CN109099419B - Circulating fluidized bed boiler - Google Patents
Circulating fluidized bed boiler Download PDFInfo
- Publication number
- CN109099419B CN109099419B CN201810786254.9A CN201810786254A CN109099419B CN 109099419 B CN109099419 B CN 109099419B CN 201810786254 A CN201810786254 A CN 201810786254A CN 109099419 B CN109099419 B CN 109099419B
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- Prior art keywords
- filter screen
- heat
- fan
- boiler
- pipe
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C10/00—Fluidised bed combustion apparatus
- F23C10/18—Details; Accessories
-
- 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
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
The invention discloses a circulating fluidized bed boiler which comprises a shell, a second filter screen and a fixed pipe, wherein a fan is arranged at the lower end in the shell, one end of the fan is connected with a wind conveying pipe, a first filter screen is arranged at the top of the wind conveying pipe, a hearth is arranged at the top of the first filter screen, a coal port is arranged on one side of the shell, the second filter screen is arranged at the bottom of a boiler body, connecting grooves are fixed at two ends of the second filter screen, the fixed pipe is arranged on one side of the second filter screen, heat insulation layers are arranged on two sides of the first filter screen, a heat absorption layer is wrapped on the surface of each heat insulation layer, a second plate type heat exchanger is arranged at one end of the conveying pipe, and a fan is embedded in the surface. This circulating fluidized bed boiler possesses the less burning coal particle of not being burnt completely of recovery, and this boiler is provided with the fan, is favorable to reducing the temperature of first plate heat exchanger, second plate heat exchanger and fan, prolongs the life of equipment.
Description
Technical Field
The invention relates to the technical field of boilers, in particular to a circulating fluidized bed boiler.
Background
The fluidized bed boiler carries coal into fluid through the fluid to burn, and has some characteristics of the fluid, but the coal burning of the fluidized bed boiler has certain conditions, particles can not be larger than 1 cm, and the fluidized bed boiler has high cleanliness.
However, the existing fluidized bed boiler has low recovery rate of heat energy, and has poor recovery rate of residual fine combustion coal after combustion, which causes cost waste. In order to solve the problems, innovative design is urgently needed on the basis of the original fluidized bed boiler.
Disclosure of Invention
The invention aims to provide a circulating fluidized bed boiler to solve the problems of low heat energy recovery rate, poor recovery of residual fine combustion coal after combustion and cost waste in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a circulating fluidized bed boiler, includes shell, second filter screen and fixed pipe, the inside lower extreme of shell is provided with the fan, and the one end of fan is connected with defeated tuber pipe, first filter screen is installed at the top of defeated tuber pipe, and the top of first filter screen is provided with furnace one side of shell is provided with the coal mouth to the top of shell is fixed with a pot body, the second filter screen is installed in the bottom of pot body, and the both ends of second filter screen all are fixed with the spread groove, and the bottom of second filter screen is provided with first plate heat exchanger, fixed pipe installs the one side at the second filter screen, the both sides of first filter screen all are provided with the insulating layer, and the surface coating of insulating layer has the heat-absorbing shell to the surface connection on heat-absorbing shell has the transport pipe, second plate heat exchanger is installed to the one end of transport pipe, the surface embedding.
Preferably, the spread groove is provided with 4, and first filter screen and second filter screen are respectively for the card with the spread groove and be connected to the aperture of first filter screen and second filter screen is 0.1 mm.
Preferably, the fixed pipe is arranged in an inclined manner, and the height of the fixed pipe is higher than that of the first filter screen.
Preferably, the heat absorbing layer is filled with a cooling liquid, and the heat absorbing layer is arranged for a cooling cycle.
Preferably, the heat insulating layer is of an inner vacuum structure, and the outer contour of the heat insulating layer is attached to the inner contour of the heat absorbing layer.
Preferably, the conveying pipe and the heat absorption layer are of an integrated structure, and one end of the conveying pipe is fixedly connected with the second plate heat exchanger.
Compared with the prior art, the invention has the beneficial effects that: the circulating fluidized bed boiler has the advantages that small burning coal particles which are not completely burnt are recycled, the use cost of burning coal is reduced, the boiler is provided with the fan, the temperature of the first plate type heat exchanger, the temperature of the second plate type heat exchanger and the temperature of the fan are favorably reduced, the service life of equipment is prolonged, the boiler is further provided with a heat insulation layer and a heat absorption layer, heat in a hearth is isolated and absorbed by partial heat, and waste heat is utilized in an all-around manner;
1. the vacuum structure is favorable for preventing heat loss through the heat insulation layer with the inner vacuum, the heat in the hearth is protected and prevented from loss, if part of heat is lost through the vacuum due to overhigh temperature of the hearth, the cooling liquid in the heat absorption layer absorbs the heat energy, and the part of heat energy is reused through the second plate heat exchanger, so that the waste heat utilization of the boiler is enhanced, the use cost is reduced, and the use benefit is enhanced;
2. through the second filter screen and the fixed pipe, the incompletely combusted combustion coal particles can be recycled and combusted, so that the use cost is reduced;
3. through the rotation of fan, will dispel the heat to first plate heat exchanger, second plate heat exchanger and fan for the life of first plate heat exchanger, second plate heat exchanger and fan obtains the extension.
Drawings
FIG. 1 is a schematic cross-sectional view of the present invention;
FIG. 2 is a schematic front view of the present invention;
FIG. 3 is a schematic view of a heat sink layer according to the present invention;
FIG. 4 is a schematic view of the structure of FIG. 1 at A according to the present invention;
FIG. 5 is a schematic structural view of a first plate heat exchanger according to the present invention;
fig. 6 is a schematic structural view of a second plate heat exchanger according to the present invention.
In the figure: 1. a housing; 2. a fan; 3. a wind delivery pipe; 4. a first filter screen; 5. a coal port; 6. a hearth; 7. a pan body; 8. a second filter screen; 9. connecting grooves; 10. a first plate heat exchanger; 11. a fixed tube; 12. a heat absorbing layer; 13. a thermal insulation layer; 14. a transport pipe; 15. a second plate heat exchanger; 16. a fan.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-6, the present invention provides a technical solution: a circulating fluidized bed boiler comprises a shell 1, a fan 2, an air conveying pipe 3, a first filter screen 4, a coal port 5, a hearth 6, a boiler body 7, a second filter screen 8, a connecting groove 9, a first plate type heat exchanger 10, a fixed pipe 11, a heat absorption layer 12, a heat insulation layer 13, a conveying pipe 14, a second plate type heat exchanger 15 and a fan 16, wherein the fan 2 is arranged at the lower end inside the shell 1, one end of the fan 2 is connected with the air conveying pipe 3, the first filter screen 4 is installed at the top of the air conveying pipe 3, the coal port 5 is arranged at one side of the shell 1 of the hearth 6 at the top of the first filter screen 4, the boiler body 7 is fixed at the top of the shell 1, the second filter screen 8 is installed at the bottom of the boiler body 7, the connecting grooves 9 are fixed at both ends of the second filter screen 8, the first plate type heat exchanger 10 is arranged at the bottom of the second filter screen 8, the, both sides of the first filter screen 4 are provided with heat insulation layers 13, the surfaces of the heat insulation layers 13 are wrapped with heat absorption layers 12, the surfaces of the heat absorption layers 12 are connected with conveying pipes 14, one ends of the conveying pipes 14 are provided with second plate heat exchangers 15, and the surfaces of the shells 1 are embedded with fans 16;
4 connecting grooves 9 are arranged, the first filter screen 4 and the second filter screen 8 are respectively connected with the connecting grooves 9 in a clamping manner, the aperture of each of the first filter screen 4 and the second filter screen 8 is 0.1mm, the first filter screen 4 and the second filter screen 8 are very stably installed due to the 4 connecting grooves 9, and fine combustion coal cannot leak and fall due to the first filter screen 4 and the second filter screen 8 with the aperture of 0.1 mm;
the fixing pipe 11 is obliquely arranged, the height of the fixing pipe 11 is higher than that of the first filter screen 4, the obliquely arranged fixing pipe 11 is beneficial to combustion coal which is not completely combusted and can fall into the hearth 6 through the fixing pipe 11 to be combusted again, the height of the fixing pipe 11 is higher than that of the combustion coal, the combustion coal can directly fall onto the surface of the first filter screen 4 to be fixed, and the combustion coal can be conveniently combusted in the hearth 6;
the inside of the heat absorption layer 12 is filled with cooling liquid, the heat absorption layer 12 is arranged in a cooling circulation mode, the cooling liquid can absorb waste heat, and the cooling circulation device is convenient for recycling the waste heat, so that the waste heat utilization rate of the boiler is increased;
the heat insulation layer 13 is of an inner vacuum structure, the outer contour of the heat insulation layer 13 is attached to the inner contour of the heat absorption layer 12, the vacuum structure is favorable for preventing heat dissipation, and the outer contour of the heat insulation layer 13 is attached to the inner contour of the heat absorption layer 12, so that partial heat can be absorbed by the heat absorption layer after the partial heat still passes through the heat insulation layer;
transport pipe 14 and heat-absorbing layer 12 are integrated structure, and the one end of transport pipe 14 and second plate heat exchanger 15 are fixed connection, and integrated structure is favorable to the circulation of coolant liquid, and fixed connection has guaranteed that the coolant liquid can not the seepage.
The working principle is as follows: when the circulating fluidized bed boiler is used, firstly, burning coal is added through a coal port 5 through a graph 1-3, the aperture of a first filter screen 4 is 0.1mm, the burning coal cannot fall off, a fan 2 sucks cold air, the air is transmitted into a hearth 6 through an air transmission pipe 3, the burning coal is burnt to generate heat, the burning coal is fluidized through the air due to the small radius of the burning coal, the heat is transmitted to a boiler body 7 after burning, the boiler body 7 is heated by the heat, then fluidized hot air passes through a second filter screen 8, the burning coal which is not completely burnt is blocked by the second filter screen 8 and returns to the position above the first filter screen 4 through a fixed pipe 11 to be fluidized and burnt again, a fan 16 is arranged on the surface of the boiler, the first plate heat exchanger 10, the second plate heat exchanger 14 and the fan 2 are conveniently cooled, and the service life of each device is prolonged;
through the graph 4, the second filter screen 8 and the connecting groove 9 are fixed in a clamping and connecting mode, and the clamping and connecting mode ensures the stability of the second filter screen 8, so that the second filter screen 8 cannot fall off by hot air transmitted by the fan 2;
through the graphs of fig. 5-6, the first plate heat exchanger 10 converts the boiler body 7 by using the residual heat, the heat energy of the residual heat is converted and then discharged to the air delivery pipe 3, so that the subsequent furnace 6 can be heated conveniently, cold air after the heat energy conversion is discharged out of the boiler through the first plate heat exchanger 10, the second plate heat exchanger 10 converts the cooling liquid with the heat energy into new cooling liquid, and the heat energy is transmitted to the air delivery pipe 3, so that the heating and the combustion in the furnace are facilitated.
The boiler comprises a shell 1, a fan 2, an air conveying pipe 3, a first filter screen 4, a coal port 5, a hearth 6, a boiler body 7, a second filter screen 8, a connecting groove 9, a first plate type heat exchanger 10, a fixed pipe 11, a heat absorption layer 12, a heat insulation layer 13, a conveying pipe 14, a second plate type heat exchanger 15 and a fan 16.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (2)
1. A circulating fluidized bed boiler, includes shell (1), second filter screen (8) and fixed pipe (11), its characterized in that: the boiler is characterized in that a fan (2) is arranged at the lower end inside the shell (1), one end of the fan (2) is connected with an air delivery pipe (3), a first filter screen (4) is installed at the top of the air delivery pipe (3), a hearth (6) is arranged at the top of the first filter screen (4), a coal port (5) is arranged on one side of the shell (1), a boiler body (7) is fixed at the top of the shell (1), a second filter screen (8) is installed at the bottom of the boiler body (7), connecting grooves (9) are fixed at two ends of the second filter screen (8), a first plate heat exchanger (10) is arranged at the bottom of the second filter screen (8), a fixing pipe (11) is installed on one side of the second filter screen (8), heat insulation layers (13) are arranged on two sides of the first filter screen (4), and a heat absorption layer (12) wraps the surface of each heat insulation layer (13, a conveying pipe (14) is connected to the surface of the heat absorption layer (12), a second plate heat exchanger (15) is mounted at one end of the conveying pipe (14), and a fan (16) is embedded in the surface of the shell (1);
burning coal is added through the coal port (5), the aperture of the first filter screen (4) is 0.1mm, the burning coal can not fall, the fan (2) sucks cold air, the air is transmitted into the hearth (6) through the air transmission pipe (3), the burning coal burns to generate heat, because the radius of the burning coal is smaller, the burning coal is fluidized by wind, the heat is transferred to the pot body (7) after burning, the pot body (7) is heated by the heat, then the fluidized hot wind passes through the second filter screen (8), after the burning coal which is not completely burnt is blocked by the second filter screen (8), returns to the upper part of the first filter screen (4) through the fixed pipe (11) again, carries out fluidized combustion again, the surface of the boiler is provided with the fan (16), so that the first plate heat exchanger (10), the second plate heat exchanger (15) and the fan (2) can be conveniently radiated, and the service life of each device is prolonged;
the first plate heat exchanger (10) converts the boiler body (7) by using the residual heat, the heat energy of the residual heat is converted and then discharged into the air delivery pipe (3), the heating of the next hearth (6) is facilitated, cold air after the heat energy conversion is discharged out of the boiler through the first plate heat exchanger (10), the second plate heat exchanger (15) converts cooling liquid with heat energy into new cooling liquid, the heat energy is transmitted into the air delivery pipe (3), and the heating and the combustion in the hearth are facilitated;
the fixed pipe (11) is obliquely arranged, and the height of the fixed pipe (11) is higher than that of the first filter screen (4);
the interior of the heat absorption layer (12) is filled with cooling liquid, the heat absorption layer (12) is arranged in a cooling circulation mode, the cooling liquid can absorb waste heat, and the cooling circulation device is convenient for recycling the waste heat, so that the waste heat utilization rate of the boiler is increased;
the heat insulation layer (13) is of an inner vacuum structure, and the outer contour of the heat insulation layer (13) is attached to the inner contour of the heat absorption layer (12); the vacuum structure is favorable for preventing heat from dissipating, and the outer contour of the heat insulation layer (13) is attached to the inner contour of the heat absorption layer (12), so that part of heat can be absorbed by the heat absorption layer (12) after the part of heat still passes through the heat insulation layer;
the conveying pipe (14) and the heat absorption layer (12) are of an integrated structure, and one end of the conveying pipe (14) is fixedly connected with the second plate type heat exchanger (15).
2. A circulating fluidized bed boiler according to claim 1, characterized in that: the spread groove (9) are provided with 4, and first filter screen (4) and second filter screen (8) are connected for the block with spread groove (9) respectively to the aperture of first filter screen (4) and second filter screen (8) is 0.1 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810786254.9A CN109099419B (en) | 2018-07-17 | 2018-07-17 | Circulating fluidized bed boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810786254.9A CN109099419B (en) | 2018-07-17 | 2018-07-17 | Circulating fluidized bed boiler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109099419A CN109099419A (en) | 2018-12-28 |
| CN109099419B true CN109099419B (en) | 2019-12-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810786254.9A Active CN109099419B (en) | 2018-07-17 | 2018-07-17 | Circulating fluidized bed boiler |
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| Country | Link |
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| CN (1) | CN109099419B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87213069U (en) * | 1987-09-01 | 1988-06-22 | 哈尔滨工业大学 | Combustion chamber with internal dedusting boiling bed |
| CN1059786A (en) * | 1989-07-19 | 1992-03-25 | 湖南大学 | Pulverized coal recovery and reburning system for coal feeding winnowing of fluidized bed furnace |
| CN2363200Y (en) * | 1999-02-06 | 2000-02-09 | 周雪生 | Bidirectional combustion type water-heating furnace |
| CN2610253Y (en) * | 2003-04-11 | 2004-04-07 | 李敬满 | Straw gasification heating furnace |
| CN201355067Y (en) * | 2009-02-20 | 2009-12-02 | 许敬轩 | Indoor heating dust-free energy-saving gasification furnace |
| CN204372916U (en) * | 2014-12-29 | 2015-06-03 | 哈尔滨果岭科技发展有限公司 | Double-circulating fluid bed multi-component fuel reactor |
| CN205424903U (en) * | 2016-03-13 | 2016-08-03 | 林丽芳 | Energy -saving and environment -friendly boiler |
| CN205535959U (en) * | 2015-12-08 | 2016-08-31 | 张勇 | Living beings automatic control granule cooking heating stove |
-
2018
- 2018-07-17 CN CN201810786254.9A patent/CN109099419B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87213069U (en) * | 1987-09-01 | 1988-06-22 | 哈尔滨工业大学 | Combustion chamber with internal dedusting boiling bed |
| CN1059786A (en) * | 1989-07-19 | 1992-03-25 | 湖南大学 | Pulverized coal recovery and reburning system for coal feeding winnowing of fluidized bed furnace |
| CN2363200Y (en) * | 1999-02-06 | 2000-02-09 | 周雪生 | Bidirectional combustion type water-heating furnace |
| CN2610253Y (en) * | 2003-04-11 | 2004-04-07 | 李敬满 | Straw gasification heating furnace |
| CN201355067Y (en) * | 2009-02-20 | 2009-12-02 | 许敬轩 | Indoor heating dust-free energy-saving gasification furnace |
| CN204372916U (en) * | 2014-12-29 | 2015-06-03 | 哈尔滨果岭科技发展有限公司 | Double-circulating fluid bed multi-component fuel reactor |
| CN205535959U (en) * | 2015-12-08 | 2016-08-31 | 张勇 | Living beings automatic control granule cooking heating stove |
| CN205424903U (en) * | 2016-03-13 | 2016-08-03 | 林丽芳 | Energy -saving and environment -friendly boiler |
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| Publication number | Publication date |
|---|---|
| CN109099419A (en) | 2018-12-28 |
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Effective date of registration: 20191104 Address after: 234000 Room 108, 4 Building, Xichang South Road Healthy Business Industrial Park, Shoe City Management Committee, Suzhou City, Anhui Province Applicant after: ANHUI HUATENG AGRICULTURAL TECHNOLOGY Co.,Ltd. Address before: 213300 Jiangsu Province Changzhou Liyang Kunlun North Road 288 Jiangsu Shente Iron and Steel Co., Ltd. Applicant before: Xing Xiao |
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Effective date of registration: 20230904 Address after: 150023 Dawangjiatun, Jinxing Village, Songbei Town, Songbei District, Harbin City, Heilongjiang Province Patentee after: Jieneng Thermal Power Station Co.,Ltd. Address before: 234000 room 108, building 4, health business industrial park, Xichang South Road, shoe city management committee, Suzhou City, Anhui Province Patentee before: ANHUI HUATENG AGRICULTURAL TECHNOLOGY Co.,Ltd. |