Tail gas treatment method and device for tar processing

Abstract

The invention discloses a tail gas treatment method and device for tar processing, and relates to the tail gas treatment technology.The tail gas treatment device comprises a discharging pipe and a loading arm used for driving the discharging pipe to be in butt joint with a tank car connector, a butt joint mechanism is installed at a pipe opening of the discharging pipe, and the butt joint mechanism comprises an inner connecting pipe and an outer connecting pipe which are connected in a sleeved mode; an exhaust chamber is formed between the outer side wall of the inner connecting pipe and the inner side wall of the outer connecting pipe and is used for exhausting gas in the tank; according to the tail gas treatment method and device for tar processing, after the external connecting pipe is in butt joint with the tank car connector and sealed, liquid asphalt is output through the internal connecting pipe, and at the moment, gas in the tank and gas volatilized by the liquid asphalt are intensively exhausted to the outdoor environment or the recovery space through the exhaust cavity. Original gas in the asphalt tank truck and a large amount of yellow asphalt smoke volatilized by high-temperature liquid asphalt are treated in a centralized mode, environment pollution is avoided, and the body health of workers can be guaranteed.

Description

Technical Field

[0001] The invention relates to tail gas treatment technology, and in particular to a tail gas treatment method and device for tar processing. Background Art

[0002] Modified asphalt is a product that is modified through processing. It has a higher softening point and coking value. It is a black brittle block solid at room temperature, shiny and smelly, and toxic. Modified asphalt is mainly used in the electrolytic aluminum industry to produce pre-baked anode blocks and manufacture high-power electrode rods. It can also be used as an electrode binder. Due to the high freezing point of modified asphalt, the temperature of liquid modified asphalt needs to be maintained at around 200°C during loading operations. The composition of asphalt flue gas is complex, including common atmospheric pollutants such as particulate dust, carbon monoxide, sulfur dioxide, nitrogen oxides, etc., as well as toxic substances such as benzopyrene, benzanthracene, carbazole, dibenzofuran and 4-formylbiphenyl. Long-term excessive intake of asphalt fumes by the human body can cause symptoms such as dermatitis, conjunctivitis, chest tightness, and headaches. In particular, benzopyrene is a strong carcinogen that seriously endangers human health after entering the human body through the respiratory tract and skin. When existing high-temperature liquid asphalt is loaded into asphalt tank trucks, it is usually driven by a loading arm to drive a loading pipe to connect with the interface on the asphalt tank truck, and then the asphalt is output.

[0003] For example, the patent with the authorization announcement number CN221085118U and the authorization announcement date June 7, 2024, and the name of the patent is a tail gas treatment system for an asphalt storage tank, including an asphalt storage tank, a tail gas condenser, a nitrogen self-operated regulating valve, a pressure regulating valve, a single suction valve and a single exhalation valve. A tail gas condenser is provided above the asphalt storage tank, and the top opening of the tail gas condenser is respectively connected to the single exhalation valve and the pressure regulating valve. The nitrogen inlet pipe is connected to the asphalt storage tank, and a nitrogen self-operated regulating valve and a single suction valve are provided on the nitrogen inlet pipe; the outlet of the pressure regulating valve is connected to the exhaust cleaning tower. The advantages of this patent are: 1) The single suction valve and the single exhalation valve are used as safety measures to avoid accidents of overpressure rupture of the asphalt storage tank; 2) The addition of a tail gas condenser can reduce the tail gas emissions of the asphalt storage tank, reduce the loss of asphalt products, avoid clogging the venturi of the subsequent exhaust cleaning tower, and reduce the amount of new washing oil used in the subsequent exhaust cleaning tower.

[0004] The shortcoming of the existing technology is that during the high-temperature loading process of asphalt, the original gas in the asphalt tanker and the large amount of yellow asphalt smoke volatilized by the high-temperature liquid asphalt will be discharged into the external environment through the interface on the asphalt tanker, causing pollution to the surrounding environment and also damaging the health of the staff around the asphalt tanker. Summary of the invention

[0005] The object of the present invention is to provide a method and device for treating tail gas for tar processing, so as to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A tail gas treatment device for tar processing includes a discharge pipe, a loading arm for driving the discharge pipe to dock with a tank truck interface, a docking mechanism installed at the pipe mouth of the discharge pipe, the docking mechanism includes an inner pipe and an outer pipe that are socketed with each other, an exhaust chamber is formed between the outer wall of the inner pipe and the inner wall of the outer pipe, the inner pipe is used to output liquid asphalt, the outer pipe is used to dock with and seal the tank truck interface, and the exhaust chamber is used to discharge the gas in the tank.

[0008] In the above-mentioned tail gas treatment device for tar processing, the external pipe is connected to a discharge pipe, and the discharge pipe is used to discharge the gas into the external environment.

[0009] In the above-mentioned tail gas treatment device for tar processing, the inner diameter of the external pipe is the same as the inner diameter of the tank truck interface.

[0010] In the above-mentioned tail gas treatment device for tar processing, a stirring unit is installed at the bottom of the inner pipe, an auxiliary air outlet unit is installed at the bottom of the exhaust chamber, and a synchronous driving unit is connected between the stirring unit and the auxiliary air outlet unit.

[0011] The above-mentioned exhaust gas treatment device for tar processing, the stirring unit includes a connecting ring rotatably installed at the bottom of the inner pipe, the inner side of the connecting ring is connected to the inner ring part through a first connecting piece, the inner ring part is located at the bottom of the inner pipe, and a plurality of stirring rods are fixed on the inner wall of the inner ring part along its circumference.

[0012] In the above-mentioned exhaust gas treatment device for tar processing, the auxiliary air outlet unit includes a second connecting piece connected to the outside of a connecting ring, a first outer ring portion is fixedly provided at one end of the second connecting piece close to the exhaust chamber, a plurality of fan blades are arranged on the outer wall of the first outer ring portion along its circumference, and the outer walls of the plurality of fan blades are connected by the second outer ring portion.

[0013] The above-mentioned exhaust gas treatment device for tar processing, the synchronous drive unit includes a connecting rod fixedly connected to the first outer ring part, the top of the connecting rod is fixedly connected to the outer gear ring, the top of the external tube is installed with a drive motor, a connecting shaft is rotatably passed through the external tube, the top of the connecting shaft is connected to the output shaft of the drive motor, the bottom of the connecting shaft extends into the exhaust chamber and is fixed with a drive gear, and the drive gear is meshed with the outer gear ring.

[0014] In the above-mentioned exhaust gas treatment device for tar processing, the fan blades are rotatably connected between the first outer ring portion and the second outer ring portion via a rotating shaft, and a first torsion spring is connected between the rotating shaft and the first outer ring portion.

[0015] In the above-mentioned tail gas treatment device for tar processing, a rubber sealing ring is installed at the bottom of the external pipe, an annular groove is opened at the top of the tank truck interface, and the rubber sealing ring and the annular groove are arranged in a corresponding manner.

[0016] A method for treating tail gas for tar processing, based on the tail gas treatment device for tar processing, comprises the following steps:

[0017] The loading arm drives the discharge pipe to move above the tank truck interface and docks the docking mechanism with the tank truck interface, achieves sealing through the docking of the external pipe with the tank truck interface, and outputs liquid asphalt through the internal pipe.

[0018] In the above technical scheme, the present invention provides a method and device for treating exhaust gas for tar processing. When the external pipe is connected to the tank truck interface and sealed, liquid asphalt is output through the internal pipe. At this time, the gas in the tank and the gas volatilized from the liquid asphalt are discharged to the outdoor environment or recovery space through the exhaust chamber. In this way, the original gas in the asphalt tank truck and the large amount of yellow asphalt fume volatilized from the high-temperature liquid asphalt are centrally treated to avoid polluting the environment and ensure the health of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0020] Figure 1 A schematic diagram of the operation of an exhaust gas treatment device for tar processing provided in one embodiment of the present invention.

[0021] Figure 2 A cross-sectional view of a tail gas treatment device for tar processing provided in one embodiment of the present invention.

[0022] Figure 3 A schematic diagram of the three-dimensional structure of a tail gas treatment device for tar processing provided in another embodiment of the present invention.

[0023] Figure 4 A schematic diagram of a partial three-dimensional structure of an exhaust gas treatment device for tar processing from a first perspective provided in yet another embodiment of the present invention.

[0024] Figure 5 A schematic diagram of a partial three-dimensional structure of an exhaust gas treatment device for tar processing from a second perspective provided in yet another embodiment of the present invention.

[0025] Figure 6 For the present invention Figure 5 A local enlarged view of point X.

[0026] Figure 7 A schematic diagram of the three-dimensional structure of an auxiliary air outlet unit provided in another embodiment of the present invention.

[0027] Figure 8 A cross-sectional view of a tail gas treatment device for tar processing provided in yet another embodiment of the present invention.

[0028] Fig. 9 A cross-sectional view of a tail gas treatment device for tar processing provided in yet another embodiment of the present invention.

[0029] Fig.10 A cross-sectional view of a tail gas treatment device for tar processing provided in another embodiment of the present invention.

[0030] Fig.11 For the present invention Fig.10 A partial enlarged view of point Y.

[0031] Fig.12 A partial three-dimensional structural schematic diagram of an auxiliary air outlet unit and an annular driving cover provided in another embodiment of the present invention.

[0032] Description of reference numerals:

[0033] 1. Inner pipe; 11. Fixed rod; 12. Two-way telescopic member; 13. First connecting block; 14. Second connecting block; 15. Elastic telescopic rod; 16. Friction boss; 17. Annular drive cover; 18. Annular outer edge; 2. External pipe; 21. Sealing slider; 22. Limit spring; 23. Stop plate; 24. Trapezoidal limit block; 25. Spring connecting component; 26. Inclined docking part; 3. Exhaust chamber; 31. Stirring unit; 311. Connecting ring; 312. Inner ring; 313. Stirring rod; 32. Auxiliary air outlet unit; 321. First outer ring; 322. Fan blade; 323. Second outer ring; 324. Rotating shaft; 331. Connecting assembly; 332. Outer gear ring; 333. Drive motor; 334. Connecting shaft; 335. Drive gear; 4. Discharge pipe; 5. Tanker interface. DETAILED DESCRIPTION

[0034] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0035] like Figure 1-12As shown, an embodiment of the present invention provides an exhaust gas treatment device for tar processing, including a discharge pipe, a loading arm for driving the discharge pipe to dock with a tank truck interface 5, a docking mechanism is installed at the pipe mouth of the discharge pipe, and the docking mechanism includes an inner pipe 1 and an outer pipe 2 which are sleeved with each other, and an exhaust chamber 3 is formed between the outer wall of the inner pipe 1 and the inner wall of the outer pipe 2, the inner pipe 1 is used to output liquid asphalt, the outer pipe 2 is used to dock with and seal the tank truck interface 5, and the exhaust chamber 3 is used to concentrate and discharge the gas in the tank.

[0036] Specifically in the present embodiment, the loading arm (not shown in the figure) is an automatically controlled mechanical structure, generally an automatic mechanical arm, which can drive the discharge pipe to move to the tank truck interface 5. The loading arm is a prior art and will not be described in detail here. The discharge pipe (not shown in the figure) is used to transport liquid asphalt to the tank truck interface 5. The discharge pipe is preferably a hose, which is convenient for controlling the movement of the discharge pipe through the loading arm. A tank truck for transporting liquid asphalt is also included. The tank truck interface 5 is provided on the top of the tank truck. The loading arm and the discharge pipe are also provided to cooperate with the tank truck to stop. The liquid asphalt is transported at a position close to the loading arm; the loading arm actually controls the position of the outlet pipe, which is because the discharge pipe is a hose, and the docking mechanism is used to dock the discharge pipe with the tank truck interface 5. The diameter of the inner pipe 1 is smaller than that of the outer pipe 2. The inner pipe 1 is a pipe connected at both ends, and the outer pipe 2 is a pipe structure with a lower end connected and an upper end closed. The upper ends of the inner pipe 1 and the outer pipe 2 are sealed. Preferably, the inner diameter of the external pipe 2 is equal to the inner diameter of the tank truck interface 5, so as to ensure that the exhaust chamber 3 can cover the tank truck interface 5. , so that the original gas in the asphalt tank truck and the yellow asphalt smoke volatilized by the high-temperature liquid asphalt (hereinafter referred to as the mixed gas) only enter the exhaust chamber 3. The main function of the external pipe 2 is to dock with the tank truck interface 5 and ensure the existence of the exhaust chamber 3, so as to facilitate the output of the mixed gas; specifically, when working, after the tank truck stops, the loading arm drives the internal pipe 1 to move so that the entire docking mechanism moves. At the same time, the discharge pipe also moves accordingly, and then the docking mechanism is pressed onto the tank truck interface 5, so that the external pipe 2 is docked with the tank truck interface 5. After the docking is completed, the discharge pipe is discharged to the tank truck through the discharge pipe. Liquid asphalt is input into the tank truck. At this time, the liquid asphalt passes through the tank truck interface 5 and enters the tank truck. At the same time, the mixed gas is squeezed during the asphalt filling to be discharged into the exhaust chamber 3, and finally discharged to other exhaust gas treatment devices or collection devices through the pipeline; in this way, the mixed gas in the asphalt tank truck is centrally treated to avoid environmental pollution and ensure the health of the staff. In addition, it is obvious that the tank truck interface 5 can be used for feeding and exhaust in this embodiment, and there is no need to design two pipelines for feeding and exhausting respectively, which can also increase the utilization rate of the pipeline.

[0037] In another embodiment provided by the present invention, the external tube 2 is connected to an exhaust pipe 4, and the exhaust pipe 4 is used to discharge the gas into the exhaust gas treatment device. The exhaust gas treatment device is preferably an environment that can purify and treat the mixed gas. A purification device can be set in the exhaust gas treatment device. The purification device for the mixed gas is a prior art and will not be described in detail here.

[0038] In another embodiment provided by the present invention, the inner diameter of the external pipe 2 is the same as the inner diameter of the tanker interface 5, so as to ensure that the exhaust chamber 3 can cover the tanker interface 5, so that the mixed gas only enters the exhaust chamber 3.

[0039] In another embodiment provided by the present invention, a stirring unit 31 is installed at the bottom of the inner pipe 1, and an auxiliary air outlet unit 32 is installed at the bottom of the exhaust chamber 3. A synchronous driving unit is connected between the stirring unit 31 and the auxiliary air outlet unit 32. The synchronous driving unit is used to drive the stirring unit 31 and the auxiliary air outlet unit 32 to move synchronously. The asphalt that has just entered the tank truck interface 5 is stirred by the stirring unit 31 to prevent part of the asphalt at the edge of the pipe mouth of the inner pipe 1 from encountering a continuous flow of cold air discharged from the outside and solidifying at the pipe mouth. The auxiliary air outlet unit 32 is located in the exhaust chamber 3, and the auxiliary air outlet unit 32 is mainly used to assist in the addition of the asphalt. The discharge speed of the mixed gas is fast; an annular limiting groove is provided at the bottom of the inner tube 1, and the vertical section of the annular limiting groove is T-shaped. The stirring unit 31 includes a connecting ring 311 rotatably installed in the annular limiting groove at the bottom of the inner tube 1, and the central axis of the connecting ring 311 coincides with the central axis of the inner tube 1. The inner side of the connecting ring 311 is connected to an inner ring part 312 through a first connecting member. The inner ring part 312 is an annular part. A plurality of stirring rods 313 are fixed on the inner side wall of the inner ring part 312 along its circumference. The ends of the stirring rods 313 close to each other are connected to a stabilizing block. The stirring rods 313 are preferably cylindrical structures. The inner ring portion 312 is located at the bottom of the inner tube 1, the central axis of the inner ring portion 312 coincides with the central axis of the inner tube 1, and the outer side of the inner ring portion 312 abuts against the inner wall of the inner tube 1; the auxiliary air outlet unit 32 includes a second connecting piece connected to the outer side of the connecting ring 311, and the second connecting piece is fixedly provided with a first outer ring portion 321 at one end close to the exhaust chamber 3, and a plurality of blades 322 are arranged on the outer side wall of the first outer ring portion 321 along its circumference, and the outer side walls of the plurality of blades 322 are connected by a second outer ring portion 323, and the central axes of the outer side of the first outer ring portion 321 and the second outer ring portion 323 are both aligned with the outer tube 2 The central axis of the first outer ring portion 321 is the same as that of the inner tube 1, the outer wall of the second outer ring portion 323 is the same as that of the outer tube 2, the first connecting member and the second connecting member are both rod-shaped connecting structures, preferably, the first connecting member and the second connecting member have the same shape, the first connecting member is formed by connecting a first vertical section and a first inclined section, the first vertical section is connected to the inner ring portion 312, the first inclined section is connected to the connecting ring 311, the second connecting member is formed by connecting a second vertical section and a second inclined section, the second vertical section is connected to the first outer ring portion 321, and the second inclined section is connected to the connecting ring 311;The synchronous drive unit includes a connecting assembly 331 fixedly connected to the first outer ring portion 321. In this embodiment, the connecting assembly 331 is preferably a connecting rod. The top of the connecting assembly 331 is fixedly connected to an outer gear ring 332, which is sleeved on the inner pipe 1. A driving motor 333 is installed on the top surface of the outer side of the outer pipe 2. A connecting shaft 334 is rotatably penetrated on the outer pipe 2. The top of the connecting shaft 334 is connected to the output shaft of the driving motor 333. The bottom of the connecting shaft 334 extends into the exhaust chamber 3 and is fixedly provided with a driving gear 335. The driving gear 335 is meshed with the outer gear ring 332. The power device is designed in this way to avoid setting the power source (that is, the driving motor 333) inside the inner pipe 1 and to set the power source outside the exhaust chamber 3, which is convenient for the wiring of the power source. Moreover, the stirring unit 31 and the auxiliary air outlet unit 32 can be synchronously driven to work through the synchronous drive unit. ;

[0040] When liquid asphalt is output through the inner pipe 1, the drive motor 333 is started, and the drive motor 333 drives the drive gear 335 to rotate to drive the outer ring gear 332 to rotate. At the same time, the outer ring gear 332 drives the connecting assembly 331 and the first outer ring portion 321 to rotate, and drives the connecting ring 311 to rotate through the first outer ring portion 321. In this way, the connecting ring 311 drives the inner ring portion 312 and the stirring rod 313 to rotate synchronously to stir the asphalt at the pipe mouth before entering the tank. Since the continuous rotation of the connecting ring 311, the inner ring portion 312, and the stirring rod 313 has a shearing effect, the probability of cooling and solidifying the asphalt in the corresponding area is reduced, so that it can still continue to fall into the tank. At this time, the first outer ring portion 321 also drives the multiple fan blades 322 and the second outer ring portion 323 to move. The movement of the fan blades 322 accelerates the discharge of the mixed gas, and the discharge of the mixed gas is also conducive to the liquid asphalt falling into the tank.

[0041] In another embodiment provided by the present invention, the fan blades 322 are rotatably connected between the first outer ring portion 321 and the second outer ring portion 323 via a rotating shaft 324, and a first torsion spring (not shown in the figure) is connected between the rotating shaft 324 and the first outer ring portion 321. The first torsion spring allows the rotating shaft 324 to rotate within a range of 45 to 60 degrees. In this way, when the first outer ring portion 321 rotates, the fan blades 322 can be driven to move for auxiliary exhaust. At this time, the fan blades 322 can also rotate within a small range to minimize dust accumulation.

[0042] In another embodiment provided by the present invention, a rubber sealing ring is installed at the bottom of the external pipe 2, and an annular groove is opened at the top of the tank truck interface 5. The rubber sealing ring and the annular groove are correspondingly arranged. When the external pipe 2 is docked at the tank truck interface 5, the rubber sealing ring is clamped in the annular groove to form a seal to prevent leakage of the mixed gas.

[0043] Furthermore, when the loading arm moves the inner pipe 1 to dock the outer pipe 2 at the tank truck interface 5, manual assistance or other power mechanisms are usually required to achieve a locking connection. The locking connection is slow and generally requires precise docking to lock the outer pipe 2 (this is because the parking position of the truck is uncertain and the traditional loading arm cannot move the inner pipe 1 more accurately). For this reason, this embodiment provides a further solution to the above technical problems; in this embodiment, the inner pipe 1 and the outer pipe 2 are slidably connected together instead of the above-mentioned fixed connection, and an axially extending groove is provided on the inner pipe 1, and a sealing slider 21 is slidably installed on the outer pipe 2. The sealing slider 21 is slidably installed in the groove to limit the sliding connection direction between the inner tube 1 and the outer tube 2, and a limit spring 22 is connected between the sealing slider 21 and the groove; in addition, in the present embodiment, the connecting component 331 between the outer gear ring 332 and the first outer ring portion 321 is preferably a spring rod capable of axial extension and contraction, and a stop plate 23 is fixed on the inner side wall of the outer tube 2, and the upper end of the stop plate 23 is attached to the lower end surface of the outer gear ring 332 to prevent the outer gear ring 332 from moving downward and then cooperate with the extension and contraction of the spring rod to maintain the outer gear ring 332 in a constant position; a trapezoidal limit block 24 is slidably penetrated on the side wall of the tank car interface 5, and the trapezoidal limit block 24 is connected by a spring The component 25 is connected to the outer wall of the tank car interface 5. The upper end of the trapezoidal limit block 24 is provided with an inclined surface, and the inclined surface is inclined from top to bottom into the tank car interface 5. Under the elastic action of the spring connection component 25, the trapezoidal limit block 24 in the initial state extends into the tank car interface 5, and the horizontal section of the upper end surface of the trapezoidal limit block 24 does not extend into the tank car interface 5, and only the inclined surface portion extends to the tank car interface 5. The inclined surface portion of the trapezoidal limit block 24 is correspondingly matched with the second outer ring portion 323. When the second outer ring portion 323 moves downward, it will contact the inclined surface portion of the trapezoidal limit block 24; the lower end of the second outer ring portion 323 is evenly installed with a plurality of inclined docking portions 26 along its circumference. Preferably, The inclined docking portion 26 extends to the bottom of the external pipe 2. The inclined docking portion 26 is a rod-shaped structure with the lower end inclined inwardly, and the number of the inclined docking portions 26 is preferably four. The main function of the inclined docking portion 26 is to fine-tune the position of the external pipe 2 so that the external pipe 2 can be accurately docked with the tanker interface 5. If the external pipe 2 and the tanker interface 5 are not accurately docked, the second outer ring portion 323 moves downward, which will make the inclined docking portion 26 (which may be one, two or three) contact the tanker interface 5 and squeeze the second outer ring portion 323 to move toward the middle, so that the internal pipe 1 and the external pipe 2 can be slightly moved as a whole, so that the external pipe 2 and the tanker interface 5 are accurately aligned;During the downward movement of the inclined docking portion 26, the inclined docking portion 26 may contact and squeeze the trapezoidal stopper 24, or may not contact the trapezoidal stopper 24. This is related to the position of the inclined docking portion 26 in the circumferential direction of the second outer ring portion 323. Obviously, the position of the inclined docking portion 26 in the circumferential direction of the second outer ring portion 323 will not affect the squeezing of the second outer ring portion 323 on the trapezoidal stopper 24.

[0044] When the outer tube 2 and the tanker interface 5 are not accurately connected, the second outer ring portion 323 and the inclined docking portion 26 are also driven downward. If the outer tube 2 and the tanker interface 5 are not accurately connected and slightly offset, the inclined docking portion 26 moves downward and is squeezed by the tanker interface 5 to push the second outer ring portion 323 to move to the middle position. In this way, the accurate docking of the outer tube 2 and the tanker interface 5 is achieved; during the downward locking stroke, the loading arm drives the inner tube 1 to continue to move downward. At this time, the outer tube 2 is blocked and cannot continue to move downward, so that the inner tube 1 and the outer tube 2 slide relative to each other, which makes the sealing slider 21 slide in the groove and squeeze the limit spring 22. The movement of the inner tube 1 also forces the spring rod to stretch. The inner tube 1 continues to move, driving the connecting ring 311 and the second outer ring portion 323 to move downward. The inclined docking portion 26 and the second outer ring portion 323 squeeze the trapezoidal limit block 24 to move outward. At the same time, the spring connecting component 25 is also compressed. When the second outer ring portion 323 moves to below the trapezoidal limit block 24, the movement of the inner pipe 1 is stopped. At this time, under the elastic action of the spring connecting component 25, the trapezoidal limit block 24 is reset and popped out to block the upper end surface of the second outer ring portion 323. In this way, under the elastic action of the limit spring 22, the position of the second outer ring portion 323 and the inner pipe 1 is limited, so that the external pipe 2 and the tank truck interface 5 are quickly docked and locked together. When disassembling, the trapezoidal limit block 24 can be pulled outward manually or by adding other driving methods to complete the disassembly; through the above technical solution, the external pipe 2 and the tank truck interface 5 can be accurately docked, and after the docking is completed, the external pipe 2 and the tank truck interface 5 can be quickly pressed together to form a locking seal to avoid leakage of the mixed gas, while reducing the negative impact on the asphalt loading speed.

[0045] In another embodiment, when liquid asphalt is output, it is difficult to achieve stable and continuous output, and pulsed intermittent delivery or uneven output may occur. This is mainly because liquid asphalt is a high-viscosity liquid with relatively poor fluidity. During the transportation process, due to the viscosity of the liquid asphalt, the flow resistance in the transportation pipeline may increase, causing the asphalt liquid to present a pulsed or uneven state during transportation. Obviously, different asphalt outputs per unit time will bring different asphalt volatilization amounts, especially at the pipe mouth, which will also produce different volumes of mixed gases. In other words, the amount of gas to be discharged is related to the asphalt output. A higher rotation speed will obviously increase the amount of gas discharged from the auxiliary air outlet unit 32, but a higher rotation speed will affect the operation of the drive motor 333 (increasing the workload of the drive motor 333) if it does not match the larger asphalt input. In other words, when the amount of discharged gas is positively correlated with the asphalt output, it can not only ensure the amount of discharged gas, but also avoid adverse effects on the drive motor 333.

[0046] To this end, the present embodiment provides a further solution. It is particularly important to explain that in the present embodiment, there are many parts that are different from the previous embodiments. In the present embodiment, the inner tube 1 and the outer tube 2 are fixedly connected. A fixing rod 11 is formed at the bottom of the connecting ring 311. A two-way telescopic member 12 is rotatably mounted on the fixing rod 11 through a second torsion spring (not shown in the figure). Under the elastic action of the second torsion spring, in the initial state, the two-way telescopic member 12 is in an inclined state, and the two-way telescopic member 12 is tilted upward at one end inside the inner tube 1. The middle part of the two-way telescopic member 12 is rotatably mounted on the fixing rod 11 and both ends can be elastically telescopic. The two-way telescopic member 12 includes a rotating part rotatably mounted on the fixing rod 11, and a sliding groove with two ends passing through the middle part of the rotating part is opened, and the two ends of the sliding groove slide respectively. A first limiting portion and a second limiting portion are installed, and a mounting spring is connected between the first limiting portion and the second limiting portion. A first connecting block 13 is formed at the bottom of the inner ring portion 312 (the stirring rod 313 still exists), and a second connecting block 14 is formed at the bottom of the first outer ring portion 321 (the fan blade 322 still exists). The first limiting portion is rotatably connected to the first connecting block 13, and the second limiting portion is rotatably connected to the second connecting block 14. In this way, when the inner ring portion 312 moves downward, it will drive the first connecting block 13 to move downward and drive the first limiting portion to move. At this time, the rotating portion rotates and drives the second limiting portion to rotate, thereby lifting the second connecting block 14 and the first outer ring portion 321, and the distance the inner ring portion 312 moves downward is positively correlated with the distance the first outer ring portion 321 moves upward.In addition, the driving motor 333 is no longer installed on the top of the external tube 2 but on the side wall of the external tube 2. An elastic telescopic rod 15 is rotatably penetrated on the side wall of the external tube 2. The fixed end of the elastic telescopic rod 15 is connected to the output shaft of the driving motor 333. The movable end of the elastic compression rod is located in the external tube 2, and a friction boss 16 is fixed on the movable end of the elastic telescopic rod 15. The outer surface of the friction boss 16 is a friction surface with a large friction coefficient. The friction boss 16 is a truncated cone structure, and the closer to the inner tube 1, the larger the diameter of the friction boss 16. In addition, the connecting component 331 is in a non-retractable state. An annular driving cover 17 is fixed on the top of the connecting component 331. The annular driving cover 17 is sleeved on the inner tube 1. The annular driving cover 17 is composed of an annular plate and an annular outer edge 18. The annular outer edge 18 is connected to the outer side of the lower end of the annular plate. Preferably, the lower end of the annular outer edge 18 is an inclined surface, and the angle of the inclined surface is the same as the inclination angle of the friction boss 16. The inclined surface on the annular outer edge 18 is also a friction surface with a large friction coefficient. In the initial state, the annular outer edge 18 is attached to the inclined surface of the friction boss 16, and the elastic telescopic rod 15 is in a contracted state. When the friction boss 16 rotates, the friction boss 16 can drive the annular outer edge 18 to rotate synchronously through friction. Moreover, when the annular outer edge 18 moves upward, the elastic telescopic rod 15 will drive the friction boss 16 to move outward and re-attach the friction boss 16 to the bottom of the annular outer edge 18. The difference is that at this time, the diameter of the contact position between the annular outer edge 18 and the friction boss 16 becomes larger, which will also cause the rotation speed of the annular outer edge 18 to become faster. ;

[0047] When the input amount of asphalt per unit time increases, the impact force received by the stirring rod 313 and the inner ring portion 312 increases. At this time, the stirring rod 313 and the inner ring portion 312 move downward for a distance, and the movement of the inner ring portion 312 synchronously drives the first connecting block 13 to move downward, and the movement of the first connecting block 13 drives the two-way telescopic member 12 to rotate and tilt, and the two-way telescopic member 12 drives the second connecting block 14 to move upward, so that the first outer ring portion 321 moves upward. At the same time, the connecting assembly 331 drives the annular drive cover 17 to move upward, so that the annular outer edge 18 moves upward away from the friction boss 16, but under the elastic action of the elastic compression rod, the friction boss 16 moves outward and still fits on the annular outer edge 18, and at this time, the annular outer edge 1 8 The diameter of the contact position with the friction boss 16 becomes larger, and the rotation speed of the first outer ring portion 321 can be correspondingly accelerated, thereby increasing the exhaust volume. In this way, the output of liquid asphalt per unit time increases, and the corresponding amount of discharged gas will also increase; by the same token, the output of liquid asphalt per unit time decreases, and the corresponding amount of discharged gas will also decrease; in this way, when the output of liquid asphalt increases, the amount of discharged gas can be ensured, and when the output of liquid asphalt decreases, it can also avoid adverse effects on the drive motor 333 and avoid overloading the drive motor 333. Moreover, the above technical scheme can realize stepless adjustment and can accurately control the flow rate of the discharged gas. In addition, the above technical scheme also omits structures such as the outer ring gear 332 and the drive gear 335, and the structure is simple.

[0048] Obviously, in this embodiment, the stirring unit 31 and the auxiliary air outlet unit 32 can both perform up and down reciprocating motion, and the auxiliary air outlet unit 32 can enter the tank truck interface 5 from the external pipe 2. Since the outer wall of the second outer ring portion 323 is attached to the inner wall of the external pipe 2, and the inner diameter of the external pipe 2 is the same as the inner diameter of the tank truck interface 5, the second outer ring portion 323 can obviously clean the dust on both the external pipe 2 and the tank truck interface 5. In this way, the dust accumulation at the external pipe 2 and the tank truck interface 5 can be prevented from affecting the exhaust efficiency. Moreover, the second outer ring portion 323 itself can rotate, and dust is not easy to accumulate.

[0049] In another embodiment provided by the present invention, a method for treating exhaust gas from tar processing is provided, and the specific method is: the discharging pipe is driven by the loading arm to move to the top of the tank truck interface 5 and the docking mechanism is docked with the tank truck interface 5, and the sealing is achieved by docking the external pipe 2 with the tank truck interface 5, and liquid asphalt is output through the internal pipe 1. At this time, the mixed gas is discharged from the exhaust chamber 3. In this way, the mixed gas in the asphalt tank truck is centrally treated to avoid polluting the environment and ensure the health of the staff. In addition, the utilization rate of the pipeline can be increased.

[0050] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A tail gas treatment device for tar processing, comprising a discharge pipe, a loading arm for driving the discharge pipe to dock with a tanker interface, characterized in that: The pipe mouth of the discharge pipe is equipped with a docking mechanism, which includes an inner pipe and an outer pipe which are socketed with each other, and an exhaust chamber is formed between the outer wall of the inner pipe and the inner wall of the outer pipe. The inner pipe is used to output liquid asphalt, and the outer pipe is used to dock with and seal the interface of the tank truck, and the exhaust chamber is used to discharge the gas in the tank.

2. The tail gas treatment device for tar processing according to claim 1, characterized in that: The external pipe is connected to a discharge pipe, and the discharge pipe is used to discharge the gas into the external environment.

3. A tar processing tail gas treatment device according to claim 2, characterized in that: The inner diameter of the external pipe is the same as the inner diameter of the tank truck interface.

4. The tail gas treatment device for tar processing according to claim 1, characterized in that: A stirring unit is installed at the bottom of the inner pipe, an auxiliary air outlet unit is installed at the bottom of the exhaust chamber, and a synchronous driving unit is connected between the stirring unit and the auxiliary air outlet unit.

5. The tail gas treatment device for tar processing according to claim 4, characterized in that: The stirring unit comprises a connecting ring rotatably mounted on the bottom of the inner tube, the inner side of the connecting ring is connected to an inner ring portion via a first connecting piece, the inner ring portion is located at the bottom of the inner tube, and a plurality of stirring rods are fixed on the inner side wall of the inner ring portion along its circumference.

6. The tail gas treatment device for tar processing according to claim 5, characterized in that: The auxiliary air outlet unit includes a second connecting piece connected to the outside of the connecting ring, a first outer ring portion is fixedly provided at one end of the second connecting piece close to the exhaust chamber, a plurality of fan blades are arranged on the outer wall of the first outer ring portion along its circumference, and the outer walls of the plurality of fan blades are connected by the second outer ring portion.

7. The tail gas treatment device for tar processing according to claim 6, characterized in that: The synchronous drive unit includes a connecting rod fixedly connected to the first outer ring portion, the top of the connecting rod is fixedly connected to an outer gear ring, the top of the external tube is installed with a driving motor, a connecting shaft is rotatably passed through the external tube, the top of the connecting shaft is connected to the output shaft of the driving motor, the bottom of the connecting shaft extends into the exhaust chamber and is fixed with a driving gear, and the driving gear is meshed with the outer gear ring.

8. The tail gas treatment device for tar processing according to claim 6, characterized in that: The fan blades are rotatably connected between the first outer ring portion and the second outer ring portion via a rotating shaft, and a first torsion spring is connected between the rotating shaft and the first outer ring portion.

9. The tail gas treatment device for tar processing according to claim 6, characterized in that: A rubber sealing ring is installed at the bottom of the external pipe, and an annular groove is opened at the top of the tank truck interface. The rubber sealing ring and the annular groove are arranged in a corresponding manner.

10. A method for treating tail gas from tar processing, characterized in that: The tail gas treatment device for tar processing according to any one of claims 1 to 9 comprises the following steps: The loading arm drives the discharge pipe to move above the tank truck interface and docks the docking mechanism with the tank truck interface, achieves sealing through the docking of the external pipe with the tank truck interface, and outputs liquid asphalt through the internal pipe.

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