CN213746715U - Forced circulation fluidized bed hot water boiler - Google Patents
Forced circulation fluidized bed hot water boiler Download PDFInfo
- Publication number
- CN213746715U CN213746715U CN202021178236.1U CN202021178236U CN213746715U CN 213746715 U CN213746715 U CN 213746715U CN 202021178236 U CN202021178236 U CN 202021178236U CN 213746715 U CN213746715 U CN 213746715U
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- Prior art keywords
- boiler
- water
- wall
- cooled
- hearth
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 238000002485 combustion reaction Methods 0.000 claims abstract description 15
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000003546 flue gas Substances 0.000 claims abstract description 8
- 239000012528 membrane Substances 0.000 claims description 27
- 239000000463 material Substances 0.000 claims description 11
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 3
- 210000001503 joint Anatomy 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000005299 abrasion Methods 0.000 claims 1
- 238000009413 insulation Methods 0.000 abstract description 9
- 238000010276 construction Methods 0.000 abstract description 7
- 230000007613 environmental effect Effects 0.000 abstract description 7
- 238000007789 sealing Methods 0.000 abstract description 7
- 238000004134 energy conservation Methods 0.000 abstract description 6
- 239000011449 brick Substances 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 230000009467 reduction Effects 0.000 abstract description 4
- 239000011819 refractory material Substances 0.000 abstract description 4
- 239000003245 coal Substances 0.000 abstract description 2
- 239000000446 fuel Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 206010022000 influenza Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- JTJMJGYZQZDUJJ-UHFFFAOYSA-N phencyclidine Chemical class C1CCCCN1C1(C=2C=CC=CC=2)CCCCC1 JTJMJGYZQZDUJJ-UHFFFAOYSA-N 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- 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
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Landscapes
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
The utility model discloses a forced circulation fluidized bed hot water boiler, which comprises a combustion system, a full-film type water-cooled wall hearth, an upper boiler barrel, a lower boiler barrel, a coal economizer, an air preheater and the like, wherein the upper boiler barrel is communicated with the lower boiler barrel through a convection tube bundle; the fuel is combusted in the hearth through the combustion system, and the generated high-temperature flue gas is discharged out of the boiler body after passing through the convection bank, the economizer and the air preheater for heat exchange. The full-film water-cooled wall hearth, the small water-cooled furnace top and the convection bank area flue adopt water-cooled wall structures, so that the whole boiler can be insulated and sealed by adopting light heat insulation and a small amount of refractory bricks, the hot water boiler can achieve good heat insulation and sealing effects, the thermal efficiency of the boiler is high, the consumption of refractory materials is greatly reduced, the construction is simple, the cost is greatly reduced, and the environment-friendly concept of environmental protection, energy conservation and emission reduction is further conformed; the integral boiler has the remarkable advantages of compact structure, good heat insulation and sealing, simple construction, low cost, high efficiency, environmental protection, energy conservation and the like.
Description
Technical Field
The utility model relates to a boiler equipment technical field specifically is a forced circulation fluidized bed boiler.
Background
Generally, most of hearths, small furnace tops and flues in convection bank areas of the traditional small and medium-sized circulating fluidized bed boilers comprise heavy furnace wall heat preservation structures consisting of refractory bricks and red bricks. The furnace wall structure has poor sealing effect, easy air leakage, large heat dissipation loss and low heat efficiency of the boiler. Because of the adoption of the heavy furnace wall, the consumption of the refractory and heat-insulating materials of the boiler is large, the refractory and masonry cost of the furnace wall is large during installation, and the load of the foundation of the boiler is large. Most of the cyclones are built by wear-resistant refractory materials, the manufacturing is labor-consuming and time-consuming, the consumption of heat-insulating materials is high, and the building cost is high.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a sealed effectual, the construction is simple, and fire-resistant insulation material consumes fewly, and is with low costs, agrees with the forced circulation fluidized bed boiler of environmental protection, energy saving and emission reduction theory to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: a forced circulation fluidized bed hot water boiler comprises a combustion system, a full-film type water-cooled wall hearth, a boiler main body and an air preheater, wherein the combustion system is butted at the lower end of the full-film type water-cooled wall hearth; a material returning system is arranged between the full-film type water-cooled wall hearth and the boiler main body, and the material returning system is in butt joint with the combustion system; a cyclone is arranged between the upper end of the full-film type water-cooled wall hearth and the boiler main body, a water-cooled small furnace top is arranged above the cyclone, and the water-cooled small furnace top is arranged on one side of the top of the boiler main body; the boiler main body is also provided with an upper boiler barrel and a lower boiler barrel which are connected through a convection bank, and a flue in a convection bank area is also arranged between the convection banks; the lower end of the flue of the convection bank area is connected with a tail flue in the boiler body, and an economizer is installed in the tail flue.
Preferably, the full-film type water-cooled wall hearth is a peripheral full-sealed hearth consisting of a front wall film type wall, a rear wall film type wall, a left side film type wall, a middle film type wall and a right side film type wall.
Preferably, the cyclone cylinder is a component rolled by an alloy steel plate with wear resistance and high temperature resistance.
Preferably, the water-cooled small furnace top is a member made of a membrane water-cooled wall and a light external heat-preservation and wear-resistant refractory castable.
Preferably, the convection bank area flue is a flue gas channel with a completely sealed periphery formed by four membrane water walls, namely a front membrane water wall, a rear membrane water wall, a left membrane water wall and a right membrane water wall.
Compared with the prior art, the beneficial effects of the utility model are as follows:
according to the forced circulation fluidized bed hot water boiler, the full-film water-cooled wall hearth, the water-cooled small furnace top and the convection bank area flue adopt water-cooled wall structures, so that the whole boiler can be insulated and sealed by adopting light heat insulation and a small amount of refractory bricks, the hot water boiler can achieve good heat insulation and sealing effects, the thermal efficiency of the boiler is high, the consumption of refractory materials is greatly reduced, the construction is simple, the cost is greatly reduced, and the environment-friendly concept of environmental protection, energy conservation and emission reduction is further conformed; the integral boiler has the remarkable advantages of compact structure, good heat insulation and sealing, simple construction, low cost, high efficiency, environmental protection, energy conservation and the like.
Drawings
Fig. 1 is a front view structural section view of the present invention.
Fig. 2 is a left side view structural section of the present invention.
In the figure: 1. a combustion system; 2. a full-film type water-cooled wall hearth; 3. a cyclone; 4. water-cooling the small furnace top; 5. putting the boiler barrel on the boiler; 6. discharging the boiler barrel; 7. a membrane wall; 8. a convection bank; 9. a coal economizer; 10. an air preheater; 11. a front wall membrane wall; 12. a back wall membrane wall; 13. a left membrane wall; 14. a middle membrane wall; 15. a right membrane wall; 16. a convection bank zone flue; 17. a boiler main body; 18. a material returning system; 19. and a tail flue.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-2, a forced circulation fluidized bed hot water boiler includes a combustion system 1, a full-film type waterwall furnace 2, a boiler main body 17 and an air preheater 10, wherein the combustion system 1 is butted with the lower end of the full-film type waterwall furnace 2, the full-film type waterwall furnace 2 is arranged at one side of the boiler main body 17, and the bottom of the boiler main body 17 is provided with the air preheater 10; a material returning system 18 is arranged between the full-film type water-cooled wall hearth 2 and the boiler main body 17, and the material returning system 18 is in butt joint with the combustion system 1; a cyclone 3 is arranged between the upper end of the full-film type water-cooled wall hearth 2 and the boiler main body 17, a water-cooled small furnace top 4 is arranged above the cyclone 3, and the water-cooled small furnace top 4 is arranged on one side of the top of the boiler main body 17; an upper boiler barrel 5 and a lower boiler barrel 6 are further arranged on the boiler main body 17, the upper boiler barrel 5 and the lower boiler barrel 6 are connected through a convection bank 8, and a convection bank area flue 16 is further arranged between the convection banks 8; the lower end of the flue 16 in the convection bank area is connected with a tail flue 19 in the boiler main body 17, and an economizer 9 is arranged in the tail flue 19.
In the above embodiment, the full-film type waterwall furnace 2 is a fully-sealed furnace with all sides composed of a front-wall film type wall 11, a rear-wall film type wall 12, a left-side film type wall 13, a middle-film type wall 14 and a right-side film type wall 15.
In the above embodiment, the cyclone 3 is a member made of a rolled wear-resistant and high-temperature-resistant alloy steel plate.
In the above embodiment, the water-cooled small furnace roof 4 is a member made of a membrane water-cooled wall 7 and a lightweight outer insulating and wear-resistant refractory castable material.
In the above embodiment, the flue 16 in the convection bank area is a flue gas channel with a fully sealed periphery formed by four membrane water walls 7, namely, a front membrane water wall 7, a rear membrane water wall 7, a left membrane water wall 7 and a right membrane water wall 7.
The working principle is as follows: in the forced circulation fluidized bed hot water boiler, fuel is fluidized and combusted in a dense-phase region at the lower part of a full-film type water-cooled wall hearth 2 through a combustion system 1, high-temperature flue gas generated by combustion is separated by a double-vortex separation structure in a cyclone 3 at the upper part of the hearth along with unburnt materials, the high-temperature flue gas flows into a flue 16 of a convection tube bundle region at the rear part, and the unburnt materials are returned to the hearth through a separate material return system 18 for circulating combustion; the high-temperature flue gas flushes the convection bank 8 in the flue 16 of the convection bank area for heat exchange, then enters the tail flue 19 of the boiler main body 17 downwards, exchanges heat with the economizer 9 and the air preheater 10, and then enters the environment-friendly equipment such as desulfurization and dust removal at the tail of the boiler through a flue gas outlet.
In summary, the following steps: according to the forced circulation fluidized bed hot water boiler, the full-film water-cooled wall hearth 2, the water-cooled small furnace top 4 and the convection bank area flue 16 are all of water-cooled wall structures, so that the whole boiler can be insulated and sealed by adopting light heat insulation and a small amount of refractory bricks, the hot water boiler can achieve good heat insulation and sealing effects, the thermal efficiency of the boiler is high, the consumption of refractory materials is greatly reduced, the construction is simple, the cost is greatly reduced, and the environment-friendly concept of environmental protection, energy conservation and emission reduction is further conformed; the integral boiler has the remarkable advantages of compact structure, good heat insulation and sealing, simple construction, low cost, high efficiency, environmental protection, energy conservation and the like.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a forced circulation fluidized bed boiler, includes combustion system (1), full membrane formula waterwall furnace (2), boiler main part (17) and air heater (10), its characterized in that: the combustion system (1) is butted at the lower end of the full-film type water-cooled wall hearth (2), the full-film type water-cooled wall hearth (2) is arranged on one side of the boiler main body (17), and the bottom of the boiler main body (17) is provided with an air preheater (10); a material returning system (18) is arranged between the full-film type water-cooled wall hearth (2) and the boiler main body (17), and the material returning system (18) is in butt joint with the combustion system (1); a cyclone (3) is arranged between the upper end of the full-film type water-cooled wall hearth (2) and the boiler main body (17), a water-cooled small furnace top (4) is arranged above the cyclone (3), and the water-cooled small furnace top (4) is arranged on one side of the top of the boiler main body (17); the boiler main body (17) is also provided with an upper boiler barrel (5) and a lower boiler barrel (6), the upper boiler barrel (5) and the lower boiler barrel (6) are connected through a convection bank (8), and a convection bank area flue (16) is also arranged between the arranged convection banks (8); the lower end of the flue (16) in the convection bank area is connected with a tail flue (19) in the boiler main body (17), and an economizer (9) is arranged in the tail flue (19).
2. A forced circulation fluidized bed hot water boiler according to claim 1, wherein: the all-membrane water-cooled wall hearth (2) is a peripheral all-sealed hearth consisting of a front wall membrane wall (11), a rear wall membrane wall (12), a left side membrane wall (13), a middle membrane wall (14) and a right side membrane wall (15).
3. A forced circulation fluidized bed hot water boiler according to claim 1, wherein: the cyclone cylinder (3) is a component rolled by an abrasion-resistant and high-temperature-resistant alloy steel plate.
4. A forced circulation fluidized bed hot water boiler according to claim 1, wherein: the small water-cooled furnace roof (4) is a component made of a membrane water-cooled wall (7) and a light external heat-preservation and wear-resistant refractory castable.
5. A forced circulation fluidized bed hot water boiler according to claim 1, wherein: the convection bank area flue (16) is a flue gas channel which is totally sealed at the periphery and consists of four membrane water walls (7) of the front, the rear, the left and the right.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021178236.1U CN213746715U (en) | 2020-06-23 | 2020-06-23 | Forced circulation fluidized bed hot water boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021178236.1U CN213746715U (en) | 2020-06-23 | 2020-06-23 | Forced circulation fluidized bed hot water boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213746715U true CN213746715U (en) | 2021-07-20 |
Family
ID=76815298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021178236.1U Expired - Fee Related CN213746715U (en) | 2020-06-23 | 2020-06-23 | Forced circulation fluidized bed hot water boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213746715U (en) |
-
2020
- 2020-06-23 CN CN202021178236.1U patent/CN213746715U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210720 |