CN220338434U - Boiler fixed exhaust steam waste heat recovery system - Google Patents
Boiler fixed exhaust steam waste heat recovery system Download PDFInfo
- Publication number
- CN220338434U CN220338434U CN202321549978.4U CN202321549978U CN220338434U CN 220338434 U CN220338434 U CN 220338434U CN 202321549978 U CN202321549978 U CN 202321549978U CN 220338434 U CN220338434 U CN 220338434U
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- Prior art keywords
- boiler
- exhaust steam
- air
- heat exchanger
- recovery system
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- 239000002918 waste heat Substances 0.000 title claims abstract description 19
- 238000011084 recovery Methods 0.000 title claims abstract description 13
- 238000001816 cooling Methods 0.000 claims abstract description 14
- 230000000737 periodic effect Effects 0.000 claims abstract description 8
- 239000002699 waste material Substances 0.000 abstract description 9
- 230000007613 environmental effect Effects 0.000 abstract description 5
- 238000010521 absorption reaction Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 239000003657 drainage water Substances 0.000 description 8
- 230000002209 hydrophobic effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000009851 ferrous metallurgy Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model discloses a boiler fixed exhaust steam waste heat recovery system, which comprises a periodic blowdown flash tank, a blowdown cooling tank and a boiler, wherein the periodic blowdown flash tank comprises a fixed exhaust steam pipeline, a heat exchanger and a blower; the heat exchanger is arranged on the fixed-exhaust steam exhaust pipeline and is connected to the air blower; the air outlet end of the air feeder is connected to the boiler; the air is subjected to heat exchange with exhaust steam in the fixed exhaust steam pipeline at the heat exchanger, and the air after waste heat absorption enters the boiler through the air feeder to provide air inlet temperature for the boiler, so that the temperature of steam directly discharged into the environment is reduced, the energy waste is reduced, and the influence on environmental heat pollution is reduced.
Description
Technical Field
The utility model relates to a boiler blow-down system, in particular to a boiler fixed-exhaust steam exhaust waste heat recovery system.
Background
In the existing power system, petrochemical enterprises, ferrous metallurgy and other enterprises, the waste steam mixed in the boiler pollution discharge process is directly discharged through a periodic pollution discharge expander, so that part of water resources and energy are wasted, and environmental thermal pollution and noise are caused.
Disclosure of Invention
In view of the defects of the existing boiler blow-down system in the utilization of the fixed exhaust steam waste heat, the utility model provides the boiler fixed exhaust steam waste heat recovery system which can be utilized.
In order to achieve the above purpose, the embodiment of the present utility model adopts the following technical scheme:
the boiler constant-exhaust steam exhaust waste heat recovery system comprises a regular blowdown flash tank, a blowdown cooling tank and a boiler, wherein the regular blowdown flash tank comprises a constant-exhaust steam exhaust pipeline, a heat exchanger and a blower; the heat exchanger is arranged on the fixed-exhaust steam exhaust pipeline and is connected to the air blower; the air outlet end of the air feeder is connected to the boiler; the air exchanges heat with exhaust steam in the fixed exhaust steam pipeline at the heat exchanger, and the air after absorbing the waste heat enters the boiler through the blower to provide air inlet temperature for the boiler.
The heat exchanger comprises a drainage pipeline and a drainage tank; the heat exchanger is connected to the drain tank by a drain pipe.
The heat exchanger comprises an air inlet end and an air outlet; the normal temperature air enters the heat exchanger from the air inlet end, and the exhaust port is used for discharging steam which is not completely condensed into liquid water.
The regular blowdown flash tank is connected to the blowdown cooling tank through a pipeline.
And a bypass valve is arranged on a pipeline between the regular blowdown flash tank and the blowdown cooling tank.
The implementation of the utility model has the advantages that:
the heat exchanger is arranged on the steam exhaust pipeline of the regular blowdown flash vessel, the waste heat of the exhaust steam is absorbed by the air, the air is sent to the boiler through the air feeder, the air inlet temperature is provided for the boiler, the temperature of the steam directly discharged into the environment is reduced, the waste of energy is reduced, a part of the exhaust steam is liquefied into drainage water after heat exchange, and the drainage water enters the drainage water tank through the drainage water pipeline to be recycled, so that the waste of water resources is reduced, and meanwhile, the influence on environmental heat pollution is also reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a fixed exhaust steam of a prior art boiler;
fig. 2 is a schematic structural diagram of a boiler fixed exhaust steam waste heat recovery system according to the present utility model.
Legend description: 1. a regular blowdown flash tank; 11. a fixed exhaust steam pipeline; 12. a heat exchanger; 121. a hydrophobic conduit; 122. a hydrophobic tank; 123. an air inlet end; 124. an exhaust port; 13. a blower; 2. a sewage discharge cooling pool; 21. a bypass valve; 3. a boiler.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1, in the prior art, the schematic diagram of periodic steam exhaust of a boiler is shown, it can be seen from the diagram that the high-temperature steam in the periodic blowdown flash vessel (reference numeral a) is directly discharged through the fixed steam exhaust pipeline (reference numeral a 1) without any treatment, and this part of energy is not fully utilized, so that energy waste is caused, and meanwhile, the high-temperature steam is directly discharged into the environment, which also causes thermal pollution to the environment, and the high-temperature steam usually has high pressure and is often accompanied with noise during discharging.
As shown in fig. 2, the boiler constant-exhaust steam exhaust waste heat recovery system comprises a regular blowdown flash tank 1, a blowdown cooling tank 2 and a boiler 3, wherein the regular blowdown flash tank 1 comprises a constant-exhaust steam exhaust pipeline 11, a heat exchanger 12 and a blower 13; the heat exchanger 12 is arranged on the fixed exhaust steam pipeline 11 and is connected to the blower 13; the air outlet end of the air blower 13 is connected to the boiler 3; the air exchanges heat with the exhaust steam in the fixed exhaust steam pipeline 11 at the heat exchanger 12, and the air after absorbing the waste heat enters the boiler 3 through the blower 13 to provide air inlet temperature for the boiler 3, so that the temperature of steam directly discharged into the environment is reduced, the energy waste is reduced, and the influence on environmental heat pollution is reduced.
In practical applications, the heat exchanger 12 includes a drain pipe 121 and a drain tank 122; the heat exchanger 12 is connected to a drain tank 122 by a drain pipe 121; the heat exchanger 12 also includes an air intake 123 and an exhaust 124; the normal temperature air enters the heat exchanger 12 from the air inlet end 123, the exhaust port 124 is used for discharging the steam which is not completely condensed into liquid water, after the exhaust steam in the regular blowdown flash vessel 1 exchanges heat with the air through the heat exchanger 12, part of the exhaust steam is liquefied into hydrophobic water, and the hydrophobic water enters the hydrophobic water tank 122 through the hydrophobic pipeline 121 for recycling, so that the waste of water resources is reduced, and part of the exhaust steam is discharged into the environment, the carried heat is reduced because of primary heat exchange, and the thermal pollution to the environment is also reduced.
The regular blowdown flash tank 1 is connected to the blowdown cooling tank 2 through a pipeline, and the drain water in the regular blowdown flash tank 1 is discharged into the blowdown cooling tank 2 for cooling treatment.
A bypass valve 21 is arranged on a pipeline between the periodic blowdown flash tank 1 and the blowdown cooling tank 2; for controlling the flow rate and the discharge time period of the periodical sewage drain to the sewage drain cooling tank 2.
The implementation of the utility model has the advantages that:
the heat exchanger is arranged on the steam exhaust pipeline of the regular blowdown flash vessel, the waste heat of the exhaust steam is absorbed by the air, the air is sent to the boiler through the air feeder, the air inlet temperature is provided for the boiler, the temperature of the steam directly discharged into the environment is reduced, the waste of energy is reduced, a part of the exhaust steam is liquefied into drainage water after heat exchange, and the drainage water enters the drainage water tank through the drainage water pipeline to be recycled, so that the waste of water resources is reduced, and meanwhile, the influence on environmental heat pollution is also reduced.
The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the technical scope of the present utility model should be included in the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.
Claims (5)
1. The constant exhaust steam waste heat recovery system of the boiler comprises a regular blowdown flash tank (1), a blowdown cooling tank (2) and the boiler (3), wherein the regular blowdown flash tank (1) comprises a constant exhaust steam pipeline (11), and is characterized by further comprising a heat exchanger (12) and a blower (13); the heat exchanger (12) is arranged on the fixed exhaust steam pipeline (11) and is connected to the air feeder (13); the air outlet end of the air feeder (13) is connected to the boiler (3).
2. The boiler fixed exhaust steam waste heat recovery system according to claim 1, wherein the heat exchanger (12) comprises a drain pipe (121) and a drain tank (122); the heat exchanger (12) is connected to a drain tank (122) by a drain pipe (121).
3. The boiler fixed exhaust steam waste heat recovery system according to claim 1, wherein the heat exchanger (12) comprises an air inlet end (123) and an exhaust port (124).
4. The boiler fixed exhaust steam waste heat recovery system according to claim 1, wherein the periodic blowdown flash vessel (1) is connected to a blowdown cooling tank (2) through a pipe.
5. The boiler fixed exhaust steam waste heat recovery system according to claim 4, wherein a bypass valve (21) is arranged on a pipeline between the periodic blowdown flash tank (1) and the blowdown cooling tank (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321549978.4U CN220338434U (en) | 2023-06-18 | 2023-06-18 | Boiler fixed exhaust steam waste heat recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321549978.4U CN220338434U (en) | 2023-06-18 | 2023-06-18 | Boiler fixed exhaust steam waste heat recovery system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220338434U true CN220338434U (en) | 2024-01-12 |
Family
ID=89459166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321549978.4U Active CN220338434U (en) | 2023-06-18 | 2023-06-18 | Boiler fixed exhaust steam waste heat recovery system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220338434U (en) |
-
2023
- 2023-06-18 CN CN202321549978.4U patent/CN220338434U/en active Active
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