Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A method for recycling sheep shearing dyeing board waste liquid

A sheep shearing and dyeing board technology, which is applied in the field of tanning, can solve the problems of low dye utilization rate of dyed boards, low blackness of finished products, and dye residues, etc., so as to reduce a large amount of waste of dyes, full color, and high color fastness. high effect

Active Publication Date: 2021-03-16
隆丰革乐美时尚有限公司
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The biggest problem in the traditional process is that the dyeing process is complicated, the water consumption is large, and the dyeing wastewater is not easy to treat; and the utilization rate of the dye on the dyeing board is low, and a large amount of dye remains in the bath solution, which leads to the increase of the chroma of the wastewater, and after the dyeing, the finished product is black. degree is not high

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A method for recycling sheep shearing dyed board waste liquid, comprising the following steps:

[0026] 1) Put the skin into the inclined drum, add the bath liquid according to the liquid ratio of 1:12, and add the mixture of 0.5g / l cleaning agent, anionic surfactant and lipid tanning agent at a temperature of 40°C, rotate for 60 minutes, and add 0.5g / L penetrant phenolic condensate, rotate for 20 minutes, add acid black dye and other black dyes, rotate for 60 minutes, then add 0.5g / L formic acid, rotate for 60 minutes, add 1g / L Tannin extract, rotate for 60 minutes , add 0.5g / l mixture of fatliquor phosphate ester and grease, rotate for 30 minutes, then add 0.5g / L formic acid three times, rotate for 20 minutes respectively, and finally adjust the pH of the bath solution to about 3.5.

[0027] 2) Discharge the waste liquid from the dyeing plate into the circulation pool and collect the waste liquid. Use ammonia water to adjust the pH of the dyed plate waste liquid to ...

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 relates to a shorn sheepskin plate-dyeing waste liquor recycling method. The shorn sheepskin plate-dyeing waste liquor recycling method comprises the following steps that (1) sheepskin is placed into a rotary drum, a bath solution is added into the rotary drum according to the liquor ratio of 1:12, the temperature is maintained at 40 DEG C, a mixture of a cleaning agent, namely an anionic surfactant, and a lipid tanning agent is added into the rotary drum, a penetrant, namely a phenolic condensation compound, is added into the rotary drum after the rotary drum rotates for a period of time, and dye used for plate dyeing is added after the rotary drum rotates for a period of time; (2) water at the temperature of 40 DEG C is added into the rotary drum according to the liquor ratio of 1:12 after the rotary drum rotates for a period of time, dye used for plate dyeing is added into the rotary drum, an aluminum-containing retanning agent is added after the rotary drum rotates for a period of time, and an aluminum-containing tanning agent is added after the rotary drum rotates for a period of time; (3) the pH of waste liquor generated in step (1) is regulated to 9 with ammonium hydroxide, and then the waste liquor is returned to be use as a solution in step (1); (4) water at the temperature of 65 DEG C is added into the rotary drum according to the liquor ratio of 1:12, dye used for fur dyeing is added into the rotary drum, and a deepening agent, namely alkyl phosphate, and a leveling agent, namely anionic surfactant slat, are added into the rotary drum after the rotary drum rotates for a period of time; and (5) aftertreatment is conducted. By adoption of the shorn sheepskin plate-dyeing waste liquor recycling method, the problem of severe dye waste is solved, andthe cost is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of tanning, and in particular relates to a method for recycling waste liquid of sheep shearing dyeing boards. Background technique [0002] The normal dyeing process of black uppers is: dyeing board - retanning - dyeing wool. The biggest problem in the traditional process is that the dyeing process is complicated, the water consumption is large, and the dyeing wastewater is not easy to treat; and the utilization rate of the dye on the dyeing board is low, and a large amount of dye remains in the bath solution, which leads to the increase of the chroma of the wastewater, and after the dyeing, the finished product is black. The degree is not high. Contents of the invention [0003] The purpose of the present invention is to provide a method for recycling the waste liquid of sheep shearling dyeing boards, so as to solve the above problems. The technical scheme adopted in the present invention is: [0004] ...

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 Patents(China)
IPC IPC(8): C14C15/00C14C3/08C14C3/06
CPCC14C3/06C14C3/08C14C15/00
Inventor 仲济德黄招贾兰英赵广付
Owner 隆丰革乐美时尚有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com