Exhaust pipeline tail gas adsorption and purification device

Abstract

The utility model relates to the technical field of tail gas treatment, and discloses an exhaust pipeline tail gas adsorption and purification device which comprises an inner container, a shell is sleeved outside the inner container, a guide structure for guiding a medium is arranged in an interlayer space, a recovery structure is arranged in a cavity of the inner container, and the recovery structure comprises a turbulent flow cover, a collection body, a flange and a discharge pipe. A plurality of turbulent flow covers are fixedly connected in a cavity of the inner container, the collecting body is fixedly connected with the inner container, the blocking edge is fixedly connected with the collecting body, and the discharging pipe is fixedly connected with the blocking edge and extends out of the shell. The solvent rises along with air, adheres to the wall faces of the turbulent flow covers, is guided by the wall faces of the turbulent flow covers, drips downwards, falls on the top face of the collecting body, is collected through the storage cavity defined by the flanges and is discharged out of the shell through the discharging pipe, collection of the solvent in tail gas is achieved, volume loss can be reduced, and recycling is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of tail gas treatment, in particular to an exhaust duct tail gas adsorption purification device. Background Art

[0002] The prior art discloses a special exhaust purification device above a muffle furnace (CN202211556329.7), which belongs to the technical field of exhaust purification equipment. The device includes an arc-shaped exhaust hood, a tapered pipe, a first exhaust duct, an activated carbon purification device, a fan and a second exhaust duct, wherein: an arc-shaped guide plate is arranged inside the inlet end of the arc-shaped exhaust hood; the outlet end of the arc-shaped exhaust hood is fixedly connected to the first exhaust duct through the tapered pipe, the outlet end of the first exhaust duct is fixedly connected to the activated carbon purification device, the outlet end of the activated carbon purification device is connected to the fan and the second exhaust duct in sequence, and the outlet end of the second exhaust duct extends to the outside of the room. The harmful gases and smoke generated by the muffle furnace enter through the arc-shaped exhaust hood, and are transported to the activated carbon purification device through the tapered pipe, the air volume regulating valve and the first exhaust duct for adsorption purification in sequence. The purified exhaust gas is discharged to the outside of the room through the fan and the second exhaust duct in sequence.

[0003] In the prior art, harmful substances in exhaust gas are mainly removed by physical filtration. For the treatment of insoluble substances, combustion is required to decompose the harmful substances in the exhaust gas. The exhaust gas after combustion contains some sprayed solvents. As the combustion continues, the solvent is continuously sprayed, and part of the solvent will rise and be discharged with the flue gas, resulting in increased volume loss. In addition, the gas containing solvents is not conducive to further physical adsorption filtration in the later stage, and it is easy to clog the pipeline and accelerate the failure of the filter material.

[0004] To this end, we propose an exhaust duct tail gas adsorption purification device. Utility Model Content

[0005] The utility model mainly solves the technical problems existing in the above-mentioned prior art and provides an exhaust duct tail gas adsorption purification device.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an exhaust duct tail gas adsorption purification device, comprising an inner tank, an outer shell is provided on the outside of the inner tank, the outer shell is fixedly connected to the inner tank to form an interlayer space, the wall of the outer shell is fixedly connected with two pipes for respectively delivering and discharging heat exchange medium into and out of the interlayer space, a guiding structure for guiding the medium is provided in the interlayer space, a recovery structure is provided in the cavity of the inner tank, the recovery structure comprises a spoiler, a collecting body, a rib and a discharge pipe, the cavity of the inner tank is fixedly connected with a spoiler, the collecting body is fixedly connected to the inner tank, the rib is fixedly connected to the collecting body, the discharge pipe is fixedly connected to the rib and extends to the outside of the outer shell, and the collecting body collects liquid solvent dripping from the wall of each spoiler.

[0007] As a preferred embodiment of the utility model, the inner liner and the outer shell are both circular tube structures, the inner diameter of the outer shell is larger than the outer diameter of the inner liner, the lower end face of the outer shell is fixedly connected to a ring plate, the ring plate is fixedly connected to the outer wall of the inner liner, a sandwich space is formed between the outer wall of the inner liner and the inner wall of the outer shell, and the ring plate seals the bottom of the sandwich space.

[0008] As a preferred embodiment of the utility model, the spoiler is a funnel-shaped structure, the larger port of the spoiler is arranged downward and fixedly connected to the inner wall of the liner, and the smaller openings of the plurality of spoilers increase in sequence from bottom to top.

[0009] As a preferred embodiment of the present invention, the collecting body is located below the spoiler, the collecting body is funnel-shaped, the smaller port of the collecting body is arranged upward, and the smaller port of the collecting body is smaller than the diameter of the smaller port of the adjacent spoiler.

[0010] As a preferred embodiment of the utility model, the rib is annular and fixedly connected to the outer wall of the collecting body, an open storage cavity is formed between the rib and the outer wall of the collecting body, the discharge pipe extends into the storage cavity, a circular hole is provided on the wall of the outer shell, the discharge pipe extends through the circular hole to the outside of the outer shell and is fixedly connected to the outer shell.

[0011] As a preferred embodiment of the utility model, the recovery structure further comprises a drop groove, and the outer wall surface of each spoiler is provided with the same drop groove, and the solvent on the outer wall of the spoiler can drip from the drop groove to the outer wall of another drop groove below.

[0012] As a preferred embodiment of the utility model, the guiding structure is a plurality of partition bodies arranged in the interlayer space, the partition bodies are annular, and are fixedly connected to the inner wall of the outer shell and the outer wall of the liner at the same time. A connecting groove is opened on the wall surface of each partition body, and the connecting grooves on the walls of two adjacent partition bodies are staggered, and the two pipes are respectively located between the topmost and bottommost partition bodies.

[0013] As a preferred embodiment of the utility model, the guiding structure is a partition plate arranged in the interlayer space, the partition plate forms a spiral plate, the partition plate is fixedly connected to the inner wall of the outer shell and the outer wall of the inner tank at the same time, and the top surface of the outer shell is sealed.

[0014] Beneficial Effects

[0015] The utility model provides an exhaust duct tail gas adsorption purification device, which has the following beneficial effects:

[0016] 1. The exhaust duct tail gas adsorption purification device is provided with multiple spoilers and a design in which the top openings of the multiple spoilers are gradually increased. For the solvent contained in the post-combustion gas, the solvent will rise with the air and adhere to the wall surfaces of each spoiler. After being guided by the walls of the multiple spoilers, the solvent will drip downward and fall on the top surface of the collecting body, and will be collected in the storage cavity surrounded by the retaining edge. The solvent is discharged out of the shell by the discharge pipe, thereby realizing the collection of the solvent in the tail gas, reducing the loss of volume, and realizing recycling.

[0017] 2. This exhaust duct tail gas adsorption purification device has a drop groove on the wall of each spoiler. The solvent adhering to the outer wall of the spoiler can drip through the drop groove to the outer wall of the spoiler below, and then the solvent can be discharged from the drop groove of the lowest spoiler to the top surface of the collecting body to be collected, so the collection effect is better and the phenomenon that the spoiler and the outer wall of the shell cannot be discharged can be improved.

[0018] 3. This exhaust duct exhaust gas adsorption purification device, by setting up a pipeline, uses the pipeline to send the heat exchange medium into the interlayer space, and multiple partitions can divide the interlayer space into a number of independent chambers, and the multiple independent chambers are interconnected through connecting grooves. The medium can continuously reverse and return when flowing through each independent chamber, thereby increasing the contact area and contact time between the medium and the inner tank, and improving the heat exchange effect between the medium and the exhaust gas in the inner tank. The heated medium can be used to preheat the exhausted exhaust to ensure the initial temperature of the exhaust gas, thereby facilitating the subsequent combustion treatment.

[0019] 4. The exhaust gas adsorption purification device for exhaust duct is provided with a partition plate, and uses the spiral partition plate to guide the medium entering the interlayer space, so that the medium is guided by the partition plate to form a spiral flow trajectory, and on the basis of ensuring that the medium is fully in contact with the inner tank and has a sufficient contact surface, the resistance of the medium flow can be reduced and the flow rate of the medium can be guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the installation of the inner tank and the outer shell of the utility model;

[0021] Figure 2 This is a schematic diagram of the installation of the partition body and the inner tank of the utility model;

[0022] Figure 3 A schematic diagram of a connecting groove provided in a partition body of the utility model;

[0023] Figure 4 This is a schematic diagram of the installation of the partition plate and the inner tank of the utility model;

[0024] Figure 5 This is a schematic diagram of the installation of the spoiler and the liner of the utility model;

[0025] Figure 6This is a three-dimensional image of the spoiler and collector.

[0026] Legend: 10, inner liner; 11, outer shell; 20, partition body; 21, connecting groove; 30, partition plate; 40, spoiler; 41, collecting body; 42, rib; 43, discharge pipe; 44, drop chute. DETAILED DESCRIPTION

[0027] like Figure 1 , Figure 5 and Figure 6 As shown, a recovery structure is provided in the cavity of the inner liner 10, and the recovery structure includes a spoiler 40, a collecting body 41, a rib 42 and a discharge pipe 43. The cavity of the inner liner 10 is fixedly connected to the spoiler 40, the collecting body 41 is fixedly connected to the inner liner 10, the rib 42 is fixedly connected to the collecting body 41, the discharge pipe 43 is fixedly connected to the rib 42 and extends to the outside of the outer shell 11, the collecting body 41 collects the liquid solvent dripping from the wall of each spoiler 40, and the inner liner 10 and the outer shell 11 are both circular tube structures The inner diameter of the shell 11 is larger than the outer diameter of the liner 10. The lower end surface of the shell 11 is fixedly connected with an annular plate, which is fixedly connected to the outer wall of the liner 10. A sandwich space is formed between the outer wall of the liner 10 and the inner wall of the shell 11. The annular plate closes the bottom of the sandwich space. The spoiler 40 is a funnel-shaped structure. The larger port of the spoiler 40 is arranged downward and fixedly connected to the inner wall of the liner 10. The smaller openings of the plurality of spoilers 40 increase in sequence from bottom to top. The collecting body 41 is located at the spoiler 40. At the bottom, the collecting body 41 is funnel-shaped, and the smaller port of the collecting body 41 is set upward, and the smaller port of the collecting body 41 is smaller than the smaller port diameter of the adjacent spoiler 40. The rib 42 is annular, and the rib 42 is fixedly connected to the outer wall of the collecting body 41. An open storage cavity is formed between the rib 42 and the outer wall of the collecting body 41, and the discharge pipe 43 extends into the storage cavity. A circular hole is opened on the wall of the outer shell 11, and the discharge pipe 43 extends through the circular hole to the outside of the outer shell 11 and is fixedly connected to the outer shell 11. Specifically, the inner tank 10 is an exhaust pipe installed in an exhaust gas combustion treatment equipment, and the exhaust pipe is connected to the air inlet of the exhaust gas treatment equipment. The harmful gas discharged from the exhaust pipe is burned by the exhaust gas combustion treatment equipment. The exhaust gas treatment equipment includes an air inlet and outlet, a spray head and a combustion chamber and a blower. A resistance wire is provided in the combustion chamber. The exhaust gas is heated and burned by the resistance wire in the combustion chamber, and the solvent sprayed from the spray head is used to purify the exhaust gas. The exhaust gas combustion treatment equipment is an existing well-known technology and will not be described here.

[0028] By providing a plurality of spoiler covers 40 and utilizing a design in which the top openings of the plurality of spoiler covers 40 gradually increase, the solvent contained in the post-combustion gas will rise with the air and adhere to the wall surfaces of each spoiler cover 40. Guided by the walls of the plurality of spoiler covers 40, the solvent will drip downward and fall on the top surface of the collecting body 41, and will be collected by the storage cavity surrounded by the retaining edge 42. The solvent will be discharged out of the outer casing 11 by the discharge pipe 43, thereby realizing the collection of the solvent in the exhaust gas, reducing the loss of volume, and realizing recycling.

[0029] like Figure 6 As shown, the recovery structure also includes a drop groove 44. The outer wall surface of each spoiler 40 is provided with the same drop groove 44. The solvent on the outer wall of the spoiler 40 can drip from the drop groove 44 to the outer wall of another drop groove 44 below. By providing a drop groove 44 on the wall surface of each spoiler 40, the solvent adhering to the outer wall surface of the spoiler 40 can drip through the drop groove 44 to the outer wall of the spoiler 40 below, and then the solvent can be discharged from the drop groove 44 of the lowest spoiler 40 to the top surface of the collecting body 41 to be collected, so that the collection effect is better, which can improve the phenomenon that the spoiler 40 and the outer wall of the outer shell 11 are accumulated and cannot be discharged.

[0030] An exhaust duct tail gas adsorption purification device, such as Figure 2 As shown, it includes an inner liner 10, and an outer shell 11 is provided on the outer surface of the inner liner 10. The outer shell 11 is fixedly connected to the inner liner 10 to form a sandwich space. Two pipes are fixedly connected to the wall of the outer shell 11 for respectively feeding and discharging heat exchange medium into and out of the sandwich space. A guide structure for guiding the medium is provided in the sandwich space. The guide structure guides the medium flowing through the sandwich space to promote full contact between the medium and the inner liner 10 to achieve heat exchange, thereby reducing the temperature of the exhaust gas discharged from the inner liner 10;

[0031] In the first embodiment, the guiding structure is a plurality of partition bodies 20 arranged in the interlayer space. The partition bodies 20 are annular and fixedly connected to the inner wall of the outer shell 11 and the outer wall of the liner 10 at the same time. A connecting groove 21 is provided on the wall of each partition body 20. The connecting grooves 21 on the walls of two adjacent partition bodies 20 are staggered. Two pipes are respectively located between the top and bottom two partition bodies 20. In this scheme, a pipe is provided to deliver the heat exchange medium into the interlayer space, and a plurality of partition bodies 20 can divide the interlayer space into a plurality of independent chambers. The plurality of independent chambers are interconnected through the connecting grooves 21. The medium can continuously reverse and return when flowing through each independent chamber, thereby increasing the contact area and contact time between the medium and the liner 10, and improving the heat exchange effect between the medium and the exhaust gas in the liner 10. The heated medium can be used to preheat the exhausted exhaust gas to ensure the initial temperature of the exhaust gas, thereby facilitating the subsequent combustion treatment.

[0032] In the second embodiment, the guiding structure is a partition plate 30 arranged in the interlayer space, and the partition plate 30 forms a spiral plate. The partition plate 30 is fixedly connected to the inner wall of the outer shell 11 and the outer wall of the inner liner 10 at the same time. The top surface of the outer shell 11 is sealed. As an extension of the above scheme, by setting the partition plate 30, the spiral partition plate 30 is used to guide the medium entering the interlayer space, so that the medium is guided by the partition plate 30 to form a spiral flow trajectory. On the basis of ensuring full contact between the medium and the inner liner 10 and sufficient contact surface, the resistance to the flow of the medium can be reduced and the flow rate of the medium can be guaranteed.

[0033] The working principle of this utility model:

[0034] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An exhaust duct tail gas adsorption purification device, comprising an inner liner (10), characterized in that: The outer shell (11) is provided on the outside of the inner liner (10), and the outer shell (11) is fixedly connected to the inner liner (10) to form an interlayer space. Two pipes are fixedly connected to the wall of the outer shell (11) and are respectively used to introduce and discharge heat exchange medium into and out of the interlayer space. A guiding structure for guiding the medium is provided in the interlayer space. A recovery structure is provided in the cavity of the inner liner (10), and the recovery structure includes a spoiler (40), a collecting body (41), a rib (42) and a discharge pipe (43). The cavity of the inner liner (10) is fixedly connected to the spoiler (40), the collecting body (41) is fixedly connected to the inner liner (10), the rib (42) is fixedly connected to the collecting body (41), the discharge pipe (43) is fixedly connected to the rib (42) and extends to the outside of the outer shell (11), and the collecting body (41) collects liquid solvent dripping from the wall of each spoiler (40).

2. The exhaust duct tail gas adsorption purification device according to claim 1 is characterized in that: The inner liner (10) and the outer shell (11) are both circular tube structures. The inner diameter of the outer shell (11) is larger than the outer diameter of the inner liner (10). The lower end surface of the outer shell (11) is fixedly connected to an annular plate, which is fixedly connected to the outer wall of the inner liner (10). An interlayer space is formed between the outer wall of the inner liner (10) and the inner wall of the outer shell (11), and the annular plate seals the bottom of the interlayer space.

3. The exhaust duct tail gas adsorption purification device according to claim 1 is characterized in that: The spoiler (40) is in a funnel-shaped structure, the larger port of the spoiler (40) is arranged downward and fixedly connected to the inner wall surface of the liner (10), and the smaller openings of the plurality of spoilers (40) increase in sequence from bottom to top.

4. The exhaust duct tail gas adsorption purification device according to claim 1 is characterized in that: The collecting body (41) is located below the spoiler (40), and is funnel-shaped. The smaller port of the collecting body (41) is arranged upward, and the smaller port of the collecting body (41) is smaller than the diameter of the smaller port of the adjacent spoiler (40).

5. The exhaust duct tail gas adsorption purification device according to claim 1 is characterized in that: The retaining edge (42) is annular and fixedly connected to the outer wall surface of the collecting body (41). An open storage cavity is formed between the retaining edge (42) and the outer wall surface of the collecting body (41). The discharge pipe (43) extends into the storage cavity. A circular hole is formed on the wall surface of the outer shell (11). The discharge pipe (43) passes through the circular hole and extends to the outside of the outer shell (11) and is fixedly connected to the outer shell (11).

6. The exhaust duct tail gas adsorption purification device according to claim 1 is characterized in that: The recovery structure further comprises a drop groove (44), and the outer wall surface of each spoiler (40) is provided with the same drop groove (44), and the solvent on the outer wall of the spoiler (40) can drip from the drop groove (44) to the outer wall of another drop groove (44) below.

7. The exhaust duct tail gas adsorption purification device according to claim 1 is characterized in that: The guide structure is a plurality of partition bodies (20) arranged in the interlayer space, the partition bodies (20) are annular, and the partition bodies (20) are fixedly connected to the inner wall of the outer shell (11) and the outer wall of the liner (10). A connecting groove (21) is provided on the wall surface of each partition body (20), and the connecting grooves (21) on the wall surfaces of two adjacent partition bodies (20) are staggered, and the two pipes are respectively located between the topmost and bottommost partition bodies (20).

8. The exhaust duct tail gas adsorption purification device according to claim 1 is characterized in that: The guiding structure is a partition plate (30) arranged in the interlayer space, the partition plate (30) forms a spiral plate, the partition plate (30) is fixedly connected to the inner wall of the outer shell (11) and the outer wall of the liner (10), and the top surface of the outer shell (11) is sealed.

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