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Apparatus and method for bleaching floccules by using gaseous chlorine dioxide

A chlorine dioxide, gas-phase bleaching technology, applied in the direction of chlorine dioxide, chlorine oxide, bleaching products, etc., can solve the problems of high purity of chlorine dioxide, high energy consumption, high pollution, etc., and achieve high whiteness stability and low energy consumption. Low, high-purity effect

Inactive Publication Date: 2016-05-11
BEIJING PENGSHENG TIANXIAN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The device and method of the present invention use hydroxyl radical active oxygen with strong oxidizability to prepare gaseous chlorine dioxide, the reaction conditions are mild, energy consumption is low, and the purity of the prepared chlorine dioxide is high, reaching more than 88%; Bleaching fabrics meets the requirements of national policies, solves the problems of high pollution and high energy consumption in liquid bleaching, and achieves remarkable bleaching effects and good environmental and economic benefits

Method used

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  • Apparatus and method for bleaching floccules by using gaseous chlorine dioxide

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Embodiment 1

[0041] What embodiment 1 represented is the device of gas phase chlorine dioxide bleaching floe of the present invention.

[0042] combined with figure 1 A device for bleaching flocs with gaseous chlorine dioxide, comprising a chlorine dioxide generating system and a gaseous bleaching system; the chlorine dioxide generating system includes a hydroxyl radical active oxygen pharmaceutical machine 1, a medicament tank 2, and a mixed medicament tank 3. Hydrochloric acid tank 4, chlorine dioxide generator 5, chlorine dioxide storage tank 6; 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 is connected to 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 Inlet 5-1, the outlet 4-1 ...

Embodiment 2

[0045] The present embodiment carries out bleaching treatment to cotton fiber. specifically is:

[0046] A method for bleaching cotton fibers with gaseous chlorine dioxide, said method comprising a chlorine dioxide generating step and a gaseous bleaching step;

[0047] Wherein, the chlorine dioxide generating step includes: the hydroxyl radical active oxygen pharmaceutical machine 1 prepares the hydroxyl radical active oxygen medicine, stores the medicine in the medicine tank 2, and passes the medicine in the medicine tank according to the required amount. Enter mixed agent tank 3, add sodium chlorate solid in mixed agent tank 3 simultaneously, make the concentration of sodium chlorate after dissolving be about 400g / L; 5, and adding concentration therein is the sulfuric acid of 4mol / L, is warming up to 40 ℃, after reacting for two hours, obtains gas-phase chlorine dioxide, and the chlorine dioxide of gained is stored in the chlorine dioxide storage tank 6;

[0048] The gas-p...

Embodiment 3

[0050] The present embodiment carries out bleaching treatment to bamboo floc. specifically is:

[0051] A method for bleaching bamboo flocs with gas-phase chlorine dioxide, said method comprising a chlorine dioxide generation step and a gas-phase bleaching step;

[0052] Wherein, the chlorine dioxide generating step includes: the hydroxyl radical active oxygen pharmaceutical machine 1 prepares the hydroxyl radical active oxygen medicine, stores the medicine in the medicine tank 2, and passes the medicine in the medicine tank according to the required amount. Enter the mixed medicament tank 3, and add sodium chlorate solid in the mixed medicament tank 3 simultaneously, make the concentration of sodium chlorate after dissolving be about 500g / L; The mixed liquid mixed uniformly in the mixed medicament tank is squeezed into the chlorine dioxide generator 5, and adding concentration therein is the sulfuric acid of 4mol / L, is warming up to 40 ℃, after reacting for two hours, obtain...

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Abstract

An apparatus and method for bleaching floccules by using gaseous chlorine dioxide is provided; the apparatus comprises a chlorine dioxide generating system and a gas bleaching system; the method comprises chlorine dioxide generation and gas bleaching steps. The apparatus and method use the hydroxyl radical active oxygen of high oxidability to prepare gaseous chlorine dioxide, reaction conditions are mild, energy consumption is low, the prepared chlorine dioxide is high in purity; the gaseous chlorine dioxide is used in bleaching, and the high-purity chlorine dioxide can shorten the bleaching time and improve bleaching whiteness, so that a product is yellowing resistant, high in whiteness stability and low in fiber damage degree, meets the requirements of national policies and has good environmental and economic benefits.

Description

technical field [0001] The invention belongs to the field of floc pretreatment, and in particular relates to a device for bleaching flocs with gas-phase chlorine dioxide and a method for bleaching flocs with gas-phase chlorine dioxide. Background technique [0002] In recent years, with the improvement of living standards and the rise of environmental protection calls, people's demand for environmentally friendly natural fibers is increasing. As a natural renewable fiber, cotton products are more and more favored by consumers. Cotton is one of the most important crops in the world, with large output and low production cost. my country is one of the major cotton-producing countries in the world, and its cotton output has entered the forefront of the world. Cotton has a wide range of uses, and cotton fibers can be made into fabrics of different specifications, thereby making all kinds of clothing, furniture, bedding and industrial products. Cotton fiber is naturally crimped a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06L3/08C01B11/02D06L4/24
CPCC01B11/025
Inventor 杜俊琪
Owner BEIJING PENGSHENG TIANXIAN TECH CO LTD
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