Asphalt smoke is characterized by easy adhesion, easy to ignite above a certain temperature. In the process of the collection, transportation and smoke elimination of asphalt smoke, it is easy to stick to the surface of pipelines and equipment to form liquid to solid asphalt. After consolidation, asphalt is difficult to remove, often resulting in pipeline blockage, equipment damage, so that the system can not run normally.
In addition, the components of bitumen flue gas are very complex and vary with the source of bitumen. There are not only solid and liquid particles condensed from volatile components of asphalt, but also organic matter in vapor state. Some organic matter is polymer polymer, which will cause serious pollution to the environment. Flue gas contains a variety of organic compounds, including carbon cyclic hydrocarbons, cyclic hydrocarbon derivatives and other compounds, many of which are harmful to human health. Asphalt smoke contains benzo pyrene, benzanthracene, carbazole and other polycyclic aromatic hydrocarbons, and most of them are carcinogenic and strong carcinogens, the main way of harm to human health is attached to the dust below 8 um, through the respiratory tract is inhaled into the body. Therefore, it is very necessary to purify the asphalt fume and make the emission meet the standard of atmospheric environment.
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