CN118031205A - Circulating fluidized bed boiler - Google Patents
Circulating fluidized bed boiler Download PDFInfo
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- CN118031205A CN118031205A CN202410218142.9A CN202410218142A CN118031205A CN 118031205 A CN118031205 A CN 118031205A CN 202410218142 A CN202410218142 A CN 202410218142A CN 118031205 A CN118031205 A CN 118031205A
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- combustion chamber
- pipe
- main combustion
- fluidized bed
- main
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- 238000002485 combustion reaction Methods 0.000 claims abstract description 195
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 50
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 50
- 239000001301 oxygen Substances 0.000 claims abstract description 50
- 239000000463 material Substances 0.000 claims abstract description 37
- 238000009826 distribution Methods 0.000 claims abstract description 14
- 239000007789 gas Substances 0.000 claims description 44
- 238000000926 separation method Methods 0.000 claims description 21
- 230000003009 desulfurizing effect Effects 0.000 claims description 20
- 239000003795 chemical substances by application Substances 0.000 claims description 19
- 238000004064 recycling Methods 0.000 claims description 18
- 210000003437 trachea Anatomy 0.000 claims description 10
- 238000007599 discharging Methods 0.000 claims description 9
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 241001233242 Lontra Species 0.000 claims 1
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 238000009991 scouring Methods 0.000 abstract description 2
- 239000000975 dye Substances 0.000 description 28
- 239000003245 coal Substances 0.000 description 26
- 238000000034 method Methods 0.000 description 14
- 239000000446 fuel Substances 0.000 description 12
- 239000002245 particle Substances 0.000 description 11
- 238000005507 spraying Methods 0.000 description 7
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 6
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 239000000126 substance Substances 0.000 description 5
- 239000002956 ash Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000006477 desulfuration reaction Methods 0.000 description 3
- 230000023556 desulfurization Effects 0.000 description 3
- 239000000686 essence Substances 0.000 description 3
- 239000011343 solid material Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 235000002918 Fraxinus excelsior Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- 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 invention relates to the field of circulating fluidized bed boilers, in particular to a circulating fluidized bed boiler, which comprises a support, wherein a support is fixedly arranged at the top of the support, belt pulleys are arranged at the left side and the right side of the support, the right side of the support is higher than the left side, an inclined conveyor belt is sleeved outside the belt pulleys, anti-slip teeth are arranged on an outer array of the inclined conveyor belt, air conveyed to the inside of a main combustion chamber through a first air jet pipe can improve the air flow distribution in the main combustion chamber, the material is helped to enter the inside of a secondary combustion chamber to the right side when moving to the top of the main combustion chamber, the scouring of the material to the wall surface is reduced, the service life of the device is prolonged, a plurality of first air jet pipes are uniformly arranged at the top of the air jet pipe, the air flow which is introduced into the device through the first air jet pipes is more stable, oxygen is contained in the air blown in through the first air jet pipes, and the inside of the main combustion chamber can also be helped, and the efficiency of the device is improved.
Description
Technical Field
The invention relates to the field of circulating fluidized bed boilers, in particular to a circulating fluidized bed boiler.
Background
The circulating fluidized bed boiler is a high-efficiency and low-pollution combustion device, belongs to a fluidized bed combustion technology, plays an important role in energy conversion, particularly in the field of coal-fired power generation, is widely focused and applied due to the characteristics of strong adaptability to fuel, high combustion efficiency, low emission pollution and the like, improves the heat efficiency of a coal-fired power plant, obviously reduces the pollution to the environment, and becomes an important direction of a modern power station boiler along with the continuous progress of the technology.
However, in the prior art, the components inside the boiler are inconvenient to protect in the use process, so that the abrasion degree of the device is higher due to the collision between materials and internal components, the components of the boiler are easy to crack or hole, and the leakage problem is further caused to maintain, so that the maintenance cost is increased, the economic benefit of enterprises is influenced, the heat transfer effect is possibly influenced if the heating surface inside the boiler is worn, the heat efficiency of the boiler is reduced, the energy consumption is increased, and the like.
Disclosure of Invention
This section is intended to outline some aspects of embodiments of the application and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description of the application and in the title of the application, which may not be used to limit the scope of the application.
Therefore, the technical problems to be solved by the invention are as follows: the prior art's circulating fluidized bed boiler is inconvenient in the use protects the inside subassembly of boiler, leads to the material to collide each other with the internal part and leads to the wearing and tearing degree of device higher, leads to the part of boiler to appear cracking or hole easily, and then causes the leakage problem to maintain, and this has not only increased cost of maintenance, can also lead to the interruption of production, influences the economic benefits of enterprise, and the inside heating surface of boiler is worn and torn if appears simultaneously, probably influences the heat transfer effect, leads to the thermal efficiency of boiler to reduce, increases the energy consumption scheduling problem.
In order to solve the technical problems, the invention provides the following technical scheme: the utility model provides a circulating fluidized bed boiler, includes the support, the top fixed mounting of support has the support, the belt pulley is all installed to the left and right sides of support, the right side height of support is greater than left side height, the outside cover of belt pulley is rolled up there is the slope conveyer belt, the skid-proof tooth is installed to the outside array of slope conveyer belt, the equal fixed mounting in both sides has the baffle around the support, the right side parallel mount of support has the horizontal conveying belt, the right side fixed mounting of horizontal conveying belt has the mouth that gathers materials, the mouth that gathers materials is triangle-shaped, the right side fixed mounting of mouth that gathers materials has hollow conveying pipe.
Preferably, a combustion chamber is fixedly arranged on the right side of the feeding pipe, and a first feeding hole which is matched with the feeding pipe in size is formed in a position, corresponding to the feeding pipe, of the combustion chamber.
Preferably, a main combustion chamber is arranged in the combustion chamber, a screen plate which is matched with the main combustion chamber in size is arranged at the bottom of the main combustion chamber, oxygen delivery pipes are arranged at the bottom array of the main combustion chamber, the main combustion chamber and the oxygen delivery pipes are communicated with each other, a main air pipe is fixedly arranged at the bottom of the oxygen delivery pipe, and the oxygen delivery pipes and the main air pipe are communicated with each other.
Preferably, the left side intercommunication of main tracheal is installed the gas supply pipe, the top fixed mounting of gas supply pipe has first jet, first jet is fixed with the combustion chamber each other, first jet and combustion chamber circulate each other, first jet evenly is provided with four groups, the tracheal right side connection of main is installed the gas-dividing pipe, the fan is installed on the tracheal right side of gas-dividing.
Preferably, an auxiliary air pipe is arranged behind the right end of the air distribution pipe, and 3 second air injection pipes which are communicated with each other are uniformly arranged at the top of the auxiliary air pipe.
Preferably, the left side array of combustion chamber installs the desulfurizing agent storehouse, the desulfurizing agent admission pipe is installed to the bottom in desulfurizing agent storehouse, the desulfurizing agent storehouse is through desulfurizing agent admission pipe and main combustion chamber intercommunication.
Preferably, the inside right side fixed mounting of main combustion chamber has vertical baffle, the baffle is fixed with the bottom of main combustion chamber each other, the auxiliary combustion chamber has been seted up on the right side of baffle, connecting channel has been seted up to the lower right side of auxiliary combustion chamber, the swash plate of two sets of slopes is all installed to the upper and lower both sides of connecting channel, the burnout chamber has been seted up on the right side of swash plate, circulate each other between main combustion chamber, auxiliary combustion chamber and the burnout chamber.
Preferably, the right side of burn-out room has seted up the residue and has said, the right side of residue is said installs the separation storehouse, said separation storehouse's internally mounted has separators, said top fixed mounting of separators has top passageway, said right side of top passageway installs the tail storehouse, form the circulation structure between tail storehouse and separation storehouse, the internal array of the tail storehouse installs the economizer, the bottom fixed mounting of the tail storehouse has exhaust passage.
Preferably, the bottom of separation storehouse is installed the discharging pipe, the bottom connection of discharging pipe is installed and is recycled the pipe, the right side connection of discharging pipe is installed and is left collecting pipe, mutually perpendicular is installed between recycling pipe and the left collecting pipe, the place ahead of recycling pipe is connected and is installed the passageway of recycling, the left side fixed mounting of passageway of recycling has the second feed inlet, circulate each other between second feed inlet and the main combustion chamber.
The invention has the following beneficial effects:
In the use process, air is conveyed to the inside of the device through the air distribution pipe in the use process, then enters the oxygen conveying pipe through the main air pipe, and because the oxygen conveying pipe and the main combustion chamber are mutually circulated, the air in the oxygen conveying pipe can be conveyed into the main combustion chamber so as to facilitate the combustion of coal, and meanwhile, the air moving from bottom to top can drive lighter particles in fuel to move upwards, so that the inside of the main combustion chamber is in a fluidized combustion state, the dye can be conveniently burnt out, the utilization rate of the dye is improved, the net plate arranged in the main combustion chamber can also prevent the ash burnt in the main combustion chamber from entering the oxygen conveying pipe to cause pipeline blockage while the oxygen conveying pipe is convenient to convey oxygen into the main combustion chamber, the device is damaged, and the plurality of groups of oxygen conveying pipes are arranged at the bottom array of the main combustion chamber so as to improve the oxygen conveying efficiency in the main combustion chamber, further improve the oxygen content in the main combustion chamber, facilitate the further combustion of coal and improve the utilization rate of the device to coal.
In the use process, the gas flowing in the main gas pipe is conveyed to the inside of the main combustion chamber through the oxygen conveying pipe to support combustion, then enters the inside of the main combustion chamber through the main gas pipe, then enters the inside of the main combustion chamber through the first gas conveying pipe, as lighter fuel particles move upwards to burn, because solid materials such as coal circulate at a high speed in the main combustion chamber, certain parts in the main combustion chamber are easily worn, at the moment, the air conveyed to the inside of the main combustion chamber through the first gas conveying pipe can improve the air flow distribution in the main combustion chamber, the air is helped to enter the inside of the auxiliary combustion chamber to the right side when moving to the top of the main combustion chamber, the flushing of the material on the wall surface is reduced, the service life of the device is prolonged, a plurality of first gas conveying pipes are uniformly arranged at the top of the air conveying pipe, the air flow which is led into the device through the first gas conveying pipe is more stable, and the air blown in through the first gas conveying pipe also contains oxygen, the inside the main combustion chamber can help the combustion chamber to burn, the efficiency of the device is improved, the air blown into the auxiliary combustion chamber by the auxiliary combustion pipe can also enters the inside the auxiliary combustion chamber through the auxiliary combustion chamber, and then the inside of the auxiliary combustion chamber is convenient to change the internal combustion chamber, the oxygen utilization ratio is convenient to use of the device, and the internal combustion device is convenient to use, and the oxygen utilization is convenient to flow and the internal combustion device is improved.
In the using process, coal burnt in the main combustion chamber enters the auxiliary combustion chamber for further combustion under the action of air flow, the utilization rate of the whole device for fuel is improved, the coal enters the burnout chamber for burnout through the connecting channel, and the inclined plates arranged on the upper side and the lower side of the connecting channel can guide passing solid particles in the process of entering the partition plate from the inside of the auxiliary combustion chamber, so that vertical collision between the particles and the device is reduced while the particles are prevented, the abrasion resistance of the device is improved, the damage of the device is avoided, and the whole service life of the device is prolonged.
In the use process, the desulfurizing agent can be placed in the desulfurizing agent bin arranged on the left side of the combustion chamber, then the desulfurizing agent is sent into the main combustion chamber through the desulfurizing agent inlet pipe to react with the burnt fuel residues, harmful substance essences such as sulfur dioxide generated by combustion are purified as calcium sulfate, meanwhile, a plurality of groups of desulfurizing agent bins are arranged on the left side of the combustion chamber, the rate of the desulfurizing agent in the desulfurizing agent bin entering the main combustion chamber can be improved, meanwhile, the desulfurizing agent can enter the main combustion chamber through a plurality of cavity openings, the contact area between the desulfurizing agent in the main combustion chamber and fuel is improved, the desulfurizing efficiency in the device is improved, the device is convenient to use, the environment-friendly performance of the device is improved, the second feeding opening and the main combustion chamber are mutually circulated, the materials burnt by the burning chamber in the use process are separated into the main combustion chamber through the separation effect of the separator in the separation chamber, and then useful substances enter the main combustion chamber through the recycling pipe and the recycling channel to be further combusted, the utilization efficiency of the device is improved, the waste of the resources of the device is avoided, and the environment-friendly boiler is ensured to have been cooled, and the environment-friendly materials are guaranteed to be discharged and the boiler is cooled.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:
Fig. 1 is a schematic view of the overall structure of the circulating fluidized bed boiler of the present invention.
Fig. 2 is a schematic view of a material transporting structure of the circulating fluidized bed boiler of the present invention.
FIG. 3 is a schematic sectional view of a combustion chamber of the circulating fluidized bed boiler of the present invention.
Fig. 4 is a schematic view of the overall structure of a combustion chamber of the circulating fluidized bed boiler of the present invention.
Fig. 5 is a right-side view of the combustion chamber of the circulating fluidized bed boiler of the present invention.
Fig. 6 is a schematic overall sectional structure of the circulating fluidized bed boiler of the present invention.
Fig. 7 is a schematic sectional view of the combustion structure of the circulating fluidized bed boiler of the present invention.
In the figure: 1. a bracket; 2. a support; 3. a belt pulley; 4. tilting the conveyor belt; 5. anti-slip teeth; 6. a baffle; 7. a horizontal conveyor belt; 8. a material collecting port; 9. a feed pipe; 10. a combustion chamber; 11. a first feed port; 12. a main combustion chamber; 13. a screen plate; 14. an oxygen supply pipe; 15. a main air pipe; 16. an air supply pipe; 17. a first gas lance; 18. a gas distribution pipe; 19. a blower; 20. an auxiliary air pipe; 21. a second gas lance; 22. a desulfurizing agent bin; 23. a desulfurizing agent inlet pipe; 24. a connection channel; 25. a sloping plate; 26. a burnout chamber; 27. a residue channel; 28. a separation bin; 29. a separator; 30. a top channel; 31. a tail bin; 32. an economizer; 33. an exhaust passage; 34. a discharge pipe; 35. recycling the pipe; 36. a residue collecting pipe; 37. the channel is reused; 38. a second feed inlet; 39. a partition plate; 40. and a secondary combustion chamber.
Detailed Description
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
Example 1
According to a first embodiment of the present invention, the circulating fluidized bed boiler comprises a support 1, a support 2 is fixedly installed at the top of the support 1, pulleys 3 are installed at the left side and the right side of the support 2, the right side of the support 2 is higher than the left side, an inclined conveyor belt 4 is sleeved outside the pulleys 3, anti-slip teeth 5 are installed on an outer array of the inclined conveyor belt 4, baffles 6 are fixedly installed at the front side and the rear side of the support 2, a horizontal conveyor belt 7 is installed in parallel on the right side of the support 1, a material collecting opening 8 is fixedly installed at the right side of the horizontal conveyor belt 7, the material collecting opening 8 is triangular, a hollow feeding pipe 9 is fixedly installed at the right side of the material collecting opening 8, in the use process, the materials such as coal to be burned are placed above the inclined conveyor belt 4, then the anti-slip teeth 5 above the inclined conveyor belt 4 can avoid dye loss caused by downward sliding of the dye, meanwhile, the baffles 6 and the anti-slip teeth 5 cooperate with each other to avoid dropping of the dye, then are conveyed to the upper side of the horizontal conveyor belt 7 to the right, the horizontal conveyor belt 7 is conveyed, the right after being conveyed to the end of the horizontal conveyor belt 7, the dye is conveyed to the end of the horizontal conveyor belt 7, the right side, the material collecting opening 8 is triangular, the material collecting opening 8 is fixedly installed, the material collecting opening 8 is formed, the material is formed into the hollow feeding pipe 9, and the dye can be completely combusted, and the dye can be prevented from entering the inside of the main feeding pipe through the hollow feeding pipe through the material collecting pipe through the dye collecting opening, and the dye collecting material is prevented from entering into the main material through the hollow feeding pipe, and the inside through the dye collecting structure.
Example 2
This embodiment is based on the previous embodiment, and differs from the previous embodiment in that this embodiment provides a feed structure of a circulating fluidized bed boiler, in particular.
The right side fixed mounting of conveying pipe 9 has combustion chamber 10, and combustion chamber 10 and the first feed inlet 11 that coincide with conveying pipe 9 size have been seted up to the position that combustion chamber 10 corresponds with conveying pipe 9, and combustion chamber 10 the same with conveying pipe 9 size is installed in combustion chamber 10's left side, can avoid the dyestuff to drop from the junction between conveying pipe 9 and the combustion chamber 10, influences the combustion efficiency of device, avoids coal to drop and influences the device use.
Example 3
The present embodiment is based on the previous embodiment, and is different from the previous embodiment in that the present embodiment provides an oxygen feeding structure of a circulating fluidized bed boiler, specifically.
The main combustion chamber 12 is arranged in the combustion chamber 10, the screen 13 which is matched with the main combustion chamber 12 in size is arranged at the bottom of the main combustion chamber 12, the oxygen delivery pipe 14 is arranged at the bottom array of the main combustion chamber 12, the main combustion chamber 12 and the oxygen delivery pipe 14 are mutually communicated, the main air pipe 15 is fixedly arranged at the bottom of the oxygen delivery pipe 14, the oxygen delivery pipe 14 and the main air pipe 15 are mutually communicated, in the use process, the fan 19 can convey air to the inside of the device through the air distribution pipe 18, then the air enters the inside of the oxygen delivery pipe 14 through the main air pipe 15, and because the oxygen delivery pipe 14 and the main combustion chamber 12 are mutually communicated, the air in the oxygen delivery pipe 14 can be conveyed into the inside of the main combustion chamber 12 so as to facilitate the combustion of coal, meanwhile, lighter particles in the dye can be driven to move upwards by air moving downwards and upwards, so that the inside of the main combustion chamber 12 is in a fluidized combustion state, the dye is conveniently burnt out, the utilization rate of the dye is improved, the screen 13 arranged in the main combustion chamber 12 is convenient for oxygen delivery from the oxygen delivery pipe 14 to the inside of the main combustion chamber 12, and meanwhile, the phenomenon that the pipeline is blocked due to the fact that ashes burnt in the main combustion chamber 12 enter the oxygen delivery pipe 14 can be avoided, the device is damaged, and a plurality of groups of oxygen delivery pipes 14 are arranged at the bottom of the main combustion chamber 12 in an array manner, so that the oxygen delivery efficiency to the inside of the main combustion chamber 12 can be improved, the oxygen content in the main combustion chamber 12 is further improved, the coal is conveniently burnt out further, and the utilization rate of the device to the coal is improved.
Example 4
The present embodiment is based on the previous embodiment, and differs from the previous embodiment in that the present embodiment provides an anti-wear structure of a circulating fluidized bed boiler, in particular.
The left side of main trachea 15 is connected and is installed gas supply pipe 16, the top fixed mounting of gas supply pipe 16 has first gas jet 17, first gas jet 17 and combustion chamber 10 are fixed each other, first gas jet 17 and combustion chamber 10 circulate each other, first gas jet 17 evenly is provided with four groups, the right side connection of main trachea 15 is installed gas distribution pipe 18, fan 19 is installed on the right side of gas distribution pipe 18, the gas that circulates in main trachea 15 still can get into the inside of gas supply pipe 16 through main trachea 15 after the combustion-supporting in main combustion chamber 12 is carried to the oxygen supply pipe 14, then the first gas jet 17 through the top of gas supply pipe 16 gets into the inside of main combustion chamber 12, because lighter dyestuff granule can upwards move and burn, because solid material such as coal circulates in main combustion chamber 12 at a high speed, therefore some parts in main combustion chamber 12 are easily worn out, the air distribution in the inside main combustion chamber 12 can be improved through the air distribution of first gas jet 17, help the material to the right side when moving to the top of main combustion chamber 12 gets into the inside of auxiliary combustion chamber 40, and also can blow into the inside of auxiliary combustion chamber 40 through the device through the first gas jet 17, and the air jet 17 is more evenly through the top of the device, and the life-saving device is also can be improved through the top of gas jet 17, the device is installed to the top of the device, the device is more stable, the top is used for the top through the top of the gas jet 17, and the device is more stable and has better efficiency.
The auxiliary air pipe 20 is installed at the right-hand member rear of the air distribution pipe 18, 3 second air injection pipes 21 that circulate each other are evenly installed at the top of auxiliary air pipe 20, the air of blowing in the device by fan 19 also can enter into the inside of auxiliary air pipe 20, then the inside that enters into auxiliary combustion chamber 40 through the second air injection pipe 21 of auxiliary air pipe 20 rear installation is convenient for the material of burning changes the angle that flows at the inside of device, simultaneously also can carry oxygen and be convenient for the burning of inside fuel, improve the utilization ratio of device to coal, also can improve the availability factor of device, make things convenient for the device to use.
Example 5
This embodiment is based on the previous embodiment, and differs from the previous embodiment in that this embodiment provides a desulfurization structure of a circulating fluidized bed boiler, in particular.
The left side array of combustion chamber 10 installs desulfurizer storehouse 22, desulfurizer entering pipe 23 is installed to the bottom of desulfurizer storehouse 22, desulfurizer storehouse 22 passes through desulfurizer entering pipe 23 and main combustion chamber 12 and circulates each other, can place the desulfurizer in the inside of desulfurizer storehouse 22 of the left side installation of combustion chamber 10 in the use, then send into the inside of main combustion chamber 12 through desulfurizer entering pipe 23 and react with the fuel residue that burns out, the harmful substance essence such as sulfur dioxide that will burn out purifies for the calcium sulfate, be provided with multiunit desulfurizer storehouse 22 in the left side of combustion chamber 10 simultaneously, can improve the inside rate that desulfurizer of desulfurizer storehouse 22 enters into the inside of main combustion chamber 12, simultaneously also can make the desulfurizer enter into the inside of main combustion chamber 12 through a plurality of accents, improve the area of contact between desulfurizer and the fuel inside the main combustion chamber 12, improve the inside desulfurization efficiency of device, make things convenient for the device to use, improve the environmental protection performance of device.
Example 6
The present embodiment is based on the previous embodiment, and differs from the previous embodiment in that the present embodiment provides a combustion structure of a circulating fluidized bed boiler, in particular.
The inside right side fixed mounting of main combustion chamber 12 has vertical baffle 39, baffle 39 and the bottom of main combustion chamber 12 are fixed each other, secondary combustion chamber 40 has been seted up on the right side of baffle 39, connecting channel 24 has been seted up to the lower right side of secondary combustion chamber 40, two sets of inclined swash plates 25 are all installed to the upper and lower both sides of connecting channel 24, burnout chamber 26 has been seted up on the right side of swash plate 25, circulate each other between main combustion chamber 12, secondary combustion chamber 40 and the burnout chamber 26, the coal after the inside combustion of main combustion chamber 12 can enter into the inside of secondary combustion chamber 40 under the effect of air current in the use carries out further burning, improve the utilization ratio of device whole to fuel, later enter into the inside of burnout chamber 26 through connecting channel 24, the in-process that enters into the inside of baffle 39 from secondary combustion chamber 40, swash plate 25 that both sides all set up can lead the solid particle that passes, also can reduce the vertical collision between particle and the device when avoiding the particle to be blockked, improve the device's degree of wear and tear resistance, the whole life of device is improved.
Example 7
The present embodiment is based on the previous embodiment, and differs from the previous embodiment in that the present embodiment provides a circulating fluidized bed boiler heat recovery structure, in particular.
The right side of the burnout chamber 26 is provided with a residue channel 27, the right side of the residue channel 27 is provided with a separation bin 28, the inside of the separation bin 28 is provided with a separator 29, the top of the separator 29 is fixedly provided with a top channel 30, the right side of the top channel 30 is provided with a tail bin 31, a circulating structure is formed between the tail bin 31 and the separation bin 28, an internal array of the tail bin 31 is provided with a coal economizer 32, the bottom of the tail bin 31 is fixedly provided with an exhaust channel 33, a high-temperature air flow separated by the separator 29 in the use process is transmitted to the inside of the tail bin 31 through the top channel 30, and then a plurality of groups of coal economizers 32 are arranged in the tail bin 31 to perform heat exchange on the waste heat of the high-temperature air flow, so that the utilization efficiency of coal combustion heat is improved, the whole energy utilization efficiency of the device is further improved, and the plurality of groups of coal economizers 32 arranged in the tail bin 31 can enable the heat utilization rate to be higher, and the device is convenient to use.
The bottom of the separation bin 28 is provided with the discharging pipe 34, the bottom of the discharging pipe 34 is connected and provided with the recycling pipe 35, the right side of the discharging pipe 34 is connected and provided with the residue collecting pipe 36, the recycling pipe 35 and the residue collecting pipe 36 are mutually perpendicular, the front of the recycling pipe 35 is connected and provided with the recycling channel 37, the left side of the recycling channel 37 is fixedly provided with the second feeding port 38, the second feeding port 38 and the main combustion chamber 12 are communicated with each other, materials burnt through the burnout chamber 26 in the use process can enter the separation bin 28, residues are separated through the separation effect of the separator 29 in the separation bin 28, useful materials can enter the main combustion chamber 12 through the recycling pipe 35 and the recycling channel 37 for further combustion, the utilization efficiency of the device for coal is improved, the resource waste is avoided, the burnt materials are cooled and collected through the residue collecting pipe 36, and the efficient operation and the environment-friendly emission of the boiler are ensured.
Working principle: firstly, materials such as coal to be combusted are placed above an inclined conveyor belt 4 for conveying, then anti-slip teeth 5 above the inclined conveyor belt 4 can avoid dye loss caused by downward sliding of the dye, meanwhile, a baffle 6 and the anti-slip teeth 5 are mutually matched to avoid falling of the dye, then the materials are conveyed to the right after being conveyed to the upper part of a horizontal conveyor belt 7, the dyes of the horizontal conveyor belt 7 are collected through a triangular collecting port 8 after being conveyed to the end of the horizontal conveyor belt 7, the dye loss is avoided, then the collected dyes enter the main combustion chamber 12 through a conveying pipe 9 for combustion, the conveying pipe 9 is of a hollow structure, the dye can be further prevented from falling, the dyes can enter the main combustion chamber 12 for combustion, then a fan 19 can convey air to the inside of the device through a gas distribution pipe 18, the air enters the inside of an oxygen conveying pipe 14 through a main gas pipe 15, because the oxygen delivering pipe 14 and the main combustion chamber 12 are communicated with each other, air in the oxygen delivering pipe 14 is delivered into the main combustion chamber 12 so as to facilitate the combustion of coal, and meanwhile, the air moving from bottom to top drives lighter particles in the dye to move upwards, so that the inside of the main combustion chamber 12 is in a fluidized combustion state, the burnout of the dye is facilitated, the utilization rate of the dye is improved, the net plate 13 arranged in the main combustion chamber 12 can prevent the ash burnt in the main combustion chamber 12 from entering the oxygen delivering pipe 14 to cause pipeline blockage while the oxygen delivering pipe 14 is convenient for delivering oxygen into the main combustion chamber 12, the device is damaged, the plurality of groups of oxygen delivering pipes 14 are arranged at the bottom of the main combustion chamber 12 in an array, the oxygen delivering efficiency of the inside of the main combustion chamber 12 can be improved, the oxygen content in the main combustion chamber 12 is further improved, the coal is further combusted conveniently, the utilization rate of the device to the coal is improved, meanwhile, the desulfurizer bin 22 arranged at the left side of the combustion chamber 10 can be internally provided with a desulfurizer, and then the desulfurizer is sent into the main combustion chamber 12 through the desulfurizer inlet pipe 23 to react with burnt fuel residues, harmful substance essences such as sulfur dioxide generated by combustion are purified as calcium sulfate, meanwhile, the left side of the combustion chamber 10 is provided with a plurality of groups of desulfurizer bins 22, so that the rate of the desulfurizer in the desulfurizer bin 22 entering the main combustion chamber 12 can be improved, and meanwhile, the desulfurizer can enter the main combustion chamber 12 through a plurality of cavity openings, the contact area between the desulfurizer and fuel in the main combustion chamber 12 is improved, the desulfurization efficiency in the device is improved, the device is convenient to use, and the environmental protection performance of the device is improved;
the gas flowing in the main gas pipe 15 is conveyed to the inside of the main combustion chamber 12 through the oxygen conveying pipe 14 and then enters the inside of the auxiliary combustion chamber 40 through the main gas pipe 15, then enters the inside of the main combustion chamber 12 through the first gas spraying pipe 17 at the top of the gas conveying pipe 16, as lighter dye particles move upwards to burn, certain parts in the inside of the main combustion chamber 12 are easily worn due to the fact that solid materials such as coal circulate at a high speed in the main combustion chamber 12, at the moment, the air conveyed to the inside of the main combustion chamber 12 through the first gas spraying pipe 17 can improve the air flow distribution in the inside of the main combustion chamber 12, help materials enter the inside of the auxiliary combustion chamber 40 to the right side when moving to the top of the main combustion chamber 12, reduce the scouring of the wall surfaces of the materials, improve the service life of the device, and uniformly install a plurality of first gas spraying pipes 17 at the top of the gas conveying pipe 16, so that the air flow which is introduced into the device through the first gas spraying pipes 17 is more stable, and the air blown in through the first gas spraying pipes 17 also contains oxygen, so that the inside of the main combustion chamber 12 can improve the combustion efficiency of the fuel gas, and simultaneously the right part 18 of the device is also provided with the auxiliary combustion chamber 20 through the first gas spraying pipes 20, and the right part of the air spraying pipe 20 is also arranged at the top of the air conveying pipe 20, so that the air flow rate of the auxiliary combustion device can be changed by the air flowing into the inside of the auxiliary combustion chamber 20 by the device 20, and the air inlet device 20 is convenient to change the air flow rate of the inside of the device, and the air inlet device is convenient to use the air inlet device 20;
Finally, the high-temperature air flow separated by the separator 29 is conveyed to the inside of the tail bin 31 through the top channel 30, then, a plurality of groups of economizers 32 are arranged in the tail bin 31 and can perform heat exchange on the waste heat of the high-temperature air flow, so that the utilization efficiency of coal combustion heat is improved, the overall energy utilization efficiency of the device can be further improved, the plurality of groups of economizers 32 arranged in the inside of the tail bin 31 can enable the heat utilization efficiency to be higher, the device is convenient to use, materials burnt by the burnout chamber 26 in the use process can enter the inside of the separation bin 28, residues are separated through the separation effect of the separator 29 in the separation bin 28, useful substances are circulated into the inside of the main combustion chamber 12 through the recycling pipe 35 and the recycling channel 37 to be further combusted, the utilization efficiency of the device on coal is improved, the resource waste is avoided, and the burnt materials are cooled and collected through the residue collecting pipe 36 to ensure the efficient operation and environment-friendly emission of the boiler.
Claims (9)
1. A circulating fluidized bed boiler comprising a support (1), characterized in that: the top fixed mounting of support (1) has support (2), belt pulley (3) are all installed to the left and right sides of support (2), the right side height of support (2) is greater than left side height, outside cover of belt pulley (3) is rolled up has slope conveyer belt (4), anti-skidding tooth (5) are installed to the outside array of slope conveyer belt (4), the equal fixed mounting in front and back both sides of support (2) has baffle (6), horizontal conveyer belt (7) are installed to the right side parallel of support (1), the right side fixed mounting of horizontal conveyer belt (7) has collection material mouth (8), collection material mouth (8) are triangle-shaped, the right side fixed mounting of collection material mouth (8) has hollow conveying pipe (9).
2. The circulating fluidized bed boiler of claim 1, wherein: the right side of the feeding pipe (9) is fixedly provided with a combustion chamber (10), and a first feeding hole (11) which is matched with the feeding pipe (9) in size is formed in a position, corresponding to the feeding pipe (9), of the combustion chamber (10).
3. The circulating fluidized bed boiler of claim 2, wherein: main combustion chamber (12) have been seted up to the inside of combustion chamber (10), otter board (13) that coincide with main combustion chamber (12) size have been placed to the bottom of main combustion chamber (12), oxygen supply pipe (14) are installed to the bottom array of main combustion chamber (12), main combustion chamber (12) and oxygen supply pipe (14) circulate each other, the bottom fixed mounting of oxygen supply pipe (14) has main trachea (15), oxygen supply pipe (14) and main trachea (15) circulate each other.
4. A circulating fluidized bed boiler in accordance with claim 3, characterized in that: the left side intercommunication of main trachea (15) is installed gas supply pipe (16), the top fixed mounting of gas supply pipe (16) has first jet-propelled pipe (17), first jet-propelled pipe (17) are fixed each other with combustion chamber (10), first jet-propelled pipe (17) circulate each other with combustion chamber (10), first jet-propelled pipe (17) evenly are provided with four groups, divide trachea (18) are installed in the right side connection of main trachea (15), fan (19) are installed on the right side of divide trachea (18).
5. The circulating fluidized bed boiler of claim 4, wherein: an auxiliary air pipe (20) is arranged behind the right end of the air distribution pipe (18), and 3 second air injection pipes (21) which are communicated with each other are uniformly arranged at the top of the auxiliary air pipe (20).
6. The circulating fluidized bed boiler of claim 2, wherein: the left side array of combustion chamber (10) is installed desulfurizer storehouse (22), desulfurizing agent admission pipe (23) are installed to the bottom of desulfurizer storehouse (22), desulfurizing agent storehouse (22) are through desulfurizing agent admission pipe (23) and main combustion chamber (12) circulation each other.
7. A circulating fluidized bed boiler in accordance with claim 3, characterized in that: the inside right side fixed mounting of main combustion chamber (12) has vertical baffle (39), the bottom of baffle (39) and main combustion chamber (12) is fixed each other, auxiliary combustion chamber (40) have been seted up on the right side of baffle (39), connecting channel (24) have been seted up to the lower right side of auxiliary combustion chamber (40), swash plate (25) of two sets of slopes are all installed to the upper and lower both sides of connecting channel (24), burn-out chamber (26) have been seted up on the right side of swash plate (25), circulate each other between main combustion chamber (12), auxiliary combustion chamber (40) and burn-out chamber (26).
8. The circulating fluidized bed boiler of claim 7, wherein: the right side of burn-up room (26) has seted up residue passageway (27), separation storehouse (28) are installed on the right side of residue passageway (27), the internally mounted of separation storehouse (28) has separator (29), the top fixed mounting of separator (29) has top passageway (30), tail storehouse (31) are installed on the right side of top passageway (30), constitute the circulation structure between tail storehouse (31) and separation storehouse (28), economizer (32) are installed to the inside array of tail storehouse (31), the bottom fixed mounting of tail storehouse (31) has exhaust passage (33).
9. The circulating fluidized bed boiler of claim 8, wherein: the bottom of separation storehouse (28) is installed discharging pipe (34), the bottom connection of discharging pipe (34) is installed and is recycled pipe (35), residue collecting pipe (36) are installed in the right side connection of discharging pipe (34), mutually perpendicular between recycling pipe (35) and residue collecting pipe (36), reuse passageway (37) are installed in the place ahead connection of recycling pipe (35), the left side fixed mounting of reuse passageway (37) has second feed inlet (38), second feed inlet (38) and main combustion chamber (12) are circulated each other.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410218142.9A CN118031205A (en) | 2024-02-28 | 2024-02-28 | Circulating fluidized bed boiler |
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