Waste vitriol re-use technics and apparatus for accumulator plate product

Abstract

This invention relates to a process for recycling waste sulphuric acid in course of making accumulator pole plate and its device, comprising recycling lead by adding acid and fractional precipitation, alkali neutralization, chemical reaction and waste sulphuric acid transmission, and using the first and second films separating method to comprehensively treat waste sulphuric acid brought from drenching acid and chemical reaction. The invention has the advantages of lower production cost, saving water in maximum extent and improving the condition of water usage in factory district, improving environment protection level and economical benefit.

Description

technical field [0001] The invention relates to a technology and equipment for recycling waste sulfuric acid in the production of storage battery pole plates. Background technique [0002] At present, in the production of lead-acid battery plates at home and abroad, most of the dilute sulfuric acid is used in the chemical formation process, the leaching process and the chemical formation process (see image 3 ), the production of a large amount of waste sulfuric acid mostly takes the method of adding caustic soda to neutralize the waste acid or transporting it out. Due to the lack of economical and effective treatment methods for the reuse of sulfuric acid, it leads to waste of financial resources and manpower, low utilization rate of sulfuric acid, high cost of transportation, and causes the intermediate raw materials of the plate production process to consume a large amount of purchase costs and occupy a large amount of resources. Environmental protection resources at the ...

AI Technical Summary

Problems solved by technology

In order to reduce environmental pollution, production companies and environmental protection departments use a large amount of caustic soda as a neutralizer in wastewater treatment. The problems are: first, the cost of environmental protection treatment is high in terms of funds, sites, and personnel; second, wastewater treatment stations It contains sodium sulfate, which will crystallize when its concentration reaches 10,000-20,000 mg / l. If the outbound water is reused for land flushing, greening, or as circulating water, white crystals will appear after the water evaporates, which will affect the The beauty of the venue

If it is discharged directly, it will cause environmental pollution

[0004] Therefore, with the continuous expansion of production scale, the original equipment of battery plate manufacturers cannot meet the requirements of environmental protection and production water reuse

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