiles to form epidemic prerention vehicle for rescue and relief work.

Description

technical field [0001] The invention relates to a safe pure chlorine dioxide gas preparation device and method, belonging to the field of chemical engineering and process technology. Background technique [0002] The disinfection and sterilization performance of chlorine dioxide is in the commonly used disinfectants, the ClO required to achieve the same bactericidal effect in the same time 2 Concentration is the lowest. ClO required to kill heterotrophic bacteria 2 The concentration is only Cl 2 1 / 2 of. ClO 2 The killing effect on Escherichia coli in surface water is better than that of Cl 2 more than 5 times higher. Chlorine dioxide is more effective at killing spores than chlorine. As a strong oxidant, chlorine dioxide also has many functions such as algae removal, mud peeling, anticorrosion, mildew resistance, freshness preservation, deodorization, carcinogen degradation and bleaching, etc., and is widely used. [0003] Chlorine dioxide is the only high-efficiency...

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Problems solved by technology

[0005] Just because chlorine dioxide gas is a gas that is easy to explode and decompose when exposed to light, the developed countries that can produce chlorine dioxide in the world all produce stable aqueous solutions with a content of 2%, which is also a waste of packaging and transportation. What's more, expensive stabilizers have to be added in production, and a lot of solid citric acid has to be added in use. It is impossible to fully activate chlorine dioxide, which will affect the effect and waste resources.

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