CN107726345B - Clean flue gas reheat system of power plant - Google Patents
Clean flue gas reheat system of power plant Download PDFInfo
- Publication number
- CN107726345B CN107726345B CN201711080346.7A CN201711080346A CN107726345B CN 107726345 B CN107726345 B CN 107726345B CN 201711080346 A CN201711080346 A CN 201711080346A CN 107726345 B CN107726345 B CN 107726345B
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- heat exchange
- flue
- flue gas
- air inlet
- exchange tube
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 93
- 239000003546 flue gas Substances 0.000 title claims abstract description 93
- 238000009827 uniform distribution Methods 0.000 claims abstract description 20
- 238000003303 reheating Methods 0.000 claims abstract description 18
- 238000010438 heat treatment Methods 0.000 claims description 58
- 239000010408 film Substances 0.000 claims description 28
- 238000005485 electric heating Methods 0.000 claims description 17
- 239000010409 thin film Substances 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 229920000742 Cotton Polymers 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 10
- 238000010586 diagram Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/08—Arrangements of devices for treating smoke or fumes of heaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2900/00—Special arrangements for conducting or purifying combustion fumes; Treatment of fumes or ashes
- F23J2900/15081—Reheating of flue gases
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The application discloses a power plant clean flue gas reheating system, which comprises a flue and a heat exchange tube panel fixed in the flue; the flue gas uniform distribution screen is arranged in the air inlet conical pipe joint and comprises a round frame fixed in the air inlet conical pipe joint, a plurality of propeller fans are uniformly distributed in the frame, and the air inlet and outlet directions of the propeller fans are the same as the flow direction of flue gas in the air inlet conical pipe joint. By using the reheating system disclosed by the application, before the clean flue gas exchanges heat with the heat exchange tube panel, the clean flue gas is uniformly distributed in the whole heat exchange flue through the flue gas uniform distribution panel, and is uniformly and fully contacted with the heat exchange tube panel, so that the heat exchange effect is improved, and the energy is saved.
Description
Technical Field
The application relates to a net flue gas reheating system of a power plant.
Background
In order to raise the temperature of the flue gas discharged from the power plant at the last, a flue gas reheating device is generally installed in the last flue, hot gas or hot water in the boiler is introduced into the flue to reheat the desulphurized and denitrated flue gas discharged from the absorption tower, and the flue gas is discharged after reaching the discharge temperature. The existing clean flue gas cannot be evenly dispersed after entering a flue from an absorption tower, so that the heat exchange area with a reheating device is uneven, and the heat exchange effect is poor. The prior art is urgently needed for a power plant clean flue gas reheating system capable of improving heat exchange effect and saving energy.
Disclosure of Invention
The application aims to overcome the defects in the prior art and provides a clean flue gas reheating system of a power plant, which can improve the heat exchange effect and save energy.
In order to achieve the above purpose, the technical scheme of the application is to provide a power plant clean flue gas reheating system, which comprises a flue and a heat exchange tube panel fixed in the flue, wherein the flue comprises an air inlet flue, a heat exchange flue and an exhaust flue which are sequentially arranged along the flow direction of flue gas, and the air inlet flue and the exhaust flue are respectively communicated with the heat exchange flue through an air inlet bent pipe and an exhaust bent pipe; the pipe diameter of the heat exchange flue is larger than that of the air inlet elbow and the air outlet elbow, and the heat exchange flue is correspondingly connected with the air inlet elbow and the air outlet elbow through an air inlet conical pipe joint and an air outlet conical pipe joint respectively; the heat exchange tube panel is fixed on the inner wall of the heat exchange flue through a heat exchange tube panel bracket, the heat exchange tube panel is composed of a plurality of heat exchange tubes which are bent and roundabout in rows, and two ends of the plurality of heat exchange tubes are communicated with the water inlet main pipe and the water outlet main pipe; the flue gas uniform distribution screen is arranged in the air inlet conical pipe joint and comprises a round frame fixed in the air inlet conical pipe joint, a plurality of propeller fans are uniformly distributed in the frame, and the air inlet and outlet directions of the propeller fans are the same as the flow direction of flue gas in the air inlet conical pipe joint.
By using the reheating system disclosed by the application, before the clean flue gas exchanges heat with the heat exchange tube panel, the clean flue gas is uniformly distributed in the whole heat exchange flue through the flue gas uniform distribution panel, and is uniformly and fully contacted with the heat exchange tube panel, so that the heat exchange effect is improved, and the energy is saved.
Preferably, the flue gas uniform distribution screen is provided with two stages along the flowing direction of flue gas, and comprises a first stage flue gas uniform distribution screen and a second stage flue gas uniform distribution screen, wherein the size of the first stage flue gas uniform distribution screen is smaller than that of the second stage flue gas uniform distribution screen. The design can further scatter and uniformly distribute the clean flue gas through two-stage uniform distribution.
Preferably, the heat exchange tube panel is cuboid, an auxiliary heat exchange tube group is arranged in the middle of the lower end of the heat exchange tube panel, the auxiliary heat exchange tube group comprises a plurality of U-shaped auxiliary heat exchange tubes, and two ends of each auxiliary heat exchange tube are communicated with adjacent heat exchange tubes; the heat exchange tubes attached to the middle of the lower end of the heat exchange tube panel are bent downwards and are contained in the exhaust conical tube joint, and the heat exchange tubes attached to the middle of the lower end of the heat exchange tube panel are arranged in rows and are communicated with the heat exchange tubes arranged in corresponding rows.
The design can be better arranged in the exhaust conical pipe joint by the auxiliary heat exchange pipe, the original idle space is utilized, the heat exchange area is increased when the flue gas just enters the flue, and the auxiliary heat exchange pipe is directly communicated with the heat exchange pipe, so that the installation and the transformation are easier, and the transformation can be performed on the existing equipment.
Preferably, the outer walls of the auxiliary heat exchange tube and the heat exchange tube are welded with metal spiral fins. Such a design may further enhance the heat exchange effect.
Preferably, an auxiliary heating flue is communicated between the air inlet flue and the air outlet bent pipe, a vertical electric heating pipe is arranged in the auxiliary heating flue, an inner heating convex surface is arranged on the outer surface of the electric heating pipe in a protruding mode, an outer heating convex surface is arranged on the inner wall of the auxiliary heating flue, the outer heating convex surfaces and the inner heating convex surfaces are arranged in a staggered mode, and a bent flue gas heating channel is formed between the inner heating convex surfaces and the outer heating convex surfaces. By means of the design, auxiliary heating can be performed through the auxiliary heating flue and the clean flue gas, and heating efficiency is further improved. A curved flue gas heating channel is formed between the inner heating convex surface and the outer heating convex surface, so that clean flue gas and a heating source are fully contacted to exchange heat, and the heat exchange effect is improved.
Preferably, a solar film battery is fixed on the surface of the flue, the solar film battery is in charging connection with a storage battery, and the storage battery is in power supply connection with an electric heating pipe; the photovoltaic thin films of the solar thin film battery are spirally fixed on the surface of the flue, and gaps are reserved between the photovoltaic thin films; the flue surface is fixed with the fixed strip, photovoltaic film is fixed on the fixed strip surface. The design can drive the electric heating pipe to generate heat through solar energy, so that the heat exchange pressure in the heat exchange flue is reduced, and the energy is further saved.
Preferably, a heat insulation cotton layer is arranged between the photovoltaic film and the fixing strip. Such a design can avoid heating the photovoltaic film.
The application has the advantages and beneficial effects that: by using the reheating system disclosed by the application, before the clean flue gas exchanges heat with the heat exchange tube panel, the clean flue gas is uniformly distributed in the whole heat exchange flue through the flue gas uniform distribution panel, and is uniformly and fully contacted with the heat exchange tube panel, so that the heat exchange effect is improved, and the energy is saved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present application;
FIG. 2 is an enlarged schematic view of the structure A in FIG. 1;
FIG. 3 is a schematic diagram of a connection structure of a heat exchange tube and an auxiliary heat exchange tube;
FIG. 4 is a schematic view of the internal structure of the auxiliary heating flue;
FIG. 5 is a schematic view of a solar membrane and flue connection structure;
fig. 6 is a schematic diagram of the gap distribution (the fixing bars are omitted).
In the figure: 1. a heat exchange tube panel; 2. an air inlet flue; 3. an air inlet elbow; 4. an air inlet conical pipe joint; 5. a heat exchange flue; 6. an exhaust taper pipe joint; 7. an exhaust elbow; 8. an exhaust flue; 9. a heat exchange tube; 12. attaching a heat exchange tube group; 13. attaching a heat exchange tube; 14. a circular frame; 15. a propeller fan; 16. a first-stage flue gas uniform distribution screen; 17. a second-stage flue gas uniform distribution screen; 18. auxiliary heating flue; 19. an electric heating tube; 20. an internal heating convex surface; 21. externally heating the convex surface; 22. a solar thin film; 23. a gap; 24. a fixing strip; 25. and a heat insulation cotton layer.
Detailed Description
The following describes the embodiments of the present application further with reference to the drawings and examples. The following examples are only for more clearly illustrating the technical aspects of the present application, and are not intended to limit the scope of the present application.
As shown in fig. 1 to 6, a clean flue gas reheating system of a power plant comprises a flue and a heat exchange tube screen 1 fixed in the flue, wherein the flue comprises an air inlet flue 2, a heat exchange flue 5 and an exhaust flue 8 which are sequentially arranged along the flow direction of flue gas, and the air inlet flue 2 and the exhaust flue 8 are respectively communicated with the heat exchange flue 5 through an air inlet bent pipe 3 and an exhaust bent pipe 7; the pipe diameter of the heat exchange flue 5 is larger than the pipe diameters of the air inlet elbow 3 and the air outlet elbow 7, and the heat exchange flue 5 is correspondingly connected with the air inlet elbow 3 and the air outlet elbow 7 through an air inlet conical pipe joint 4 and an air outlet conical pipe joint 6 respectively; the heat exchange tube screen 1 is fixed on the inner wall of the heat exchange flue 5 through a support of the heat exchange tube screen 1, the heat exchange tube screen 1 is composed of a plurality of heat exchange tubes 9 which are bent and roundabout in rows, and two ends of the plurality of heat exchange tubes 9 are communicated with a water inlet main pipe and a water outlet main pipe; the flue gas uniform distribution screen is arranged in the air inlet conical tube joint 4 and comprises a circular frame 14 fixed in the air inlet conical tube joint 4, a plurality of propeller fans 15 are uniformly distributed in the frame, and the air inlet and outlet directions of the propeller fans 15 are the same as the flow direction of flue gas in the air inlet conical tube joint 4.
The flue gas equipartition screen is provided with the two-stage along the flow direction of flue gas, including first order flue gas equipartition screen 16 and second grade flue gas equipartition screen 17, first order flue gas equipartition screen 16 size is less than second grade flue gas equipartition screen 17 size.
The heat exchange tube panel 1 is cuboid, an auxiliary heat exchange tube group 12 is arranged in the middle of the lower end of the heat exchange tube panel 1, the auxiliary heat exchange tube group 12 comprises a plurality of U-shaped auxiliary heat exchange tubes 13, and two ends of each auxiliary heat exchange tube 13 are communicated with adjacent heat exchange tubes 9; the auxiliary heat exchange tubes 13 in the middle of the lower end of the heat exchange tube panel 1 are bent downwards and are contained in the exhaust conical tube joint 6, and the auxiliary heat exchange tubes 13 are arranged in rows and are communicated with the heat exchange tubes 9 arranged in corresponding rows.
And metal spiral fins are welded on the outer walls of the auxiliary heat exchange tube 13 and the heat exchange tube 9.
An auxiliary heating flue 18 is communicated between the air inlet flue 2 and the air outlet bent pipe 7, a vertical electric heating pipe 19 is arranged in the auxiliary heating flue 18, an inner heating convex surface 20 is arranged on the outer surface of the electric heating pipe 19 in a protruding mode, an outer heating convex surface 21 is arranged on the inner wall of the auxiliary heating flue 18, the outer heating convex surfaces 21 and the inner heating convex surfaces 20 are arranged in a staggered mode, and a bent flue gas heating channel is formed between the inner heating convex surfaces 20 and the outer heating convex surfaces 21.
A solar film 22 battery is fixed on the surface of the flue, the solar film 22 battery is in charging connection with a storage battery, and the storage battery is in power supply connection with the electric heating pipe 19; the photovoltaic films of the solar film 22 battery are spirally fixed on the surface of the flue, and gaps 23 are reserved between the photovoltaic films; the flue surface is fixed with fixed strip 24, photovoltaic film fixes at fixed strip 24 surface.
A heat insulation cotton layer 25 is arranged between the photovoltaic film and the fixing strip 24.
Example 1
The flue gas purifying and reheating system of the power plant comprises a flue and a heat exchange tube screen 1 fixed in the flue, wherein the flue comprises an air inlet flue 2, a heat exchange flue 5 and an exhaust flue 8 which are sequentially arranged along the flow direction of the flue gas, and the air inlet flue 2 and the exhaust flue 8 are respectively communicated with the heat exchange flue 5 through an air inlet bent pipe 3 and an exhaust bent pipe 7; the pipe diameter of the heat exchange flue 5 is larger than the pipe diameters of the air inlet elbow 3 and the air outlet elbow 7, and the heat exchange flue 5 is correspondingly connected with the air inlet elbow 3 and the air outlet elbow 7 through an air inlet conical pipe joint 4 and an air outlet conical pipe joint 6 respectively; the heat exchange tube screen 1 is fixed on the inner wall of the heat exchange flue 5 through a support of the heat exchange tube screen 1, the heat exchange tube screen 1 is composed of a plurality of heat exchange tubes 9 which are bent and roundabout in rows, and two ends of the plurality of heat exchange tubes 9 are communicated with a water inlet main pipe and a water outlet main pipe; the flue gas uniform distribution screen is arranged in the air inlet conical tube joint 4 and comprises a circular frame 14 fixed in the air inlet conical tube joint 4, a plurality of propeller fans 15 are uniformly distributed in the frame, and the air inlet and outlet directions of the propeller fans 15 are the same as the flow direction of flue gas in the air inlet conical tube joint 4.
The flue gas equipartition screen is provided with the two-stage along the flow direction of flue gas, including first order flue gas equipartition screen 16 and second grade flue gas equipartition screen 17, first order flue gas equipartition screen 16 size is less than second grade flue gas equipartition screen 17 size. The first-stage flue gas uniform distribution screen 16 and the second-stage flue gas uniform distribution screen 17 are both in a circular frame 14 fixed in the air inlet conical pipe joint 4, a plurality of propeller fans 15 are uniformly distributed in the frame, and the air inlet and outlet directions of the propeller fans 15 are the same as the flow direction of flue gas in the air inlet conical pipe joint 4.
When the flue gas purifying device is used, the flue gas purifying device enters the heat exchange flue 5 from the air inlet flue 2, the air inlet bent pipe 3 and the air inlet conical pipe joint 4, and as the flue gas purifying device flows in the flue to be disordered, the air flow distribution is uneven, the flue gas purifying device is contacted with the propeller fans 15 on the first-stage flue gas uniform distribution screen 16 and the second-stage flue gas uniform distribution screen 17 and scattered again by the propeller fans 15, so that the air flow distribution of the flue gas purifying device is uniform, and the flue gas purifying device is in uniform contact with the heat exchange pipe screen 1 for heat exchange, and the heat exchange effect can be improved.
Example 2
For further optimization of the embodiment 1, the heat exchange tube panel 1 is in a cuboid shape, an auxiliary heat exchange tube group 12 is arranged in the middle of the lower end of the heat exchange tube panel 1, the auxiliary heat exchange tube group 12 comprises a plurality of U-shaped auxiliary heat exchange tubes 13, and two ends of each auxiliary heat exchange tube 13 are communicated with adjacent heat exchange tubes 9; the auxiliary heat exchange tubes 13 in the middle of the lower end of the heat exchange tube panel 1 are bent downwards and are contained in the exhaust conical tube joint 6, and the auxiliary heat exchange tubes 13 are arranged in rows and are communicated with the heat exchange tubes 9 arranged in corresponding rows.
And metal spiral fins are welded on the outer walls of the auxiliary heat exchange tube 13 and the heat exchange tube 9.
When in use, the clean flue gas exchanges heat with the heat exchange tube panel 1 and the heat exchange tube group 12 inside the exhaust conical tube joint 6, so that the heat exchange area is increased, and the heat exchange efficiency per unit time is improved. The auxiliary heat exchange tubes 13 are arranged in rows and are communicated with the heat exchange tubes 9 arranged in corresponding rows, so that the conventional equipment is easy to reform.
Example 3
An auxiliary heating flue 18 is communicated between the air inlet flue 2 and the air outlet bent pipe 7, a vertical electric heating pipe 19 is arranged in the auxiliary heating flue 18, an inner heating convex surface 20 is arranged on the outer surface of the electric heating pipe 19 in a protruding mode, an outer heating convex surface 21 is arranged on the inner wall of the auxiliary heating flue 18, the outer heating convex surfaces 21 and the inner heating convex surfaces 20 are arranged in a staggered mode, and a bent flue gas heating channel is formed between the inner heating convex surfaces 20 and the outer heating convex surfaces 21.
A solar film 22 battery is fixed on the surface of the flue, the solar film 22 battery is in charging connection with a storage battery, and the storage battery is in power supply connection with the electric heating pipe 19; the photovoltaic films of the solar film 22 battery are spirally fixed on the surface of the flue, and gaps 23 are reserved between the photovoltaic films; the flue surface is fixed with fixed strip 24, photovoltaic film fixes at fixed strip 24 surface.
A heat insulation cotton layer 25 is arranged between the photovoltaic film and the fixing strip 24.
When the solar energy flue is used, the solar film 22 battery is fixed on the surface of the flue, the flue is the flue which can be irradiated by sunlight outdoors, and because the surfaces of the flue are in an idle state at ordinary times, the photovoltaic film of the film battery can be spirally fixed on the surface of the flue to generate electricity, the storage battery is charged, then the electricity of the storage battery is supplied to the electric heating pipe 19 to generate heat, the electric heating pipe 19 can be driven by solar energy to generate heat, the heat exchange pressure in the heat exchange flue 5 is reduced, and the energy is further saved.
The photovoltaic film of the solar film 22 battery is spirally fixed on the surface of the flue, a gap 23 is reserved between the photovoltaic films, so that heat on the surface of the flue is discharged through the gap 23, a certain height difference exists between the fixing strip 24 and the surface of the flue, and the heat is emitted from the gap between the fixing strip 24 and the surface of the flue and the gap 23. The insulating cotton layer 25 is also designed to further protect the photovoltaic film.
After the electric heating pipe 19 is electrified and heated, the inner heating convex surface 20 (copper) is directly heated, the outer heating convex surface 21 (copper) is indirectly heated, and a curved flue gas heating channel is formed between the inner heating convex surface 20 and the outer heating convex surface 21, so that clean flue gas and a heating source are fully contacted and exchange heat, and the heat exchange effect is improved.
The foregoing is merely a preferred embodiment of the present application, and it should be noted that it will be apparent to those skilled in the art that several modifications and variations can be made without departing from the technical principle of the present application, and these modifications and variations should also be regarded as the scope of the application.
Claims (7)
1. The utility model provides a clean flue gas reheat system of power plant which characterized in that: the flue comprises an air inlet flue, a heat exchange flue and an exhaust flue, wherein the air inlet flue, the heat exchange flue and the exhaust flue are sequentially arranged along the flow direction of flue gas, and the air inlet flue and the exhaust flue are respectively communicated with the heat exchange flue through an air inlet bent pipe and an exhaust bent pipe; the pipe diameter of the heat exchange flue is larger than that of the air inlet elbow and the air outlet elbow, and the heat exchange flue is correspondingly connected with the air inlet elbow and the air outlet elbow through an air inlet conical pipe joint and an air outlet conical pipe joint respectively; the heat exchange tube panel is fixed on the inner wall of the heat exchange flue through a heat exchange tube panel bracket, the heat exchange tube panel is composed of a plurality of heat exchange tubes which are bent and roundabout in rows, and two ends of the plurality of heat exchange tubes are communicated with the water inlet main pipe and the water outlet main pipe; the flue gas uniform distribution screen is arranged in the air inlet conical pipe joint and comprises a round frame fixed in the air inlet conical pipe joint, a plurality of propeller fans are uniformly distributed in the frame, and the air inlet and outlet directions of the propeller fans are the same as the flow direction of flue gas in the air inlet conical pipe joint.
2. The plant net flue gas reheating system of claim 1, wherein: the flue gas equipartition screen is provided with the two-stage along the flow direction of flue gas, including first order flue gas equipartition screen and second grade flue gas equipartition screen, first order flue gas equipartition screen size is less than second grade flue gas equipartition screen size.
3. The plant net flue gas reheating system of claim 2, wherein: the heat exchange tube panel is cuboid, an auxiliary heat exchange tube group is arranged in the middle of the lower end of the heat exchange tube panel, the auxiliary heat exchange tube group comprises a plurality of U-shaped auxiliary heat exchange tubes, and two ends of each auxiliary heat exchange tube are communicated with adjacent heat exchange tubes; the heat exchange tubes attached to the middle of the lower end of the heat exchange tube panel are bent downwards and are contained in the exhaust conical tube joint, and the heat exchange tubes attached to the middle of the lower end of the heat exchange tube panel are arranged in rows and are communicated with the heat exchange tubes arranged in corresponding rows.
4. The plant net flue gas reheating system of claim 3, wherein: and the outer walls of the auxiliary heat exchange tube and the heat exchange tube are welded with metal spiral fins.
5. The plant net flue gas reheating system of claim 4, wherein: the auxiliary heating flue is communicated between the air inlet flue and the exhaust elbow, a vertical electric heating pipe is arranged in the auxiliary heating flue, an inner heating convex surface is arranged on the outer surface of the electric heating pipe in a protruding mode, an outer heating convex surface is arranged on the inner wall of the auxiliary heating flue, the outer heating convex surfaces and the inner heating convex surfaces are arranged in a staggered mode, and a bent flue gas heating channel is formed between the inner heating convex surfaces and the outer heating convex surfaces.
6. The plant net flue gas reheating system of claim 5, wherein: a solar thin film battery is fixed on the surface of the flue, the solar thin film battery is connected with a storage battery in a charging manner, and the storage battery is connected with an electric heating pipe in a power supply manner; the photovoltaic thin films of the solar thin film battery are spirally fixed on the surface of the flue, and gaps are reserved between the photovoltaic thin films; the flue surface is fixed with the fixed strip, photovoltaic film is fixed on the fixed strip surface.
7. The plant net flue gas reheating system of claim 6, wherein: and a heat insulation cotton layer is arranged between the photovoltaic film and the fixing strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711080346.7A CN107726345B (en) | 2017-11-06 | 2017-11-06 | Clean flue gas reheat system of power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711080346.7A CN107726345B (en) | 2017-11-06 | 2017-11-06 | Clean flue gas reheat system of power plant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107726345A CN107726345A (en) | 2018-02-23 |
| CN107726345B true CN107726345B (en) | 2023-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711080346.7A Active CN107726345B (en) | 2017-11-06 | 2017-11-06 | Clean flue gas reheat system of power plant |
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| CN (1) | CN107726345B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108843453A (en) * | 2018-08-07 | 2018-11-20 | 郑州佛光发电设备有限公司 | Exhaust silencing and cooling device and vehicle-mounted micro gas turbine generator set |
| CN112943454A (en) * | 2021-03-10 | 2021-06-11 | 上海电力大学 | Waste heat utilization system of gas turbine |
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| US4308990A (en) * | 1980-01-17 | 1982-01-05 | Anton Borovina | Flue gas heat recovery system |
| CN106017154A (en) * | 2016-06-25 | 2016-10-12 | 湖州鼎诚环保科技有限公司 | Heat exchange equipment used for flue gas desulfurization |
| CN205690430U (en) * | 2016-05-27 | 2016-11-16 | 江西江联国际工程有限公司 | A kind of air preheater |
| CN107062957A (en) * | 2017-06-13 | 2017-08-18 | 北京新世翼节能环保科技股份有限公司 | Shell and tube fluoroplastics flue gas flue gas heat-exchange unit |
| CN207501179U (en) * | 2017-11-06 | 2018-06-15 | 江阴德耐特重工科技有限公司 | A kind of power plant's neat stress reheat system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100352635B1 (en) * | 2000-11-28 | 2002-09-12 | 임중수 | A heating apparatus for reducing oil with wasting heat |
-
2017
- 2017-11-06 CN CN201711080346.7A patent/CN107726345B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4308990A (en) * | 1980-01-17 | 1982-01-05 | Anton Borovina | Flue gas heat recovery system |
| CN205690430U (en) * | 2016-05-27 | 2016-11-16 | 江西江联国际工程有限公司 | A kind of air preheater |
| CN106017154A (en) * | 2016-06-25 | 2016-10-12 | 湖州鼎诚环保科技有限公司 | Heat exchange equipment used for flue gas desulfurization |
| CN107062957A (en) * | 2017-06-13 | 2017-08-18 | 北京新世翼节能环保科技股份有限公司 | Shell and tube fluoroplastics flue gas flue gas heat-exchange unit |
| CN207501179U (en) * | 2017-11-06 | 2018-06-15 | 江阴德耐特重工科技有限公司 | A kind of power plant's neat stress reheat system |
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| CN107726345A (en) | 2018-02-23 |
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