Purification system and purification method for asphalt smoke

Abstract

The invention discloses a purification system and a purification method for asphalt smoke. The purification system comprises a production system, a material storage device, a mixed adsorption device,a dust collection device, a material returning device, a desulfurizer and an output device, wherein the production system is used for producing a finished product and generating the asphalt smoke; thematerial storage device is used for storing and outputting sintered coke powder; the mixed adsorption device is used for using the sintered coke powder to adsorb volatile components inside the asphalt smoke and forming used coke powder, and forming sulfurous gas after the volatile components are adsorbed by the asphalt smoke; the dust collection device is used for separating the used coke powderand the sulfurous gas inside a low toxicity mixture; the material returning device is used for outputting the used coke powder to the material storage device; the desulfurizer is used for removing sulfur dioxide inside the sulfurous gas to generate non-toxic gas; and the output device is used for discharging the non-toxic gas to the outside. The purification system has the advantages and beneficial effects that various environmental protection output problems of the volatile components, sulfur dioxide and dust particulate matters inside the asphalt smoke can be solved at the same time, so thatthe purification effect and purification efficiency of the asphalt smoke are improved, secondary pollution is avoided from being generated, and the economic value is improved.

Description

technical field [0001] The invention relates to the field of environmental protection, in particular to an asphalt flue gas purification system and a purification method. Background technique [0002] The production process of carbon anodes for electrolytic aluminum needs to go through processes such as calcination-kneading paste-forming-roasting, etc. The roasting flue gas contains a large amount of asphalt fume, and the asphalt fume contains sulfur dioxide, volatile matter and dust Particulate matter, while the volatile matter mainly contains indirect carcinogens benzopyrene and tar. At present, spray towers are generally used in China to cool down and remove dust from asphalt flue gas, and then pass the cooled flue gas into an electric tar collector for collection. The main problems of this process method are: ①The collection efficiency of the electric tar collector has very strict requirements on the flue gas temperature, which is difficult to control, resulting in unsta...

AI Technical Summary

Problems solved by technology

This technical solution can simultaneously solve the environmental protection output problems of volatile matter, sulfur dioxide and dust particles in asphalt flue gas, and improve the purification effect and purification efficiency of asphalt flue gas;

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