CN202595596U - A waste gas treatment system for asphalt concrete recycling equipment - Google Patents

Abstract

The utility model relates to an asphalt mixing plant field especially relates to an asphalt concrete regeneration facility exhaust treatment system, this exhaust treatment system and regeneration drying drum intercommunication, its characterized in that: including regeneration smoke box, one-level dust remover, draught fan and primary dry dust pelletizing system, through the flue intercommunication between regeneration smoke box, one-level dust remover, draught fan and the primary dry dust pelletizing system, the waste gas of getting rid of by regeneration drying drum loops through and gets into primary dry dust pelletizing system behind regeneration smoke box, one-level dust remover, the draught fan. This kind of exhaust-gas treatment system, with the help of the effect of one-level dust remover and draught fan, can effectively deposit the granule composition that regeneration facility waste gas is wrapped up in with pitch, with this avoid inside the granule gets into the draught fan to cause the wearing and tearing of draught fan blade and high-speed rotation, friction to catch fire, guarantee the fail safe nature of overall equipment work.

Description

A waste gas treatment system for asphalt concrete recycling equipment

technical field

The utility model relates to the field of asphalt concrete mixing equipment, in particular to a waste gas treatment system of asphalt concrete regeneration equipment.

Background technique

As the early asphalt pavement enters the stage of overall repair and reconstruction, a large amount of asphalt recycled materials will be produced. At present, under the guidance of relevant national departments, the recycled asphalt material adopts a more energy-saving and environmentally friendly regeneration process, and the more commonly used one is the thermal regeneration process.

The thermal regeneration process is to heat the asphalt recycled material to soften the asphalt and achieve the purpose of regeneration. However, in the process of heating the asphalt recycled material, due to the heating of the asphalt, blue smoke that is harmful to organisms will be produced, and the blue smoke must be strictly controlled. At present, the common methods of filtering the exhaust gas of regeneration equipment are: 1. Directly introduce liquid filtration; 2. Directly introduce the dust collector of the original equipment; 3. Introduce the drying drum of the original equipment for secondary combustion. The first method requires a large amount of available liquid, and the reliability of filtration is not high; the second method will rapidly increase the dust removal ability of the original equipment, and at the same time, the pollution of the original dust collector is more serious; the advantage of the third method is in Under the action of the induced draft fan, the regenerated exhaust gas is directly introduced into the original equipment for secondary combustion, which can effectively protect the environment. However, since the exhaust gas contains particles coated with asphalt, the particles entering the inside of the induced draft fan will cause damage to the blades of the induced draft fan. Abrasion and high speed rotation, friction and fire. If the asphalt-coated particle components cannot be effectively prevented from entering the inside of the induced draft fan, the safety and reliability of the overall equipment cannot be guaranteed.

Utility model content

In order to solve the above problems, the utility model provides a waste gas treatment system of asphalt concrete regeneration equipment, which is connected with the regeneration drying drum, and is characterized in that it includes a regeneration smoke box, a primary dust collector, an induced draft fan and a primary drying Dust removal system, the regenerative smoke box, primary dust collector, induced draft fan and primary drying dust removal system are connected through a flue, and the exhaust gas discharged by the regeneration drying drum passes through the regeneration smoke box, primary dust collector, and induced draft fan in turn and then enters the primary Dry dust extraction system.

Further, the flue includes a first flue connecting the regenerative smoke box and the primary dust collector, a second flue connecting the primary dust collector and the induced draft fan, and a third flue connecting the induced draft fan and the original dry dust removal system .

The utility model has the following beneficial effects:

According to the exhaust gas treatment system of asphalt concrete recycling equipment provided by the utility model, with the help of the first-stage dust collector and the induced draft fan, it can effectively precipitate the asphalt-coated particle components in the exhaust gas of the regeneration equipment, so as to prevent the particles from entering the inside of the induced draft fan , resulting in the wear of the induced draft fan blades and high-speed rotation, friction and fire, ensuring the safety and reliability of the overall equipment work.

Description of drawings

Below in conjunction with accompanying drawing, the utility model is described in further detail.

Fig. 1 is a schematic structural diagram of an exhaust gas treatment system of an asphalt concrete regeneration equipment according to a specific embodiment of the present invention.

Detailed ways

In order to better understand the technical solution of the utility model, the embodiments provided by the utility model will be described in detail below in conjunction with the accompanying drawings.

Referring to Figure 1, the waste gas treatment system 1 of the asphalt concrete regeneration equipment of the present utility model is connected with the regeneration drying drum 2, and the equipment waste gas treatment system 1 includes a regeneration smoke box 11, a primary dust collector 12, an induced draft fan 13 and a primary drying and dust removal system 14. The regenerative smoke box 11 communicates with the primary dust collector 12 through the first flue 15, the primary dust collector 12 communicates with the induced draft fan 13 via the second flue 16, and the induced draft fan 13 communicates with the original dry dust removal system 14 through the third flue Road 17 connects. The waste gas discharged from the regenerative drying drum 2 passes through the regenerative smoke box 11, the first-stage dust collector 12, and the induced draft fan 13 in turn, and then enters the primary drying and dust removal system 14.

Referring to Figure 1, the specific working conditions of the exhaust gas treatment system of the asphalt concrete recycling equipment are as follows:

When the asphalt concrete regeneration equipment is working, waste gas will be generated in the regeneration drying drum 2, which mainly includes blue smoke and particles coated with asphalt, etc., and the waste gas passes through the regeneration smoke box in turn under the negative pressure of the induced draft fan 13 11. The first flue 15, the primary dust collector 12, and the second flue 16 are discharged into the third flue 17 and the original dry dust removal system 14 for secondary combustion and dust removal, which has the effect of dust removal and environmental protection. The asphalt-coated particle components in the exhaust gas can be effectively precipitated under the action of the first-stage dust collector 12, so as to prevent the particles from entering the inside of the induced draft fan 13, thereby causing the blades of the induced draft fan to wear, rotate at high speed, and cause fire due to friction , to ensure the safety and reliability of the overall system work.

The above is only a preferred embodiment of the utility model, so the scope of implementation of the utility model cannot be limited with this, that is, the equivalent changes and modifications made according to the patent scope of the utility model and the content of the specification should still belong to the utility model. Within the scope covered by the utility model patent.

Claims (2)

1. A waste gas treatment system for asphalt concrete recycling equipment, the waste gas treatment system is connected with the regeneration drying drum, and is characterized in that: it includes a regeneration smoke box, a first-stage dust collector, an induced draft fan and a primary drying and dust removal system, and the regeneration smoke box , the first-stage dust collector, the induced draft fan and the primary drying and dust removal system are connected through the flue, and the exhaust gas discharged by the regenerative drying drum passes through the regeneration smoke box, the first-stage dust collector, and the induced draft fan in sequence, and then enters the primary drying and dust removal system. 2. The exhaust gas treatment system of asphalt concrete regeneration equipment according to claim 1, characterized in that: the flue includes a first flue connecting the regeneration smoke box and the first-stage dust collector, and a first flue connecting the first-stage dust collector and the induced draft fan. The second flue, the third flue connecting the induced draft fan and the original drying dust removal system.