CN215675140U - Boiler continuous drainage waste heat recovery device - Google Patents
Boiler continuous drainage waste heat recovery device Download PDFInfo
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- CN215675140U CN215675140U CN202120573726.XU CN202120573726U CN215675140U CN 215675140 U CN215675140 U CN 215675140U CN 202120573726 U CN202120573726 U CN 202120573726U CN 215675140 U CN215675140 U CN 215675140U
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Abstract
The utility model relates to a boiler continuous drainage waste heat recovery device, which comprises: the periodic blowdown flash tank is used for receiving continuous drainage of the boiler; a first pipeline is arranged between the periodic blowdown flash tank and the heat exchanger; raw water heating system, raw water heating system are provided with raw water input tube and raw water output tube, the leading water pipeline between the cold water entry of raw water input tube and heat exchanger, the one end and the raw water input union coupling of leading water pipeline, the other end and the cold water entry linkage of heat exchanger of leading water pipeline, be provided with drainage pipe between the cold water export of raw water output tube and heat exchanger, drainage pipe's one end and raw water output tube coupling, drainage pipe's the other end and the cold water exit linkage of heat exchanger. The heat exchanger can exchange heat with continuous drainage of the periodic blowdown flash tank through the first pipeline, cold raw water led out from the raw water input pipe can be heated, heated hot raw water is conveyed back to the raw water output pipe, and waste heat in the continuous drainage can be recovered.
Description
Technical Field
The utility model relates to the technical field of filtration waste heat recovery, in particular to a boiler continuous drainage waste heat recovery device.
Background
The boiler is an energy conversion device, the energy input by the box boiler comprises chemical energy and electric energy in fuel, and the boiler outputs steam, high-temperature water or an organic heat carrier with certain heat energy.
At present, a boiler can generate sewage in the operation process, the part of sewage needs to be continuously discharged to a flash tank for decompression and then discharged to a municipal pipe network, through measurement and calculation, the temperature of continuous drainage (continuous drainage) after decompression is 104 ℃, the generated flow is about 20t/h, the continuous drainage carries a large amount of heat, if the heat cannot be timely recycled, energy loss is caused, in the prior art, the heat recycling of the continuous drainage mainly utilizes steam generated in the flash tank decompression process for heat exchange, the liquid continuous drainage also has a large amount of heat, and the part of heat also needs to be recycled.
SUMMERY OF THE UTILITY MODEL
The present invention provides a boiler continuous drainage waste heat recovery device with simple structure and capable of effectively recovering continuous drainage waste heat, so as to solve at least one of the above technical problems.
The technical scheme for solving the technical problems is as follows:
a boiler continuous drainage waste heat recovery device comprises:
the periodic blowdown flash tank is used for receiving continuous drainage of the boiler;
a first pipeline is arranged between the periodic blowdown flash tank and the heat exchanger, one end of the first pipeline is connected with the bottom end of the periodic blowdown flash tank, the other end of the first pipeline is connected with a hot water inlet of the heat exchanger, and a first delivery pump is arranged on the first pipeline;
raw water heating system, raw water heating system is provided with raw water input tube and raw water output tube, raw water input tube with leading water pipe between the cold water entry of heat exchanger, leading water pipe's one end with raw water input tube connects, leading water pipe's the other end with the cold water entry of heat exchanger is connected, raw water output tube with be provided with drainage pipe between the cold water export of heat exchanger, drainage pipe's one end with raw water output tube connects, drainage pipe's the other end with the cold water exit linkage of heat exchanger.
The utility model has the beneficial effects that: the utility model is provided with the heat exchanger, the continuous drainage of the periodical blowdown flash tank can be subjected to heat exchange through the first pipeline, the cold raw water led out from the raw water input pipe can be heated, and the heated hot raw water is conveyed back to the raw water output pipe, so that the waste heat in the continuous drainage can be further recovered.
On the basis of the technical scheme, the utility model can be further improved as follows.
Furthermore, a process water tank is arranged at a hot water outlet of the heat exchanger, a second pipeline is arranged between the process water tank and the heat exchanger, one end of the second pipeline is connected with the hot water outlet of the heat exchanger, and the other end of the second pipeline is connected with the process water tank.
The beneficial effect of adopting the further scheme is that: the process water tank can receive the continuous drainage after heat exchange and cooling, and can be used by other low-heat users, such as a desulfurization process and a cooling tower.
Furthermore, the second pipeline comprises a pipeline A and a pipeline B, a drain tank is arranged between the pipeline A and the pipeline B, one end of the pipeline A is connected with a hot water outlet of the heat exchanger, the other end of the pipeline A is connected with an inlet end of the drain tank, one end of the pipeline B is connected with an outlet end of the drain tank, and the other end of the pipeline B is connected with the process water tank.
The beneficial effect of adopting the further scheme is that: the drain tank is arranged to temporarily store the heat exchange and cooling continuous drainage.
Furthermore, periodic blowdown flash tank includes first flash tank and second flash tank, first flash tank with be provided with the connecting tube between the second flash tank, the one end of connecting tube with the bottom of first flash tank is connected, the other end of connecting tube with the top of second flash tank is connected, be provided with the second delivery pump on the connecting tube.
The beneficial effect of adopting the further scheme is that: adopt first flash tank can realize the decompression of even drainage, and the second flash tank can keep in even drainage after the decompression.
Further, the first pipeline is a heat-insulating jacket sleeve.
The beneficial effect of adopting the further scheme is that: the heat loss in the continuous drainage conveying process can be reduced by adopting the heat-insulating jacket pipe.
Further, the heat exchanger is a plate heat exchanger.
The beneficial effect of adopting the further scheme is that: the plate heat exchanger has good heat exchange effect.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. a periodic blowdown flash tank; 2. a first conduit; 3. a heat exchanger; 4. a raw water input pipe; 5. a raw water output pipe; 6. a water conduit; 7. a water discharge pipeline; 8. a drain tank; 9. a pipeline B; 10. a process water tank; 11. a first flash tank; 12. a second flash tank; 13. connecting a pipeline; 14. a second delivery pump; 15. a first delivery pump; 16. and a pipeline A.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the utility model.
Examples
As shown in fig. 1, the core of the present invention is to provide a boiler continuous drainage waste heat recovery device, which comprises: the periodic blowdown flash tank 1 is used for receiving boiler continuous drainage, in the embodiment, three sets of boilers are arranged, each set of boiler discharges continuous drainage into the positioning blowdown flash tank, the temperature of the continuous drainage is 104 ℃, and the flow rate is 20 t/h; a first pipeline 2 is arranged between the periodic blowdown flash tank 1 and the heat exchanger 3, one end of the first pipeline 2 is connected with the bottom end of the periodic blowdown flash tank 1, the other end of the first pipeline 2 is connected with a hot water inlet of the heat exchanger 3, and a first delivery pump 15 is arranged on the first pipeline 2; raw water heating system, raw water heating system is provided with raw water input tube 4 and raw water output tube 5, leading water pipeline 6 between the cold water entry of raw water input tube 4 and heat exchanger 3, the one end and the raw water input tube 4 of leading water pipeline 6 are connected, the other end and the cold water entry of heat exchanger 3 of leading water pipeline 6 are connected, be provided with drainage pipe 7 between the cold water export of raw water output tube 5 and heat exchanger 3, the one end and the raw water output tube 5 of drainage pipe 7 are connected, the other end and the cold water exit linkage of heat exchanger 3 of drainage pipe 7.
It is noted that the temperature of the continuous drainage water is reduced to 30 ℃ after passing through the heat exchanger 3, the temperature of the raw water is increased to 28-30 ℃ from 18 ℃ after passing through the heat exchanger 3, and the raw water is conveyed for use through the raw water output pipe 5 after heat exchange.
It should be further noted that the raw water heating system is provided with two sets of raw water heaters, the inlet ends of the raw water heaters are connected with the raw water input pipe 4, the outlet ends of the raw water heaters are connected with the raw water output pipe 5, the raw water input pipe 4 provides raw water with the temperature of 18 ℃ for the raw water heaters, the water guide pipeline 6 leads out raw water with the temperature of 60t/h from the raw water input pipe 4 side for heat exchange, and the rest raw water is conveyed to the raw water heaters for heating, so that raw water with the temperature of 28-30 ℃ is obtained from the raw water output pipe 5 for users to use.
Preferably, a process water tank 10 is arranged at a hot water outlet of the heat exchanger 3, a second pipeline is arranged between the process water tank 10 and the heat exchanger 3, one end of the second pipeline is connected with the hot water outlet of the heat exchanger 3, and the other end of the second pipeline is connected with the process water tank 10, and it should be noted that the process water tank 10 is a desulfurization process water tank for a desulfurization system, so as to provide cold continuous drainage at 30 ℃ for the desulfurization system after heat exchange.
Preferably, the second pipeline comprises a pipeline A16 and a pipeline B9, a drain tank 8 is arranged between the pipeline A16 and the pipeline B9, one end of the pipeline A16 is connected with a hot water outlet of the heat exchanger 3, the other end of the pipeline A16 is connected with an inlet end of the drain tank 8, one end of the pipeline B9 is connected with an outlet end of the drain tank 8, and the other end of the pipeline B9 is connected with the process water tank 10.
It should be noted that the drain tank 8 is used for receiving the 30 ℃ cold continuous drainage, the quality of the water continuously drained by the drain tank 8 is monitored, and the cold continuous drainage is conveyed to the cooling tower for use when the cold continuous drainage which does not meet the use requirement of the water quality and the water level of the desulfurization process water tank is sufficient.
Preferably, the periodic blowdown flash tank 1 includes a first flash tank 11 and a second flash tank 12, a connection pipe 13 is disposed between the first flash tank 11 and the second flash tank 12, one end of the connection pipe 13 is connected to the bottom of the first flash tank 11, the other end of the connection pipe 13 is connected to the top of the second flash tank 12, and a second transfer pump 14 is disposed on the connection pipe 13.
It should be noted that the inlet end of the first flash tank 11 receives the continuous drainage water from the boiler, the vapor heat exchanger 3 is disposed at the top of both the first flash tank 11 and the second flash tank 12 to realize the decompression of the continuous drainage water and recover the energy of the continuous drainage water vapor, and the continuous drainage water temperature at the outlet end of the second flash tank 12 is 104 ℃.
Preferably, the first pipe 2 is a heat-insulating jacketed pipe, and it should be noted that the first pipe 2 includes an inner pipe and an outer pipe, the outer pipe is sleeved outside the inner pipe, and a jacket is arranged between the outer pipe and the inner pipe at an interval, and in order to reduce heat loss, a vacuum is pumped in the jacket.
Preferably, the heat exchanger 3 is a plate heat exchanger, and it should be noted that, in this embodiment, the plate heat exchanger is a 2MW plate heat exchanger.
In the description of the present invention, it is to be understood that the terms "center", "length", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "inner", "outer", "peripheral side", "circumferential", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and simplicity of description, and do not indicate or imply that the system or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (6)
1. The utility model provides a boiler is drainage waste heat recovery device even which characterized in that includes:
the periodic blowdown flash tank (1) is used for receiving continuous drainage of the boiler;
a first pipeline (2) is arranged between the periodic blowdown flash tank (1) and the heat exchanger (3), one end of the first pipeline (2) is connected with the bottom end of the periodic blowdown flash tank (1), the other end of the first pipeline (2) is connected with a hot water inlet of the heat exchanger (3), and a first delivery pump (15) is arranged on the first pipeline (2);
raw water heating system, raw water heating system is provided with raw water input tube (4) and raw water output tube (5), raw water input tube (4) with leading water pipeline (6) between the cold water entry of heat exchanger (3), the one end of leading water pipeline (6) with raw water input tube (4) are connected, the other end of leading water pipeline (6) with the cold water entry linkage of heat exchanger (3), raw water output tube (5) with be provided with drainage pipe (7) between the cold water export of heat exchanger (3), the one end of drainage pipe (7) with raw water output tube (5) are connected, the other end of drainage pipe (7) with the cold water exit linkage of heat exchanger (3).
2. The boiler continuous drainage waste heat recovery device according to claim 1, wherein a process water tank (10) is arranged at a hot water outlet of the heat exchanger (3), a second pipeline is arranged between the process water tank (10) and the heat exchanger (3), one end of the second pipeline is connected with the hot water outlet of the heat exchanger (3), and the other end of the second pipeline is connected with the process water tank (10).
3. The boiler continuous drainage waste heat recovery device according to claim 2, wherein the second pipeline comprises a pipeline A (16) and a pipeline B (9), a drain tank (8) is arranged between the pipeline A (16) and the pipeline B (9), one end of the pipeline A (16) is connected with a hot water outlet of the heat exchanger (3), the other end of the pipeline A (16) is connected with an inlet end of the drain tank (8), one end of the pipeline B (9) is connected with an outlet end of the drain tank (8), and the other end of the pipeline B (9) is connected with the process water tank (10).
4. The boiler continuous drainage waste heat recovery device according to claim 1, wherein the periodic blowdown flash tank (1) comprises a first flash tank (11) and a second flash tank (12), a connecting pipeline (13) is arranged between the first flash tank (11) and the second flash tank (12), one end of the connecting pipeline (13) is connected with the bottom of the first flash tank (11), the other end of the connecting pipeline (13) is connected with the top end of the second flash tank (12), and a second delivery pump (14) is arranged on the connecting pipeline (13).
5. The boiler continuous drainage waste heat recovery device according to claim 1, wherein the first pipeline (2) is a heat-insulating jacket pipe.
6. The boiler continuous drainage waste heat recovery device according to any one of claims 1 to 5, characterized in that the heat exchanger (3) is a plate heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120573726.XU CN215675140U (en) | 2021-03-22 | 2021-03-22 | Boiler continuous drainage waste heat recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120573726.XU CN215675140U (en) | 2021-03-22 | 2021-03-22 | Boiler continuous drainage waste heat recovery device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215675140U true CN215675140U (en) | 2022-01-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120573726.XU Active CN215675140U (en) | 2021-03-22 | 2021-03-22 | Boiler continuous drainage waste heat recovery device |
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| Country | Link |
|---|---|
| CN (1) | CN215675140U (en) |
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2021
- 2021-03-22 CN CN202120573726.XU patent/CN215675140U/en active Active
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