A device and a method for bleaching waste textiles with gas phase chlorine dioxide

A technology for waste textiles and chlorine dioxide, which is applied to a device for bleaching waste textiles with gaseous chlorine dioxide and the field of bleaching waste textiles with gaseous chlorine dioxide. The effect of reducing the amount of wastewater treatment, reducing the degree of damage, and shortening the bleaching time

Active Publication Date: 2016-04-27
BEIJING PENGSHENG TIANXIAN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, the technology of using chlorine dioxide bleaching at home and abroad usually uses chlorine dioxide solution, which will increase the amount of washing wastewater, and the bleaching time will be longer, which not only increases the cost, but also wastes energy, which is not conducive to energy saving and environmental protection.

Method used

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  • A device and a method for bleaching waste textiles with gas phase chlorine dioxide

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Embodiment 1

[0041] What embodiment 1 represented is the device for bleaching waste and used textiles with gaseous chlorine dioxide of the present invention.

[0042] combined with figure 1 , a device for bleaching waste textiles with gaseous chlorine dioxide, comprising a chlorine dioxide generating system and a gaseous bleaching system; wherein, the chlorine dioxide generating system includes a hydroxyl radical active oxygen pharmaceutical machine 1, a chemical tank 2, a mixed chemical Tank 3, hydrochloric acid tank 4, chlorine dioxide generator 5, chlorine dioxide storage tank 6g; the drug outlet 1-1 of the hydroxyl radical active oxygen pharmaceutical machine is connected to the inlet 2-1 of the drug tank, and the outlet 2-2 of the drug tank Connect the first inlet 3-1 of the mixed medicament tank, the described medicament tank also includes the second inlet 3-2 for feeding sodium chlorate, the outlet 3-3 of the mixed medicament tank is connected to the first chlorine dioxide generator...

Embodiment 2

[0044] In this embodiment, the waste clothes are bleached. specifically is:

[0045] A method for bleaching waste and used clothes with gas-phase chlorine dioxide, the method comprising a chlorine dioxide generation step and a gas-phase bleaching step; wherein, the chlorine dioxide generation step includes: hydroxyl radical active oxygen pharmaceutical machine 1 preparation Hydroxyl radical active oxygen agent, the agent is stored in the agent tank 2, the agent in the agent tank is passed into the mixed agent tank 3 according to the required amount, and sodium chlorate solid is added to the mixed agent tank 3 at the same time, so that after dissolving The concentration of sodium chlorate is 400g / L; the mixed liquid mixed evenly in the mixed agent tank is poured into the chlorine dioxide generator 5, and sulfuric acid with a concentration of 4mol / L is added thereto, the temperature is raised to 60°C, and the reaction is performed for two hours Finally, gaseous chlorine dioxide...

Embodiment 3

[0047] A method for bleaching waste textiles with gas-phase chlorine dioxide, the method comprising a chlorine dioxide generation step and a gas-phase bleaching step; wherein, the chlorine dioxide generation step includes: hydroxyl radical active oxygen pharmaceutical machine 1 to produce hydroxyl Free radical active oxygen agent, the agent is stored in the agent tank 2, the agent in the agent tank is passed into the mixed agent tank 3 according to the required amount, and sodium chlorate solid is added to the mixed agent tank 3 at the same time, so that the dissolved chlorine The concentration of sodium nitrate is 400g / L; the mixed liquid mixed evenly in the mixed agent tank is poured into the chlorine dioxide generator 5, and sulfuric acid with a concentration of 4mol / L is added thereinto, the temperature is raised to 60°C, and after two hours of reaction , to obtain gaseous chlorine dioxide, which is stored in 6 g of chlorine dioxide storage tanks; the gaseous phase bleachin...

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Abstract

The invention provides a device and a method for bleaching waste textiles with gas phase chlorine dioxide. The device for bleaching waste textiles with gas phase chlorine dioxide comprises a chlorine dioxide generating system and a gas phase bleaching system. The method for bleaching waste textiles with gas phase chlorine dioxide comprises a chlorine dioxide generating step and a gas phase bleaching step. Hydroxyl radical active oxygen with strong oxidizing property is used for preparing chlorine dioxide, and the reaction condition is moderate, the energy consumption is low and the prepared chlorine dioxide is high in purity; when waste textiles are bleached by using gas phase chlorine dioxide, the high purity chlorine dioxide can reduce bleaching time, increase the whiteness of bleaching, prevent yellowing of products, and guarantee high whiteness stability and low degree of damage to textiles; the device and the method can bring favorable environmental and economical benefits.

Description

technical field [0001] The invention belongs to the field of pretreatment of waste textiles, and in particular relates to a device for bleaching waste textiles with gas-phase chlorine dioxide and a method for bleaching waste textiles with gas-phase chlorine dioxide. Background technique [0002] In recent years, with the improvement of people's living standards, the use cycle of textiles has been greatly shortened, and the demand for textile fibers has grown rapidly. The contradiction between the supply and demand of textile raw materials derived from this has directly led to the increase in the price of textile raw materials year after year, affecting the survival and development of textile enterprises. development and further improvement of people's living standards. At the same time, there are as many as 30 million tons of waste textiles in the world every year. They are rarely recycled as waste resources, but are directly buried or incinerated. Because synthetic chemica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06B3/02D06B23/20D06L3/08D06L4/24
Inventor 杜俊琪
Owner BEIJING PENGSHENG TIANXIAN TECH CO LTD
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