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Comprehensive treatment device for industrial waste salt based on three-section incinerator and use method of device

A technology for comprehensive treatment of industrial waste salt, applied in the chemical industry, sustainable manufacturing/processing, alkali metal chloride, etc., can solve the problems of waste of resources, environment, pollution, etc., and achieve energy saving, high purity, and high degree of automation Effect

Active Publication Date: 2015-02-04
安徽今朝环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, due to the lack of energy-saving and environmentally friendly treatment methods, industrial waste salt is mainly disposed of in landfills, resulting in waste of resources and environmental pollution

Method used

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  • Comprehensive treatment device for industrial waste salt based on three-section incinerator and use method of device
  • Comprehensive treatment device for industrial waste salt based on three-section incinerator and use method of device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Hydrazine hydrate by-product industrial waste salt is 1,000kg. After testing, its main components are sodium chloride and organic impurities. After being dissolved and dried, it enters the three-stage incinerator 3, and the temperature is controlled at 450°C; the number of trays 31 is set to 3. Then by adjusting the rotating speed of the motor 30, the residence time was controlled at 5 hours to obtain 920 kg of sodium chloride. After testing, the purity of sodium chloride in the finished product was 99%.

Embodiment 2

[0036] Furanol by-product industrial waste salt 1000kg, after testing, its main components are sodium chloride and organic impurities, after being dissolved and dried, enter the three-stage incinerator 3, the temperature is controlled at 600 ° C; The adjustment of 30 rotating speeds and the hole diameter of the feeding hole made the residence time be controlled at 10 hours, and 91 kg of sodium chloride was obtained. After testing, the purity of the sodium chloride was 99%.

Embodiment 3

[0038] 1000kg of other industrial waste salt, after testing, its main components are sodium chloride and organic impurities, including some phosphate, sulfate, iron ions, and magnesium ions.

[0039] Put industrial waste salt into the dissolution treatment tank 1, after adding water to dissolve, put an appropriate amount of sodium carbonate into the dissolution treatment tank 1, stir to make it fully react to remove magnesium ions; then add an appropriate amount of barium chloride, stir to make it fully react, and generate barium sulfate , barium phosphate and other precipitates.

[0040] The above-mentioned materials are left to stand, and the supernatant is extracted into the drying tower 2, and then enters the three-stage incinerator 3 after drying, and the temperature is controlled at 600 ° C; the residence time is controlled at 10 hours, and 910 kg of sodium chloride is obtained. After testing, its chloride Sodium purity is 98%.

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Abstract

The invention provides an industrial waste salt treatment device which can remove that impurity products from an industrial waste salt, and ensure the requirement of chlor-alkali industry on raw materials can be met and a production process is energy-saving and environment-friendly. The device comprises a dissolving pond, a drying tower, a three-section incinerator, a heat exchanger and a tail gas removal system, wherein the dissolving pond is connected with a spray nozzle in the drying tower through a pipeline and a pump; a material outlet in the bottom of the drying tower is connected with the inlet of the three-section incinerator, and the gas outlet of the drying tower is connected with the tail gas removal system through the heat exchanger; a plurality of trays are arranged at the upper end of the inner cavity of the three-section incinerator, discharging holes are uniformly distributed in the trays, and a matched propeller is arranged above each tray; a motor is arranged in the center at the top end of the three-section incinerator, and the main shaft of the motor is connected with the propellers; a gas nozzle is formed in the middle end of the inner cavity, and a gas inlet connected with an air blower is formed in the bottom end of the inner cavity; a smoke outlet in the top end of the three-section incinerator is connected with a tail gas removal and secondary incineration disposal system. The invention further provides a use method of the device.

Description

technical field [0001] The invention relates to industrial waste treatment, in particular to an industrial waste salt comprehensive treatment device, and the invention also provides a method for using the above device to treat industrial waste salt. Background technique [0002] In the process of producing hydrazine hydrate, furanol, pesticides, intermediates and other products, a large amount of industrial waste salt will be produced. The main component of industrial waste salt is sodium chloride, but there is also some organic matter, so it cannot be directly used in the chlor-alkali industry. Among them, the content of organic matter is about 1% to 10%, the content of sodium chloride is about 60% to 90%, and the rest is water. For example: the production of 1 ton of hydrazine hydrate produces approximately 3 tons of industrial waste salt, which contains a large amount of sodium chloride, sodium hydroxide, and some amines; the production of 1 ton of furan phenol produces a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01D3/04
CPCY02P20/10
Inventor 李书龙
Owner 安徽今朝环保科技有限公司