Method for soda recovery and color removal after mercerization in dyeing and printing field and apparatus thereof

A color alkali and mercerizing technology, applied in the fields of printing and dyeing, textile printing and dyeing, can solve the problems of waste of resources, pollution of the environment, consumption of large sulfuric acid, etc., and achieve the effects of energy saving, low energy consumption, and reduction of processing costs

Inactive Publication Date: 2009-02-18
LUTAI TEXTILE
View PDF0 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because these spent alkali solutions are colored, they have not been recycled, resulting in the consumption of a large amount of sulfuric acid in the subsequent sewage treatment process, which not only pollutes the environment but also leads to a waste of resources

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for soda recovery and color removal after mercerization in dyeing and printing field and apparatus thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] In the embodiment shown in Figure 1: the device contains 3 filters 1 and 2 evaporators. The three filters 1 are arranged in a straight line according to the order of filtration accuracy from low to high. The adjacent filters 1 are connected end to end, and the outlet of the filter 1 at the end is connected to the first evaporator 2, and the outlet of the evaporator 2 is connected to the first evaporator 2. The second evaporator 2, and above-mentioned two evaporators 2 are all equipped with a liquid level gauge 7 and a proportional valve 8 controlled by it, the outlet of the second evaporator 2 is connected to the container 3, and the outlet of the jet pump 4 is communicated with the container 3, The aeration pipe 5 is immersed in the color alkali solution, and the outlet of the container 3 is connected with a filter 6 .

[0017] When working: the color alkali solution after mercerizing is filtered by three filters 1 and evaporated and concentrated by two evaporators 2 a...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a mercerization alkali recovery and color removing method and the device in dyeing field. The invention is characterized in that the method comprises the following steps: (1) filtering, (2) evaporating, (3) color removing and (4) filtering. In the color removing step, hydrogen peroxide is sprayed into a container with alkali liquid through a jet pump, and at the same time, an aeration pipe is equipped to accelerate the reaction until the alkali liquid becomes clear without any color. The device comprises a plurality of filters, a plurality of evaporators, a container for accommodating the filtered and condensed alkali liquid, a jet pump for spraying the hydrogen peroxide into the container, an aeration pipe for accelerating the reaction and a filter for removing the impurity in the liquid. Each of the evaporator is provided with a fluid level gauge and a proportional valve controlled by the evaporator. After the mercerization alkali liquid is filtered by the filters and condensed by the evaporator, the alkali liquid is stored in the container. The outlet of the jet pump is communicated with the container. The aeration pipe is emerged into the alkali liquid. The outlet of the container is provided with the filter. After the alkali is transferred into the colorless and clear alkali liquid, the alkali can be directly reused, and therefore the source can be saved.

Description

technical field [0001] The invention provides a method and device for recovering and removing color alkali after mercerizing in the field of printing and dyeing, and belongs to the technical field of textile printing and dyeing. Background technique [0002] In the process of mercerizing in the printing and dyeing industry, a large amount of liquid caustic soda is consumed, and a large amount of spent caustic soda solution is also produced. Because these spent alkali solutions are colored, they have not been recycled, resulting in the consumption of a large amount of sulfuric acid in the subsequent sewage treatment process, which not only pollutes the environment but also leads to a waste of resources. Contents of the invention [0003] The object of the present invention is to provide a method and device for retrieving and removing color base after mercerizing in the printing and dyeing field, which solves the above problems, improves resource utilization, and reduces pol...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/10C02F1/04C02F1/72
Inventor 陈明张建祥吕文泉于永彬侯大勇
Owner LUTAI TEXTILE
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap