Solid waste recovery and processing system of waste lead acid accumulator

Abstract

The invention discloses a system for recovering the solid waste in old and waste lead-acid storage batteries, comprising a reverberator, a finery, a flue, a dust removal house and a coal gas producer, wherein the finery is connected to the back end of the reverberator; the outlet flues of the reverberator and the finery are communicated with the front end of the flue; the dust removal house is communicated with the back end of the flue; the coal gas producer is connected with the reverberator and the finery. The invention adopts the gas combustion in the coal gas producer to heat both the reverberator and the finery and adopts a plurality of coal gas nozzles to provide enough fire to thoroughly smelt lead containing materials, with the fire in the front moving constantly backward to thoroughly smelt lead containing materials at the back, thereby saving energy resource; a heat exchanger is arranged for secondary combustion to provide big fire, thereby the smelting takes less time for completely smelting the lead containing materials; as cloth-bag dust removal followed by the dust removal of water film is adopted, the dust is completely removed, so the discharged gas causes no pollution to the atmosphere. The invention allows the lead containing solid waste to be burnt thoroughly and the dust to be removed completely.

Description

【Technical field】 [0001] The invention relates to the field of lead-acid storage batteries, in particular to a solid waste recovery and treatment system in waste lead-acid storage batteries. 【Background technique】 [0002] Lead-acid batteries are used in a wide variety of applications to power a wide variety of products. At present, electric bicycles that are vigorously promoted as smoke-free vehicles basically use lead-acid batteries to provide walking power. However, lead-acid batteries are prone to cause "secondary pollution" but the development of this new type of means of transportation has been criticized. [0003] Lead-acid batteries are composed of positive and negative plates, separators, shells, electrolytes and wiring pile heads, etc. The chemical reaction of the discharge depends on the positive plate active material (lead Lead) is carried out under the action of electrolyte (dilute sulfuric acid solution), wherein the grid of the pole plate is made of lead-ant...

AI Technical Summary

Problems solved by technology

During the dismantling process of the battery, the acid liquid is easy to leak into the soil and cause pollution; the lead-containing substances are not burned sufficiently, and the lead recovery rate is low, generally only reaching about 80%, and the residual lead discharged into the atmosphere will still cause pollution. ; There is a lot of lead dust in the production workshop, which affects the physical and mental health of the operators; the waste gas and smoke discharge equipment is simple and easy to leak, causing pollution to the environment

The leaked waste water contains soot suspensions and heavy metal ions that naturally settle in the air, directly causing pollution to groundwater and drinking water for residents; the waste residue contains lead, arsenic, antimony and other minerals deposited in the soil, which are difficult to remove , and gradually gather in crops, through the food chain, causing harm to animals and humans

Among them, the main causes of the above pollution are relatively simple treatment equipment for lead-containing solid waste, insufficient combustion of lead-containing materials, and incomplete dust removal before exhaust gas discharge.

There is also a smelting technology that uses desulfurization first and then fire reduction in foreign countries. However, this technology requires a lot of equipment and requires a variety of equipment such as blast furnaces, reverberatory furnaces, electric furnaces, and converters, and its working process will also pollute the environment.

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