Asphalt production flue gas multi-stage filtering device

Abstract

The utility model provides an asphalt production flue gas multi-stage filtering device, which comprises a base and a filtering pipeline arranged on the base, the filtering pipeline comprises a plurality of transverse pipe sections arranged side by side, every two adjacent transverse pipe sections are communicated with each other through a right-angle turning section in sequence, and the transverse pipe sections are communicated with each other through the right-angle turning section. Pipe openings of the transverse pipe sections located at the two ends are each provided with a pipeline connector, and waterproof honeycomb activated carbon is arranged in each transverse pipe section in a blocking mode. The multistage filtering device for the asphalt production flue gas has the advantages of being scientific in design, good in treatment effect on main harmful components of the asphalt flue gas, free of open fire potential safety hazards and high in practicability.

Description

Technical Field

[0001] The utility model relates to an asphalt mixing station, in particular to a multi-stage filtering device for asphalt production smoke. Background Art

[0002] Asphalt mixing plant, also known as asphalt mixing plant, is a complete set of equipment used for batch production of asphalt concrete. Asphalt concrete is an asphalt mixture formed by mixing various specifications of aggregates (sand, stone), binders (asphalt or residual oil) and fillers (mineral powder) in a certain proportion. The harmful asphalt fume produced by asphalt mixing plant has complex components, mainly including alkane derivatives, sulfur-containing and nitrogen-containing compounds, polycyclic aromatic hydrocarbons (PAHs), heterocyclic and black smoke particles. It is produced in multiple locations such as mixing system, finished product warehouse, loading station, etc., which is highly harmful to the environment and human body.

[0003] At present, asphalt mixing plants mostly use bag filters or burners to treat harmful asphalt fumes. The former has a good effect on treating black smoke particles, but has a poor effect on alkane derivatives, sulfur-containing and nitrogen-containing compounds, polycyclic aromatic hydrocarbons (PAHs), etc., and cannot control the emission of volatile organic compounds; the latter requires additional fuel consumption, has high operating costs, and has open flame safety hazards.

[0004] In order to solve the above problems, people have been seeking an ideal technical solution. Summary of the invention

[0005] The purpose of the utility model is to address the deficiencies of the prior art and thus provide a multi-stage filtration device for asphalt production flue gas which has a scientific design, good treatment effect on the main harmful components of asphalt flue gas, no open flame safety hazards, and strong practicality.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a multi-stage filtration device for asphalt production flue gas, including a base and a filtration pipe installed on the base, the filtration pipe includes a plurality of transverse pipe sections arranged side by side, two adjacent transverse pipe sections are interconnected through right-angle turning sections in sequence, and pipe joints are provided at the pipe openings of the transverse pipe sections at both ends, and waterproof honeycomb activated carbon is intercepted in each of the transverse pipe sections.

[0007] Based on the above, two locking frames are arranged on the inner wall of each of the horizontal tube sections, the waterproof honeycomb activated carbon is clamped between the two locking frames, and the horizontal tube section is provided with a filling port above the waterproof honeycomb activated carbon, and a sealing cover is detachably installed on the filling port; after opening the sealing cover, the waterproof honeycomb activated carbon can be replaced from the filling port.

[0008] Based on the above, a total of five transverse pipe sections are provided.

[0009] Based on the above, wheels with brakes are installed at the bottom of the base.

[0010] Based on the above, the center of the bottom of the base is installed on a turntable, and the filter pipe is a centrally symmetrical structure relative to the center of the base.

[0011] The utility model has substantial characteristics and progress compared with the prior art. Specifically, the filter pipe in the utility model is connected to the air outlet of the traditional bag dust collector through a pipe joint. The asphalt flue gas first passes through the bag dust collector to remove black smoke particles, and the remaining volatile organic matter enters the filter pipe. The multiple waterproof honeycomb activated carbons perform multi-stage adsorption and filtration on the gas to absorb all the volatile organic matter, thereby improving the treatment effect. The utility model has the advantages of scientific design, good treatment effect on the main harmful components of asphalt flue gas, no open flame safety hazards, and strong practicality.

[0012] Furthermore, by providing the two snap-fit ​​frames, it is convenient to fix the position of the waterproof honeycomb activated carbon, and by providing the filling port and the sealing cover, it is convenient to replace the waterproof honeycomb activated carbon.

[0013] Furthermore, the closer the waterproof honeycomb activated carbon is to the air inlet end, the more impurities it adsorbs and the easier it is to fail. By providing the wheel with brakes or the turntable, the direction of the filter pipe can be turned, and another pipe joint can be replaced to connect to the air outlet of the traditional bag dust collector, so that each waterproof honeycomb activated carbon can be fully utilized and replaced together after they fail, thereby reducing the replacement frequency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a top view of the multi-stage filtering device for asphalt production smoke in the utility model.

[0015] Figure 2 It is a schematic diagram of the installation structure of the waterproof honeycomb activated carbon in the utility model.

[0016] Figure 3 It is a side view of the multi-stage filtration device for asphalt production flue gas in Example 1.

[0017] Figure 4 It is a side view of the multi-stage filtration device for asphalt production flue gas in Example 2.

[0018] In the figure: 1. Base; 2. Horizontal pipe section; 3. Right-angle turn section; 4. Pipe joint; 5. Waterproof honeycomb activated carbon; 6. Snap-fit ​​frame; 7. Filling port; 8. Sealing cover; 9. Wheels with brakes; 10. Turntable. DETAILED DESCRIPTION

[0019] The technical solution of the utility model is further described in detail below through specific implementation methods. Example 1

[0020] like Figure 1-3 As shown, a multi-stage filtration device for asphalt production flue gas includes a base 1 and a filtration pipe installed on the base 1, the filtration pipe includes five transverse pipe sections 2 arranged side by side, two adjacent transverse pipe sections 2 are interconnected through right-angle turning sections 3 in sequence, and pipe joints 4 are provided at the pipe openings of the transverse pipe sections 2 at both ends. Waterproof honeycomb activated carbon 5 is intercepted in each of the transverse pipe sections 2. This patent adopts the common waterproof honeycomb activated carbon 5 on the market, and its appearance is a rectangular structure.

[0021] During specific use, the asphalt flue gas first passes through a traditional bag dust collector to remove black smoke particles, and the filter pipe is connected to the air outlet of the traditional bag dust collector through a pipe joint 4. The remaining volatile organic matter enters the filter pipe, and the waterproof honeycomb activated carbon 5 performs five-level adsorption and filtration on the gas to absorb all the volatile organic matter, and finally the clean air is discharged from another pipe joint 4.

[0022] The waterproof honeycomb activated carbon 5 is a consumable item. In order to facilitate its replacement, two locking frames 6 are arranged on the inner wall of each of the horizontal pipe sections 2. The waterproof honeycomb activated carbon 5 is clamped between the two locking frames 6. The horizontal pipe section 2 is provided with a filling port 7 above the waterproof honeycomb activated carbon 5. A sealing cover 8 is detachably installed on the filling port 7. After opening the sealing cover 8, the waterproof honeycomb activated carbon 5 can be replaced from the filling port 7.

[0023] In order to facilitate the full utilization of each waterproof honeycomb activated carbon 5, a wheel with a brake 9 is installed at the bottom of the base 1; the closer the waterproof honeycomb activated carbon 5 is to the air inlet end, the more impurities it adsorbs and the easier it is to fail. By reversing the direction of the filter pipe, another pipe joint 4 can be replaced to connect to the air outlet of the traditional bag dust collector, so as to fully utilize each waterproof honeycomb activated carbon 5 and replace them together after they fail, thereby reducing the replacement frequency. Example 2

[0024] like Figure 4 As shown, the difference between this embodiment and embodiment 1 is that the bottom center of the base 1 is installed on a turntable 10, and the filter pipe is a centrally symmetrical structure relative to the center of the base 1; thus, by rotating 180°, the two pipe joints 4 can be swapped.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the utility model, which should be included in the scope of the technical solution for protection of the utility model.

Claims

1. A multi-stage filtration device for flue gas in asphalt production, characterized in that: It includes a base and a filtering pipe installed on the base, the filtering pipe includes a plurality of transverse pipe sections arranged side by side, two adjacent transverse pipe sections are interconnected through right-angle turning sections in sequence, pipe joints are arranged at the pipe openings of the transverse pipe sections at both ends, and waterproof honeycomb activated carbon is arranged in each transverse pipe section.

2. The multi-stage filtration device for asphalt production flue gas according to claim 1, characterized in that: Two locking frames are arranged on the inner wall of each of the horizontal tube sections, and the waterproof honeycomb activated carbon is clamped between the two locking frames. The horizontal tube section is provided with a filling port above the waterproof honeycomb activated carbon, and a sealing cover is detachably installed on the filling port; after opening the sealing cover, the waterproof honeycomb activated carbon can be replaced from the filling port.

3. The multi-stage filtration device for asphalt production flue gas according to claim 2, characterized in that: There are five transverse pipe sections in total.

4. The multi-stage filtration device for asphalt production flue gas according to any one of claims 1 to 3, characterized in that: Wheels with brakes are installed at the bottom of the base.

5. The multi-stage filtration device for asphalt production flue gas according to claim 3 is characterized in that: The center of the bottom of the base is installed on a turntable, and the filter pipe is a centrally symmetrical structure relative to the center of the base.

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