Apparatus and method for purifying modified asphalt waste gas through catalytic oxidation method

Abstract

The invention discloses an apparatus and a method for purifying modified asphalt waste gas through a catalytic oxidation method. The apparatus mainly comprises an atomization device, an adsorption device, an oxidant mixed-flow device, an oxidation device, a catalysis device and a fan. According to the present invention, modified asphalt waste gas is atomized by the atomization device, particulatematters are removed from the atomized modified asphalt waste gas by the adsorption device, an oxidant and the waste gas are completely mixed by the oxidant mixed-flow device, an oxidation reaction isperformed in the oxidation device, and finally the obtained material is conveyed to the catalysis device, such that the oxidant and the water perform deep oxidation on organic matters under the actionof the catalyst, wherein the clean gas is externally discharged by the fan; the particulate matters in the atomized modified asphalt waste gas are easy to capture, such that the dust removing effectis significant; the oxidant is subjected to the catalytic treatment so as to substantially improve the oxidation performance; the capture of the particulate matters prolongs the service life of the catalysis device while the generation of the secondary pollutant is substantially reduced; the investment cost and the use cost are reduced; and the increasingly stringent emission standards and regulations are met.

Description

technical field [0001] The invention relates to the field of environmental engineering waste gas treatment, in particular to a device and method for purifying modified asphalt waste gas by catalytic oxidation. Background technique [0002] In recent years, with the rapid development of various industries in our country, the use of modified asphalt materials has also increased significantly, and the treatment of modified asphalt waste gas has gradually received attention. Modified asphalt waste gas mainly includes asphalt tar, asphalt smoke, liquid tar, gaseous tar, aromatic hydrocarbons and heterocyclic compounds and other unpleasant gases, as well as dust and small molecular substances generated during the powder addition process. Modified asphalt waste gas has the characteristics of heavy odor and long service life of polycyclic aromatic hydrocarbons. [0003] At present, the main treatment methods for modified asphalt waste gas are: spraying + ultraviolet photolysis, hig...

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Problems solved by technology

[0006] In order to solve the problem that the existing modified asphalt waste gas purification technology is not compatible with the environmental quality standards and regulations of the new era, and the purification effect is not thorough, a device and method for purifying modified asphalt waste gas by catalytic oxidation is proposed, which is suitable for the current Treatment and improvement of waste gas with modified asphalt, dust removal effect is obvious, non-methane total hydrocarbons are greatly reduced, and deodorization effect is significantly improved

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