CN107664443B - Flue gas reheat pipe assembly in low-temperature dust removal thermodynamic system of power plant - Google Patents
Flue gas reheat pipe assembly in low-temperature dust removal thermodynamic system of power plant Download PDFInfo
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- CN107664443B CN107664443B CN201711063061.2A CN201711063061A CN107664443B CN 107664443 B CN107664443 B CN 107664443B CN 201711063061 A CN201711063061 A CN 201711063061A CN 107664443 B CN107664443 B CN 107664443B
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- pipe
- outer ceramic
- flue gas
- ceramic tube
- power plant
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- 239000000428 dust Substances 0.000 title claims abstract description 15
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims description 44
- 239000003546 flue gas Substances 0.000 title claims description 44
- 239000000919 ceramic Substances 0.000 claims abstract description 78
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 45
- 239000010959 steel Substances 0.000 claims abstract description 45
- 239000000779 smoke Substances 0.000 claims abstract description 23
- 238000005299 abrasion Methods 0.000 claims description 13
- 229920000742 Cotton Polymers 0.000 claims description 12
- 238000003303 reheating Methods 0.000 claims description 10
- 230000007704 transition Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 15
- 238000011084 recovery Methods 0.000 abstract description 10
- 239000004071 soot Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 239000003344 environmental pollutant Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 238000009991 scouring Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/04—Constructions of heat-exchange apparatus characterised by the selection of particular materials of ceramic; of concrete; of natural stone
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
- F28F21/081—Heat exchange elements made from metals or metal alloys
- F28F21/082—Heat exchange elements made from metals or metal alloys from steel or ferrous alloys
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The application discloses a smoke heat pipe assembly in a low-temperature dust removal thermodynamic system of a power plant, which comprises a connecting frame and a reheat pipe group arranged in the connecting frame, wherein the reheat pipe group consists of a plurality of heat exchange pipes, the air inlet side of the reheat pipe group is also provided with a rectification anti-wear pipe group, the rectification anti-wear pipe group consists of a plurality of rectification anti-wear pipes, each rectification anti-wear pipe comprises an inner support steel pipe and an outer ceramic pipe, two ends of each inner support steel pipe are connected with the connecting frame, and the outer ceramic pipe is sleeved outside each inner support steel pipe. By using the reheat pipe assembly, the anti-wear pipe is of an inner steel and outer ceramic structure, so that heat exchange with smoke is reduced while anti-wear is realized, heat exchange with a subsequent reheat pipe group is reserved, and the residual heat recovery effect is improved.
Description
Technical Field
The application relates to a smoke reheat pipe assembly in a low-temperature dust removal thermodynamic system of a power plant.
Background
The environmental protection in China has been actively progressed, but the environmental situation is still severe, the energy structure mainly using coal leads to the high total emission amount of atmospheric pollutants, and the pollutant emission amount of coal-fired power plants is huge. In recent years, as the installed capacity of coal-fired power stations is continuously increased, the increase of the total amount of discharged pollutants causes great pressure on the atmospheric environment. The low-temperature dust removal technology which is raised at the end of nineties of the last century is an important technical means for solving the pollution discharge problem, wherein the technology of wet desulfurization, wet electric precipitation, hot medium water smoke heat recovery and smoke reheating device is mainly adopted, and the hot medium water smoke heat recovery and smoke reheating device is a thermodynamic system in the whole dust removal system. In thermodynamic systems, the flue gas reheat stack is an important heat recovery and soot cleaning component.
The flue gas of the coal-fired boiler contains a large amount of fly ash, and when the flue gas flushes the heating surface, the heating surface is worn. At present, the most common anti-abrasion measure is to add a steel pipe (anti-abrasion pipe) in front of the heating surface to resist scouring, and to block part of solid particles in the steel pipe area, so that the flue gas with residual temperature exchanges heat with the internal heat exchange pipe. The existing anti-abrasion pipe is a steel pipe, and can exchange heat with smoke while being abrasion-resistant, so that the smoke temperature is reduced, and the recovery of residual heat is not facilitated. The prior art is urgently needed for a flue gas reheat pipe assembly in a low-temperature dust removal thermodynamic system of a power plant, which can improve the residual heat recovery effect.
Disclosure of Invention
The application aims to overcome the defects in the prior art and provides a flue gas reheat pipe assembly in a low-temperature dust removal thermodynamic system of a power plant, which can improve the residual temperature recovery effect.
In order to achieve the above purpose, the technical scheme of the application provides a smoke reheat pipe assembly in a low-temperature dedusting thermodynamic system of a power plant, which comprises a connecting frame and a reheat pipe group arranged in the connecting frame, wherein the reheat pipe group consists of a plurality of heat exchange pipes, a rectification anti-wear pipe group is further arranged on the air inlet side of the reheat pipe group, the rectification anti-wear pipe group consists of a plurality of rectification anti-wear pipes, each rectification anti-wear pipe comprises an inner support steel pipe and an outer ceramic pipe, two ends of each inner support steel pipe are connected with the connecting frame, and each outer ceramic pipe is sleeved outside each inner support steel pipe.
By using the reheat pipe assembly, the anti-wear pipe is of an inner steel and outer ceramic structure, so that heat exchange with smoke is reduced while anti-wear is performed, heat exchange with a subsequent reheat pipe group is reserved, and the residual heat recovery effect is improved.
Preferably, a heat insulation cotton layer is arranged between the outer ceramic tube and the inner support steel tube, and the heat insulation cotton layer is arranged in a gap between the outer ceramic tube and the inner support steel tube at intervals and is annular. By means of the design, the heat-insulating cotton layer is arranged between the outer ceramic tube and the inner support steel tube besides the heat-insulating performance of the outer ceramic tube, heat is further isolated from being transferred to the support steel tube, and the heat-insulating cotton layer is arranged at intervals and is annular on the premise that the heat-insulating effect is guaranteed, so that materials can be saved.
Preferably, the outer ceramic tube is provided with a smoke rectifying groove, and the smoke rectifying groove is an annular groove or an open groove. By the design, the effect of adjusting the flow direction of the smoke of the outer ceramic tube is further improved while the outer ceramic tube is anti-wear, and particularly the design of the rectifying groove ensures that the smoke is easier to form stable and regular wind direction under the guidance of the groove body.
Preferably, the flue gas rectifying groove comprises an annular chute positioned at the end part of the outer ceramic tube and an annular straight groove positioned at the middle part of the outer ceramic tube; the annular chute is formed by communicating two arc-shaped chutes, and the inclined direction of the annular chute is inclined relative to the middle part of the ceramic tube outside the air inlet direction; the two arc-shaped inclined grooves are symmetrical relative to the axis of the outer ceramic tube.
When the flue gas flushes the outer ceramic tube, the flue gas gathers towards the middle part of the outer ceramic tube under the guiding action of the annular chute at the two ends of the outer ceramic tube, and the flue gas is regulated to be stable towards the reheating tube group at the middle part of the outer ceramic tube and flows towards a regular wind direction; the flue gas at the two ends of the outer ceramic tube is exchanged with the contacted connecting frame in the later heat exchange part to cause heat loss, and in order to reduce the loss, the flue gas is adjusted to the position of the reheating pipe group in the middle as much as possible, and is fully heat exchanged with the reheating pipe group in the middle, so that the heat loss is reduced, and the heat exchange effect is improved.
The smoke rectification groove is designed to be annular, and has the effect that when one side of the annular straight groove and one side of the annular chute are washed for a long time to deposit soot or the smoke rectification groove is damaged in long-time use, the outer ceramic tube can be rotated 180 degrees, so that one side of the outer ceramic tube, which is originally opposite to the direction of the smoke wind, is contacted with the smoke to be washed, and the overall use efficiency of the outer ceramic tube can be improved. The two arc-shaped inclined grooves are symmetrical relative to the axis of the outer ceramic tube, so that the original rectifying direction and effect can be maintained after the outer ceramic tube rotates 180 degrees.
Preferably, the inclined angle of the annular chute is gradually changed in transition in the joint area of the annular chute and the annular straight chute. The design is more beneficial to forming stable wind direction with regular flow direction.
Preferably, the ratio of the distribution length of the annular chute to the distribution length of the whole flue gas rectifying groove is less than 20%. Such a design facilitates heat exchange with the reheat pipe group concentrating the waste heat in the middle.
Preferably, two ends of the inner support steel pipe are connected with clamping blocks, and a buffer spring is arranged between the outer ceramic pipe and the clamping blocks. By the design, too much soot is deposited on the outer ceramic tube, when the smoke rectifying groove is blocked to reduce the rectifying effect, the outer ceramic tube is vibrated along the axial direction by the external vibration device, the soot deposition vibration cleaning is separated from the outer ceramic tube, and the rectifying and anti-abrasion effects are maintained. The buffer spring plays a role in buffering and protecting during vibration.
Preferably, two ends of the inner supporting steel pipe are connected with the connecting frame in a clamping mode through clamping blocks, clamping grooves matched with the clamping blocks are formed in the connecting frame, the clamping grooves are arranged in a row in the horizontal direction, the clamping grooves are arranged in a column in the vertical direction, replacement spaces are reserved between the clamping grooves and the clamping grooves in the vertical direction, and the height of the replacement spaces is larger than the thickness of the clamping blocks.
By means of the design, after the ceramic tube is used for a period of time, the inner support steel tube located at the innermost side is replaced to the outermost side, so that the scouring wear degree of each outer ceramic tube reaches the average level, and the overall service life of the equipment is prolonged.
In such a design, the heat exchange tube surface is provided with heat exchange fins. Such a design is advantageous for improving the heat exchange efficiency of the heat exchange tube.
The application has the advantages and beneficial effects that: by using the reheat pipe assembly, the anti-wear pipe is of an inner steel and outer ceramic structure, so that heat exchange with smoke is reduced while anti-wear is realized, heat exchange with a subsequent reheat pipe group is reserved, and the residual heat recovery effect is improved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present application;
FIG. 2 is a schematic diagram of a rectifying wear-resistant pipe according to the present application;
FIG. 3 is a schematic diagram of the distribution of the flue gas rectifying groove (the flue gas direction is vertical to the paper surface and inwards);
FIG. 4 is a top view of FIG. 3;
FIG. 5 is an expanded schematic view of the flue gas conditioning trough of FIG. 3;
FIG. 6 is a schematic diagram of the distribution of the card slots.
In the figure: 1. a connection frame; 2. a reheat pipe group; 3. a heat exchange tube; 4. a rectifying wear-resistant pipe group; 5. a rectifying wear-resistant pipe; 6. an inner support steel pipe; 7. a heat preservation cotton layer; 8. an annular chute; 9. an annular straight groove; 10. an arc chute; 11. a clamping block; 12. a buffer spring; 13. a clamping groove; 14. an outer ceramic tube.
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 flue gas reheat pipe assembly in a low-temperature dedusting thermodynamic system of a power plant comprises a connecting frame 1 and a reheat pipe group 2 arranged in the connecting frame 1, wherein the reheat pipe group 2 is composed of a plurality of heat exchange pipes 3, a rectification anti-wear pipe group 4 is further arranged on the air inlet side of the reheat pipe group 2, the rectification anti-wear pipe group 4 is composed of a plurality of rectification anti-wear pipe groups 4, the rectification anti-wear pipe 5 comprises an inner support steel pipe 6 and an outer ceramic pipe 14, two ends of the inner support steel pipe 6 are connected with the connecting frame 1, and the outer ceramic pipe 14 is sleeved outside the inner support steel pipe 6.
An insulating cotton layer 7 is arranged between the outer ceramic tube 14 and the inner support steel tube 6, and the insulating cotton layer 7 is arranged in a gap between the outer ceramic tube 14 and the inner support steel tube 6 at intervals and is annular.
The outer ceramic tube 14 is provided with a smoke flow regulating groove which is an annular groove or an open groove.
The flue gas rectifying groove comprises an annular chute 8 positioned at the end part of the outer ceramic tube 14 and an annular straight groove 9 positioned in the middle part of the outer ceramic tube 14; the annular chute 8 is formed by communicating two arc-shaped chute 10, and the inclined direction of the annular chute 8 is inclined relative to the middle part of the ceramic tube 14 outside the direction of the wind inlet; the two curved chute 10 are symmetrical with respect to the axis of the outer ceramic tube 14.
The annular chute 8 is connected with the annular straight groove 9 in an area, and the inclination angle of the annular chute 8 is in gradual transition.
The proportion of the distribution length of the annular chute 8 to the distribution length of the whole flue gas rectifying groove is less than 20%.
Clamping blocks 11 are connected to two ends of the inner support steel pipe 6, and buffer springs 12 are arranged between the outer ceramic pipe 14 and the clamping blocks 11.
The two ends of the inner supporting steel pipe 6 are clamped with the connecting frame 1 through clamping blocks 11, clamping grooves 13 matched with the clamping blocks 11 are formed in the connecting frame 1, the clamping grooves 13 are arranged in rows in the horizontal direction, the clamping grooves 13 are arranged in columns in the vertical direction, a replacement space is reserved between the clamping grooves 13 and the clamping grooves 13 in the vertical direction, and the height of the replacement space is larger than the thickness of the clamping blocks 11.
The surface of the heat exchange tube 3 is provided with heat exchange fins.
Example 1
The utility model provides a flue gas reheat pipe group 2 subassembly in low temperature dust removal thermodynamic system of power plant, includes connecting frame 1 and sets up reheat pipe group 2 in connecting frame 1, reheat pipe group 2 comprises many heat exchange tubes 3, reheat pipe group 2's air inlet side still is provided with rectification abrasionproof nest of tubes 4, rectification abrasionproof nest of tubes 4 comprises many rectification abrasionproof nest of tubes 4, rectification abrasionproof nest of tubes 5 includes interior support steel pipe 6 and outer ceramic tube 14, interior support steel pipe 6 both ends are connected with connecting frame 1, outer ceramic tube 14 cup joints in support steel pipe 6 outside.
An insulating cotton layer 7 is arranged between the outer ceramic tube 14 and the inner support steel tube 6, and the insulating cotton layer 7 is arranged in a gap between the outer ceramic tube 14 and the inner support steel tube 6 at intervals and is annular.
When the anti-abrasion pipe is used, a great amount of solid particles are carried by the flue gas to wash away the rectifying anti-abrasion pipe set 4, and the rectifying anti-abrasion pipe 5 comprises an inner supporting steel pipe 6 and an outer ceramic pipe 14, so that the low heat conductivity and wear resistance of the outer ceramic pipe 14 can be improved, meanwhile, the heat in the flue gas is reserved, the heat exchange with the flue gas is smaller, the heat exchange with the reheating pipe set 2 of a subsequent channel is reserved, and the residual heat recovery effect is improved.
The inner support steel pipe 6 guarantees the support strength, the heat insulation cotton layer 7 guarantees the heat insulation effect, and meanwhile the contact cooperation of the inner support steel and the outer ceramic pipe 14 is buffered.
Example 2
For further optimization of embodiment 1, the outer ceramic tube 14 is provided with a flue gas rectifying groove, and the flue gas rectifying groove is an annular groove or an open groove.
The flue gas rectifying groove comprises an annular chute 8 positioned at the end part of the outer ceramic tube 14 and an annular straight groove 9 positioned in the middle part of the outer ceramic tube 14; the annular chute 8 is formed by communicating two arc-shaped chute 10, and the inclined direction of the annular chute 8 is inclined relative to the middle part of the ceramic tube 14 outside the direction of the wind inlet; the two curved chute 10 are symmetrical with respect to the axis of the outer ceramic tube 14.
The annular chute 8 is connected with the annular straight groove 9 in an area, and the inclination angle of the annular chute 8 is in gradual transition.
The proportion of the distribution length of the annular chute 8 to the distribution length of the whole flue gas rectifying groove is less than 20%.
After the flue gas contacts with the flue gas rectifying groove, the flow direction is regulated under the guidance of the groove body, when the flue gas flushes the outer ceramic tube 14, the flue gas converges towards the middle part of the outer ceramic tube 14 under the guidance of the annular chute 8 at the two ends of the outer ceramic tube 14, and the flue gas is regulated to be stable towards the reheating tube group 2 and flow towards a regular wind direction at the middle part of the outer ceramic tube 14; when soot is deposited by washing one side of the annular straight groove 9 and the annular chute 8 for a long time or when the use is damaged for a long time, the outer ceramic tube 14 can be rotated 180 degrees, so that the original side facing away from the wind direction of the flue gas is contacted with the flue gas to be washed, and the integral use efficiency of the outer ceramic tube 14 can be improved. Symmetry of the two arcuate chute 10 about the axis of the outer ceramic tube 14 maintains the original direction and effect of rectification after 14180 degrees of rotation of the outer ceramic tube.
Example 3
Further optimizing embodiment 2, two ends of the inner support steel pipe 6 are connected with clamping blocks 11, and a buffer spring 12 is arranged between the outer ceramic pipe 14 and the clamping blocks 11.
The two ends of the inner supporting steel pipe 6 are clamped with the connecting frame 1 through clamping blocks 11, clamping grooves 13 matched with the clamping blocks 11 are formed in the connecting frame 1, the clamping grooves 13 are arranged in rows in the horizontal direction, the clamping grooves 13 are arranged in columns in the vertical direction, a replacement space is reserved between the clamping grooves 13 and the clamping grooves 13 in the vertical direction, and the height of the replacement space is larger than the thickness of the clamping blocks 11.
The surface of the heat exchange tube 3 is provided with heat exchange fins.
When in use, the ceramic tube 14 can be exchanged to the outermost part after the outermost part is damaged by using the ceramic tube 14 for a period of time according to the degree of the damage caused by scouring; in exchange, the clamping block 11 needs to be separated from the clamping groove 13 and then adjusted to be matched.
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 (6)
1. The utility model provides a flue gas reheat pipe subassembly among power plant's low temperature dust removal thermodynamic system which characterized in that: the anti-abrasion rectifying pipe comprises a connecting frame and a reheating pipe group arranged in the connecting frame, wherein the reheating pipe group consists of a plurality of heat exchange pipes, a rectifying anti-abrasion pipe group is further arranged on the air inlet side of the reheating pipe group, the rectifying anti-abrasion pipe group consists of a plurality of rectifying anti-abrasion pipes, each rectifying anti-abrasion pipe comprises an inner supporting steel pipe and an outer ceramic pipe, two ends of each inner supporting steel pipe are connected with the connecting frame, and the outer ceramic pipe is sleeved outside each inner supporting steel pipe;
a heat-insulating cotton layer is arranged between the outer ceramic tube and the inner support steel tube, and the heat-insulating cotton layer is arranged in a gap between the outer ceramic tube and the inner support steel tube at intervals and takes a ring shape;
the outer ceramic tube is provided with a smoke rectifying groove which is an annular groove or an open groove;
the flue gas rectifying groove comprises an annular chute positioned at the end part of the outer ceramic tube and an annular straight groove positioned in the middle part of the outer ceramic tube; the annular chute is formed by communicating two arc-shaped chutes, and the inclined direction of the annular chute is inclined relative to the middle part of the ceramic tube outside the air inlet direction; the two arc-shaped inclined grooves are symmetrical relative to the axis of the outer ceramic tube.
2. The flue gas reheat pipe assembly in a low temperature dust removal thermodynamic system of a power plant as set forth in claim 1, wherein: the annular chute is connected with the annular straight groove in an area, and the inclination angle of the annular chute is in gradual transition.
3. The flue gas reheat pipe assembly in a low temperature dust removal thermodynamic system of a power plant as set forth in claim 2, wherein: the proportion of the distribution length of the annular chute to the distribution length of the whole flue gas rectifying groove is less than 20%.
4. A flue gas reheat pipe assembly in a low temperature dust removal thermodynamic system of a power plant as set forth in claim 3, wherein: the two ends of the inner support steel pipe are connected with clamping blocks, and a buffer spring is arranged between the outer ceramic pipe and the clamping blocks.
5. The flue gas reheat pipe assembly in a low temperature dust removal thermodynamic system of a power plant as set forth in claim 4, wherein: the inner support steel pipe is characterized in that two ends of the inner support steel pipe are connected with the connecting frame in a clamping mode through clamping blocks, clamping grooves matched with the clamping blocks are formed in the connecting frame in a row mode in the horizontal direction, the clamping grooves are arranged in a column mode in the vertical direction, replacement spaces are reserved in the vertical direction between the clamping grooves, and the height of the replacement spaces is larger than the thickness of the clamping blocks.
6. The flue gas reheat pipe assembly in a low temperature dust removal thermodynamic system of a power plant as set forth in claim 5, wherein: and heat exchange fins are arranged on the surface of the heat exchange tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711063061.2A CN107664443B (en) | 2017-11-02 | 2017-11-02 | Flue gas reheat pipe assembly in low-temperature dust removal thermodynamic system of power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711063061.2A CN107664443B (en) | 2017-11-02 | 2017-11-02 | Flue gas reheat pipe assembly in low-temperature dust removal thermodynamic system of power plant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107664443A CN107664443A (en) | 2018-02-06 |
| CN107664443B true CN107664443B (en) | 2023-11-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711063061.2A Active CN107664443B (en) | 2017-11-02 | 2017-11-02 | Flue gas reheat pipe assembly in low-temperature dust removal thermodynamic system of power plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107664443B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003227697A (en) * | 2002-02-01 | 2003-08-15 | Masaaki Fukuda | Protecting pipe constituted of ceramic short pipe |
| CN201475977U (en) * | 2009-09-11 | 2010-05-19 | 唐山三友热电有限责任公司 | Low-temperature coal economizer tube bundle |
| CN203115995U (en) * | 2012-12-17 | 2013-08-07 | 中青国能资源科技（北京）股份有限公司 | Heating device for circulating fluidized bed boiler |
| CN103322550A (en) * | 2013-07-10 | 2013-09-25 | 江苏海德节能科技有限公司 | Anti-abrasion device of low temperature coal economizer |
| CN207501752U (en) * | 2017-11-02 | 2018-06-15 | 江阴德耐特重工科技有限公司 | A kind of flue gas reheat tube assembly in power plant's low temperature dedusting therrmodynamic system |
-
2017
- 2017-11-02 CN CN201711063061.2A patent/CN107664443B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003227697A (en) * | 2002-02-01 | 2003-08-15 | Masaaki Fukuda | Protecting pipe constituted of ceramic short pipe |
| CN201475977U (en) * | 2009-09-11 | 2010-05-19 | 唐山三友热电有限责任公司 | Low-temperature coal economizer tube bundle |
| CN203115995U (en) * | 2012-12-17 | 2013-08-07 | 中青国能资源科技（北京）股份有限公司 | Heating device for circulating fluidized bed boiler |
| CN103322550A (en) * | 2013-07-10 | 2013-09-25 | 江苏海德节能科技有限公司 | Anti-abrasion device of low temperature coal economizer |
| CN207501752U (en) * | 2017-11-02 | 2018-06-15 | 江阴德耐特重工科技有限公司 | A kind of flue gas reheat tube assembly in power plant's low temperature dedusting therrmodynamic system |
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| Publication number | Publication date |
|---|---|
| CN107664443A (en) | 2018-02-06 |
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