A kind of emulsified asphalt for degrading waste gas

Abstract

The invention discloses emulsified asphalt capable of degrading exhaust gas. The emulsified asphalt capable of degrading the exhaust gas is obtained by dispersing a modification catalyst and a sustained release capsule in water to obtain an additive mixed solution, and adding the additive mixed solution to base emulsified asphalt for uniform mixing. By the adding of the catalyst with specific components and the sustained release capsule capable of slowly releasing an oxidant, an effect that one catalyst can purify exhaust gas of automobiles and volatile gas of the asphalt. The catalyst can beused as a photocatalyst on the surface of the asphalt, and can also be used as an oxidation catalyst in an asphalt bulk phase, thus reducing the catalyst cost and achieving synergistic removal of theexhaust gas.

Description

technical field [0001] The present application relates to an emulsified asphalt for degrading waste gas, in particular to an emulsified asphalt capable of reducing vehicle exhaust and volatile gas of the asphalt itself. Background technique [0002] With the rapid development of the national economy, the number of automobiles in my country continues to increase, and the emission of automobile exhaust is becoming more and more serious, making air pollution a social problem that the public focuses on. For this reason, many technologies for purifying automobile exhaust have emerged as the times require. Among them, adding photocatalysts to pavement materials to remove automobile exhaust has attracted widespread attention. For example, many studies such as Chinese patents CN1482178A, CN1970639A, CN103252225A, CN103102700A have disclosed that titanium dioxide is added to asphalt materials to make it contact with automobile exhaust to purify the harmful gas. However, the followi...

AI Technical Summary

Problems solved by technology

However, the following technical problems exist in the above-mentioned prior art: (1) titanium dioxide is a photocatalyst, and after mixing with asphalt, most of the titanium dioxide is in the bulk phase of the pitch, and only part of the titanium dioxide is exposed on the surface, which leads to insufficient utilization of the titanium dioxide ; (2) Although titanium dioxide is a photocatalytic material, for ordinary titanium dioxide, ultraviolet light is usually required to excite it for photocatalysis, which leads to low catalytic efficiency of titanium dioxide under visible light; (3) The focus of most researches It lies in the removal of automobile exhaust. However, asphalt pavement also produces volatile gases in special circumstances such as summer. While paying attention to the purification of automobile exhaust, the exhaust gas produced by pavement materials is ignored, resulting in the inability to coordinate governance

[0003] Regarding the above technical problems, although it is possible to spray a liquid containing titanium dioxide on the road surface to make it act on the asphalt surface to improve the utilization rate of the photocatalyst, and to modify the titanium dioxide to achieve photocatalysis under visible light, none of the above methods can Better response to asphalt volatilized gas

Images