Unlock instant, AI-driven research and patent intelligence for your innovation.

Recyclable and renewable utilization process of etching liquid medicine

An etching potion and process technology, which is applied in the field of etching potion recyclable and recyclable processes, can solve the problems of reducing exhaust gas etching potion and the like, and achieve the effects of improving utilization rate and reducing environmental pollution.

Pending Publication Date: 2021-10-29
天水华洋电子科技股份有限公司
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of this, this application provides a recyclable and renewable utilization process of etching solution, which solves the problem of recyclable etching solution, and at the same time reduces waste gas etching solution, metal ions carried out, and etching solution waste gas solution can be recycled multiple times , to reduce the problem of environmental pollution

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
  • Recyclable and renewable utilization process of etching liquid medicine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with specific examples.

[0014] A process for recyclable and renewable utilization of etching solution, comprising the steps of:

[0015] 1) The etching potion is electrolyzed for the first time to obtain high-content copper and low-content copper. The high-content copper is sold directly, and the low-content copper is recycled again;

[0016] 2) Chlorine gas is produced during the electrolysis of the etching potion. After the electrolysis is completed, sodium hydroxide is added to the waste liquid generated to generate sodium hypochlorite;

[0017] 3) reclaim the liquid of the sodium hypochlorite generated in step 2, and sell;

[0018] 4) The liquid of the sodium hypochlorite generated in step 2 can also be used for waste water treatment.

[0019] The process of the invention...

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 the technical field of acid etching liquid, in particular to a recyclable and renewable utilization process of an etching liquid medicine, which comprises the following steps: the etching liquid medicine is electrolyzed for the first time to obtain high-content copper and low-content copper, the high-content copper is directly sold, and the low-content copper is recycled; chlorine is produced in the electrolysis process of the etching liquid medicine, sodium hydroxide is added into generated waste liquid after electrolysis is completed to produce sodium hypochlorite; liquid of the sodium hypochlorite produced in the step 2 is recycled, and sold; and the liquid of the sodium hypochlorite produced in the step 2 can be used for wastewater treatment. The recyclable and renewable utilization process not only recycle low-concentration acid etching liquid, but also recycle other liquid medicines for other utilization, thereby achieving the purpose of recycling the etching liquid medicine.

Description

technical field [0001] The utility invention relates to the technical field of acid etching solution, in particular to a recyclable and renewable utilization process of etching solution. Background technique [0002] Etching solution is a raw material for copper engraving. In the production process of printed circuit boards, the recovery and regeneration of acidic copper chloride etching solution has always plagued printed circuit board enterprises. The non-renewable acidic copper chloride etching solution contains about 100 grams to 130 grams of copper per liter, only Guangdong This kind of waste etching solution produced every month in the province contains thousands of tons of copper. If this kind of metal copper can be recovered and the waste etching solution can be recycled and used, it must have very important economic benefits and environmental protection value. Among them, the etching process belongs to the direct process of copper consumption of circuit boards. The...

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): C25C1/12C25B1/26C25B1/50C23F1/46
CPCC25C1/12C25B1/26C25B1/50C23F1/46Y02P10/20
Inventor 康亮康小明孙飞鹏马文龙
Owner 天水华洋电子科技股份有限公司