Asphalt tank truck unloading asphalt flue gas purification and dust removal structure

Abstract

The utility model discloses an asphalt tank truck unloading asphalt flue gas purification and dust removal structure which comprises a flue gas guide ring and a treatment box. The smoke guide ring is characterized in that n-shaped seats are arranged on the outer cambered surface of the smoke guide ring in an annular array mode, supporting legs are rotationally connected between two vertical plate bodies of each n-shaped seat, the upper surfaces of the supporting legs make contact with the lower surfaces of horizontal plate bodies of the adjacent n-shaped seats, a feeding hole is formed in the middle of a top plate of the smoke guide ring, and a cavity is formed in the smoke guide ring; smoke inlet holes are evenly formed in the inner wall of the cavity, and a smoke conveying pipe is arranged on the outer side wall of the cavity. The inner wall of a through hole formed in the middle of the left side wall of the treatment box is fixedly connected with the outer surface of the right end of the smoke conveying pipe. The asphalt tank truck unloading asphalt smoke purification and dust removal structure is good in asphalt smoke collection effect, the asphalt smoke is purified through multiple purification modes, the asphalt smoke purification effect is improved, and environmental pollution is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas treatment, in particular to a structure for purifying and removing dust from asphalt smoke when unloading an asphalt tank truck. Background Art

[0002] Asphalt fume refers to a mixed smoke of liquid and solid hydrocarbon particles and a small amount of gaseous hydrocarbon substances formed during the production, processing and use of asphalt and its asphalt products. The composition of asphalt fume is complex, mainly including carbon ring hydrocarbons, cyclic hydrocarbon derivatives and other compounds, such as benzopyrene, benzanthracene, carbazole, dibenzofuran, 4-formylbiphenyl, phenanthridine, etc. These harmful substances can be inhaled into the body through the respiratory tract, posing a serious threat to human health. In the existing technology, the asphalt fume generated during the production and paving of asphalt is usually collected and treated. However, these treatment equipment are usually large in size and are not suitable for occasions with small amounts of asphalt fume. Therefore, the asphalt fume generated during the unloading process of asphalt tankers is generally discharged directly. However, since the unloading process is time-consuming and the harmful substances in the asphalt fume are not easily decomposed in the atmosphere, this part of the fume will also pollute the surrounding environment and affect the health of people around. For this reason, we propose an asphalt fume purification and dust removal structure for unloading asphalt tankers. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide an asphalt fume purification and dust removal structure for asphalt tanker unloading, which has a good collection effect on asphalt fume, purifies the asphalt fume through a variety of purification methods, improves the purification effect of the asphalt fume, and can effectively solve the problems in the background technology.

[0004] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: an asphalt fume purification and dust removal structure for unloading asphalt from an asphalt tank truck, comprising a fume guide ring and a treatment box;

[0005] Smoke guide ring: Its outer arc surface annular array is provided with a convex seat, and support legs are rotatably connected between the two vertical plates of the convex seat. The upper surfaces of the support legs are in contact with the lower surfaces of the adjacent horizontal plates of the convex seat. A feed hole is provided in the middle of the top plate of the smoke guide ring. The interior of the smoke guide ring is provided with a cavity, and the inner wall of the cavity is evenly provided with smoke inlet holes. The outer wall of the cavity is provided with a smoke conveying pipe.

[0006] Treatment box: The inner wall of the through hole arranged in the middle of its left side wall is fixedly connected to the outer surface of the right end of the smoke conveying pipe. The interior of the treatment box is provided with an installation chamber, a chemical treatment chamber and an adsorption chamber from left to right. Two fixed frames are plugged into the left end of the interior of the installation chamber. The interiors of the two fixed frames are fixedly connected with filter screens. The inner diameter of the filter screen on the right is smaller than that of the filter screen on the left. An induced draft fan is plugged into the right end of the interior of the installation chamber. A guide pipe 1 is provided in the middle of the left side plate of the chemical treatment chamber. The left end of the guide pipe 1 is connected to the right end of the interior of the installation chamber. The right end of the guide pipe 1 passes through the treatment chamber. The top plate of the box extends to the lower end of the interior of the chemical treatment chamber. A second guide pipe is provided in the middle of the right side plate of the chemical treatment chamber. The right end of the second guide pipe is connected to the left end of the interior of the adsorption chamber. The left end of the second guide pipe passes through the top plate of the treatment box and extends to the upper end of the interior of the chemical treatment chamber. An activated carbon adsorption plate is inserted into the interior of the adsorption chamber. An air outlet pipe is provided on the right side wall of the adsorption chamber. The air outlet pipe extends to the outside of the treatment box, which has a good collection effect on asphalt fume and reduces diffusion to the outside. The asphalt fume is purified by multiple purification methods to improve the purification effect of the asphalt fume.

[0007] Furthermore, the support legs are telescopic support legs, which are easy to adjust in length to adapt to feed ports of different diameters of external asphalt receiving tanks.

[0008] Furthermore, an L-shaped sleeve is rotatably connected to the interior of the upper end of the feed hole of the smoke guide ring, so as to facilitate connection with the unloading pipe of the asphalt tanker.

[0009] Furthermore, valves are connected in series in the middle of the first and second flow guide pipes located above the outside of the treatment box to prevent the alkaline solution inside the chemical treatment chamber from entering the installation chamber or the adsorption chamber.

[0010] Furthermore, it also includes an aeration plate, which is arranged on the inner bottom surface of the chemical treatment chamber. The top plate array of the aeration plate is provided with aeration holes. The right end of the guide pipe passes through the side wall of the aeration plate and extends to the interior of the aeration plate, thereby improving the gas dispersion effect and expanding the contact area between the flue gas and the alkali solution.

[0011] Furthermore, a liquid inlet pipe is provided at the upper end of the front side wall of the treatment box, and a liquid outlet pipe is provided at the lower end of the front side wall of the treatment box. The rear ends of the liquid inlet pipe and the liquid outlet pipe extend into the interior of the chemical treatment chamber. The middle parts of the liquid inlet pipe and the liquid outlet pipe are connected in series with control valves to facilitate the replacement of the alkali solution inside the chemical treatment chamber.

[0012] Furthermore, the bottom plate of the cavity and the fixing plates evenly arranged on the outer arc surface of the smoke guide ring are detachably connected by bolts, which facilitates cleaning of the inner wall of the cavity.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: The asphalt tank truck unloading asphalt fume purification and dust removal structure of the present utility model has the following advantages:

[0014] 1. Insert the discharge port of the discharge pipe of the asphalt tank truck into the inside of the L-shaped sleeve from the upper end of the L-shaped sleeve, and start the induced draft fan. When the induced draft fan works, a negative pressure is formed at the left end inside the installation cavity. The air below the smoke guiding ring enters the inside of the cavity through the smoke inlet holes of the smoke guiding ring, and the air enters the inside of the installation cavity through the smoke transmission pipe. The asphalt fumes generated during the unloading process of the asphalt tank truck enter the inside of the installation cavity along with the flow of the air below the smoke guiding ring, with good collection effect on the asphalt fumes and reduced diffusion to the outside.

[0015] 2. The asphalt fumes are filtered through the filter screen to remove the dust particles with larger diameters inside, and then are dispersed into uniform small bubbles and enter the inside of the lye after passing through the air holes of the aeration plate. The sulfur dioxide in the asphalt fumes is absorbed by the lye, and the activated carbon inside the activated carbon adsorption plate adsorbs and filters the harmful substances such as benzene, ethyl acetate and chloroform remaining in the asphalt fumes. The asphalt fumes are purified through multiple purification methods, improving the purification effect on the asphalt fumes and reducing environmental pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the present utility model;

[0017] Figure 2 is a schematic cross-sectional plane structural diagram of the present utility model.

[0018] In the figure: 1 smoke guiding ring, 101 cavity, 2 smoke transmission pipe, 3 treatment box, 4 installation cavity, 5 fixed frame, 51 filter screen, 6 induced draft fan, 7 chemical treatment cavity, 8 adsorption cavity, 9 activated carbon adsorption plate, 10 diversion pipe one, 11 diversion pipe two, 12 aeration plate, 13 L-shaped sleeve, 14 U-shaped seat, 15 support leg, 16 liquid inlet pipe, 17 liquid outlet pipe, 18 valve, 19 air outlet pipe. SPECIFIC EMBODIMENTS

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0020] Please refer to Figure 1-2 , this embodiment provides a technical solution: The asphalt tank truck unloading asphalt fume purification and dust removal structure includes a smoke guiding ring 1 and a treatment box 3;

[0021] Smoke guide ring 1: Its outer arc surface annular array is provided with a convex seat 14, and the two vertical plates of the convex seat 14 are rotatably connected with support legs 15. The upper surfaces of the support legs 15 are respectively in contact with the lower surfaces of the adjacent horizontal plates of the convex seat 14. The support legs 15 are overlapped on the upper surface of the feed port of the external asphalt receiving tank, so that the smoke guide ring 1 is located directly above the feed port of the external asphalt receiving tank. The support legs 15 are telescopic support legs, which are easy to adjust in length to adapt to the feed ports of different diameters of the external asphalt receiving tank. A feed hole is provided in the middle of the top plate of the smoke guide ring 1 The upper end of the feed hole of the smoke guide ring 1 is rotatably connected to an L-shaped sleeve 13. The discharge port of the unloading pipe of the asphalt tank truck is inserted into the interior of the L-shaped sleeve 13 from the upper end of the L-shaped sleeve 13 to guide the asphalt. A cavity 101 is provided inside the smoke guide ring 1. The inner wall of the cavity 101 is evenly provided with smoke inlet holes, and the outer wall of the cavity 101 is provided with a smoke conveying pipe 2. The bottom plate of the cavity 101 and the fixed plates evenly provided on the outer arc surface of the smoke guide ring 1 are detachably connected by bolts. The bottom plate of the cavity 101 is opened regularly to clean the inner wall of the cavity 101.

[0022] Treatment box 3: The inner wall of the through hole set in the middle of its left side wall is fixedly connected to the outer surface of the right end of the smoke conveying pipe 2. The interior of the treatment box 3 is provided with an installation chamber 4, a chemical treatment chamber 7 and an adsorption chamber 8 from left to right. Two fixed frames 5 are inserted into the left end of the interior of the installation chamber 4. The interiors of the two fixed frames 5 are fixedly connected with filter screens 51. The asphalt smoke is filtered through the filter screens 51 to remove smoke particles with larger internal diameters. The inner diameter of the mesh of the filter screen 51 on the right is smaller than the inner diameter of the mesh of the filter screen 51 on the left, and the asphalt smoke is subjected to secondary filtration to improve the filtering effect. The right end of the interior of the installation chamber 4 is inserted with an induced draft fan 6. When the induced draft fan 6 is started, the induced draft fan 6 works to form a negative pressure at the left end of the interior of the installation chamber 4, and the air below the smoke guide ring 1 enters through the smoke inlet hole of the smoke guide ring 1. The air enters the interior of the cavity 101, and enters the interior of the installation cavity 4 through the smoke conveying pipe 2. A guide pipe 10 is provided in the middle of the left side plate of the chemical treatment chamber 7. The left end of the guide pipe 10 is connected to the right end of the interior of the installation cavity 4, and the right end of the guide pipe 10 passes through the top plate of the treatment box 3 and extends to the lower end of the interior of the chemical treatment chamber 7. A guide pipe 2 11 is provided in the middle of the right side plate of the chemical treatment chamber 7. The right end of the guide pipe 2 11 is connected to the left end of the interior of the adsorption chamber 8, and the left end of the guide pipe 2 11 passes through the top plate of the treatment box 3 and extends to the upper end of the interior of the chemical treatment chamber 7. The guide pipes 10 and 11 are both connected in series with valves 18 in the middle of the parts above the outside of the treatment box 3 to prevent the alkali solution inside the chemical treatment chamber 7 from entering the interior of the installation cavity 4 or the adsorption cavity 8. An activated carbon adsorption plate 9 is inserted into the adsorption chamber 8. The activated carbon inside the activated carbon adsorption plate 9 adsorbs and filters harmful substances such as benzene, ethyl acetate and chloroform remaining in the asphalt fume, thereby improving the purification effect of the asphalt fume. An air outlet pipe 19 is provided on the right side wall of the adsorption chamber 8. The air outlet pipe 19 extends to the outside of the treatment box 3. A liquid inlet pipe 16 is provided at the upper end of the front side wall of the treatment box 3. A liquid outlet pipe 17 is provided at the lower end of the front side wall of the treatment box 3. The rear ends of the liquid inlet pipe 16 and the liquid outlet pipe 17 extend to the interior of the chemical treatment chamber 7. The middle parts of the liquid inlet pipe 16 and the liquid outlet pipe 17 are connected in series with control valves to facilitate the replacement of the alkali solution inside the chemical treatment chamber 7.

[0023] Among them: it also includes an aeration plate 12, the aeration plate 12 is arranged on the inner bottom surface of the chemical treatment chamber 7, the top plate array of the aeration plate 12 is provided with aeration holes, and the right end of the guide pipe 10 passes through the side wall of the aeration plate 12 and extends to the interior of the aeration plate 12, thereby improving the gas dispersion effect and expanding the contact area between the flue gas and the alkali solution.

[0024] The working principle of the asphalt fume purification and dust removal structure provided by the utility model for asphalt tanker unloading is as follows:

[0025] The support legs 15 are overlapped on the upper surface of the feed port of the external asphalt receiving tank so that the smoke guide ring 1 is located directly above the feed port of the external asphalt receiving tank, and the discharge pipe outlet of the asphalt tank truck is inserted into the interior of the L-shaped sleeve 13 from the upper end of the L-shaped sleeve 13, the control valve connected in series in the middle of the liquid inlet pipe 16 is opened, and alkali solution is added to the interior of the chemical treatment chamber 7 through the liquid inlet pipe 16, and the two valves 18 are opened respectively, and the induced draft fan 6 is started. The induced draft fan 6 works to form a negative pressure at the left end of the interior of the installation chamber 4, and the air below the smoke guide ring 1 enters the interior of the cavity 101 through the smoke inlet hole of the smoke guide ring 1, and the air enters the interior of the installation chamber 4 through the smoke conveying pipe 2. The asphalt smoke generated during the unloading process of the asphalt tank truck enters the interior of the installation chamber 4 with the flow of air below the smoke guide ring 1. Under the gravitational action of the induced draft fan 6, the asphalt smoke is filtered through the filter 51 to remove the smoke particles with larger diameter inside, and then is transported to the exposure chamber 7 through the guide pipe 10. Inside the air disk 12, the filtered asphalt flue gas is dispersed into uniform small bubbles after passing through the aeration holes of the aeration disk 12 and enters the inside of the alkali solution. The sulfur dioxide in the asphalt flue gas is absorbed by the alkali solution, and the asphalt flue gas with sulfur dioxide removed passes through the left end of the guide pipe 2 11 and enters the inside of the adsorption chamber 8. The activated carbon inside the activated carbon adsorption plate 9 adsorbs and filters harmful substances such as benzene, ethyl acetate and chloroform remaining in the asphalt flue gas, thereby improving the purification effect of the asphalt flue gas. The purified clean gas is discharged to the outside through the outlet pipe 19. The top plate of the treatment box 3 is divided into three parts. The top plate of the treatment box 3 is located directly above the installation chamber 4 and the adsorption chamber 8. The parts are detachably connected to the treatment box 3 by fixing bolts, which is convenient for regularly removing the filter 51 and the activated carbon adsorption plate 9 for cleaning and maintenance. The top plate of the treatment box 3 is located directly above the chemical treatment chamber 7 and is fixedly connected to the treatment box 3 by welding to prevent leakage of the internal alkali solution.

[0026] The above are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. Asphalt fume purification and dust removal structure for unloading asphalt from asphalt tank trucks, characterized by: It comprises a smoke guide ring (1) and a processing box (3); A smoke guide ring (1): a circular array of an outer arc surface is provided with a convex seat (14), two vertical plates of the convex seat (14) are rotatably connected with a support leg (15), the upper surface of the support leg (15) is respectively in contact with the lower surface of the adjacent horizontal plate of the convex seat (14), a feed hole is provided in the middle of the top plate of the smoke guide ring (1), a cavity (101) is provided inside the smoke guide ring (1), the inner wall of the cavity (101) is evenly provided with smoke inlet holes, and the outer wall of the cavity (101) is provided with a smoke conveying pipe (2); A treatment box (3): the inner wall of a through hole arranged in the middle of its left side wall is fixedly connected to the outer surface of the right end of the smoke conveying pipe (2); the interior of the treatment box (3) is provided with an installation chamber (4), a chemical treatment chamber (7) and an adsorption chamber (8) from left to right in sequence; two fixed frames (5) are inserted into the left end of the interior of the installation chamber (4); the interiors of the two fixed frames (5) are fixedly connected with a filter screen (51); the inner diameter of the mesh of the filter screen (51) on the right side is smaller than the inner diameter of the mesh of the filter screen (51) on the left side; an induced draft fan (6) is inserted into the right end of the interior of the installation chamber (4); a flow guide pipe (10) is provided in the middle of the left side plate of the chemical treatment chamber (7); the flow guide pipe (10) The left end is connected to the right end of the interior of the installation chamber (4); the right end of the guide pipe 1 (10) passes through the top plate of the treatment box (3) and extends to the lower end of the interior of the chemical treatment chamber (7); a guide pipe 2 (11) is provided in the middle of the right side plate of the chemical treatment chamber (7); the right end of the guide pipe 2 (11) is connected to the left end of the interior of the adsorption chamber (8); the left end of the guide pipe 2 (11) passes through the top plate of the treatment box (3) and extends to the upper end of the interior of the chemical treatment chamber (7); an activated carbon adsorption plate (9) is inserted into the interior of the adsorption chamber (8); an air outlet pipe (19) is provided on the right side wall of the adsorption chamber (8); and the air outlet pipe (19) extends to the outside of the treatment box (3).

2. The asphalt fume purification and dust removal structure for unloading asphalt from an asphalt tank truck according to claim 1 is characterized by: The supporting legs (15) are telescopic supporting legs.

3. The asphalt fume purification and dust removal structure for unloading asphalt from an asphalt tank truck according to claim 1 is characterized by: An L-shaped sleeve (13) is rotatably connected inside the upper end of the feed hole of the smoke guide ring (1).

4. The asphalt fume purification and dust removal structure for unloading asphalt from an asphalt tanker according to claim 1 is characterized by: The middle parts of the flow guide pipe 1 (10) and the flow guide pipe 2 (11) located above the outside of the processing box (3) are both connected in series with valves (18).

5. The asphalt fume purification and dust removal structure for unloading asphalt from an asphalt tanker according to claim 1 is characterized by: It also includes an aeration plate (12), which is arranged on the inner bottom surface of the chemical treatment chamber (7), and the top plate array of the aeration plate (12) is provided with aeration holes, and the right end of the guide pipe (10) passes through the side wall of the aeration plate (12) and extends to the interior of the aeration plate (12).

6. The asphalt fume purification and dust removal structure for unloading asphalt from an asphalt tank truck according to claim 1 is characterized by: A liquid inlet pipe (16) is provided at the upper end of the front side wall of the treatment box (3), and a liquid outlet pipe (17) is provided at the lower end of the front side wall of the treatment box (3). The rear ends of the liquid inlet pipe (16) and the liquid outlet pipe (17) extend into the interior of the chemical treatment chamber (7), and control valves are connected in series in the middle of the liquid inlet pipe (16) and the liquid outlet pipe (17).

7. The asphalt fume purification and dust removal structure for unloading asphalt from an asphalt tank truck according to claim 1 is characterized by: The bottom plate of the cavity (101) and a fixing plate evenly arranged on the outer arc surface of the smoke guide ring (1) are detachably connected via bolts.

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