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Electroplating hanger hook off heavy metal waste nitric acid recycling device and recycling method

A technology for removing heavy metals and electroplating hangers, which is applied in the direction of nitric acid, nitrogen oxides/oxygen-containing acids, etc., can solve the problems of potential safety hazards and manpower consumption of waste nitric acid, and achieve the goal of preventing explosions, eliminating potential safety hazards, and reducing recycling costs. Effect

Active Publication Date: 2016-08-10
东莞瑞德环保科技有限公司
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Problems solved by technology

[0004] In view of this, the present invention aims at the deficiencies in the prior art, and its main purpose is to provide a recycling device and method for recycling waste nitric acid from heavy metals in electroplating racks, which can effectively solve the problem of using manual operations to recycle waste nitric acid. It is labor-intensive and poses a major safety hazard

Method used

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  • Electroplating hanger hook off heavy metal waste nitric acid recycling device and recycling method

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Embodiment Construction

[0035] Please refer to figure 1 As shown, it shows the specific structure of a preferred embodiment of the present invention, including a support 10 and a reaction kettle 20 , a drying device 30 and a still 40 arranged on the support 10 .

[0036] Wherein, the reaction kettle 20 is used to hold waste nitric acid and sulfuric acid containing heavy metals. The reaction kettle 20 is a glass kettle, which has strong acid and alkali resistance. The reaction kettle 20 has a feed port 21, a feeding port 22, The liquid output port 23, the input port 24 and the sediment output port 25 are used again. The reactor 20 is provided with a stirring device 50. Specifically, the stirring device 50 includes a motor 51 and a stirring paddle 52 driven by the motor 51 to rotate. , the stirring paddle 52 is installed on the output shaft of the motor 51 and the stirring paddle 52 is located in the reaction kettle 20 , and the motor 51 is fixed on the bracket 10 .

[0037] The distillation still 40 ...

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Abstract

The invention discloses a reuse apparatus and a reuse method for waste nitric acid generated in a process of hooking and removing heavy metals by using an electroplating hanger. The reuse apparatus comprises a support, and a reaction kettle, a spin-drying device and a distillation kettle arranged on the support; and the reaction kettle is inside provided with a stirring device. The stirring device is utilized to stir waste nitric acid containing heavy metals and sulfuric acid in the reaction kettle so that heavy metals (copper nitrate and nickel nitrate) in waste nitric acid are fully mixed with sulfuric acid for reaction and heating is uniform, and thus explosion caused by nonuniform heating is effectively avoided; and the spin-drying device is utilized to perform spin-drying on precipitate, the distillation kettle is cooperatively utilized for distilling a liquid, and a cooling device is utilized for cooling steam, and thus a pure nitric acid liquid is recovered. The whole recovery utilization process is automatically performed without manual intervention, manpower consumption is reduced, the whole reuse apparatus is low in cost, the recovery processing cost is extremely low, safety hidden trouble is completely eradicated, and also energy saving and emission reduction are facilitated, resource is reutilized, and benefit is brought to mankind.

Description

technical field [0001] The invention relates to the technology in the field of waste nitric acid recycling equipment and methods, in particular to a recycling device and method for recycling waste nitric acid from heavy metals hooked on electroplating racks. Background technique [0002] Nitric acid is one of the commonly used chemicals in industrial production. According to incomplete statistics, a medium-sized industrial city with relatively many electroplating plants produces hundreds of tons of waste nitric acid every day. Nitric acid occupies a large part. [0003] However, at present, for the waste nitric acid produced, the general recycling enterprises just add alkali or lime for simple recovery treatment, and then discharge it directly to the outside, which not only wastes resources (including nitric acid, alkali or lime), but also causes A large amount of nitrate pollutes the environment and does not meet the current requirements for energy saving and emission redu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B21/46
Inventor 盛克松
Owner 东莞瑞德环保科技有限公司
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