Two-stage crushing and cleaning process for waste packaging materials

Abstract

The invention discloses a two-stage crushing and cleaning process for waste packaging materials. The two-stage crushing and cleaning process comprises the following steps of waste packaging barrel selection, crushing treatment, primary cleaning, cooling and grinding, magnetic separation, secondary cleaning, waste treatment and anti-seepage treatment. According to the two-stage crushing and cleaning process, a shredder is used for crushing treatment and primary crushing is carried out, so that some impurities such as particulate matters and dust on the surface are removed; then liquid nitrogenis used for cooling and is matched with a grinding machine for cold treatment, so that the embrittlement of adhesive materials and the separation of fragments are realized, the treatment is more perfect, the recycling of subsequent fragments is facilitated, and the utilization rate is improved; and in the treatment process, a gas collecting hood is used for being matched with a suction pump to collect waste gas completely, then ROC is used for catalytic combustion, a vacuum pump is used for directly sucking waste water into a waste water collecting pool, flocculation precipitation and steam flotation separation are carried out after cotton pressing and filtering, and recycling is carried out after ceramic filtering, so that air pollution is reduced, and water resources are saved.

Description

technical field [0001] The invention relates to the technical field of waste packaging treatment, in particular to a secondary crushing and cleaning process for waste packaging. Background technique [0002] In today's world, through market surveys, it is found that there are a large number of hazardous waste packaging barrels in many industries, such as paints, coatings, automobile factory lubricants, solvents, additives, resins, mineral oil, acids, alkalis 200L iron barrels, these waste packaging barrels can be described as piled up like a mountain; [0003] For waste packaging barrels, in the prior art, 70-degree high-temperature water is generally used together with cleaning fluid to carry out high-pressure spraying to clean and break the packaging barrels. This treatment method can only remove some impurities and wastes that are not tightly adsorbed on the surface. The treatment is not perfect, the packaging barrel cannot be recycled, and waste liquid and gas will be g...

AI Technical Summary

Problems solved by technology

[0003] For waste packaging barrels, in the prior art, 70-degree high-temperature water is generally used together with cleaning fluid to carry out high-pressure spraying to clean and break the packaging barrels. This treatment method can only remove some impurities and wastes that are not tightly adsorbed on the surface. The treatment is not perfect, the packaging barrel cannot b...

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