CN106524791A - Three-dimensional variable-space variable-structure flue gas reheater - Google Patents
Three-dimensional variable-space variable-structure flue gas reheater Download PDFInfo
- Publication number
- CN106524791A CN106524791A CN201611195959.0A CN201611195959A CN106524791A CN 106524791 A CN106524791 A CN 106524791A CN 201611195959 A CN201611195959 A CN 201611195959A CN 106524791 A CN106524791 A CN 106524791A
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- CN
- China
- Prior art keywords
- heat exchange
- flue gas
- dimensional
- reheater
- temperature heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- F28D7/08—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 otherwise bent, e.g. in a serpentine or zig-zag
- F28D7/082—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 otherwise bent, e.g. in a serpentine or zig-zag with serpentine or zig-zag configuration
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/02—Tubular elements of cross-section which is non-circular
Abstract
The invention discloses a three-dimensional variable-space variable-structure flue gas reheater. The three-dimensional variable-space variable-structure flue gas reheater comprises a flue gas channel composed of an inlet flue, a sealing plate and an outlet flue. The flue gas channel is provided with low-temperature heat exchange tubes and high-temperature heat exchange tubes in sequence in the flowing direction of flue gas, and the low-temperature heat exchange tubes are three-dimensional deformation HP tubes which are formed by spirally twisting elliptical tubes. The three-dimensional deformation HP tubes are adopted, the tube pass section is changed from round to flat, an abrasion point at a 60-degree angle is destroyed, the tube pass sectional area can be reduced by 40%-60% compared with that of a round plain tube, a stable flowing space of the shell pass outside the tubes is obtained, and the fluid resistance is reduced; the interior of each HP tube is of a special spiral structure, so that secondary flow of fluid is generated perpendicular to a main flow direction, the thermal boundary layer is destroyed, and the heat exchange efficiency is improved by 20%-40%; and the HP tubes are arranged in a special staggered arrangement mode, self-supporting is formed among tube bundles, the structure is quite compact, and the size of the flue gas reheater is 40%-50% smaller than that of a conventional reheater.
Description
Technical field
The present invention relates to smoke re-heater technical field, more particularly to a kind of three-dimensional emptying anaplasia fume reheater.
Background technology
In China, it is the diffusivity for improving pollutant in chimney breast flue gas, the visibility for reducing plume, environmental administration
Smoke re-heater is installed after generally may require that flue gas desulfurization, desulfuration absorbing tower exiting flue gas are heated to into 80 DEG C or so, to carry
High atmosphere hoist height, mitigates atmospheric pollution.As kept higher flue-gas temperature in chimney, effectively not only can reduce in air
The formation probability of haze pollution, can also mitigate cold end corrosion phenomenon of the flue gas to metalwork in chimney.
Smoke re-heater can be divided into low-temperature zone and high temperature section along the flow direction of flue gas, in low-temperature zone, using high-temperature water pair
Flue gas is realized being rapidly heated, and effectively mitigates corrosion of the wet flue gas to rear class heat exchanger, lifts the machine life of reheater.Tradition
Smoke re-heater low-temperature zone heat exchanger tube use light pipe, and light pipe smoke re-heater is present that easy to wear, flow resistance is big, change
The low shortcoming of the thermal efficiency, limits the application of smoke re-heater.
The content of the invention
It is an object of the invention to provide a kind of three-dimensional emptying anaplasia fume reheater, is replaced by 3 D deformation HP pipes
For traditional light pipe, efficient smoke re-heater, low-resistance, energy-conservation, compact, anti-wear, the globality of lifting smoke re-heater is realized
Energy.
The present invention is achieved through the following technical solutions：
A kind of three-dimensional emptying anaplasia fume reheater, including the cigarette being made up of inlet flue duct, shrouding and exhaust pass
Gas passage, the exhaust gases passes are disposed with low-temperature heat exchange pipe and high-temperature heat exchange tube, the low temperature along the flow direction of flue gas
Heat exchanger tube is managed for 3 D deformation HP, and 3 D deformation HP pipes are to be formed by elliptical tube Jing is helically twisted, and its upstream end is provided with heating agent
Water inlet, downstream are provided with heating agent water out, and the heating agent water out is connected with the entrance of high-temperature heat exchange tube.
Further, the 3 D deformation HP pipes are many, and many 3 D deformation HP pipes are at maximum reducing salient point
Contact with each other, and tie up to form self-supporting tube bank by steel band.
Further, the 3 D deformation HP pipes are made using stainless steel material.
Further, valve is equipped with the inlet flue duct and exhaust pass.
Further, the high-temperature heat exchange tube is H type fin heat exchange pipes.
Further, the insulation material of the three-dimensional emptying anaplasia fume reheater outer surface adopts alumina silicate fibre
Felt, the outer layer stupefied outer casing of aluminum micromicrowatt, anti-corrosion material adopt glass flake.
It is an advantage of the invention that：
1. 3 D deformation HP is managed, and tube side section is flat by change is justified, and destroys 60 degree of wear point, under same external diameter, than circle
Shape light pipe tube side sectional area can reduce 40～60% so that shell space becomes big, and pipe shell journey obtains the space of smoothly flowing,
Reduce fluid resistance；
2. 3 D deformation HP pipes, are special helical structure in pipe so that fluid is producing two perpendicular to main flow direction
Secondary stream, destroys thermal boundary layer, enhances the heat exchange of cold fluid and hot fluid, improving heat exchanging efficiency 20%～40%；
3. 3 D deformation HP pipes, using being staggered in arrangement cloth form of tubes, form self-supporting between tube bank, structure closely,
Its volume is than the conventional little 40-50% of reheater.
Description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is 3 D deformation HP tubular construction schematic diagrams；
Fig. 3 is to form self-supporting between 3 D deformation HP pipes and be staggered in arrangement schematic diagram；
Fig. 4 is the abrasion schematic diagram in pipe flow field；
Fig. 5 is the abrasion schematic diagram of 3 D deformation HP pipe flow field；
Reference implication in figure：1st, heating agent water out, 2, heating agent water inlet, 3, valve, 4, inlet flue duct, 5, low temperature changes
Heat pipe, 6, shrouding, 7, high-temperature heat exchange tube, 8, exhaust pass, 9,60 degree of wear point, 10, vortex.
Specific embodiment
Embodiment
Refering to Fig. 1 to Fig. 3, a kind of three-dimensional emptying anaplasia fume reheater, including by inlet flue duct 4, shrouding 6 and going out
The exhaust gases passes that mouth flue 8 is constituted, the exhaust gases passes are disposed with low-temperature heat exchange pipe 5 and high temperature along the flow direction of flue gas
Heat exchanger tube 7, the low-temperature heat exchange pipe 5 are managed for 3 D deformation HP, and 3 D deformation HP pipes are to be formed by elliptical tube Jing is helically twisted,
Its upstream end is provided with heating agent water inlet 2, and downstream is provided with heating agent water out 1, the heating agent water out 1 and high-temperature heat exchange tube 7
Entrance is connected.
Wherein, the 3 D deformation HP pipes are many, and many 3 D deformation HP pipes are mutual at maximum reducing salient point
Contact, and tie up to form self-supporting tube bank by steel band.The 3 D deformation HP pipes are made using stainless steel material.The import
Valve 3 is equipped with flue 4 and exhaust pass 8.The high-temperature heat exchange tube 7 is H type fin heat exchange pipes.The three-dimensional emptying anaplasia
The insulation material of fume reheater outer surface adopts alumina silicate fiber felt, the outer layer stupefied outer casing of aluminum micromicrowatt, anti-corrosion material
Using glass flake.
When using three-dimensional emptying anaplasia fume reheater, flue gas flows into described from described inlet flue duct 4
Smoke re-heater, described 3 D deformation HP pipes pipe is outer and pipe in high-temperature water carry out heat exchange, temperature raises rapidly 2～
3 DEG C, the corrosivity of flue gas are reduced, protect back segment heating surface；High-temperature heat exchange tube 7 is subsequently entered, 80 DEG C or so are heated to, from institute
The exhaust pass 8 stated is discharged.
Described 3 D deformation HP pipes adopt rustless steel, are inside connected with high temperature demineralized water, and high temperature demineralized water is from heating agent water inlet 2
Enter in 3 D deformation HP pipes, flow out from heating agent water out 1.Because being helical form in pipe, therefore fluid will produce swirl flow, break
Bad thermal boundary layer, enhances heat exchange, can improve heat transfer coefficient 20%～40%.3 D deformation HP pipes arrangement is stagger arrangement cloth
Put, compact conformation, 40%～50% is reduced than routine reheater volume, can effectively intercept the last Gypsum Fibrosum escaped in wet flue gas
Serosity and droplet, it is to avoid gypsum slurries produce accumulation on rear class heat exchanger tube, are conducive to flue gas heat exchange temperature rise effect steady in a long-term.
It is the abrasion schematic diagram in pipe flow field shown in Fig. 4, is the abrasion schematic diagram of 3 D deformation HP pipe flow field shown in Fig. 5.
Occur in where 60 ° where pipe abrasion maximum as can be seen from Fig., the place is worn out at first；And 180 ° of position
(namely pipe is along the back side of flow direction) has vortex 10, and fluid velocity declines, in the easy dust stratification in the place.Conversely, three-dimensional become
Due to the change of shape, tube side section becomes flat by justifying to shape HP pipe so that avoid or alleviate abrasion in 60 ° of places, and
Without being vortexed at 180 °, fouling phenomenon is not likely to produce.
Above-listed detailed description in detail is illustrating for possible embodiments of the present invention, and the embodiment simultaneously is not used to limit this
Bright the scope of the claims, all equivalence enforcements or change without departing from carried out by the present invention, is intended to be limited solely by the scope of the claims of this case.
Claims (6)
1. a kind of three-dimensional emptying anaplasia fume reheater, including by inlet flue duct (4), shrouding (6) and exhaust pass (8) structure
Into exhaust gases passes, the exhaust gases passes are disposed with low-temperature heat exchange pipe (5) and high-temperature heat exchange tube along the flow direction of flue gas
(7), it is characterised in that：Described low-temperature heat exchange pipe (5) are managed for 3 D deformation HP, and 3 D deformation HP pipes are by elliptical tube Jing spirals
Distortion is formed, and its upstream end is provided with heating agent water inlet (2), and downstream is provided with heating agent water out (1), heating agent water out (1)
Connect with the entrance of high-temperature heat exchange tube (7).
2. three-dimensional emptying anaplasia fume reheater according to claim 1, it is characterised in that：The 3 D deformation HP
Manage as many, many 3 D deformation HP pipes contact with each other at maximum reducing salient point, and tied up by steel band to be formed from
Stay tube beam.
3. three-dimensional emptying anaplasia fume reheater according to claim 1 and 2, it is characterised in that：The three-dimensional change
Shape HP pipe is made using stainless steel material.
4. three-dimensional emptying anaplasia fume reheater according to claim 1, it is characterised in that：The inlet flue duct
(4) and on exhaust pass (8), it is equipped with valve (3).
5. three-dimensional emptying anaplasia fume reheater according to claim 1, it is characterised in that：The high-temperature heat exchange tube
(7) it is H type fin heat exchange pipes.
6. three-dimensional emptying anaplasia fume reheater according to claim 1, it is characterised in that：The three-dimensional change space
The insulation material of structure changes smoke re-heater outer surface adopts alumina silicate fiber felt, the outer layer stupefied outer casing of aluminum micromicrowatt, preserving timber
Material adopts glass flake.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611195959.0A CN106524791A (en) | 2016-12-22 | 2016-12-22 | Three-dimensional variable-space variable-structure flue gas reheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611195959.0A CN106524791A (en) | 2016-12-22 | 2016-12-22 | Three-dimensional variable-space variable-structure flue gas reheater |
Publications (1)
| Publication Number | Publication Date |
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| CN106524791A true CN106524791A (en) | 2017-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611195959.0A Pending CN106524791A (en) | 2016-12-22 | 2016-12-22 | Three-dimensional variable-space variable-structure flue gas reheater |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107830752A (en) * | 2017-10-23 | 2018-03-23 | 中国科学院广州能源研究所 | A kind of high-efficiency waste heat recovery device |
| CN107966048A (en) * | 2017-11-09 | 2018-04-27 | 北京航天试验技术研究所 | A kind of cooler |
| CN108253443A (en) * | 2018-03-06 | 2018-07-06 | 中国科学院广州能源研究所 | A kind of coal-fired plant flue gas water recycling and complementary energy synthesis utilize system |
| CN108361988A (en) * | 2018-03-27 | 2018-08-03 | 中国科学院广州能源研究所 | A kind of high efficiency boiler energy-saving control system and control method |
| CN109813143A (en) * | 2019-02-21 | 2019-05-28 | 华中科技大学 | A kind of heat exchanger utilized for fume afterheat |
| CN110173712A (en) * | 2019-06-26 | 2019-08-27 | 国电龙源节能技术有限公司 | Air-water heat exchanger with perpendicular fins |
Citations (6)
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|---|---|---|---|---|
| CN204678352U (en) * | 2015-04-07 | 2015-09-30 | 镇江新宇固体废物处置有限公司 | Smoke-heating device |
| CN105042612A (en) * | 2015-08-24 | 2015-11-11 | 西安交通大学 | Smoke heater with wet smoke composite type low-temperature corrosion resistant function |
| CN105403091A (en) * | 2015-12-23 | 2016-03-16 | 哈尔滨锅炉厂有限责任公司 | H-shaped fin heating surface applied to low-temperature reheater and heat exchange method of H-shaped fin heating surface |
| CN205227367U (en) * | 2015-12-27 | 2016-05-11 | 杭州天润新能源技术有限公司 | Low temperature section pipe anti -corrosion flue gas re -heater |
| CN205784781U (en) * | 2016-05-25 | 2016-12-07 | 上海发电设备成套设计研究院 | A kind of heat exchange element is the enclosed steam air heater of twisted elliptic tube |
| CN206430603U (en) * | 2016-12-22 | 2017-08-22 | 中国科学院广州能源研究所 | Three-dimensional emptying anaplasia fume reheater |
-
2016
- 2016-12-22 CN CN201611195959.0A patent/CN106524791A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204678352U (en) * | 2015-04-07 | 2015-09-30 | 镇江新宇固体废物处置有限公司 | Smoke-heating device |
| CN105042612A (en) * | 2015-08-24 | 2015-11-11 | 西安交通大学 | Smoke heater with wet smoke composite type low-temperature corrosion resistant function |
| CN105403091A (en) * | 2015-12-23 | 2016-03-16 | 哈尔滨锅炉厂有限责任公司 | H-shaped fin heating surface applied to low-temperature reheater and heat exchange method of H-shaped fin heating surface |
| CN205227367U (en) * | 2015-12-27 | 2016-05-11 | 杭州天润新能源技术有限公司 | Low temperature section pipe anti -corrosion flue gas re -heater |
| CN205784781U (en) * | 2016-05-25 | 2016-12-07 | 上海发电设备成套设计研究院 | A kind of heat exchange element is the enclosed steam air heater of twisted elliptic tube |
| CN206430603U (en) * | 2016-12-22 | 2017-08-22 | 中国科学院广州能源研究所 | Three-dimensional emptying anaplasia fume reheater |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107830752A (en) * | 2017-10-23 | 2018-03-23 | 中国科学院广州能源研究所 | A kind of high-efficiency waste heat recovery device |
| CN107966048A (en) * | 2017-11-09 | 2018-04-27 | 北京航天试验技术研究所 | A kind of cooler |
| CN108253443A (en) * | 2018-03-06 | 2018-07-06 | 中国科学院广州能源研究所 | A kind of coal-fired plant flue gas water recycling and complementary energy synthesis utilize system |
| CN108361988A (en) * | 2018-03-27 | 2018-08-03 | 中国科学院广州能源研究所 | A kind of high efficiency boiler energy-saving control system and control method |
| CN109813143A (en) * | 2019-02-21 | 2019-05-28 | 华中科技大学 | A kind of heat exchanger utilized for fume afterheat |
| CN110173712A (en) * | 2019-06-26 | 2019-08-27 | 国电龙源节能技术有限公司 | Air-water heat exchanger with perpendicular fins |
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Application publication date: 20170322 |
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