High-temperature organic waste gas heat recovery device

Abstract

The invention relates to the technical field of environmental protection, in particular to a high-temperature organic waste gas heat recovery device which is provided with a bottom plate, first partitions, a driving shaft, a sealing mechanism, a filtering mechanism and an ejection mechanism. The two independent smoke inlet channels are naturally formed in the two sides of the cavity, when the filtering mechanism on any side needs to be cleaned, the sealing mechanism on the side needing to be cleaned can be driven to rotate through rotation of the driving shaft, the smoke inlet channels are closed, meanwhile, the ejection mechanisms on the same side can eject out the filtering mechanisms, only one-time operation is needed, and the cleaning efficiency is greatly improved. The operation of closing the single smoke inlet channel and ejecting out the filtering mechanism can be completed, the filtering mechanism is convenient to replace, meanwhile, the smoke inlet flue on the other side can be kept in a smooth and sealed state, and the follow-up waste heat recovery efficiency is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of environmental protection, and more specifically to a high-temperature organic waste gas heat recovery device. Background Art

[0002] In the chemical production process, tail gas often contains waste heat. If such tail gas is discharged directly, it will not only affect the air temperature of the surrounding environment, but also the waste heat cannot be effectively utilized. In this case, the existing technology generally uses a heat exchanger or a waste heat boiler to collect the waste heat of the tail gas, that is, the tail gas is fully exchanged with the heat transfer medium (normal temperature water, etc.) through the contact between the walls, and then the heated medium is utilized. This treatment mode is relatively common in chemical tail gas treatment.

[0003] However, the above method is only applicable to harmless exhaust gas. For exhaust gas that needs further treatment (such as organic waste gas), if the above heat exchange process is adopted first and then degradation treatment is carried out, pollution may be caused during the heat exchange process due to problems such as sealing. If degradation treatment is carried out first, the residual heat will be dissipated and can no longer be collected.

[0004] To this end, a technical solution that can solve the above-mentioned problems has appeared on the market, such as the organic gas heat recovery and utilization device provided by Patent No. ZLCN201921110620.5. The technical solution of this device sets up a pre-combustion process before the physical heat exchange process, thereby improving the heat collection efficiency as a whole. The general process of its technical solution is to pre-filter the exhaust gas, flow the filtered exhaust gas into the mixing chamber for mixed combustion, fully burn the organic components, thereby removing the organic components in the exhaust gas, and finally input the high-temperature flue gas into the shell-and-tube heat exchanger for heat exchange.

[0005] This technical solution adopts a vertical filter to filter the exhaust gas in the pre-filtration process. The specification states in paragraph

[0034] that "the screen is arranged vertically, and the intercepted solid particles fall naturally or periodically under artificial vibration to the bottom of the bin body". This arrangement has disadvantages. First, the temperature of the organic waste gas is between 400°C and 800°C, and the high-temperature gas flows upward due to buoyancy and changes in gas density. As a result, the high-temperature organic waste gas cannot fully contact the vertical filter. Only the lower part of the vertical filter can contact the organic waste gas, resulting in poor filtering effect. Second, the particles in the organic waste gas mainly include soot, soluble organic matter and sulfate. In the process of following the flow of organic waste gas, they are filtered by the filter and may also be attached to the filter. At this time, it needs to be cleaned. The high temperature of the organic waste gas will heat the filter, resulting in the filter itself also having a high temperature. Manual cleaning will inevitably require shutdown for operation, resulting in the inability to operate the filtration process and the subsequent waste heat recovery efficiency of the exhaust gas being reduced. Summary of the invention

[0006] The object of the present invention is to provide a high-temperature organic waste gas heat recovery device to solve the problems raised in the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solution: a high-temperature organic waste gas heat recovery device, a bottom plate, a vertical cylinder coaxially mounted on the bottom plate, and a smoke inlet opened at the axis of the bottom plate; Two first partitions are symmetrically arranged on the bottom plate on both sides of the smoke inlet, the tops of the two first partitions are connected by a fixed plate, a cavity is formed between the fixed plate and the smoke inlet, and two smoke inlet channels are formed on the sides of the cavity away from the two first partitions, the fixed plate is axially connected to a drive shaft, the lower end of the drive shaft extends into the cavity, and one end of the drive shaft located in the cavity is also connected to a closing mechanism; The driving shaft is located above the first partition and is also connected to an ejection mechanism. The top end face of the vertical cylinder is coaxially connected to the bottom end face of the extension seat. The top end face of the extension seat is flush with the height of the first partition. The top end face of the extension seat is located on both sides of the first partition and a filtering mechanism is arranged. The ejection mechanism can rotate with the driving shaft and fit the side of the filtering mechanism. An upper cover is coaxially sleeved on the outer side of the extension seat, and ejection grooves are provided on both sides of the upper cover corresponding to the positions of the filter mechanism. A smoke exhaust port is also provided outside the upper cover above the ejection groove, and the upper end of the drive shaft extends to the outside of the upper cover.

[0008] A further technical solution of the present application is as follows: the sealing mechanism comprises a rotating disk, the bottom end of the driving shaft is connected to the axis center of the top end of the rotating disk, two sealing plates are symmetrically arranged on both sides of the lower end of the rotating disk, and the shape of the sealing plates corresponds to the shape of the smoke inlet channel.

[0009] A further technical solution of the present application is: the ejection mechanism includes an upper connecting ring, a lower connecting ring, a lever and a vertical plate, the upper connecting ring and the lower connecting ring are sequentially sleeved on the outside of the drive shaft from top to bottom, the outside of the upper connecting ring and the lower connecting ring are each connected to one end of the vertical plate, and the two vertical plates are parallel to each other, one end of the lever is connected to the outside of the drive shaft, and the other end of the lever extends between the two vertical plates.

[0010] A further technical solution of the present application is that the connection ends of the two vertical plates and the upper connecting ring and the lower connecting ring are respectively provided with a fitting portion, and the two fitting portions can be respectively fitted to the outer sides of the upper connecting ring and the lower connecting ring.

[0011] A further technical solution of the present application is as follows: the filtering mechanism includes two rotating columns, a filter frame and a filter screen, the two rotating columns are installed on the upper end surface of the extension seat, the number of the filter frames is two, and one end of the two filter frames is respectively connected to the outer side of the respective adjacent rotating columns, the filter screen is installed in the filter frame, and the other ends of the two vertical plates can be connected to the respective adjacent filter frame sides.

[0012] A further technical solution of the present application is: a second partition is also provided on the outside of the driving shaft, and one end of a shielding portion is also provided on the side of the second partition below and away from the vertical plate, and the other end of the shielding portion is attached to the top of the first partition, and the side of the second partition below and close to the vertical plate is attached to the upper end of the vertical plate.

[0013] A further technical solution of the present application is as follows: the driving shaft is located on the outer part of the upper cover and is also sleeved with a driving gear.

[0014] A further technical solution of the present application is that a positioning hole is further provided on the outer side of the bottom end of the extension seat, a positioning block is connected to the lower end of the upper cover corresponding to the positioning port, and the positioning block is inserted into the positioning hole.

[0015] A further technical solution of the present application is that the height of the smoke exhaust port is higher than the height of the second partition.

[0016] A further technical solution of the present application is that a baffle is arranged inside a single ejection groove, and one end of the baffle close to the rotating column is rotatably connected to the ejection groove.

[0017] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects: The present invention is provided with a bottom plate, a first partition, a driving shaft, a closing mechanism, a filtering mechanism and an ejecting mechanism. First, the two first partitions are installed in conjunction with the bottom plate to form a cavity with the smoke inlet and the fixed plate. Two independent smoke inlet channels are naturally formed on both sides of the cavity, and the organic waste gas is respectively introduced into the two sides of the first partition, and flows upward, is filtered through the two filtering mechanisms, and is finally discharged outside the device. When the filtering mechanism on either side needs to be cleaned, the closing mechanism on the side to be cleaned can be driven to rotate by rotating the driving shaft to close the smoke inlet channel. At the same time, the ejecting mechanism on the same side will eject the filtering mechanism. Only one operation is required to complete the operation of closing a single smoke inlet channel and ejecting the filtering mechanism, which is convenient for replacing the filtering mechanism. At the same time, the smoke inlet duct on the other side can be kept unobstructed and sealed, thereby ensuring the efficiency of subsequent waste heat recovery. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the three-dimensional structure of the high-temperature organic waste gas heat recovery device provided by the present invention; Figure 2 It is a structural schematic diagram of the filtering mechanism in the present invention; Figure 3 It is a structural schematic diagram of the smoke inlet in the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the first partition in the present invention; Figure 5 It is a schematic diagram of the internal structure of the upper cover in the present invention; Figure 6 For the present invention Figure 3 A schematic diagram of the enlarged structure at A in the middle; Figure 7 For the present invention Figure 4 Schematic diagram of the enlarged structure at point B in the middle.

[0019] Explanation of the symbols in the schematic diagram: 1. Bottom plate; 2. Vertical cylinder; 3. Extension seat; 4. Filter screen; 5. Filter frame; 6. Positioning hole; 7. Vertical plate; 8. Positioning block; 9. Baffle plate; 10. Ejection groove; 11. Smoke exhaust port; 12. Upper cover; 13. Driving gear; 14. Driving shaft; 15. Second partition; 16. Shielding part; 17. First partition; 18. Rotating column; 19. Sealing plate; 20. Smoke inlet; 21. Fixed disk; 22. Rotating disk; 23. Upper connecting ring; 24. Lower connecting ring; 25. Push rod; 26. Fitting part. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. The present invention is further described below in combination with the embodiments.

[0021] See also Figures 1 to 7 In one embodiment of the present application, a high-temperature organic waste gas heat recovery device comprises a bottom plate 1, a vertical tube 2 coaxially mounted on the bottom plate 1, and a smoke inlet 20 opened at the axis of the bottom plate 1; Two first partitions 17 are symmetrically arranged on both sides of the smoke inlet 20 on the bottom plate 1. The tops of the two first partitions 17 are connected by a fixing plate 21. A cavity is formed between the fixing plate 21 and the smoke inlet 20, and two smoke inlet channels are formed on the sides of the cavity away from the two first partitions 17. The fixing plate 21 is axially connected to a drive shaft 14. The lower end of the drive shaft 14 extends into the cavity. One end of the drive shaft 14 located in the cavity is also connected to a closing mechanism. The driving shaft 14 is located above the first partition 17 and is also connected to an ejection mechanism. The top end face of the vertical cylinder 2 is coaxially connected to the bottom end face of the extension seat 3. The top end face of the extension seat 3 is flush with the first partition 17. The top end face of the extension seat 3 is located on both sides of the first partition 17 and is provided with a filtering mechanism, and the ejection mechanism can rotate with the driving shaft 14 and fit the side of the filtering mechanism. An upper cover 12 is coaxially sleeved on the outer side of the extension seat 3, and ejection grooves 10 are opened on both sides of the upper cover 12 corresponding to the positions of the filter mechanism. A smoke exhaust port 11 is also opened outside the upper cover 12 above the ejection groove 10, and the upper end of the drive shaft 14 extends to the outside of the upper cover 12.

[0022] This embodiment is implemented as follows: when in use, high-temperature organic waste gas enters the device from the smoke inlet 20, and the two first partitions 17 are installed in conjunction with the bottom plate 1 to form a cavity with the smoke inlet 20 and the fixed plate 21. Two independent smoke inlet channels are naturally formed on both sides of the cavity, and the organic waste gas is respectively introduced into the two sides of the first partition 17, and flows upward, is filtered through two filtering mechanisms, and is finally discharged from the outside of the device. When the filtering mechanism on either side needs to be cleaned, the driving shaft 14 can be rotated to drive the closing mechanism on the side to be cleaned to rotate, and the smoke inlet channel is closed. At the same time, the ejection mechanism on the same side will eject the filtering mechanism, and the filtering mechanism on one side can be replaced.

[0023] See also Figure 3 and Figure 4 The sealing mechanism includes a rotating disk 22, the bottom end of the driving shaft 14 is connected to the top axis of the rotating disk 22, and two sealing plates 19 are symmetrically arranged on both sides of the lower end of the rotating disk 22, and the shape of the sealing plates 19 corresponds to the shape of the smoke inlet channel.

[0024] This embodiment is implemented as follows: During actual use, when the drive shaft 14 rotates, it will drive the two sealing plates 19 to rotate. The two sealing plates 19 are arranged corresponding to the two smoke inlet channels. During use, the two sealing plates 19 are far away from the two smoke inlet channels. When rotating, a single sealing plate 19 fits against a single smoke inlet channel to close the single smoke inlet channel, thereby realizing the closure of a single-sided smoke duct. At the same time, the smoke inlet channel and the sealing plate 19 can both be set to the shape of an inverted cone, thereby enlarging the cross-sectional opening of the smoke inlet channel, facilitating the circulation of high-temperature smoke, and achieving higher efficiency.

[0025] See also Figure 2 , Figure 3 , Figure 4 , Figure 6 and Figure 7 As a preferred embodiment of the present application, the ejection mechanism includes an upper connecting ring 23, a lower connecting ring 24, a lever 25 and a vertical plate 7. The upper connecting ring 23 and the lower connecting ring 24 are sequentially sleeved on the outside of the driving shaft 14 from top to bottom. One end of the vertical plate 7 is connected to the outside of the upper connecting ring 23 and the lower connecting ring 24, and the two vertical plates 7 are parallel to each other. One end of the lever 25 is connected to the outside of the driving shaft 14, and the other end of the lever 25 extends between the two vertical plates 7.

[0026] Furthermore, the connection ends of the two vertical plates 7 and the upper connecting ring 23 and the lower connecting ring 24 are respectively provided with a fitting portion 26, and the two fitting portions 26 can be fitted to the outer sides of the upper connecting ring 23 and the lower connecting ring 24 respectively.

[0027] This embodiment is implemented as follows: during the rotation of the drive shaft 14, the upper connecting ring 23 and the lower connecting ring 24 will not rotate, and only the lever 25 will follow the rotation. The rotation direction of the lever 25 is determined by the rotation direction of the drive shaft 14, and the lever 25 will abut against the vertical plate 7 when it rotates. When the vertical plate 7 is displaced, the connecting ring connected to it will rotate, while the unconnected rotating ring will not rotate. In this way, while ensuring that the smoke inlet channel on one side is closed, the connecting ring and the vertical plate 7 on the same side will be pushed by the lever 25, and when the vertical plate 7 moves, the end will contact the filter mechanism on the same side, pushing the filter mechanism out of the ejection groove 10, and then the filter mechanism can be replaced. The connecting ends of the two vertical plates 7 and the upper connecting ring 23 and the lower connecting ring 24 are also respectively provided with a fitting portion 26, which can ensure the sealing during the rotation of the vertical plate 7 and reduce smoke leakage.

[0028] See also Figure 1 and Figure 2 In this embodiment, the filtering mechanism includes two rotating columns 18, a filter frame 5 and a filter screen 4. The two rotating columns 18 are installed on the upper end surface of the extension seat 3. The number of the filter frames 5 is two, and one end of the two filter frames 5 is respectively connected to the outer side of the respective adjacent rotating columns 18. The filter screen 4 is installed in the filter frame 5, and the other ends of the two vertical plates 7 can be connected to the side of the respective adjacent filter frames 5.

[0029] In actual application, when the filter mechanism is ejected, the filter frame 5 rotates along the outer side of the rotating column 18 to which it is connected, so as to eject the filter frame 5 on one side. At this time, the filter screen 4 can be taken out for replacement after the filter screen 4 and the filter frame 5 are cooled.

[0030] See also Figures 1 to 7 In this embodiment, a second partition 15 is further provided on the outside of the driving shaft 14 , and one end of a shielding portion 16 is further provided on the side below the second partition 15 away from the vertical plate 7 , and the other end of the shielding portion 16 is attached to the top of the first partition 17 .

[0031] Furthermore, one side of the second partition 15 below and close to the vertical plate 7 is attached to the upper end of the vertical plate 7 , and the driving shaft 14 located outside the upper cover 12 is also sleeved with a driving gear 13 .

[0032] Furthermore, a positioning hole 6 is provided on the outer side of the bottom end of the extension seat 3 , and a positioning block 8 is connected to the lower end of the upper cover 12 corresponding to the positioning port, and the positioning block 8 is inserted into the positioning hole 6 .

[0033] Furthermore, the height of the smoke exhaust port 11 is higher than the height of the second partition 15 .

[0034] Furthermore, a baffle plate 9 is disposed inside a single ejection groove 10 , and one end of the baffle plate 9 close to the rotating column 18 is rotatably connected to the ejection groove 10 .

[0035] In actual application, the driving gear 13 is used to facilitate the connection between the driving shaft 14 and the external driving component, to facilitate rotation and to facilitate the operation of the device. A positioning hole 6 is also arranged on the outer side of the bottom end of the extension seat 3, and a positioning block 8 is connected to the corresponding positioning port position of the lower end of the upper cover 12, so that the upper cover 12 will not be offset when connected to the extension seat 3, and the installation is convenient. The height of the smoke exhaust port 11 is higher than the height of the second partition 15, so as to ensure that the high-temperature organic waste gas will flow out of the smoke exhaust port 11 only after passing the height of the second partition 15, so as to ensure the stable operation of the pre-filtration, and the baffle 9 is used to seal the ejection groove 10, and at the same time ensure that it will not affect the ejection operation when the filter mechanism is ejected.

[0036] The present invention is provided with a base plate 1, a first partition 17, a drive shaft 14, a closing mechanism, a filtering mechanism and an ejection mechanism. First, the two first partitions 17 are installed in conjunction with the base plate 1 to form a cavity with the smoke inlet 20 and the fixed plate 21. Two independent smoke inlet channels are naturally formed on both sides of the cavity, and the organic waste gas is respectively introduced into the two sides of the first partition 17, and flows upward, is filtered through the two filtering mechanisms, and is finally discharged outside the device. When the filtering mechanism on either side needs to be cleaned, the closing mechanism on the side to be cleaned can be driven to rotate by rotating the drive shaft 14 to close the smoke inlet channel. At the same time, the ejection mechanism on the same side will eject the filtering mechanism. Only one operation is required to complete the operation of closing a single smoke inlet channel and ejecting the filtering mechanism, which is convenient for replacing the filtering mechanism. At the same time, the smoke inlet duct on the other side can be kept unobstructed and sealed, thereby ensuring the efficiency of subsequent waste heat recovery.

[0037] The present invention and its embodiments are described schematically above, and the description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by it and designs a structural method and an embodiment similar to the technical solution without creativity without departing from the purpose of the invention, they shall all fall within the protection scope of the present invention.

[0038] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A high-temperature organic waste gas heat recovery device, characterized in that: include: A bottom plate (1), a vertical tube (2) coaxially mounted on the bottom plate (1), and a smoke inlet (20) opened at the axis of the bottom plate (1); Two first partitions (17) are symmetrically arranged on the bottom plate (1) at both sides of the smoke inlet (20); the top ends of the two first partitions (17) are connected via a fixing plate (21); a cavity is formed between the fixing plate (21) and the smoke inlet (20); and two smoke inlet channels are formed on the side of the cavity away from the two first partitions (17); the fixing plate (21) is axially connected to a drive shaft (14); the lower end of the drive shaft (14) extends into the cavity; and one end of the drive shaft (14) located in the cavity is also connected to a closing mechanism; The driving shaft (14) is located above the first partition (17) and is also connected to an ejection mechanism. The top end face of the vertical cylinder (2) is coaxially connected to the bottom end face of the extension seat (3). The top end face of the extension seat (3) is flush with the height of the first partition (17). The top end face of the extension seat (3) is located on both sides of the first partition (17). The ejection mechanism can rotate with the driving shaft (14) and fit the side of the filtering mechanism. An upper cover (12) is coaxially sleeved on the outer side of the extension seat (3), ejection grooves (10) are provided on both sides of the upper cover (12) at positions corresponding to the filter mechanism, a smoke exhaust port (11) is provided outside the upper cover (12) above the ejection grooves (10), and the upper end of the drive shaft (14) extends to the outside of the upper cover (12).

2. A high-temperature organic waste gas heat recovery device according to claim 1, characterized in that: The sealing mechanism comprises a rotating disk (22), the bottom end of the driving shaft (14) is connected to the axis of the top end of the rotating disk (22), two sealing plates (19) are symmetrically arranged on both sides of the lower end of the rotating disk (22), and the shape of the sealing plates (19) corresponds to the shape of the smoke inlet channel.

3. The high-temperature organic waste gas heat recovery device according to claim 1 is characterized in that: The ejection mechanism comprises an upper connecting ring (23), a lower connecting ring (24), a lever (25) and a vertical plate (7); the upper connecting ring (23) and the lower connecting ring (24) are sleeved on the outside of the driving shaft (14) in sequence from top to bottom; the outside of the upper connecting ring (23) and the outside of the lower connecting ring (24) are respectively connected to one end of the vertical plate (7), and the two vertical plates (7) are parallel to each other; one end of the lever (25) is connected to the outside of the driving shaft (14), and the other end of the lever (25) extends between the two vertical plates (7).

4. A high-temperature organic waste gas heat recovery device according to claim 3, characterized in that: The connection ends of the two upright plates (7) and the upper connecting ring (23) and the lower connecting ring (24) are also respectively provided with a fitting portion (26), and the two fitting portions (26) can be fitted to the outer sides of the upper connecting ring (23) and the lower connecting ring (24), respectively.

5. A high-temperature organic waste gas heat recovery device according to claim 4, characterized in that: The filtering mechanism comprises two rotating columns (18), a filter frame (5) and a filter screen (4); the two rotating columns (18) are mounted on the upper end surface of the extension seat (3); the number of the filter frames (5) is two, and one end of the two filter frames (5) is respectively connected to the outer side of the respective adjacent rotating columns (18); the filter screen (4) is mounted in the filter frame (5); and the other ends of the two vertical plates (7) can be connected to the side of the respective adjacent filter frame (5).

6. A high-temperature organic waste gas heat recovery device according to claim 5, characterized in that: A second partition (15) is also provided on the outside of the driving shaft (14); one end of a shielding portion (16) is also provided on a side of the second partition (15) away from the vertical plate (7); the other end of the shielding portion (16) is attached to the top of the first partition (17); and a side of the second partition (15) close to the vertical plate (7) is attached to the upper end of the vertical plate (7).

7. A high-temperature organic waste gas heat recovery device according to claim 6, characterized in that: The driving shaft (14) is located on the outer portion of the upper cover (12) and is also sleeved with a driving gear (13).

8. The high-temperature organic waste gas heat recovery device according to claim 4 is characterized in that: A positioning hole (6) is also provided on the outer side of the bottom end of the extension seat (3); a positioning block (8) is connected to the lower end of the upper cover (12) at a position corresponding to the positioning opening, and the positioning block (8) is inserted into the positioning hole (6).

9. A high-temperature organic waste gas heat recovery device according to claim 8, characterized in that: The height of the smoke exhaust port (11) is higher than the height of the second partition (15).

10. A high-temperature organic waste gas heat recovery device according to claim 9, characterized in that: A baffle plate (9) is disposed inside a single ejection groove (10), and one end of the baffle plate (9) close to the rotating column (18) is rotatably connected to the ejection groove (10).

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