Asphalt smoke treatment system for loading area of asphalt stirring station

Abstract

The invention discloses an asphalt smoke treatment system for a loading area of an asphalt stirring station. The asphalt stirring station comprises a combustor, a stirring cylinder and a waste gas treatment device, the waste gas treatment device treats waste gas generated by the asphalt stirring station, and the asphalt smoke treatment system comprises a loading workshop, a workshop dust-collection device, a combustor gas inlet device, a smoke powder treatment device, a reclaimed powder conveying device and a smoke powder conveying device. The smoke powder treatment device is arranged, reclaimed powder treated and reclaimed by the waste gas treatment device is fed into the smoke powder treatment device to adsorb asphalt smoke and then fed into the stirring cylinder to be utilized secondarily, thus the treatment mode is environmentally friendly, the asphalt smoke and the reclaimed powder can be simultaneously utilized secondarily, and resource waste is reduced.

Description

technical field [0001] The invention belongs to the technical field of asphalt mixing plant production, in particular to an asphalt flue gas treatment system in the loading area of ​​the asphalt mixing plant. 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. After the asphalt is heated, asphalt fume will be volatilized, which is mainly composed of liquid hydrocarbons or solid hydrocarbons. It is composed of fine particles and gaseous hydrocarbon derivatives. It contains a variety of carcinogens, of which benzopyrene is a strong carcinogen. The asphalt mixture mixing process is generally in a closed negative pressure state, and the asphalt smoke rarely escapes, and the pollution of asphalt smoke It is mainly concentrated in the finished material loading area. When the asphalt mixture is unloaded, large strands of asphalt smoke diffuse ...

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Problems solved by technology

[0003] At present, the asphalt fume treatment methods in the domestic asphalt mixing industry include combustion method, electric capture method, absorption method, etc. These methods have many problems such as low purification efficiency, high cost, and secondary pollution.

[0004] In addition, most domestic manufacturers use traditional local exhaust devices to capture asphalt fumes, which have problems such as low collection efficiency, large air volume, and high energy consumption of fans. Some mixing plants adopt the method of sending asphalt fumes into drying drums for incineration. If the exhaust air volume is too large, the wind speed at the cross section of the drum will be too fast, the heat exchange between the hot air and the material will be insufficient, the thermal efficiency will decrease, and the fuel consumption of the burner will increase.

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