CN220418166U - Cascade waste heat recovery device - Google Patents
Cascade waste heat recovery device Download PDFInfo
- Publication number
- CN220418166U CN220418166U CN202321946505.8U CN202321946505U CN220418166U CN 220418166 U CN220418166 U CN 220418166U CN 202321946505 U CN202321946505 U CN 202321946505U CN 220418166 U CN220418166 U CN 220418166U
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- Prior art keywords
- collecting plate
- heat
- shell
- heat collecting
- flue gas
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- 239000002918 waste heat Substances 0.000 title claims abstract description 45
- 238000011084 recovery Methods 0.000 title claims abstract description 42
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 43
- 239000003546 flue gas Substances 0.000 claims abstract description 43
- 238000007599 discharging Methods 0.000 claims abstract description 3
- 239000007788 liquid Substances 0.000 claims description 20
- 230000008676 import Effects 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model discloses a cascade waste heat recovery device in the technical field of flue gas waste heat recovery, which comprises a shell, wherein the upper end of the shell is provided with a flue gas inlet, and the lower end of the shell is provided with a flue gas outlet. Waste heat recovery pipelines are arranged above and below the inner cavity of the shell, and each waste heat recovery pipeline comprises a feeding pipe, a first heat collecting plate, a first heat exchanging pipe, a second heat collecting plate, a second heat exchanging pipe and a discharging pipe which are sequentially communicated from bottom to top. The first heat collecting plate and the second heat collecting plate are of hollow structures, the right side of the first heat collecting plate is fixedly connected with the inner wall of the shell, the left side of the second heat collecting plate is fixedly connected with the inner wall of the shell, the first heat collecting plate is arranged in a left-low right-high mode, the second heat collecting plate is arranged in a left-high right-low mode, and a flue gas passage is reserved on one side of the first heat collecting plate and one side of the second heat collecting plate. The first heat exchange tube is arranged vertically on the left, the second heat exchange tube is arranged vertically on the right, and the first heat exchange tube and the second heat exchange tube are both spiral.
Description
Technical Field
The utility model relates to the technical field of flue gas waste heat recovery, in particular to a cascade waste heat recovery device.
Background
The high-temperature flue gas generated after the boiler is combusted carries a large amount of waste heat, and the full utilization of the flue gas waste heat has important significance for reducing carbon, reducing consumption and enhancing efficiency. At present, the flue gas waste heat recovery technology mainly carries out direct contact with flue gas through circulating cooling water, and transfers heat in high-temperature flue gas to a circulating medium. However, due to the limitation of sites and recovery equipment, the arrangement of the flue gas passages of the existing flue gas waste heat recovery device is not reasonable enough, so that the waste heat recovery efficiency is low, and the waste heat recovery is not thorough.
Disclosure of Invention
The utility model mainly aims to provide a step waste heat recovery device which is used for solving the problems mentioned in the background art.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
the utility model provides a step waste heat recovery device, includes the shell, and the shell upper end is equipped with the flue gas import, and the shell lower extreme is equipped with the flue gas export. Waste heat recovery pipelines are arranged above and below the inner cavity of the shell, and each waste heat recovery pipeline comprises a feeding pipe, a first heat collecting plate, a first heat exchanging pipe, a second heat collecting plate, a second heat exchanging pipe and a discharging pipe which are sequentially communicated from bottom to top. The first heat collecting plate and the second heat collecting plate are of hollow structures, the right side of the first heat collecting plate is fixedly connected with the inner wall of the shell, the left side of the second heat collecting plate is fixedly connected with the inner wall of the shell, the first heat collecting plate is arranged in a left-low right-high mode, the second heat collecting plate is arranged in a left-high right-low mode, and a flue gas passage is reserved on one side of the first heat collecting plate and one side of the second heat collecting plate. The first heat exchange tube is arranged vertically on the left, the second heat exchange tube is arranged vertically on the right, and the first heat exchange tube and the second heat exchange tube are both spiral.
Further, the bottom of the inner cavity of the shell is provided with a liquid collecting tank, a filter screen is arranged above the liquid collecting tank, and a liquid discharge pipe is communicated with the right side of the liquid collecting tank. The liquid collecting tank can collect condensed water generated in the waste heat recovery process and discharge the condensed water from the liquid discharge pipe.
The utility model also comprises other components which can enable the step waste heat recovery device to be used normally, and all the devices or components adopt the conventional technical means in the field. In addition, the devices and components not defined in the present utility model are all conventional in the art. In the implementation process, a proper equipment or component model can be selected according to a specific working scene.
The working principle of the utility model is as follows: firstly, circulating medium is introduced from a feed pipe, and after high-temperature flue gas enters from a flue gas inlet, the flue gas descends along a plurality of roundabout modes due to the blocking of the first heat collecting plate and the second heat collecting plate. The flue gas firstly contacts with the waste heat recovery pipeline above, the contact area of the spiral first heat exchange pipe and the spiral second heat exchange pipe is increased, the waste heat recovery efficiency is improved, and the flue gas temperature is gradually reduced; the flue gas continues to descend, waste heat recovery is continued until the flue gas reaches the bottom of the device, and the flue gas is discharged from a flue gas outlet. In the waste heat recovery process, the generated condensed water can drop down layer by layer along the inclined first heat collecting plate and the inclined second heat collecting plate, and the condensed water enters the liquid collecting tank after being filtered by the filter screen, and finally is discharged from the liquid discharge pipe.
Compared with the prior art, the utility model has the following beneficial effects: 1. waste heat recovery efficiency is high: the high-temperature flue gas descends along a plurality of roundabout modes, and simultaneously the contact area of the first heat exchange tube and the second heat exchange tube is increased, so that the waste heat recovery efficiency is improved. 2. Waste heat recovery is more thorough, is convenient for carry out step waste heat recovery: the flue gas waste heat recovery device has the advantages that the waste heat recovery pipelines are arranged, the flue gas waste heat at different temperatures can be recovered step by step, and the waste heat recovery is thorough. 3. The condensed water is convenient to collect and process: the generated condensed water can drop down layer by layer along the inclined first heat collecting plate and the inclined second heat collecting plate, so that the collection and the treatment are convenient.
Drawings
Fig. 1 is a schematic diagram of the overall structure of a step waste heat recovery device according to the present utility model.
Fig. 2 is a schematic view of a partial structure of the present utility model.
In the figure: 1. a housing; 2. a flue gas inlet; 3. a flue gas outlet; 4. a feed pipe; 5. a first heat collecting plate; 6. a first heat exchange tube; 7. a second heat collecting plate; 8. a second heat exchange tube; 9. a discharge pipe; 10. a flue gas passage; 11. a liquid collecting tank; 12. a filter screen; 13. and a liquid discharge pipe.
Detailed Description
The utility model is described in further detail below with reference to the drawings and the detailed description.
Examples:
as shown in fig. 1-2, the step waste heat recovery device comprises a shell 1, wherein a smoke inlet 2 is arranged at the upper end of the shell 1, and a smoke outlet 3 is arranged at the lower end of the shell 1. Waste heat recovery pipelines are arranged above and below the inner cavity of the shell 1, and each waste heat recovery pipeline comprises a feed pipe 4, a first heat collecting plate 5, a first heat exchanging pipe 6, a second heat collecting plate 7, a second heat exchanging pipe 8 and a discharge pipe 9 which are sequentially communicated from bottom to top. The first heat collecting plate 5 and the second heat collecting plate 7 are of hollow structures, the right side of the first heat collecting plate 5 is fixedly connected with the inner wall of the shell 1, the left side of the second heat collecting plate 7 is fixedly connected with the inner wall of the shell 1, the first heat collecting plate 5 is arranged in a left-low right-high mode, the second heat collecting plate 7 is arranged in a left-high right-low mode, and a flue gas passage 10 is reserved on one side of each of the first heat collecting plate 5 and the second heat collecting plate 7. The first heat exchange tube 6 is arranged vertically on the left, the second heat exchange tube 8 is arranged vertically on the right, and the first heat exchange tube 6 and the second heat exchange tube 8 are both spiral.
In addition, the bottom of the inner cavity of the shell 1 is provided with a liquid collecting tank 11, a filter screen 12 is arranged above the liquid collecting tank 11, and a liquid discharge pipe 13 is communicated with the right side of the liquid collecting tank 11.
The working principle of the cascade waste heat recovery device of the utility model is as follows: firstly, circulating medium is introduced from the feed pipe 4, and after high-temperature flue gas enters from the flue gas inlet 2, the flue gas descends along a plurality of roundabout modes due to the blocking of the first heat collecting plate 5 and the second heat collecting plate 7. The flue gas firstly contacts with the waste heat recovery pipeline above, the contact area of the spiral first heat exchange tube 6 and the spiral second heat exchange tube 8 is increased, the waste heat recovery efficiency is improved, and the flue gas temperature is gradually reduced; the flue gas continues to descend, waste heat recovery is continued until the flue gas reaches the bottom of the device, and the flue gas is discharged from the flue gas outlet 3. In the process of recovering the waste heat, the generated condensed water can drop layer by layer along the inclined first heat collecting plate 5 and the inclined second heat collecting plate 7, and enters the liquid collecting tank 11 after being filtered by the filter screen 12, and finally is discharged from the liquid discharge pipe 13.
The foregoing examples are merely illustrative of the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications and improvements made by those skilled in the art to the technical solution of the present utility model should fall within the protection scope of the present utility model without departing from the design spirit of the present utility model.
Claims (2)
1. The utility model provides a step waste heat recovery device, includes shell (1), shell (1) upper end is equipped with flue gas import (2), and shell (1) lower extreme is equipped with flue gas export (3), its characterized in that: waste heat recovery pipelines are arranged above and below the inner cavity of the shell (1), and each waste heat recovery pipeline comprises a feeding pipe (4), a first heat collecting plate (5), a first heat exchange tube (6), a second heat collecting plate (7), a second heat exchange tube (8) and a discharging pipe (9) which are sequentially communicated from bottom to top; the first heat collecting plate (5) and the second heat collecting plate (7) are of hollow structures, the right side of the first heat collecting plate (5) is fixedly connected with the inner wall of the shell (1), the left side of the second heat collecting plate (7) is fixedly connected with the inner wall of the shell (1), the first heat collecting plate (5) is arranged in a left-low and right-high mode, the second heat collecting plate (7) is arranged in a left-high and right-low mode, and a flue gas passage (10) is reserved on one side of the first heat collecting plate (5) and one side of the second heat collecting plate (7); the first heat exchange tube (6) is arranged vertically at the left, the second heat exchange tube (8) is arranged vertically at the right, and the first heat exchange tube (6) and the second heat exchange tube (8) are both spiral.
2. The step waste heat recovery device according to claim 1, wherein: the inner cavity bottom of the shell (1) is provided with a liquid collecting tank (11), a filter screen (12) is arranged above the liquid collecting tank (11), and a liquid discharge pipe (13) is communicated with the right side of the liquid collecting tank (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321946505.8U CN220418166U (en) | 2023-07-19 | 2023-07-19 | Cascade waste heat recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321946505.8U CN220418166U (en) | 2023-07-19 | 2023-07-19 | Cascade waste heat recovery device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220418166U true CN220418166U (en) | 2024-01-30 |
Family
ID=89656734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321946505.8U Active CN220418166U (en) | 2023-07-19 | 2023-07-19 | Cascade waste heat recovery device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220418166U (en) |
-
2023
- 2023-07-19 CN CN202321946505.8U patent/CN220418166U/en active Active
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