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Incineration treatment method of nitrile-containing waste residues

A treatment method and waste residue technology, applied in combustion methods, chemical instruments and methods, solid waste removal, etc., can solve the problems of large dosage of chemicals, complete oxidation of refractory cyanides, high energy consumption, etc., to reduce leaching concentration, Short disposal period and stable effect

Inactive Publication Date: 2017-10-13
云南大地绿坤环保科技有限公司
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Problems solved by technology

This incineration method is not suitable for cyanide-containing waste residues with high soluble salt content. It is difficult to completely oxidize cyanide in all waste residues, and high-salt cyanide-containing waste residues are corrosive, requiring high anti-corrosion requirements for heat treatment equipment and low energy consumption. high
Patent CN104070052B discloses a treatment method for cyanide-containing waste residues. The cyanide-containing waste residues with high soluble salt content are processed through four steps of alkali adjustment, cyanide breaking, granulation, and drying and solidification. The removal rate of cyanide is high, but the treatment process is complicated , large dosage

Method used

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Experimental program
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Embodiment 1

[0024] Taking the nitrile-containing waste residue of a chemical plant as the processing object, it is mainly the expired finished products of iminoacetonitrile, anilinoacetonitrile, and hydroxyacetonitrile workshops, mixed with a small amount of ammonium sulfate and yellow blood sodium salt. The original test results: pH = 3.5, the total Cyanide 10400mg / kg, total sulfur 0.32%, total chlorine 0.019%, totaling 200 tons.

[0025] Utilize method of the present invention to process this nitrile-containing waste residue:

[0026] According to 5% of the total amount of nitrile-containing waste residue, add dispersant Chinese medicine residue, add slaked lime at the same time to adjust the pH of the material to 5.5, stir evenly and place it for 6 days. The pretreated waste slag enters the rotary kiln with other waste liquids according to different feeding routes after the menu is compatible. The temperature at the kiln tail of the rotary kiln is controlled at 750±20°C, and the waste ...

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Abstract

The invention relates to an incineration treatment method of nitrile-containing waste residues, and belongs to the technical field of treatment of hazardous wastes. According to the incineration treatment method of the nitrile-containing waste residues, a high temperature reclamation furnace is utilized, the nitrile-containing waste residues are subjected to harmless treatment through processes like batching, mixing, feeding, incineration and flue gas purification, treated slag is utilized as aggregate for preparing cementing materials, reduction, harmlessness and resource purposes of the nitrile-containing waste residues are achieved, a high temperature incineration treatment technology is mature, the industrialized operation effect is stable, and the flue gas standard reaches the national flue gas emission standard (GB18484-2001).

Description

technical field [0001] The invention belongs to the technical field of harmless treatment of hazardous waste, and in particular relates to an incineration treatment method of nitrile-containing waste residue. Background technique [0002] With the acceleration of my country's industrialization process, social productivity continues to increase, and environmental problems are becoming increasingly severe. Hazardous waste has a wide range of sources, complex components, and great harm, which has become the focus and difficulty of environmental protection. Hazardous waste refers to waste that is included in the national list of hazardous waste or identified according to the national hazardous waste identification standards and identification methods, and has hazardous properties such as corrosiveness, flammability, toxicity, reactivity, and infectivity, including Nitrile waste residue belongs to HW38 organic cyanide in the list of hazardous waste. [0003] With the implementat...

Claims

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Application Information

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IPC IPC(8): B09B3/00F23G5/16F23G5/20F23G5/44F23G5/46F23G5/50
CPCF23G5/16F23G5/20F23G5/44F23G5/46F23G5/50F23G2201/701B09B3/40
Inventor 任雪娇尹砾珩姜泽标邱金成和学友李金勇古家靖
Owner 云南大地绿坤环保科技有限公司
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