A modified asphalt tail gas purification treatment system and method

Abstract

The application relates to the tail gas purification technical field, and particularly discloses a modified asphalt tail gas purification treatment system and method, which comprises a purification box, a gas feeding pipe and a gas outlet pipe communicated with the inner cavity of the purification box, and a gas permeation plate, a spraying group, a liquid guiding assembly and a liquid supply assembly arranged on the purification box. The gas permeation plate is arranged in the purification box, and a plurality of gas permeation grooves for passing tail gas are formed in the side surface of the gas permeation plate; the spraying group is provided with a plurality of spraying groups, each spraying group comprises a plurality of rotating nozzles arranged on the side wall of the gas permeation plate, and the rotating axes of the rotating nozzles intersect with the vertical direction; the liquid guiding assembly is provided with a plurality of liquid guiding assemblies corresponding to the plurality of spraying groups, is used for guiding the spraying liquid sprayed upwards by the rotating nozzles, and makes the spraying liquid after being guided form a rain curtain on the surface of the gas permeation plate; and the liquid supply assembly is used for supplying liquid to the plurality of rotating nozzles. The application has the effect that the sprayed spraying liquid and the tail gas contact multiple times, so that the spraying liquid can adsorb and purify the asphalt tail gas multiple times.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of tail gas purification technology, in particular to a modified asphalt tail gas purification treatment system and method. BACKGROUND

[0002] Modified asphalt is a kind of asphalt binder made by adding rubber, resin, polymer and other admixtures, or taking measures such as mild oxidation of asphalt, so that the performance of asphalt or asphalt mixture is improved. In the production and processing of asphalt, it is often necessary to continuously heat and stir asphalt and its admixtures, etc. during the processing, and tail gas containing suspended particles, oil fume and toxic aromatic compounds will be generated during the processing. In order to reduce the impact of tail gas on the environment, it is often necessary to purify the tail gas of modified asphalt.

[0003] The method commonly used in the industry at present is spray purification of tail gas. For example, a waste gas spray tower is used for spray treatment of tail gas. The waste gas spray tower usually has a spray pipe suspended therefrom, and a plurality of spray heads are fixed on the spray pipe. When the tail gas is introduced into the waste gas spray tower, the plurality of spray heads in the waste gas spray tower spray downward the tail gas with spray liquid, so that the spray liquid captures and filters the impurities in the tail gas. However, due to the small spray range of the spray head, the contact process between the downward sprayed spray liquid and the tail gas is relatively short, so that the capture effect of the spray liquid on the impurities is limited, and the purification effect of the waste gas spray tower is poor. SUMMARY

[0004] In order to improve the purification effect of the spray liquid on the asphalt tail gas, the present application provides a modified asphalt tail gas purification treatment system and method.

[0005] The modified asphalt tail gas purification treatment system provided by the present application adopts the following technical scheme:

[0006] A modified asphalt tail gas purification treatment system and method, comprising a purification tank, a gas inlet pipe and a gas outlet pipe communicating with the inner cavity of the purification tank, wherein the purification tank is provided with: a gas permeable plate arranged in the purification tank and located between the gas inlet pipe and the gas outlet pipe, a plurality of gas permeable grooves for passing tail gas are arranged on the plate surface of the gas permeable plate in the vertical direction; a plurality of spray groups are arranged corresponding to the plurality of gas permeable grooves, each spray group comprises a plurality of rotating nozzles arranged on the gas permeable plate, the rotating axis of the rotating nozzle intersects with the vertical direction, and a gap is left between the liquid outlet of the rotating nozzle and the side surface of the gas permeable plate; a plurality of liquid guide assemblies are arranged corresponding to the plurality of spray groups, for guiding the spray liquid sprayed to the liquid guide assembly, and forming a rain curtain on at least one side of the gas permeable plate; a liquid supply assembly is connected with the spray group, for supplying liquid to the rotating nozzle.

[0007] By adopting the technical scheme, when the asphalt tail gas is purified, the flowing asphalt tail gas enters the purification box through the gas conveying pipe and is purified, and then the purified tail gas is discharged through the gas outlet pipe. During the tail gas purification process, first, the tail gas passes through the gas permeation groove on the gas permeation plate, liquid supply assembly is arranged to supply liquid to the rotating nozzle, and then the rotating nozzle sprays and purifies the tail gas on one side of the gas permeation plate, so that the impurities in the tail gas are greatly reduced. At the same time, the spray liquid sprayed onto the gas permeation groove is guided by the liquid guide assembly, so that part of the spray liquid forms a first rain curtain on the surface of the gas permeation plate after the first purification of the tail gas, so as to purify the tail gas passing through the gas permeation groove again. In addition, the rain curtain formed at the upper liquid guide assembly will continue to flow to the lower liquid guide assembly under the action of gravity, and then flow out from the upper surface of the horizontal plate in the lower liquid guide assembly to form a second rain curtain for filtering the tail gas. The arrangement effectively increases the contact frequency and contact range of the spray liquid and the tail gas, and improves the purification effect of the spray liquid on the asphalt tail gas.

[0008] Optionally, the liquid guide assembly comprises: a horizontal plate arranged on the surface of the gas permeation plate and located above the corresponding gas permeation groove, the lower surface of the horizontal plate has an inclination angle greater than 0 between the horizontal plane, and the orthogonal projection of the rotating nozzle on the horizontal plane is located in the orthogonal projection of the horizontal plate on the horizontal plane; and a guide plate arranged on the side wall of the gas permeation plate and located between the gas permeation groove and the horizontal plate, the distance between the side face of the guide plate away from the surface of the gas permeation plate and the gas permeation plate is less than the distance between the rotating nozzle and the side face of the gas permeation plate, and a plurality of liquid outlet holes for the spray liquid to pass through are arranged on the upper end face of the guide plate.

[0009] By adopting the technical scheme, the horizontal plate can block the droplets sprayed upward by the rotating nozzle, and then part of the blocked spray liquid moves to the surface of the gas permeation plate under the guidance of the inclined surface of the horizontal plate and its own inertia, and then the spray liquid slides downward along the surface of the gas permeation plate under the pushing of the subsequent spray liquid and its own gravity. When the spray liquid slides to the guide plate, part of the spray liquid will flow out through the liquid outlet holes on the guide plate, thereby forming a rain curtain for strengthening the purification of the tail gas.

[0010] Optionally, the lower surface of the horizontal plate is fixedly provided with a mounting strip at the side wall of the gas permeation plate, and a plurality of limiting strips are fixedly arranged on the surface of the mounting strip, and the arrangement direction of the plurality of limiting strips is consistent with the extension direction of the horizontal plate.

[0011] By adopting the technical scheme, when the spray liquid sprayed by the rotating nozzle reaches the horizontal plate, the moving direction of part of the spray liquid often has a certain angle with the surface of the horizontal plate. In order to avoid the spray liquid from moving along the surface of the horizontal plate to the end of the horizontal plate and accumulating under the action of its own inertia, a plurality of limiting strips are arranged to intermittently block the spray liquid, so as to reduce the concentrated accumulation of the spray liquid and facilitate the spray liquid to form a more uniform rain curtain on the surface of the gas permeation plate.

[0012] Optionally, the air-permeable plate surface is provided with a plurality of drainage channels at the installation strip, and the outer wall of the installation strip is provided with a plurality of perforations; the horizontal plate is slidably installed on the air-permeable plate, and the purification box is provided with a driving assembly for driving the horizontal plate to move so as to align or misalign the perforations with the drainage holes.

[0013] By adopting the above technical scheme, the driving assembly can drive the limiting strip to move, so that the perforations on the installation strip are in communication with the drainage channels, and thus when the spray liquid is guided to the installation strip, the spray liquid can also flow through the perforations and the drainage channels into the air-permeable groove, so that the inner wall of the air-permeable groove is wetted and cleaned by the spray liquid.

[0014] Optionally, the driving assembly comprises an adjusting rod, an elastic member and a linear power member; the adjusting rod is located at an inner side wall of the purification box, and a pressing block is fixed to the side surface of the adjusting rod and provided with an inclined surface facing the horizontal plate; the linear power member is fixed to the purification box and connected to the adjusting rod for driving the adjusting rod to slide up and down so as to press the horizontal plate by the inclined surface of the pressing block; and the elastic member is arranged on the side of the installation strip away from the push plate and used for elastically connecting the installation strip and the inner wall of the purification box.

[0015] By adopting the above technical scheme, the linear power member can drive the adjusting rod to move, so that the pressing block presses the horizontal plate, the installation strip moves away from the adjusting rod, and the perforations are in communication with the drainage channels; when the linear power member drives the adjusting rod to move reversely so that the pressing block no longer presses the horizontal plate, the installation strip moves under the restoring force of the elastic member, so that the horizontal plate returns to the original position, the perforations are misaligned with the drainage channels, and the drainage channels are closed.

[0016] Optionally, the outer circumferential upper edge of the flow guide plate is fixedly provided with a flange, and a storage cavity is formed between the flange and the flow guide plate.

[0017] By adopting the above technical scheme, the storage cavity is formed between the flange and the flow guide plate, so that the flowing spray liquid is pre-stored in the storage cavity, and the spray liquid in the storage cavity flows out through the liquid outlet hole and forms a stable rain curtain.

[0018] Optionally, the air-permeable groove is curvedly extended at the side surface of the air-permeable plate, and a plurality of rotary nozzles in the spray group are misaligned and arranged on both sides of the extension direction of the air-permeable groove.

[0019] By adopting the above technical scheme, the air-permeable groove is curvedly extended, which can effectively increase the passing area of the tail gas, and the misaligned arrangement of the plurality of rotary nozzles can uniformly spray and purify the tail gas at the air-permeable groove.

[0020] Optionally, an air blower is arranged outside the purification tank, an air outlet end of the air blower is communicated with the purification tank, and the air outlet end of the air blower faces the air outlet pipe.

[0021] By adopting the above technical scheme, the air blower can adjust the flow speed of the tail gas in the purification tank, and improve the purification efficiency of the tail gas.

[0022] Optionally, a filter screen is arranged on the air inlet end of the air blower.

[0023] By adopting the above technical scheme, the filter screen can filter the tail gas introduced into the purification tank by the air blower, so as to ensure that the air introduced into the purification tank is clean.

[0024] On the other hand, the application also provides a modified asphalt tail gas purification method, which comprises the following steps: supplying liquid to a rotating nozzle through a liquid supply assembly; and introducing modified asphalt tail gas into the air inlet pipe.

[0025] By adopting the above technical scheme, during use, the rotating nozzle sprays the spraying liquid to adsorb and filter the impurities in the tail gas passing through the air permeable groove; then the spraying liquid sprayed upward by the rotating nozzle is blocked by the horizontal plate, and then the blocked spraying liquid flows downward along the surface of the air permeable plate, and then the spraying liquid flowing through the liquid outlet holes of the flow guide plate forms a first rain curtain for filtering the tail gas on the surface of the air permeable plate; and the rain curtain formed at the upper liquid guide assembly continuously flows to the lower liquid guide assembly under the action of gravity, and then flows out from the upper surface of the horizontal plate in the lower liquid guide assembly to form a second rain curtain for filtering the tail gas.

[0026] In summary, the application has at least one of the following beneficial technical effects:

[0027] 1. The liquid supply assembly supplies liquid to the rotating nozzle, and then the rotating nozzle sprays the tail gas on one side of the air permeable plate to greatly reduce the impurities in the tail gas. At the same time, the spraying liquid sprayed above the air permeable groove is guided by the liquid guide assembly, so that part of the spraying liquid is purified once, and then forms a rain curtain on the surface of the air permeable plate to purify the tail gas again, thereby increasing the contact times and contact range of the spraying liquid and the tail gas, and improving the purification effect of the spraying liquid on the asphalt tail gas.

[0028] 2. The horizontal plate can block the droplets sprayed upward by the rotating nozzle, and then part of the blocked spraying liquid moves to the surface of the air permeable plate under the guidance of the inclined surface of the horizontal plate and its own inertia, and then the spraying liquid slides downward along the surface of the air permeable plate under the action of the subsequent spraying liquid and its own gravity, and when the spraying liquid slides to the flow guide plate, part of the spraying liquid flows out from the liquid outlet holes on the flow guide plate, thereby forming a rain curtain for strengthening the purification of the tail gas.

[0029] 3. The driving assembly is arranged to drive the mounting strip to move, so that the perforations on the mounting strip are communicated with the drainage channel, and when the spray liquid is drained to the mounting strip, the spray liquid can also flow through the perforations and the drainage channel to the air permeable groove, so that the inner wall of the air permeable groove is wetted and cleaned by the spray liquid. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a schematic diagram of the overall structure of the embodiment of the present application;

[0031] Figure 2 is a schematic diagram showing the internal structure of the purification tank;

[0032] Figure 3 is a schematic diagram showing the structure of the air permeable plate, the driving assembly and the rotating spray head;

[0033] Figure 4 is a schematic diagram of the cross-sectional structure of the air permeable plate;

[0034] Figure 5 is a schematic diagram of the structure of the liquid supply assembly and the rotating spray head.

[0035] Reference signs: 1, purification tank; 11, air supply pipe; 12, air outlet pipe; 13, liquid discharge pipe; 2, air permeable plate; 21, air permeable groove; 22, drainage channel; 3, spray group; 31, rotating spray head; 4, liquid guide assembly; 41, horizontal plate; 411, sliding block; 42, flow guide plate; 421, liquid outlet hole; 422, flange; 43, mounting strip; 431, perforation; 44, limiting strip; 5, liquid supply assembly; 51, liquid supply pump; 52, liquid inlet pipe; 53, liquid outlet main pipe; 54, liquid outlet branch pipe; 6, driving assembly; 61, adjusting rod; 611, pressing block; 62, elastic member; 63, linear power member; 7, air blower; 71, filter screen; 8, controller; 9, electric control liquid supply head. DETAILED DESCRIPTION

[0036] The following will be described in detail in combination with the accompanying drawings Figures 1-5 The present application will be further described in detail.

[0037] The embodiment of the present application discloses a modified asphalt tail gas purification treatment system. Referring to Figure 1 , Figure 2 and Figure 3The modified asphalt tail gas purification treatment system comprises a purification tank 1, a gas feeding pipe 11 and a gas outlet pipe 12 communicated with the inner cavity of the purification tank 1, and a gas permeation plate 2, a spraying group 3, a liquid guiding assembly 4 and a liquid supply assembly 5 arranged on the purification tank 1. The inner bottom wall of the purification tank 1 is communicated with a liquid discharge pipe 13, the gas permeation plate 2 is vertically arranged in the purification tank 1, the peripheral side of the gas permeation plate 2 is sealingly attached to the inner wall of the purification tank 1, and a plurality of gas permeation grooves 21 for tail gas passing are vertically and spaced apart on the side surface of the gas permeation plate 2. The spraying group 3 is provided with a plurality of spraying groups 3 corresponding to the plurality of gas permeation grooves 21, each spraying group 3 comprises a plurality of rotating nozzles 31 arranged on the side wall of the gas permeation plate 2, the rotating axis of the rotating nozzle 31 is perpendicular to the vertical direction, and a gap is left between the liquid outlet of the rotating nozzle 31 and the side surface of the gas permeation plate 2. The liquid guiding assembly 4 is provided with a plurality of liquid guiding assemblies 4 corresponding to the plurality of spraying groups 3, the liquid guiding assembly 4 is used for guiding the spraying liquid sprayed to the liquid guiding assembly 4 to form a rain curtain on at least one side of the gas permeation plate 2. The liquid supply assembly 5 is connected with the spraying group 3 and is used for supplying liquid to the plurality of rotating nozzles 31.

[0038] Specifically, in the embodiment, the gas permeation plate 2 divides the inner cavity of the purification tank 1 into two chambers, so that the flowing tail gas will flow in the direction from the gas feeding pipe 11 to the gas permeation grooves 21 and then to the gas outlet pipe 12. In order to improve the tail gas conveying efficiency at the gas permeation plate 2, the gas permeation grooves 21 are curvedly extended on the side surface of the gas permeation plate 2, so that the length of the gas permeation grooves 21 is greatly extended. The plurality of liquid guiding assemblies 4 and the plurality of spraying groups 3 are located on the same side of the gas permeation plate 2 in the thickness direction. In other embodiments, the plurality of liquid guiding assemblies 4 and the plurality of spraying groups 3 are symmetrically arranged on both sides of the gas permeation plate 2 in the thickness direction. The plurality of rotating nozzles 31 in the spraying group 3 are arranged on both sides of the extension direction of the gas permeation grooves 21.

[0039] Further, referring to Figure 3 and Figure 4 In the embodiment, the liquid guiding assembly 4 comprises a horizontal plate 41 and a flow guiding plate 42, the horizontal plate 41 is arranged on the side wall of the gas permeation plate 2 and located above the gas permeation grooves 21, there is a downward angle greater than 0 between the lower surface of the horizontal plate 41 and the horizontal plane, the orthographic projection of the rotating nozzle 31 on the horizontal plane is located in the orthographic projection of the horizontal plate 41 on the horizontal plane, and the lower surface of the horizontal plate 41 is used for blocking the upward spraying liquid of the rotating nozzle 31. Further, the upper surface of the horizontal plate 41 is inclined downward in the direction from the gas permeation plate 2 to the horizontal plate 41.

[0040] The flow guiding plate 42 is arranged on the side wall of the gas permeation plate 2 and located between the gas permeation grooves 21 and the horizontal plate 41, the distance between the side surface of the flow guiding plate 42 away from the plate surface of the gas permeation plate 2 and the gas permeation plate 2 is less than the distance between the rotating nozzle 31 and the side surface of the gas permeation plate 2, and a plurality of liquid outlet holes 421 for the spraying liquid passing are arranged on the upper end surface of the flow guiding plate 42.

[0041] In another embodiment, the liquid guide assembly 4 comprises a flow guide cover fixed to the side wall of the air permeable plate 2, which is located above the air permeable groove 21, and the lower end surface of the flow guide cover is an inner arc surface for guiding the spraying liquid sprayed by the rotating nozzle 31 to the side wall of the air permeable plate 2.

[0042] Further, with reference to Figure 3 and Figure 4 During the process of the spraying liquid sprayed by the rotating nozzle 31 to the horizontal plate 41, the moving direction of part of the spraying liquid often has a certain angle with the surface of the horizontal plate 41. In order to avoid the spraying liquid moving along the surface of the horizontal plate 41 to the end of the horizontal plate 41 to form accumulation under the action of its own inertia, the lower surface of the horizontal plate 41 is fixedly provided with a mounting strip 43 at the side wall of the air permeable plate 2, and a plurality of limiting strips 44 are fixedly arranged on the surface of the mounting strip 43. The arrangement direction of the plurality of limiting strips 44 is consistent with the extension direction of the horizontal plate 41.

[0043] Further, a flange 422 is fixedly arranged at the outer peripheral upper edge of the flow guide plate 42, and a storage cavity is formed between the flange 422 and the flow guide plate 42. The flowing spraying liquid is pre-stored in the storage cavity, so that the spraying liquid in the storage cavity flows out through the liquid outlet hole 421 and forms a stable rain curtain.

[0044] Further, during the process of the tail gas flowing through the air permeable groove 21, impurities in the tail gas may adhere to the inner wall of the air permeable groove 21. Therefore, in order to wet clean the air permeable groove 21 and further filter the tail gas flowing through the air permeable groove 21, a plurality of drainage channels 22 are arranged on the surface of the air permeable plate 2 at the mounting strip 43, and the outer wall of the mounting strip 43 is provided with a plurality of perforations 431. The horizontal plate 41 is slidingly installed on the air permeable plate 2, and the purification tank 1 is provided with a driving assembly 6 for driving the horizontal plate 41 to move, so as to move the mounting strip 43 by the driving assembly 6, so that the perforations 431 are aligned or staggered with the drainage channels 22.

[0045] Specifically, a sliding groove is arranged on the outer side wall of the air permeable plate 2, and a sliding block 411 is fixed to one side of the horizontal plate 41 and slidingly installed in the sliding groove along the length direction of the air permeable plate 2. In this embodiment, the driving assembly 6 comprises an adjusting rod 61, an elastic member 62 and a linear power member 63. The linear power member 63 can be any one of an electric push rod, an air cylinder or an oil pressure rod. In this embodiment, the linear power member 63 is selected as an electric push rod. The electric push rod is vertically fixed to the outer wall of the upper end of the purification tank 1.

[0046] The adjusting rod 61 is located at an inner side wall of the purification tank 1, the upper end of which penetrates the outer wall of the purification tank 1, and the upper end is fixedly connected with the output end of the electric push rod; a plurality of pressing blocks 611 are fixedly arranged on the side of the adjusting rod 61 along the length direction, and the pressing blocks 611 correspond to the plurality of horizontal plates 41 one by one, and an inclined surface is arranged on the side of the pressing block 611 facing the horizontal plate 41. The elastic member 62 is arranged on the side of the horizontal plate 41 away from the adjusting rod 61, and is used for elastically connecting the horizontal plate 41 and the inner wall of the purification tank 1. The elastic member 62 can be any one of a spring, a spring piece and an elastic pad.

[0047] In another embodiment, the driving assembly 6 includes a plurality of air cylinders, which correspond to the plurality of horizontal plates 41 one by one. The air cylinders are fixed on the purification tank 1, the piston end of the air cylinder is fixedly connected with one end of the horizontal plate 41, and the extension direction of the piston end of the air cylinder is consistent with the sliding direction of the horizontal plate 41.

[0048] Referring to Figure 1 and Figure 2 , considering that the flow rate of the asphalt tail gas flowing from the air supply pipe 11 into the purification tank 1 is relatively slow and relatively constant; therefore, the bottom surface of the purification tank 1 is communicated with a blower 7 on the side close to the air outlet pipe 12 of the air permeable plate 2. The air inlet end of the blower 7 faces the outer wall of the purification tank 1, the air outlet end of the blower 7 faces the air outlet pipe 12, and the blower 7 is covered with a filter screen 71 on the air inlet end of the blower 7. Further, the outer wall of the purification tank 1 is fixedly provided with a controller 8, which is electrically connected with the blower 7, and the controller 8 can control the start and stop of the blower 7 and the blowing intensity.

[0049] Further, referring to Figure 5 , in order to supply liquid to the plurality of rotating nozzles 31, the liquid supply assembly 5 includes a liquid supply pump 51 fixed on the purification tank 1, a liquid inlet pipe 52 connected with the liquid inlet end of the liquid supply pump 51, and a liquid outlet main pipe 53 connected with the liquid outlet end of the liquid supply pump 51. The liquid supply pump 51 is electrically connected with the controller 8, the liquid outlet main pipe 53 is connected with a plurality of liquid outlet branch pipes 54 through an adapter, and the liquid outlet branch pipes 54 are communicated with the liquid inlet ports of the rotating nozzles 31. Further, the liquid inlet pipe 52 is provided with an electrically controlled liquid feeding head 9, which is electrically connected with the controller 8, and the electrically controlled liquid feeding head 9 is loaded with an adding cylinder. The electrically controlled liquid feeding head 9 can be controlled by the controller 8 to open or close the adding cylinder and the liquid inlet pipe 52, and to quantitatively press the cleaning additive or other chemical agents in the adding cylinder into the liquid inlet pipe 52.

[0050] The implementation principle of the modified asphalt tail gas purification treatment system is that when the asphalt tail gas is purified, the flowing asphalt tail gas enters the purification tank 1 through the gas supply pipe 11 for purification treatment, and then the purified tail gas is discharged through the gas discharge pipe 12. During the tail gas purification process, first, the tail gas passes through the gas permeation groove 21 on the gas permeation plate 2, and the liquid supply assembly 5 is arranged to supply liquid to the rotating nozzle 31, and then the rotating nozzle 31 sprays and purifies the tail gas on one side of the gas permeation plate 2, so as to greatly reduce the impurities in the tail gas. At the same time, the spray liquid sprayed above the gas permeation groove 21 is guided by the liquid guide assembly 4, so that part of the spray liquid is purified once, and a first rain curtain is formed on the surface of the gas permeation plate 2 to purify the tail gas passing through the gas permeation groove 21 again. In addition, the rain curtain formed at the upper liquid guide assembly 4 will continue to flow to the lower liquid guide assembly 4 under the action of gravity, and then flow out from the upper surface of the horizontal plate 41 in the lower liquid guide assembly 4 to form a second rain curtain for filtering the tail gas. The arrangement effectively increases the contact frequency and contact range of the spray liquid and the tail gas, and improves the purification effect of the spray liquid on the asphalt tail gas.

[0051] The application also discloses a modified asphalt tail gas purification treatment method. The modified asphalt tail gas purification treatment method comprises the following steps: adjusting the controller 8 to supply liquid to the rotating nozzle 31 through the liquid supply assembly 5; and introducing the modified asphalt tail gas into the gas supply pipe 11.

[0052] The implementation principle of the treatment method is that the liquid supply assembly 5 supplies liquid to the rotating nozzle 31, the rotating nozzle 31 sprays the spray liquid to adsorb and filter the impurities in the tail gas passing through the gas permeation groove 21; then the horizontal plate 41 blocks the spray liquid sprayed upward by the rotating nozzle 31, and then the blocked spray liquid flows down along the surface of the gas permeation plate 2, and then the spray liquid flowing through the liquid outlet hole 421 of the flow guide plate 42 forms a first rain curtain for filtering the tail gas on the surface of the gas permeation plate 2. The rain curtain formed at the upper liquid guide assembly 4 continuously flows to the lower liquid guide assembly 4 under the action of gravity, and then flows out from the upper surface of the horizontal plate 41 in the lower liquid guide assembly 4 to form a second rain curtain for filtering the tail gas.

[0053] The above are preferred embodiments of the application, and do not limit the protection scope of the application, so that: any equivalent changes made according to the structure, shape, principle of the application should be covered within the protection scope of the application.

Claims

1. A modified bitumen off-gas purification treatment system characterized by: The utility model relates to a gas purification device, including the purification tank (1) and the gas pipe (11) and the gas pipe (12) of intercommunication inside chamber of purification tank (1), be provided with on the purification tank (1) The air-permeable plate (2) is arranged in the purification tank (1) and is located between the gas pipe (11) and the gas pipe (12), a plurality of air-permeable grooves (21) for passing tail gas are arranged on the plate surface of the air-permeable plate (2) in the vertical direction; A plurality of spray groups (3) are arranged corresponding to the plurality of air-permeable grooves (21), each spray group (3) comprises a plurality of rotating nozzles (31) arranged on the air-permeable plate (2), the rotating axis of the rotating nozzle (31) intersects with the vertical direction, and a gap is left between the liquid outlet of the rotating nozzle (31) and the side surface of the air-permeable plate (2); A plurality of liquid guide assemblies (4) are arranged corresponding to the plurality of spray groups (3), for guiding the spray liquid sprayed to the liquid guide assembly (4) and forming a rain curtain on at least one side of the air-permeable plate (2); A liquid supply assembly (5) is connected with the spray group (3) for supplying liquid to the rotating nozzle (31); The liquid guide assembly (4) comprises a horizontal plate (41) arranged on the plate surface of the air-permeable plate (2) and located above the corresponding air-permeable groove (21), the lower surface of the horizontal plate (41) has a downward angle greater than 0 between the horizontal plane, and the orthogonal projection of the rotating nozzle (31) on the horizontal plane is located in the orthogonal projection of the horizontal plate (41) on the horizontal plane; A flow guide plate (42) is arranged on the side wall of the air-permeable plate (2) and located between the air-permeable groove (21) and the horizontal plate (41), the distance between the side surface of the flow guide plate (42) away from the plate surface of the air-permeable plate (2) and the air-permeable plate (2) is less than the distance between the rotating nozzle (31) and the side surface of the air-permeable plate (2), and a plurality of liquid outlet holes (421) for passing spray liquid are arranged on the upper end surface of the flow guide plate (42).

2. The modified bitumen off-gas purification system of claim 1, wherein: The lower surface of the horizontal plate (41) is fixedly provided with a mounting strip (43) at the plate surface of the air-permeable plate (2), a plurality of limiting strips (44) are fixedly arranged on the surface of the mounting strip (43), and the arrangement direction of the plurality of limiting strips (44) is consistent with the extension direction of the horizontal plate (41).

3. The modified bitumen off-gas treatment system of claim 2, wherein: A plurality of drainage channels (22) are arranged on the plate surface of the air-permeable plate (2) and communicate with the top surface of the air-permeable groove (21) at the mounting strip (43), and a through hole (431) is arranged on the outer wall of the mounting strip (43); The horizontal plate (41) is slidingly mounted on the air-permeable plate (2), a driving assembly (6) is arranged on the purification tank (1), and the driving assembly (6) is used for driving the horizontal plate (41) to move, so that the through hole (431) is aligned with or staggered with the drainage channel (22).

4. The modified bitumen off-gas treatment system of claim 3, wherein: The driving assembly (6) comprises an adjusting rod (61), an elastic member (62) and a linear power member (63), the adjusting rod (61) is located at one inner side wall of the purification tank (1) and one end of the extension direction of the horizontal plate (41), a pressing block (611) is fixedly arranged on the circumferential side of the adjusting rod (61), and one end of the pressing block (611) close to the horizontal plate (41) is arranged as an inclined surface. The linear power element (63) is fixed to the purification box (1), the linear power element (63) is connected with the adjusting rod (61), and is used for driving the adjusting rod (61) to slide up and down, so that the inclined surface of the pressing block (611) presses the horizontal plate (41). The elastic element (62) is arranged on the side, away from the adjusting rod (61), of the mounting strip (43), and is used for elastically connecting the mounting strip (43) and the inner wall of the purification box (1).

5. The modified bitumen off-gas treatment system of claim 1, wherein: The outer peripheral upper edge of the flow guide plate (42) is fixedly provided with a flange (422), and a storage cavity is formed between the flange (422) and the flow guide plate (42).

6. The modified bitumen off-gas treatment system of claim 1, wherein: The air permeation groove (21) is curvedly extended on the air permeation plate (2), and a plurality of rotating nozzles (31) in the spraying group (3) are arranged on both sides of the air permeation groove (21) in a staggered manner.

7. The modified bitumen off-gas treatment system of claim 1, wherein: The purification box (1) is externally provided with a blower (7), an air outlet end of the blower (7) is communicated with the purification box (1), and the air outlet end of the blower (7) faces the air outlet pipe (12).

8. The modified bitumen off-gas treatment system of claim 7, wherein: The blower (7) is covered with a filter screen (71) at an air inlet end of the blower (7).

9. A method for treating modified bitumen off-gas, based on the system for treating modified bitumen off-gas according to any one of claims 1 to 8, characterized in that: Comprise: Liquid is supplied to the rotating nozzle (31) through the liquid supply assembly (5); Modified asphalt tail gas is introduced into the air supply pipe (11).

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