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Method and apparatus for treating contaminated salt

A treatment method and technology for polluted salt, which are applied in combustion methods, lighting and heating equipment, alkali metal chlorides, etc., can solve problems such as environmental pollution and resource waste, and achieve the effects of prolonging residence time, saving energy consumption, and being easy to operate.

Inactive Publication Date: 2006-06-21
INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the disadvantages of environmental pollution and waste of resources when dealing with polluted salt in the prior art, thereby providing a harmless treatment method for polluted salt

Method used

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  • Method and apparatus for treating contaminated salt

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Effect test

Embodiment 1

[0020] A pollution and salt harmless treatment device, including a furnace 1, a burner 2, a tail flue 3 and a flue gas washing and purification tower 4. The furnace 1 is arched below the upper circle, and the front wall is aligned with the middle of the rear wall. Burner 2, the rear wall 12 is in the shape of a ladder shrinking toward the bottom of the furnace, the top of the furnace 1 is provided with a dirty salt inlet 11 near the rear wall, the bottom of the furnace 1 is provided with a molten salt collection pool 13, the top of the furnace 1 and the tail flue 3 connected; the air excess coefficient in the furnace 1 is 1.5, and the temperature of the furnace is 850°C. The flame of oil burning goes straight to the rear wall 12, melting the dirty salt sliding down the rear wall 12, and flows into the molten salt collection pool 13. The harmful pollutants in the dirty salt The organic matter is oxidized and decomposed, and the flue gas enters the flue gas washing and purificati...

Embodiment 2

[0022] A pollution and salt harmless treatment device, including a furnace 1, a burner 2, a tail flue 3 and a flue gas washing and purification tower 4, the furnace 1 is an arch below the upper circle, the natural gas burner 2 is installed on the front wall, and the rear wall 12 It is a ladder shape that shrinks toward the bottom of the furnace. The top of the furnace 1 is provided with a dirty salt inlet 11 near the rear wall 12. The bottom of the furnace 1 is provided with a molten salt collection pool 13. The top of the furnace 1 is connected to the tail flue 3; the air in the furnace 1 The excess coefficient is 1, the furnace temperature is 900°C, and the flame of natural gas combustion goes straight to the back wall 12, melting the dirty salt sliding down the back wall 12 and flowing into the molten salt collection pool 13, where the harmful organic matter in the dirty salt is oxidized and decomposed, and the flue gas The flue gas enters the flue gas washing and purificati...

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Abstract

This invention relates to one waste salt innocent treatment method and device from industry waste water, wherein the method comprises the following steps: heating the oven chamber to the 850 to 900 degrees and adding the waste salt from chamber back; the salt is melt to slide down with its organics oxidative decomposed and its tail gas recycled and cleaned for exhaust; the remaining part of the waste salt sliding to the burst oven bottom to get the industry pure salt. The device comprises one burst oven, burst device, tail smoke channel and smoke gas washing cleaning tower, wherein, the burst device is fixed on the front wall of the burst oven; the burst oven chamber top is near to the back wall with waste salt entrance mouth; the chamber bottom is located with melt salt collection pool.

Description

technical field [0001] The invention belongs to the treatment of waste water, and in particular relates to a harmless treatment method and device for polluted salt in industrial waste water. technical background [0002] In the process of pesticide production, a large amount of salty wastewater will be discharged. After the water is recovered by distillation, the obtained brownish yellow granular solid residue is polluted salt. Its main component is NaCl, and it also contains about 5% of harmful organic substances. And a small amount of water, the calorific value is about 650kJ / kg. The characteristics of the polluted salt were studied in the muffle furnace, and it was found that the polluted salt was slightly bonded at 550°C, bonded at 600°C, and melted due to impurities at 700°C. At present, there is no mature and feasible method and device for the treatment of this kind of polluted salt, and it is often discarded directly or discharged into the sea, causing environmental ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23G7/00C01D3/04F23G5/12
Inventor 吕清刚那永洁矫维红贠小银高鸣贺军
Owner INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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