System and method for treating asphalt smoke by using water washing method

Abstract

The invention provides a system and method for treating asphalt smoke by using a water washing method and belongs to the technical field of clean production. The system comprises a molding workshop aswell as an air sucking system, a water mist dust collector system and an air blowing dust conveying system, wherein the molding workshop is 10 meters high or greater; the roof of the molding workshopis sealed; the air sucking system comprises an air sucking pipeline; the air inlet of the air sucking pipeline is formed at a height of 8-15 meters in the molding workshop; the air outlet of the airsucking pipeline communicates with the inlet of the water mist dust collector system; the air blowing dust conveying system comprises an air blowing pipeline and an air blowing pressurizing fan; the air blowing pressurizing fan is arranged on the air blowing pipeline; the tail end of the air blowing pipeline is an air blowing hole; the air blowing hole is formed at a height of 2-6 meters in the molding workshop; the air blowing hole faces to the air inlet of the air sucking pipeline; and the outlet of the water mist dust collector system communicates with the air inlet of the air blowing pipeline. The system and the method provided by the invention are simple in structure and low in cost, and zero emission of asphalt smoke can be achieved.

Description

[0001] 【Technical Field】 [0002] The invention relates to the technical field of clean production, in particular to a system and method for treating asphalt smoke and dust with a water washing method. [0003] 【Background technique】 [0004] Anode carbon block is an important material for electrolytic aluminum. There is a forming step in the production process of anode carbon block. A warm carbon paste is used to make the initial shape of the anode. The paste is composed of pitch and graded granular calcined coke. The temperature of the paste entering the molding process is about 150 degrees. In the forming process, the paste is discharged from the pot, conveying, entering the mold, exiting the mold, and entering the pool. Asphalt volatiles are discharged with fine particle size smoke and dust, forming air pollutants. [0005] The characteristics of the asphalt dust include the following: [0006] 1. High viscosity; [0007] 2. As the temperature decreases, the viscosity changes greatl...

AI Technical Summary

Problems solved by technology

[0006] 1. High viscosity;

[0007] 2. As the temperature decreases, the viscosity changes greatly;

[0008] 3. Poisonous and peculiar smell;

[0010] At present, the industry mainly adopts black dust removal and electric capture dust removal technology for treatment, which not only requires a large investment and high operating costs, but also it is difficult to meet the new requirements of continuously improving environmental protection indicators

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