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

Supercritical pearl bleaching method and device

A supercritical and supercritical extraction technology, which is applied in the field of craft jewelry, can solve the problems of clear and clean, residual pigment, and inability to extract pearl pigment, so as to improve the dissolution rate, improve work efficiency, and shorten the processing cycle.

Pending Publication Date: 2022-03-25
海南京润珍珠科技有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The supercritical carbon dioxide extraction equipment cannot completely extract the pearl pigment clearly, and some pigment will remain

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
  • Supercritical pearl bleaching method and device
  • Supercritical pearl bleaching method and device
  • Supercritical pearl bleaching method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The supercritical pearl bleaching device of the present invention comprises a carbon dioxide gas circulation loop A and a liquid circulation loop B, and the carbon dioxide gas circulation loop A is composed of a supercritical extraction tank 13, a pressure reducing valve 11, an evaporation separator 10, a booster pump 15, a carbon dioxide storage The tank 16 and the mixer 3 are connected by pipelines, and the liquid circulation circuit B is formed by connecting the supercritical extraction tank 13, the pressure reducing valve 11, the evaporation separator 10, the filter 8, the circulation pump 7 and the mixer 3 by pipelines.

[0040] The mixer 3 is respectively provided with a carbon dioxide fluid injection port, an ethanol injection port and a hydrogen peroxide injection port, and the carbon dioxide fluid injection port is connected to the carbon dioxide storage tank 16 through a carbon dioxide fluid pipe 1, and a valve 2 is arranged on the carbon dioxide fluid pipe 1, 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 discloses a supercritical pearl bleaching method and device. The method comprises the following steps: putting pearl grains into a supercritical extraction tank; injecting liquid carbon dioxide, ammonia water, hydrogen peroxide and ethanol into the mixer; the mixture is conveyed to a supercritical extraction tank, the temperature in the extraction tank is kept at 65-75 DEG C, the time is 10-15 h, and the pressure is 12-30 Mpa; conveying the fluid in the supercritical extraction tank into an evaporation separator, pressurizing and liquefying the separated carbon dioxide gas, and storing in a carbon dioxide storage tank; reducing the pressure of the supercritical extraction tank, injecting ethanol into the mixer again, conveying the ethanol into the supercritical extraction tank, covering the pearl grains in the extraction tank, and continuously keeping the temperature in the extraction tank at 65-75 DEG C; and the like. The pearl color removal only needs about 2 days, so that the pearl processing period is greatly shortened; the pearl luster cannot be damaged; the pearl processing process is basically sealed in the equipment, and poisonous and harmful chemicals are not easy to diffuse into the environment even if the poisonous and harmful chemicals are used, so that the safety of people and the environment is protected.

Description

technical field [0001] The invention belongs to the technical field of craft ornaments, and relates to a pearl bleaching technology, in particular to a supercritical pearl bleaching method and a device thereof. Background technique [0002] The vast majority of cultured pearls cannot be directly used as jewelry, because they have defects such as luster, color difference, light and dark, color difference, dark spots, blemishes, etc., and must be processed to meet the jewelry requirements. Among them, color processing to achieve consistency is a very important means of pearl processing. [0003] Pearl color treatment mainly refers to the bleaching treatment of pearls. Pearls come in a variety of colors, including those caused by biological pigments, those caused by the structure of the pearl, and those caused by pollutants. Among them, the color caused by biological pigments is the main one, and the main treatment methods are hydrogen peroxide bleaching and solvent dissoluti...

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): A44C27/00
CPCA44C27/00Y02P20/54
Inventor 李木元叶金福钱明张王海周政林志成
Owner 海南京润珍珠科技有限公司
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