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Integrated treating method for plastic pelletization waste gas

A treatment method and oxidation treatment technology, applied in chemical instruments and methods, separation methods, dispersed particle separation, etc., can solve the problems of polluting the ecological environment, surrounding residents, health and safety hazards, etc., to reduce energy consumption and save land. , good oxidative decomposition effect

Inactive Publication Date: 2015-04-29
SOUTH CHINA INST OF ENVIRONMENTAL SCI MEP
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Problems solved by technology

[0004] During the recycling and granulation of waste plastics, when the temperature exceeds 200°C, the plasticizer and its internal low-boiling impurities will undergo oxidative decomposition, and the waste gas produced is mainly Including dust, aromatics, amines, hydrogen sulfide, phenols, aldehydes, acids, alkalis, unsaturated hydrocarbons and other odorous compounds, resulting in a foul smell in plastic waste gas, which seriously pollutes the local ecological environment , bringing hazards to surrounding residents and health and safety

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Embodiment Construction

[0018] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings, but the implementation and protection of the present invention are not limited to this.

[0019] An integrated plastic granulation waste gas treatment method, which uses ozone to fully contact the waste gas to oxidize the waste gas. The oxidized gas is then degraded by ultraviolet light, and the ultraviolet degraded gas is then treated with acid The mist purification tower and alkaline absorption liquid are purified, and finally activated carbon adsorption treatment.

[0020] The method of this example passes figure 1 or figure 2 The processing device used in this example shown in accordance with the waste gas treatment process includes an oxidation tower 3, an acid mist purification tower 7 and an adsorption tower 15. The three towers are integrated; there is an exhaust gas inlet 1 at the bottom of the oxidation tower, and the oxidation to...

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Abstract

The invention relates to an integrated treating method for plastic pelletization waste gas. The treating method comprises the following steps: adopting ozone and waste gas to be in full contact; conducting oxidation treatment on the waste gas; conducting ultraviolet light illumination on the gas after oxidation treatment for degradation treatment; adopting an acid mist purification tower and alkali absorption liquid to purify the gas after ultraviolet degradation treatment; conducting activated charcoal adsorption treatment. The treating method is remarkable in treating effect, has excellent oxygenolysis and absorption capacity to plastic pelletization waste gas, saves occupied land, reduces energy consumption and cost, and has a relatively high application effect.

Description

Technical field [0001] The invention belongs to the technical field of waste plastic utilization, and specifically relates to a method for treating waste gas from plastic granulation. Background technique [0002] As the demand for plastics continues to increase, waste plastics are also gradually increasing. The disposal of plastic waste is a major difficulty in environmental treatment. Recycling waste plastic is an environmentally friendly and economical approach. At this stage, my country's waste plastic recycling technology is still based on physical recycling. The recycling process is mainly collection, classification and separation, cleaning, drying, crushing and granulation, after modification and reprocessing, it is made into products suitable for market demand or mixed with new materials. use. [0003] The recycling and reuse of waste plastics is an environmentally friendly and economical approach, which includes physical and chemical methods. The physical method is to pr...

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Application Information

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IPC IPC(8): B01D53/75B01D53/76B01D53/78B01D53/52B01D53/72
Inventor 吴彦瑜许冠英彭晓春
Owner SOUTH CHINA INST OF ENVIRONMENTAL SCI MEP
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