Loading region asphalt smoke adsorption treatment system and treatment method for asphalt agitating plant

Abstract

The invention relates to a loading region asphalt smoke adsorption treatment system for an asphalt agitating plant. The adsorption treatment system comprises a loading region sealing device, an asphalt smoke collection device and an asphalt smoke adsorption device, wherein the asphalt smoke adsorption device comprises an adsorbent temporary storage bin, an adsorbent air transport device, an adsorption mixer, a dedusting system, a waste powder air transport device and an air exhaust system; the adsorbent temporary storage bin is connected with the adsorption mixer through the adsorbent air transport device; the adsorption mixer is connected with the dedusting system through a flue; the dedusting system is connected with an inlet flue of a drying line deduster through the waste powder air transport device; and the adsorbent temporary storage bin is connected with a drying system recovered powder tank of asphalt blending equipment. According to the invention, fine powder recovered by the drying line deduster of the asphalt blending equipment is used as an adsorbent for physical adsorption of asphalt smoke; the recovered powder after oil adsorption can be further used for production of an asphalt mixture; and the whole system is low in air quantity, high in purification efficiency and low in operation cost, and causes no secondary pollution, thereby favorably solving the pollution problem caused by unorganized emission of the asphalt smoke during production of the asphalt agitating plant.

Description

technical field [0001] The invention relates to an asphalt fume treatment system, in particular to an asphalt fume adsorption treatment system and treatment method in the loading area of ​​an asphalt mixing station. Background technique [0002] During the mixing process of asphalt mixture, the asphalt should be heated to 150-180°C, and the temperature of the finished asphalt mixture is usually 140-160°C. Asphalt fumes are released when the asphalt is heated. Asphalt smoke is mainly composed of liquid hydrocarbons or solid hydrocarbon particles and gaseous hydrocarbon derivatives. It contains a variety of carcinogens, of which benzopyrene is a strong carcinogen. [0003] The asphalt mixture mixing process is generally in a closed negative pressure state, and asphalt smoke rarely escapes. The pollution of asphalt fumes is mainly concentrated in the finished material loading area. When the asphalt mixture is unloaded, large strands of asphalt fumes diffuse and flow around, ...

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Problems solved by technology

[0007] The main purpose of the present invention is to overcome the shortcomings of the prior art, to provide a kind of fine powder recovered by the dust collector of the drying line of the asphalt mixing equipment as the adsorbent to physically adsorb the asphalt smoke, and the recovered powder after oil absorption can continue to be used in production Asphalt mixture, with high purification efficiency, low operating cost, and no secondary pollution, can well solve the pollution problem caused by the unorganized emission of asphalt fumes during the production of asphalt mixing plants. The asphalt fume adsorption treatment system in the loading area of ​​asphalt mixing plants and processing method

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