Regenerated cotton ozone decolorization method and ozone generating device used in the method

Abstract

The invention discloses a regenerated cotton ozone decolorization method and an ozone generating device used in the method. The regenerated cotton ozone decolorization method includes: firstly regenerated cotton to be decolorized is put into a sealing chamber; then ozone gas and wet gas generated by the ozone generating device are led into the sealing chamber containing the regenerated cotton to cause the ozone and the wet gas to be evenly mixed in the sealing chamber; secondly decolorization is carried out; finally tail gas is cleared, and the tail gas after decolorization is recovered by a tail gas recovery device. The ozone generating device of the invention comprises an ozone generating unit, an internal cooling recirculation system, an external cooling recirculation system, a vapor atomizing apparatus and a water tank; wherein the internal cooling recirculation system and the external cooling recirculation system are respectively connected with the ozone generating device, and the vapor atomizing apparatus is connected with the water tank. By the regenerated cotton ozone decolorization method and the ozone generating device applied to the method, efficient and environmentally friendly decolorization can be realized.

Description

technical field [0001] The present invention relates to a decolorization method and device for regenerated cotton, more specifically, a method for decolorizing regenerated cotton by exposing it to an environment of ozone and moisture and a device for generating ozone and moisture in the method Ozone generator. Background technique [0002] At present, the decolorization of regenerated cotton usually adopts the decolorization method of chemical oxidation. A certain amount of water is put in the decolorization pool, the regenerated cotton to be decolorized is soaked in the decolorization pool, and oxidants such as chlorine, sodium hypochlorite, hydrogen peroxide, etc. Put water into the decolorization tank, mix evenly with the water in the decolorization tank, and stir the product to be decolorized. However, this decolorization method will use a large amount of chlorine gas, and will produce a large amount of chlorine-containing wastewater after decolorization. For example, c...

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Problems solved by technology

However, this decolorization method will use a large amount of chlorine gas, and will produce a large amount of chlorine-containing wastewater after decolorization. For example, chlorine gas needs to be discharged for 8 hours and 2 tons of chlorine water are discharged when decolorization is completed for each ton of cloth. Since chlorine gas is a toxic gas, the discharged Chlorine-containing wastewater directly threatens the life of surrounding plants, and at the same time directly pollutes groundwater and damages the surrounding ecological environment. The decolorized regenerated cotton is also harmful to human skin; because this method will use a large amount of chlorine and water , and occupies a large area, such as decoloring per ton of cloth needs to occupy an area of ​​100m2, so it will increase the cost; and this decolorization method takes a long time and has low efficiency. It takes 24 hours to decolorize tons of cloth. This method will also be affected by the weather when decolorizing, and it cannot be carried out in cloudy and rainy days or when there is insufficient light. Therefore, the use of this method is subject to certain restrictions.

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