Check patentability & draft patents in minutes with Patsnap Eureka AI!

Method for recycling copper salt from fluorine fine chemical production device

A technology of fine chemical industry and production equipment, applied in the field of copper salt recovery, which can solve the problems of small market demand, inability to match the amount of solid slag produced, and the formation of copper-clad iron

Active Publication Date: 2017-04-05
太仓中化环保化工有限公司
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the above-mentioned waste residues are generally treated by purification process to produce cuprous chloride or cupric chloride products, but the market demand for the above two types of products is small and cannot match the amount of the above-mentioned solid residues produced
For the process of reducing cuprous chloride to copper, iron is used as a reducing agent in the existing technology. When iron reduces cuprous chloride, the purity of the copper obtained is not high, and it is easy to form copper-clad iron. , with iron impurities

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

[0037] The mass content of cuprous chloride 80%, the mass content of cupric chloride 10%, the mass content of copper powder 5%, the mass content of cupric oxide 2% and The mass content of DMF is 3%.

[0038] In the pretreatment reactor, the above-mentioned copper salt was prepared with water into a solution with a cuprous chloride concentration of 0.20 mol / L, and the preparation amount was 2000 mL, which was set aside.

[0039] The preparation concentration is the sodium hydroxide solution of 11.2mol / L, and preparation volume is 1000mL, set aside.

[0040] Prepare a formaldehyde solution with a concentration of 4.16mol / L in a volume of 1000mL for use.

[0041] The recovery method of the present embodiment comprises the following steps:

[0042] (1) Pump 200mL of copper salt solution from the pretreatment reactor into the main reactor, start stirring and heating, the stirring speed is controlled at 150rpm, when heated to 70°C, drop 30mL of sodium hydroxide solution into the m...

Embodiment 2

[0047] In this example, except that in step (1), the continuous reaction time is 150 min, the others are the same as in Example 1. The purity of the finally obtained copper powder is 99.10%, the average particle size is 33.7 μm, and the yield is 98.53%.

Embodiment 3

[0049] The mass content of cuprous chloride 80%, the mass content of cupric chloride 10%, the mass content of copper powder 5%, the mass content of cupric oxide 2% and The mass content of DMF is 3%.

[0050] In the pretreatment reactor, the above-mentioned copper salt is prepared with water into a solution with a concentration of cuprous chloride of 0.40 mol / L, and the preparation amount is 1000 mL, which is set aside.

[0051] The preparation concentration is the sodium hydroxide solution of 11.2mol / L, and preparation volume is 1000mL, set aside.

[0052] Prepare a formaldehyde solution with a concentration of 8.32mol / L, and the preparation volume is 1000mL for use.

[0053] The recovery method of the present embodiment comprises the following steps:

[0054](1) Pump 100mL of copper salt solution from the pretreatment reactor into the main reactor, start stirring and heating, the stirring speed is controlled at 150rpm, when heated to 70°C, drop 30mL of sodium hydroxide solu...

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

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention relates to a method for recycling copper salt from a fluorine fine chemical production device. The method comprises the following steps: 1, soaking the copper salt from the fluorine fine chemical production device with water, then adding an alkaline substance and a reducing agent, stirring, reacting, and after reaction is over, obtaining a copper-containing reactant solution, wherein the mass content of cuprous chloride in the copper salt from the fluorine fine chemical production device is larger than or equal to 30%, and the reducing agent is one or a combination of hydrazine hydrate, sodium hypophosphite, formaldehyde, potassium borohydride and sodium borohydride; and 2, carrying out solid-liquid separation on the copper-containing reactant solution obtained in the step 1 so as to obtain solid copper, and drying the solid copper so as to obtain copper powder. After the copper salt from the fluorine fine chemical production device is treated by the recycling method, the copper powder of which the purity is higher than or equal to 99.0% can be recycled, and the demands of the fluorine fine chemical production device and other copper powder using technologies are met. The mass index of the copper powder can meet the requirement of the electrolytic copper powder table GB / T5246-2007 on the mass index of the copper powder.

Description

technical field [0001] The invention relates to a method for recovering copper salt from a fluorine fine chemical production device. Background technique [0002] In the production of fluorine fine chemicals, fluorine-containing chloroalkanes are generally reacted with copper powder in the presence of catalysts and solvents, and fluorine-containing olefins are produced through the removal of chlorine. Part of the blowing agent production process adopts the above-mentioned route. [0003] For example, HFO-1336mzz is prepared by using HCFC-123 as the raw material synthesis process, and copper powder is used to participate in the reaction. When the product is obtained, a large amount of cuprous chloride solid residue containing copper powder, copper chloride, and DMF solvent will be produced. [0004] At present, the above-mentioned waste slag can generally be processed into cuprous chloride or cupric chloride products by purification process, but the market demand for the abo...

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): C22B7/00C22B15/00
CPCC22B7/006C22B15/0089Y02P10/20
Inventor 马腾飞
Owner 太仓中化环保化工有限公司
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com