Environment-friendly treatment system for flue gas of finished product lane of asphalt mixing equipment

Abstract

The utility model belongs to the technical field of flue gas treatment, and particularly relates to an asphalt mixing equipment finished product lane flue gas environment-friendly treatment system which comprises a lane outer sealing cover, a smoke suction system, an asphalt flue gas treatment system and an environment-friendly cloth bag dust removal system, and the smoke suction system is installed in the lane outer sealing cover. According to the environment-friendly treatment system for the flue gas of the finished product lane of the asphalt mixing equipment, when the asphalt mixing plant works, the asphalt mixing plant is covered by the lane outer sealing cover, so that the lane is sealed to prevent the flue gas from leaking; dust flue gas generated during stirring of the asphalt stirring station and flue gas generated after finished asphalt products are finished are sucked into the main flue gas pipe through cooperation of operation of the smoke suction fan and the smoke suction pipeline; and the dust flue gas and the asphalt flue gas are respectively conveyed to the environment-friendly cloth bag dust removal system and the asphalt flue gas treatment system for separate treatment under the control of a pneumatic butterfly valve, so that the flue gas generated by the asphalt mixing plant is treated, and the environment is prevented from being polluted.

Description

Technical Field

[0001] This utility model belongs to the field of flue gas treatment technology, specifically relating to an environmental protection treatment system for flue gas from asphalt mixing equipment's finished product lane. Background Technology

[0002] With the rapid development of my country's expressways, asphalt pavement is widely used. Asphalt pavement refers to various types of road surfaces constructed by incorporating road-grade asphalt materials into mineral materials. Asphalt binders enhance the ability of paving aggregates to resist damage from traffic and natural factors, resulting in a smooth, dust-free, impermeable, and durable surface. Therefore, asphalt pavement is one of the most widely used high-grade road surfaces in road construction.

[0003] Asphalt mixing plants are one of the key pieces of equipment in the production of asphalt mixtures. However, the flue gas generated by asphalt mixing plants currently pollutes the environment, and they also face problems such as noise pollution, dust pollution, asphalt fume pollution, and solid waste pollution. This seriously pollutes environmental engineering and poses a serious threat to the personal safety of surrounding workers. Utility Model Content

[0004] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is to provide an environmental protection treatment system for the flue gas of the finished lane of asphalt mixing equipment, which can treat the flue gas generated by the asphalt mixing plant and prevent environmental pollution.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: an environmental protection treatment system for flue gas from an asphalt mixing plant's finished product lane, including an outer lane cover, a smoke extraction system, an asphalt flue gas treatment system, and an environmental protection bag filter dust collection system. The smoke extraction system is installed inside the outer lane cover and is connected to both the asphalt flue gas treatment system and the environmental protection bag filter dust collection system. The smoke extraction system includes a smoke extraction pipe, a smoke extraction fan, and a main smoke extraction pipe. The smoke extraction pipe is installed inside the outer lane cover, and the smoke extraction fan is installed inside the smoke extraction pipe. The main smoke extraction pipe is connected to the smoke extraction pipe, and both ends of the main smoke extraction pipe are connected to both the asphalt flue gas treatment system and the environmental protection bag filter dust collection system. Pneumatic butterfly valves are installed at both ends of the main smoke extraction pipe.

[0006] The lane exterior enclosure includes a steel structure frame, a high-speed rolling shutter door, and multiple color-coated panels. The steel structure frame is erected on the lane, the high-speed rolling shutter door is installed on the steel structure frame to form an entrance / exit, and the multiple color-coated panels are installed on the steel structure frame and cooperate with the high-speed rolling shutter door to form an enclosed space.

[0007] Sliding windows are installed on the color-coated panels.

[0008] The asphalt fume treatment system includes a spray tower group, a centrifugal demister, a low-temperature plasma device, a UV photocatalytic oxidation device, and an induced draft fan. The spray tower group is connected to the main flue pipe, and the spray tower group, centrifugal demister, low-temperature plasma device, UV photocatalytic oxidation device, and induced draft fan are connected in sequence.

[0009] The spray tower group includes a primary square rotary spray tower and a secondary square rotary spray tower. The primary square rotary spray tower is connected to the main flue, and the secondary square rotary spray tower is connected to the primary square rotary spray tower.

[0010] The environmentally friendly bag filter dust collection system includes an air inlet duct, a bag filter dust collector, and a dust discharge device. The air inlet duct is connected to the main flue, the bag filter dust collector is connected to the air inlet duct, and the dust discharge device is installed below the bag filter dust collector.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] This utility model discloses an environmental protection system for treating exhaust gas from an asphalt mixing plant's finished product lane. During operation, the asphalt mixing plant is covered by an outer hood to prevent exhaust gas leakage. A suction fan, in conjunction with a suction pipe, draws the dust and exhaust gas generated during mixing and the exhaust gas generated after the asphalt is finished into the main exhaust pipe. A pneumatic butterfly valve controls the separation of the dust and exhaust gas into an environmentally friendly bag filter system and an asphalt exhaust gas treatment system for separate processing, thus treating the exhaust gas generated by the asphalt mixing plant and preventing environmental pollution. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the environmental protection treatment system of this utility model;

[0014] Figure 2 This is a schematic diagram of the smoking system of this utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the lane outer cover of this utility model;

[0016] Figure 4 This is a schematic diagram of the asphalt fume treatment system of this utility model;

[0017] Figure 5 This is a schematic diagram of the structure of the environmentally friendly bag dust removal system of this utility model.

[0018] Marked in the diagram: 1. Lane exterior enclosure; 101. Steel structure frame; 102. High-speed roller shutter door; 103. Color-coated steel sheet; 104. Sliding window;

[0019] 2. Smoke extraction system; 201. Smoke extraction duct; 202. Smoke extraction fan; 203. Main smoke duct; 204. Pneumatic butterfly valve;

[0020] 3. Asphalt fume treatment system; 301. Spray tower assembly; 302. Centrifugal demister; 303. Low-temperature plasma equipment; 304. UV photocatalytic oxidation equipment; 305. Exhaust fan;

[0021] 4. Environmentally friendly bag filter dust collection system; 401. Air inlet duct; 402. Bag filter dust collector; 403. Dust discharge device. Detailed Implementation

[0022] To make the above-mentioned features and advantages of this utility model more apparent and understandable, specific embodiments are described below in conjunction with the accompanying drawings for detailed explanation.

[0023] like Figures 1-5 As shown, this embodiment provides an environmental protection system for the exhaust gas treatment of asphalt mixing plant's finished product lane, including an outer lane cover 1, an exhaust system 2, an asphalt exhaust gas treatment system 3, and an environmental protection bag filter dust collection system 4. The exhaust system 2 is installed inside the outer lane cover 1 and is connected to both the asphalt exhaust gas treatment system 3 and the environmental protection bag filter dust collection system 4. The exhaust system 2 includes an exhaust pipe 201, an exhaust fan 202, and a main exhaust pipe 203. The exhaust pipe 201 is installed inside the outer lane cover 1, the exhaust fan 202 is installed inside the exhaust pipe 201, and the main exhaust pipe 203 is connected to the exhaust pipe 201. Both ends of the main exhaust pipe 203 are connected to both the asphalt exhaust gas treatment system 3 and the environmental protection bag filter dust collection system 4, and pneumatic butterfly valves 204 are installed at both ends of the main exhaust pipe 203. When the asphalt mixing plant is in operation, the asphalt mixing plant is covered by the lane outer cover 1, thereby sealing the lane and preventing the leakage of fumes. The smoke extraction fan 202, in conjunction with the smoke extraction pipe 201, draws the dust and fumes generated during the mixing process and the fumes generated after the asphalt is finished into the main smoke pipe 203. The dust and fumes and the asphalt fumes are then transferred to the environmental protection bag dust collection system 4 and the asphalt fume treatment system 3 for separate treatment through the control of the pneumatic butterfly valve 204, thereby treating the fumes generated by the asphalt mixing plant and preventing environmental pollution.

[0024] Furthermore, the lane exterior enclosure 1 includes a steel frame 101, a high-speed rolling shutter door 102, and multiple color-coated steel panels 103. The steel frame 101 is erected on the lane, the high-speed rolling shutter door 102 is installed on the steel frame 101 to form an entrance / exit, and the multiple color-coated steel panels 103 are installed on the steel frame 101 and cooperate with the high-speed rolling shutter door 102 to form a closed space. Specifically, sliding windows 104 are installed on the color-coated steel panels 103. The lane is enclosed by the steel frame 101, the high-speed rolling shutter door 102, and the multiple color-coated steel panels 103. The finished lane is isolated from the outside airflow to prevent the escape of smoke, and the high-speed rolling shutter door 102 facilitates vehicle entry and exit, while the sliding windows 104 provide good lighting inside the lane.

[0025] Furthermore, the asphalt fume treatment system 3 includes a spray tower group 301, a centrifugal demister 302, a low-temperature plasma device 303, a UV photocatalytic oxidation device 304, and an induced draft fan 305. The spray tower group 301 is connected to the main flue duct 203, and the spray tower group 301, centrifugal demister 302, low-temperature plasma device 303, UV photocatalytic oxidation device 304, and induced draft fan 305 are sequentially connected. Specifically, the spray tower group 301 includes a primary square rotary spray tower and a secondary square rotary spray tower. The primary square rotary spray tower is connected to the main flue duct 203, and the secondary square rotary spray tower is connected to the primary square rotary spray tower. Asphalt fume is fed into the spray tower group 301, where the blades generate rotation and centrifugal motion to remove dust from the fume. The dust-removed fume enters the centrifugal demister 302, where oil and fume separation is achieved, and then it enters the low-temperature plasma device 303, where it is treated at the corona electrode (negative electrode). A high DC voltage is applied between the corona electrode and the precipitation electrode, causing the corona electrode to discharge. The flue gas is ionized to generate a large number of positive and negative ions. As the positive and negative ions move towards the corona electrode and the precipitation electrode, they encounter tar droplets and become charged. The droplets are attracted by the electrodes, and the smoke dust is basically removed. Finally, the flue gas enters the UV photocatalytic oxidation device 304. When the exhaust gas passes through the device, it is decomposed by ultraviolet light and plasma electric field. At the same time, various active free radicals and ecological oxygen generated by photocatalysis and plasma collide with molecules in the smoke and a series of elementary physicochemical reactions occur, decomposing or reducing the odorous gases in the smoke molecules into low-molecular-weight harmless substances. Non-methane total hydrocarbons and malodorous gases in the exhaust gas are degraded and removed under high-energy bombardment and oxidation by active substances. Finally, the exhaust gas is discharged in compliance with emission standards using the induced draft fan 305.

[0026] Furthermore, the environmentally friendly baghouse dust collection system 4 includes an air inlet duct 401, a baghouse dust collector 402, and a dust discharge device 403. The air inlet duct 401 is connected to the main flue duct 203, the baghouse dust collector 402 is connected to the air inlet duct 401, and the dust discharge device 403 is installed below the baghouse dust collector 402. Dust-laden flue gas enters the air inlet duct 401 and then enters the baghouse dust collector 402 for dust removal. The dust is discharged through the dust discharge device 403.

[0027] The foregoing has shown and described the basic principles and main features of this invention, as well as its advantages. Those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this invention. Various changes and modifications can be made to this invention without departing from its spirit and scope. All such changes and modifications fall within the scope of this invention as defined by the appended claims and their equivalents.

Claims

1. An environmental protection system for treating flue gas from asphalt mixing plant finished product lanes, characterized in that: The application relates to a road sealing device, which comprises a road sealing cover, a smoke suction system, an asphalt smoke treatment system and an environment-friendly cloth bag dust removal system.

2. The system for treating flue gas from an asphalt mixing plant according to claim 1, characterized in that: The road sealing cover comprises a steel structure frame, a quick rolling door and a plurality of color plates.

3. The system for treating flue gas from an asphalt mixing plant according to claim 2, wherein: The color plates are provided with sliding windows.

4. The system for treating flue gas from an asphalt mixing plant according to claim 1, wherein: The asphalt smoke treatment system comprises a spray tower group, a centrifugal mist removal tank, a low-temperature plasma device, a UV light oxygen catalytic device and an induced draft fan.

5. The system for treating flue gas from an asphalt mixing plant according to claim 4, wherein: The spray tower group comprises a first square rotary spray tower and a second square rotary spray tower.

6. The system for treating flue gas from an asphalt mixing plant according to claim 1, wherein: The environment-friendly cloth bag dust removal system comprises an air inlet pipeline, a cloth bag dust remover and a powder discharge device. The air inlet pipeline is communicated with the main smoke pipe. The cloth bag dust remover is communicated with the air inlet pipeline. The powder discharge device is arranged below the cloth bag dust remover.

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