Harmless treatment method of industrial waste salt containing organic matter

Abstract

The invention belongs to the field of treatment and disposal of industrial waste salt, and particularly discloses a harmless treatment method of industrial waste salt containing organic matter. The harmless treatment method comprises the steps that firstly, the waste salt is dried to remove water and the low-boiling-point organic matter in the waste salt, the dried salt is crushed and sieved to the required particle size, and then fed into pyrolysis equipment, the organic matter in the salt is heated to be decomposed into a gas phase, the organic matter and fine salt particles are together discharged into a cyclone separator along with airflow, the particles and gas are separated to recover salt powder, and organic exhaust gas enters an exhaust gas treatment device to be treated and then discharged after reaching the standard. The water and the organic matter in the waste salt are fully removed through drying, crushing, sieving and fluidized bed pyrolysis technologies, the organic exhaust gas generated in the treatment process is subjected to standard treatment, finally, dry salt powder which is low in impurity content and meets product quality requirements is obtained, and can befurther recycled.

Description

technical field [0001] The invention belongs to the field of harmless treatment and disposal of industrial waste salt, and in particular relates to a method for harmless treatment of industrial waste salt containing organic components. Background technique [0002] In recent years, cases of illegal disposal of hazardous waste have occurred frequently, which has aroused widespread concern from all walks of life. Many of these cases involved the disposal of hazardous waste in the chemical industry, especially waste residue and salt. This kind of waste has the characteristics of wide sources, various types, complex components, and high content of toxic and harmful substances. It is not only harmful to the environment, but also faces increasingly strict treatment and disposal requirements and environmental management policies. The treatment and disposal requirements and costs continue to increase, so it is difficult to deal with. It is very large and has become one of the main ...

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Problems solved by technology

[0011] With this technology, relatively pure salt can be obtained, and the obtained salt can even be further processed into other chemical raw materials. It is an ideal method for recycling waste salt. For the waste salt with high sodium chloride content, the salt solution formed by dissolving in water will poison the resin due to the large amount of chloride ions, resulting in poor adsorption of organic matter, or even loss of adsorption, which also limits the adsorption and desorption by resin. Industrialization and Application of the Technology of Removing Organic Matter in Water

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