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

A method for preparing lead-acid battery repairing supplementary liquid by utilizing sulfuric acid waste liquid

A lead-acid battery, sulfuric acid waste liquid technology, applied in lead-acid battery, secondary battery repair/maintenance, battery recycling, etc., can solve the problems of difficult process control, environmental pollution, high processing cost, and achieve high market application Prospects, reducing the difficulty of recycling, and the effect of low implementation costs

Active Publication Date: 2017-01-11
张修斌
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In these methods, the recycling technical scheme for sulfuric acid waste liquid (waste electrolyte of lead-acid battery) is too complicated, the process is difficult to control, the initial investment cost is high, and the processing cost is high. At the present stage in our country, legal recycling enterprises need to Unified recycling of solid waste and waste liquid, and these enterprises are often subject to the recycling of waste liquid, due to the constraints of economic interests, environmental protection policies, geographical restrictions, technological level and other conditions, it cannot be fully implemented, or the processing capacity of waste electrolyte is limited , cannot meet the current social needs
Therefore, driven by economic interests, a large number of waste lead-acid batteries are illegally recycled at low prices by unscrupulous traders, using extremely backward processing technology: random open-air dismantling-release acid-remove lead paste, grids and plates-open hearth furnace High-temperature smelting-reduction of lead, only recovering lead with high value, and the electrolyte liquid is discharged randomly. Since the composition of the electrolyte solution is mainly sulfuric acid and various heavy metal ions, it causes serious surface corrosion, seriously pollutes the environment, and endangers the personal health of residents.

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

[0024] Mechanically disassemble an electric bicycle with a 100A waste lead-acid battery, drill a hole and pour out 4.6L of waste electrolyte, and then use a crusher to break the battery bottle into pieces; put the obtained waste electrolyte and pieces into the pool, pool The bottom of the tank is provided with a liquid outlet, and the liquid outlet is provided with a valve, and the liquid outlet is connected to the filter device through the valve, which is a circular pipe with a length of 50 cm and a radius of 5 cm, and the pipe is filled with activated carbon.

[0025] Stir the fragments in the pool, let them stand still, make the fragments layered, take out the upper layer of plastic, rinse with a small amount of water about 0.4 L, pour the lotion back into the pool, add 6g of sodium chloride, and connect the waste lead with 12V direct current The two lead plates of the acid battery, which electrolyze the solution in the pool. Before the electrolysis begins, cover the pool w...

Embodiment 2

[0028] 5L of sulfuric acid waste liquid discharged from the galvanizing plant is placed in the pool as described in Example 1, 12g of sodium chloride is added, two lead electrodes are inserted into the sulfuric acid waste liquid, and the lead electrodes are connected to 6V direct current for electrolysis, and the top of the pool is Seal and cover with plastic cloth, open a hole in the middle of the plastic cloth to connect with the exhaust fan through the pipeline, and then connect the exhaust fan to the lime solution through the pipeline, turn on the exhaust fan, electrolyze for about 3 to 4 hours, until there is a continuous diameter greater than 1cm around the lead electrode Large bubbles are generated, stop the power supply.

[0029] The obtained solution is filtered with activated carbon, and the filtrate is diluted with water to make the density 1.05g / ml, and the obtained solution is a lead-acid storage battery repair replenishment solution.

Embodiment 3

[0031] The sulfuric acid waste liquid 5L that copper-plating factory discharges is placed in the pool as described in embodiment 1, adds 13g sodium chloride, inserts two lead electrodes in the sulfuric acid waste liquid, and lead electrode leads 12V direct current electrolysis, and the upper mouth of pool Seal and cover with plastic cloth, open a hole in the middle of the plastic cloth to connect with the exhaust fan through the pipeline, and then connect the exhaust fan to the lime solution through the pipeline, turn on the exhaust fan, electrolyze for about 3 to 4 hours, until there is a continuous diameter greater than 1cm around the lead electrode Large bubbles are generated, stop the power supply.

[0032] The obtained solution is filtered with activated carbon, and the filtrate is diluted with water to make the density 1.05g / ml, and the obtained solution is a lead-acid storage battery repair replenishment solution.

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 belongs to the technical field of harmless treatment of acid-containing waste liquid and in particular discloses a method for preparing replenishing fluid for repairing a lead-acid storage battery by use of sulfuric acid waste liquid. The method comprises the following steps: adding sodium chloride into sulfuric acid waste liquid, inserting a lead electrode, electrolyzing with direct current and stopping electrifying until continuous and large air bubbles are generated at the periphery of the lead electrode; and filtering the solution, adding water into a filtrate for dilution to enable the density of the diluted filtrate to be 1.03-1.08g / ml, thus preparing a solution which is replenishing fluid for repairing the lead-acid storage battery. 8-12g of sodium chloride is added into each five liters of sulfuric acid waste liquid, and 6V or 12V voltage is adopted. According to the method, the sulfuric acid waste liquid can be subjected to innocent treatment, the replenishing fluid with high economic value for repairing the lead-acid storage battery is acquired, the method has the advantages of simplicity in operation and convenience in implementation, the implementation cost is extremely low, the method can be promoted easily and the acid-containing waste liquid pollution can be effectively reduced.

Description

technical field [0001] The invention relates to the technical field of harmless treatment of acid-containing waste liquid. Background technique [0002] Lead-acid battery is the battery with the largest output and widest application among all kinds of batteries in the world. It is mainly composed of plastic shell, lead paste, grid, plate and electrolyte. Statistics show that the lead consumed by lead-acid batteries accounts for 82% of the world's total lead consumption. China has developed into a global lead-acid battery production base, and its lead consumption has surpassed that of the United States to become the world's largest lead consumption country. Therefore, the recycling of lead-acid batteries, especially the recycling of lead, is very important. There are a large number of technical solutions for recycling lead from lead-acid batteries in the prior art, but there are few technical solutions for recycling electrolyte in lead-acid batteries. [0003] The Chinese p...

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): H01M10/42H01M10/06
CPCH01M10/08H01M10/54H01M2300/0011Y02E60/10Y02W30/84
Inventor 张修斌王振荣
Owner 张修斌