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Chemical waste salt refining and resource utilization system and method

A resourceful and chemical technology, applied in the purification of alkali metal halides, alkali metal chlorides, etc., can solve the problems of complex process and high energy consumption, and achieve the effect of low operating cost

Active Publication Date: 2018-12-18
南京简迪环境工程有限公司 +1
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Problems solved by technology

This process has the disadvantages of complicated process and high energy consumption.

Method used

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  • Chemical waste salt refining and resource utilization system and method

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Such as figure 1 As shown, the chemical industry waste salt refining and resource utilization system of the present invention includes a salt washing reactor 1, two sets of salt washing reactor 1 are set, one set is a spare reactor, and the salt washing reactor 1 is connected to a centrifuge 2, After the waste salt in the salt washing reactor 1 passes through the centrifuge 2 for solid-liquid separation, the solid enters the salt tank 3, and the liquid enters the mother liquid pH adjustment tank 5, and the mother liquid pH adjustment tank 5 passes through the mother liquid adsorption pump 6 and the mother liquid adsorption tower 10 connection, the mother liquor adsorption tower 10 is equipped with an inlet for alkaline desorption liquid to enter, and the mother liquor adsorption tower is equipped with JDA-015 ultra-high hinge adsorption material, which mainly ab...

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Abstract

The invention discloses a chemical waste salt refining and resource utilization system and method. The system comprises a salt washing reaction kettle, the salt washing reaction kettle is connected toa centrifuge, the waste salt in the salt washing reaction kettle is subjected to solid-liquid separation in the centrifuge, the solid enters a salt dissolving tank, the liquid enters a mother liquorPH regulating tank, the mother liquor PH regulating tank is connected to a mother liquor adsorption tower through a mother liquor adsorption pump, the mother liquor adsorption tower is equipped with an alkaline desorption liquid inlet, and after adsorption, the mother liquor in the mother liquor adsorption tower is fed into the salt washing reaction kettle through a resin effluent tank. Accordingto the chemical waste salt refining and resource utilization system and method provided by the invention, a saturated sodium chloride solution and the semi-finished product sodium chloride are obtained by the centrifuge, and are used as the raw materials of an ion-exchange membrane workshop after adsorption, thus realizing the maximum utilization of resources.

Description

technical field [0001] The invention relates to a system and method for refining and resource utilization of chemical waste salt, belonging to the field of waste salt treatment. Background technique [0002] In the face of increasingly stringent environmental protection policies, the treatment and disposal of waste salt and residues has become an urgent problem to be solved. Waste salt and residues mainly come from the chemical industry, with various types, complex components, multiple sources, high content of toxic and harmful substances, and disposal The characteristics of high cost and great environmental hazards have attracted widespread attention from the public and managers. The main component of chemical waste salt is sodium chloride, which can be roughly divided into single waste salt, mixed salt and waste salt containing organic matter. Among them, mixed salt refers to salt containing the above-mentioned multiple components; waste salt containing organic matter con...

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Application Information

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IPC IPC(8): C01D3/04C01D3/14C01D3/16
CPCC01D3/04C01D3/14C01D3/16
Inventor 赵杰顾家立顾行祥冯雪谢坤元
Owner 南京简迪环境工程有限公司
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