Treatment method and treatment equipment for dry tail gas in artificial board industry

Abstract

The invention relates to a treatment method and treatment equipment for dry tail gas in artificial board industry. The treatment method comprises the following steps: (a) directly discharging the drytail gas after sequentially carrying out pre-spraying treatment and wet type electric dedusting treatment on the dry tail gas, and collecting a spraying solution; (b) standing and layering the spraying solution, thus obtaining first supernatant and first precipitate; (c) filtering the first supernatant, and standing and layering, thus obtaining second supernatant and second precipitate; (d) collecting the first precipitate and the second precipitate, and using a part of the second supernatant as the spraying solution for recycling. According to the treatment method and the treatment equipment,disclosed by the invention, dedusting, dehumidifying deodorizing and ultralow emission can be achieved by adopting the pre-spraying treatment and the wet type electric dedusting treatment, and the problem of ultralow emission of pollutants in the dry tail gas in the artificial board industry can be solved; by adopting wastewater after filtration and filter pressing treatment as a recycling solution, the using amount of water is greatly reduced, and the running cost is reduced.

Description

technical field [0001] The invention belongs to the field of tail gas treatment in the wood-based panel industry, and relates to a treatment method for dry tail gas, in particular to a treatment method for dry tail gas in the wood-based panel industry and processing equipment thereof. Background technique [0002] With the continuous development of social economy, air pollution is becoming more and more serious, and people's working and living environment is deteriorating day by day, so people's requirements for the quality of living environment are getting higher and higher. At present, protecting the environment has become a consensus among people, so it is necessary to purify the waste gas produced by industry to prevent it from polluting the air. At present, wood-based panel factories are basically self-discharging exhaust emissions, and there is no control over the components of exhaust gases. The main components of the exhaust gas from wood-based panel production are ...

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Problems solved by technology

[0003] The Chinese invention patent with the application number 201510313937.9 discloses a treatment method and equipment for waste gas in the wood-based panel industry. The waste gas is introduced into the washing tower for spray treatment and then discharged directly to collect the spray liquid. Obviously, it is discharged directly in this way The humidity of the exhaust gas is relatively high, so a large amount of water is required, which makes the operating cost higher

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