Pitch hot mix plant recycling tail gas treatment device and method

Abstract

The invention relates to the technical field of tail gas treatment, in particular to a pitch hot mix plant recycling tail gas treatment device and method. The pitch hot mix plant recycling tail gas treatment device comprises a recycling drying drum, a primary drying drum and a flue gas transmission device; the flue gas transmission device comprises a flue gas separator, an ash discharging valve, a mixing chamber and an induced draft fan, the flue gas separator comprises an air inlet, an air outlet and an ash discharging port, the air inlet is connected with the recycling drying drum, the air outlet is connected with the induced draft fan, the ash discharging port is connected with the mixing chamber through the ash discharging valve, the induced draft fan blows air from one side of the mixing chamber, and the other side, opposite to the induced draft fan, of the mixing chamber is connected with the primary drying drum. According to the pitch hot mix plant recycling tail gas treatment device and method, the vast majority of dust particles can not enter a draught fan, the draught fan is protected, dust is automatically removed, the labor cost is reduced, the service life of equipment is long, and long-term continuous operation can be achieved.

Description

technical field [0001] The invention relates to the technical field of tail gas treatment, in particular to an asphalt plant mixed heat regeneration tail gas treatment device and method. Background technique [0002] With the rapid development of asphalt pavement construction in my country and a large number of high-grade pavement needs to be rebuilt and repaired, the milling and reuse of old asphalt pavement has been highly valued and widely concerned. Plant-mixed heat regeneration is the most widely used and most mature regeneration technology. A large amount of exhaust gas will be generated during the production process. Generally, the exhaust gas generated during the heating and drying process of recycled materials will be forced into the front end of the original drying drum burner through the induced draft fan, and then Combustion to achieve the purpose of tail gas treatment, thermal regeneration tail gas contains a lot of dust and flammable asphalt smoke, if it is pum...

AI Technical Summary

Problems solved by technology

With the existing asphalt thermal regeneration exhaust gas treatment device, as the treatment progresses, the dust and asphalt fume are coated and agglomerated on the filter device, and the treatment efficiency gradually decreases. It is necessary to manually clean or replace the filter device regularly, which cannot be achieved continuously. Production and processing costs are high

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