CN219588933U - Wide-load rapid peak regulating system of circulating fluidized bed boiler - Google Patents
Wide-load rapid peak regulating system of circulating fluidized bed boiler Download PDFInfo
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- CN219588933U CN219588933U CN202321167037.4U CN202321167037U CN219588933U CN 219588933 U CN219588933 U CN 219588933U CN 202321167037 U CN202321167037 U CN 202321167037U CN 219588933 U CN219588933 U CN 219588933U
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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
Abstract
The utility model relates to a circulating fluidized bed boiler wide load rapid peak regulation system, which comprises: the device comprises a hearth, a cyclone separator, a tail flue, an air preheater, an ash storage mechanism and an air supply assembly; the cyclone separator comprises a flue gas inlet, a flue gas outlet and a return valve, the outlet of the hearth is communicated with the flue gas inlet, the flue gas outlet is communicated with the tail flue, the return valve is communicated with the hearth through a return pipe, the air preheater is arranged in the tail flue, the air preheater comprises a cold end and a hot end, and the hot end is communicated with an air distribution plate of the hearth; the inlet of the secondary air blower is communicated with the outside air, the outlet of the secondary air blower is communicated with the cold end through a secondary air pipe, the inlet of the secondary branch pipe is communicated with the secondary air pipe between the outlet of the secondary air blower and the cold end, the ash storage mechanism is arranged on the secondary branch pipe to store solid particles in the return valve, the solid particles are utilized to heat the secondary air in the secondary branch pipe, the inlet of the primary air blower is communicated with the outlet of the secondary branch pipe and the outside air, and the outlet of the primary air blower is communicated with the cold end through a primary air pipe.
Description
Technical Field
The utility model relates to the technical field of boilers, in particular to a circulating fluidized bed boiler wide-load rapid peak regulation system.
Background
In order to realize carbon reduction emission of the circulating fluidized bed boiler, the circulating fluidized bed boiler works by actively opening and widening load and quickly adjusting peak.
In the prior art, a circulating fluidized bed rapid peak adjusting technology is applied, and more circulating ash rapid storage technology is applied, and particularly, the discharge and input of the circulating ash in a circulating fluidized bed boiler are controlled to control the convection heat transfer in the boiler, so that the rapid load lifting is realized. However, in the specific implementation process, when the unit operates in a low-load state, the temperature of the flue gas at the inlet of the air preheater is low, so that the air preheater is blocked, the resistance of the air preheater is increased, and the safe, economical and stable operation of the unit is influenced.
In the prior art, as the application number is CN201720585683.0, a circulating fluidized bed boiler load adjusting device is disclosed, and the problem of quick load lifting of a unit is realized, but the risks of blockage and corrosion of an air preheater cannot be avoided in the actual operation process.
Disclosure of Invention
The utility model aims to solve the technical problem that the air preheater is blocked and corroded at the same time when the quick load lifting of a unit in the prior art cannot be completed, so that the wide load quick peak adjusting system of the circulating fluidized bed boiler is provided.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a circulating fluidized bed boiler wide load rapid peaking system includes: the device comprises a hearth, a cyclone separator, a tail flue, an air preheater, an ash storage mechanism and an air supply assembly; the cyclone separator comprises a flue gas inlet, a flue gas outlet and a return valve, the outlet of the hearth is communicated with the flue gas inlet, the flue gas outlet is communicated with the tail flue, the return valve is communicated with the hearth through a return pipe, the air preheater is arranged in the tail flue, the air preheater comprises a cold end and a hot end, and the hot end is communicated with an air distribution plate of the hearth;
the ash storage mechanism comprises an ash cooler and an ash bin; the inlet of the ash bin is communicated with the feed back valve, the outlet of the ash bin is communicated with the feed back pipe, and the ash cooler is communicated between the ash bin and the feed back valve;
the air supply assembly comprises a secondary air machine, a primary air machine, a secondary air pipe, a primary air pipe and a secondary branch pipe, wherein an inlet of the secondary air machine is communicated with outside air, an outlet of the secondary air machine is communicated with the cold end through the secondary air pipe, an inlet of the secondary branch pipe is communicated with the secondary air pipe between an outlet of the secondary air machine and the cold end, an ash cooler is arranged on the secondary branch pipe and heats the secondary air in the secondary branch pipe, an inlet of the primary air machine is communicated with an outlet of the secondary branch pipe and the outside air, and an outlet of the primary air machine is communicated with the cold end through the primary air pipe.
Preferably, the ash storage mechanism further comprises a pneumatic conveying device, an inlet of the pneumatic conveying device is communicated with an outlet of the ash bin, and an outlet of the pneumatic conveying device is communicated with the feed back pipe.
Preferably, the ash storage mechanism further comprises a first baffle door and a second baffle door, wherein the first baffle door is arranged between the feed back valve and the ash cooler, and the second baffle door is arranged between the ash bin and the pneumatic conveying equipment.
Preferably, the air supply assembly further comprises a third flapper door and a fourth flapper door,
the third baffle door and the fourth baffle door are communicated with the secondary branch pipe, the third baffle door is positioned between the ash cooler and the outlet of the secondary fan, and the fourth baffle door is positioned between the ash cooler and the outlet of the primary fan.
Preferably, the device also comprises a flue gas recirculation mechanism, wherein the flue gas recirculation mechanism comprises a flue gas recirculation fan, condensing equipment and a flue gas pipe,
the inlet of the flue gas pipe is communicated with the outlet of the tail flue, and the outlet of the flue gas pipe is communicated with the inlet of the primary fan; the flue gas recirculation fan and the condensing equipment are sequentially communicated with the flue gas pipe.
Preferably, the flue gas recirculation mechanism further comprises a fifth baffle door, the fifth baffle door being disposed on the flue gas duct and the fifth baffle door being located between the condensing apparatus and the back flue outlet.
Preferably, the flue gas recirculation mechanism further comprises a desulfurization device and a chimney, wherein an inlet of the desulfurization device is communicated with an outlet of the tail flue, an outlet of the desulfurization device is communicated with the chimney, and an inlet of the flue pipe is communicated between the desulfurization device and the chimney.
Preferably, the flue gas recirculation mechanism further comprises a dust removal device, an inlet of the dust removal device is communicated with an inlet of the tail flue, and an outlet of the dust removal device is communicated with an inlet of the desulfurization device.
Compared with the prior art, the utility model has the beneficial effects that:
the technical proposal provides a circulating fluidized bed boiler wide load rapid peak regulation system,
1. the solid particle quantity entering the hearth is controlled through the ash storage mechanism so as to finish quick lifting load peak regulation of the unit; the ash storage mechanism is utilized to heat the air sent into the air preheater by the air supply mechanism, so that on one hand, the temperature of the cold end of the air preheater is increased, the risks of blockage and corrosion of the air preheater are relieved, and on the other hand, the running stability and economy of the unit are improved;
2. the first branch pipe and the second branch pipe are additionally arranged on the secondary air machine, so that the output of the secondary air machine is increased, and the stall problem of the secondary air machine running under low flow is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of the overall structure of a rapid peaking system according to an embodiment of the present utility model.
Reference numerals illustrate:
1. a furnace; 11. an air chamber; 12. a hot primary air duct; 2. a cyclone separator; 21. a feed back valve; 22. a feed back pipe; 23. a flue gas outlet; 24. a flue gas inlet; 3. a tail flue; 4. an air preheater; 41. a cold end; 42. a hot end;
5. an ash cooler; 51. an ash bin; 52. pneumatic conveying equipment; 53. a first flapper door; 54. a second flapper door;
6. a secondary air blower; 61. a secondary air duct; 62. a secondary branch pipe; 63. a third flapper door; 64. a fourth flapper door;
7. a primary air blower; 71. a primary air duct;
8. a recirculation fan; 81. a condensing device; 82. a flue pipe; 83. a fifth flapper door; 84. a desulfurizing device; 85. a chimney; 86. dust removal equipment.
Detailed Description
The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
The embodiment of the utility model provides a circulating fluidized bed boiler wide-load rapid peak regulation system, which is shown in figure 1 and comprises the following components: the device comprises a hearth 1, a cyclone separator 2, a tail flue 3, an air preheater 4, an ash storage mechanism and an air supply assembly; the cyclone separator 2 is used for reducing dust discharged by the hearth 1, and the cyclone separator 2 comprises a smoke inlet 24, a smoke outlet 23 and a return valve 21; specifically, the outlet of the hearth 1 is communicated with the flue gas inlet 24 of the cyclone separator 2, the flue gas outlet 23 of the cyclone separator 2 is communicated with the tail flue 3, and the feed back valve 21 of the cyclone separator 2 is communicated with the hearth 1 through the feed back pipe 22 for separating gas from fixed particles of the flue gas discharged from the hearth 1; the air preheater 4 is arranged in the tail flue 3 and is used for conducting heat carried in smoke in the tail flue 3.
The ash storage mechanism comprises an ash cooler 5 and an ash bin 51; the ash cooler 5 is used for cooling the fixed particles separated in the cyclone separator 2, the ash bin 51 is used for storing the solid particles cooled by the ash cooler 5 so as to be conveyed to the hearth 1 again for continuous combustion, and the adjustment of the amount of the solid particles entering the hearth 1 can be realized; the inlet of the ash bin 51 is communicated with the feed back valve 21, the outlet of the ash bin 51 is communicated with the feed back pipe 22, the ash cooler 5 is communicated between the ash bin 51 and the feed back valve 21, and the amount of solid particles entering the hearth 1 is regulated and controlled through the ash bin 51 so as to realize the purpose of quick deep peak regulation of a unit; specifically, the air supply assembly comprises a secondary air blower 6, a primary air blower 7, a secondary air pipe 61, a primary air pipe 71 and a secondary branch pipe 62; the air preheater 4 comprises a cold end 41 and a hot end 42, and the hot end 42 is communicated with an air distribution plate of the hearth 1; the inlet of the secondary air blower 6 is communicated with the outside air, and the outlet of the secondary air blower 6 is communicated with the cold end 41 of the air preheater 4 through a secondary air pipe 61, so that the extracted secondary air is sent into the air preheater 4 for heating and is sent into the hearth 1 from the hot end 42 of the air preheater 4; the inlet of the secondary branch pipe 62 is communicated with the secondary air pipe 61 between the outlet of the secondary air machine 6 and the cold end 41, the ash cooler 5 is arranged on the secondary branch pipe 62, and solid particles stored in the ash cooler 5 are utilized to exchange heat with part of secondary air extracted by the secondary air machine 6 in the secondary branch pipe 62, the inlet of the primary air machine 7 is communicated with external air and the outlet of the secondary branch pipe 62, and the outlet of the primary air machine 7 is communicated with the cold end 41 of the air preheater 4 through a primary air pipe 71 and is used for mixing the secondary air after heat exchange with primary air extracted by the primary air machine 7, so that the primary air extracted by the primary air machine 7 is heated up and is further heated by the air preheater 4, and then the hot end 42 of the air preheater 4 is fed into the hearth 1.
That is, the flue gas in the hearth 1 is discharged from the outlet of the hearth 1, enters the cyclone separator 2 from the flue gas inlet 24 of the cyclone separator 2, and is separated from the solid in the cyclone separator 2, and then the separated gas is discharged from the flue gas outlet 23 of the cyclone separator 2 into the tail flue 3; part of solid particles separated from the flue gas are returned to the hearth 1 through a feed back pipe 22 by a feed back valve 21 to continue burning, and the other part of solid particles enter the ash cooler 5 under the action of gravity, at the moment, the secondary air blower 6 is started, and part of secondary air enters the cold end 41 of the air preheater 4 through a secondary air pipe 61 by the secondary air blower 6, exchanges heat by the air preheater 4 in the tail flue 3, and is then sent into the hearth 1 through the hot end 42 of the air preheater 4; and the other part of secondary air flows into the secondary branch pipe 62 through the secondary air pipe 61 by the secondary air blower 6, exchanges heat with solid particles in the ash cooler 5, and stores the solid particles subjected to heat exchange into the ash bin 51; the secondary air after heat exchange by the ash cooler 5 flows into the primary air pipe 71 to be mixed with the primary air extracted by the primary air fan 7, flows into the air preheater 4 from the cold end 41 for further heating, and finally is sent into the hearth 1 from the hot end 42 of the air preheater 4.
In order to facilitate the reuse of the solid particles stored in the ash bin 51, the ash storage mechanism further comprises a pneumatic conveying device 52, wherein an inlet of the pneumatic conveying device 52 is communicated with an outlet of the ash bin 51, and an outlet of the pneumatic conveying device 52 is communicated with the feed back pipe 22; when the pneumatic conveying device 52 is started, the solid particles in the ash bin 51 can enter the hearth 1 again through the feed back pipe 22 for combustion.
In order to facilitate the control of the particles entering the furnace 1, the ash storage mechanism further comprises a first baffle door 53, wherein the first baffle door 53 is arranged between the feed back valve 21 and the ash cooler 5 and is used for controlling the amount of solid particles discharged at the feed back valve 21; further, the first barrier door 53 is opened when the unit is under load, and closed when the unit is under load; and when the first baffle door 53 is opened, solid particles fall into the ash cooler 5 to be cooled, and fall into the ash bin 51 after being cooled; in order to prevent the outflow of solid particles stored in the ash bin 51 in case of failure of the pneumatic conveying means 52, the ash storage mechanism further comprises a second shutter door 54, the second shutter door 54 being arranged between the ash bin 51 and said pneumatic conveying means 52.
Specifically, in order to facilitate controlling the air volumes of the primary air blower 7 and the secondary air blower 6 entering the air preheater 4, the air supply assembly further includes a third baffle door 63 and a fourth baffle door 64; the third baffle door 63 and the fourth baffle door 64 are both communicated with the secondary branch pipe 62, the third baffle door 63 is positioned between the ash cooler 5 and the outlet of the secondary air blower 6, the fourth baffle door 64 is positioned between the ash cooler 5 and the outlet of the primary air blower 7, when the third baffle door 63 and the fourth baffle door 64 are opened, part of the secondary air drawn by the secondary air blower 6 enters the cold end 41 of the air preheater 4, part of the secondary air enters the secondary branch pipe 62 to exchange heat with solid particles in the ash cooler 5, and then the secondary air after heat exchange flows into the primary air pipe 71 through the secondary branch pipe 62 to be mixed with the primary air drawn by the primary air blower 7, and finally enters the cold end 41 of the air preheater 4 to be further heated; when the third barrier door 63 and the fourth barrier door 64 are closed, the secondary branch pipe 62 is not communicated, the secondary air extracted by the secondary air fan 6 entirely enters the cold end 41 of the air preheater 4, and the primary air in the primary air duct 71 is not mixed with the secondary air.
In order to ensure that the fluidization air quantity is not lower than the minimum fluidization air quantity, the system also comprises a flue gas recirculation mechanism, and the flue gas recirculation mechanism comprises a flue gas recirculation fan 8, a condensation device 81 and a flue gas pipe 82; specifically, the inlet of the flue gas pipe 82 is communicated with the outlet of the tail flue 3, and the outlet of the flue gas pipe 82 is communicated with the inlet of the primary fan 7; the flue gas recirculation fan 8 and the condensing equipment 81 are sequentially communicated with the flue gas pipe 82; namely, after condensing and dehydrating the flue gas in the tail flue 3 through a condensing device 81, boosting the pressure through a flue gas recirculation fan 8, then sending the flue gas into a primary air pipe 71, mixing the flue gas with primary air extracted by the primary air pipe 7 and secondary air subjected to heat exchange to improve the air temperature, and sending the flue gas into the air preheater 4 through a cold end 41 for further heating.
Preferably, in order to facilitate the control of the flue gas output by the flue gas duct 82, the flue gas recirculation mechanism further comprises a fifth baffle door 83, and the fifth baffle door 83 is arranged on the flue gas duct 82, and the fifth baffle door 83 is located between the condensation device 81 and the outlet of the back flue 3; namely, the fifth baffle door 83 is opened, the flue gas pipe 82 is communicated with the tail flue 3, and part of flue gas can be introduced into the flue gas pipe 82 through the tail flue 3; when the fifth damper door 83 is closed, the flue gas pipe 82 is blocked from the back flue 3.
Further, in order to achieve the purpose of purifying the flue gas, the flue gas recirculation mechanism further comprises a desulfurization device 84 and a chimney 85, wherein an inlet of the desulfurization device 84 is communicated with an outlet of the tail flue 3, and an outlet of the desulfurization device 84 is communicated with the chimney 85; and in order to reduce the sulfur content of the flue gas entering the primary air duct 71, the inlet of the flue gas duct 82 is communicated between the desulfurization device 84 and the chimney 85; that is, the flue gas entering the flue gas duct 82 is flue gas treated by the desulfurization device 84.
Further, for the desulfurization effect of the flue gas, the flue gas recirculation mechanism further comprises a dust removal device 86, wherein an inlet of the dust removal device 86 is communicated with an inlet of the tail flue 3, and an outlet of the dust removal device 86 is communicated with an inlet of the desulfurization device 84; for further reducing dust in the flue gas.
Specifically, the system also comprises an air chamber 11, wherein the air chamber 11 is used for concentrating the mixed flue gas and primary air in an isobaric air box and then guiding the mixed flue gas and primary air into the hearth 1; that is, the primary air chamber 11 communicates with the air distribution plate of the furnace 1, and the hot end 42 of the air preheater 4 communicates with the air chamber 11 through the hot primary air duct 12.
The actual operation process comprises the following steps:
when the unit depth peak regulation and load reduction are carried out, the solid particle quantity in the hearth 1 is required to be reduced so as to reduce the intensity of convection heat exchange in the furnace and achieve the purpose of rapid peak regulation; the flue gas recirculation fan 8 is started, the fifth damper door 83 is opened, the first damper door 53 is opened, the third damper door 63 is opened, and the fourth damper door 64 is opened. The solid particles separated from the feed back valve 21 enter the ash cooler 5 through the ash conveying pipe by gravity, and are discharged into the ash bin 51 through the ash conveying pipe after heat exchange with secondary air is completed. Specifically, the secondary branch pipe 62 is led out from the secondary air pipe 61 between the outlet of the secondary air fan 6 and the cold end 41, and is heated by the ash cooler 5 and then led into the primary air pipe 71 at the inlet of the primary air fan 7; the flue gas passing through the desulfurization device 84 enters the condensation device 81 through the flue gas pipe 82, then enters the primary air pipe 71 at the inlet of the primary air fan 7 through the flue gas recirculation fan 8, then enters the air preheater 4 from the cold end 41 for further heating after the primary air, the secondary air heated by the ash cooler 5 and the flue gas are mixed, then enters the air chamber 11 through the hot end 42 of the air preheater 4 and the hot primary air channel 12, and then enters the boiler furnace 1; the amount of smoke is adjusted by adjusting the opening of the fifth shutter door 83; the introduced flue gas not only ensures sufficient fluidization air quantity, but also enables the dense-phase zone to be burnt anaerobically, thereby greatly reducing the generation amount of nitrogen oxides, ensuring that the unit can finish rapid load lifting and avoiding the risk of blocking the air preheater 4.
When the unit depth peak regulation and load rising are needed, the solid particle amount in the hearth 1 is increased, the flue gas recirculation fan 8 is closed, the fifth baffle door 83 is closed, a baffle door is closed, the cold third baffle door 63 is closed, the fourth baffle door 64 is closed, the second baffle door 54 is opened, the pneumatic conveying equipment 52 is opened, the solid particles stored in the ash bin 51 are sent into the feed back pipe 22, and then the solid particles enter the hearth 1 from the feed back pipe 22.
The above embodiments are only preferred embodiments of the present utility model, and the scope of the present utility model is not limited thereto, but any insubstantial changes and substitutions made by those skilled in the art on the basis of the present utility model are intended to be within the scope of the present utility model as claimed.
Claims (8)
1. A circulating fluidized bed boiler wide load rapid peaking system, comprising: the device comprises a hearth, a cyclone separator, a tail flue, an air preheater, an ash storage mechanism and an air supply assembly; the cyclone separator comprises a flue gas inlet, a flue gas outlet and a return valve, the outlet of the hearth is communicated with the flue gas inlet, the flue gas outlet is communicated with the tail flue, the return valve is communicated with the hearth through a return pipe, the air preheater is arranged in the tail flue, the air preheater comprises a cold end and a hot end, and the hot end is communicated with an air distribution plate of the hearth;
the ash storage mechanism comprises an ash cooler and an ash bin; the inlet of the ash bin is communicated with the feed back valve, the outlet of the ash bin is communicated with the feed back pipe, and the ash cooler is communicated between the ash bin and the feed back valve;
the air supply assembly comprises a secondary air machine, a primary air machine, a secondary air pipe, a primary air pipe and a secondary branch pipe, wherein an inlet of the secondary air machine is communicated with outside air, an outlet of the secondary air machine is communicated with the cold end through the secondary air pipe, an inlet of the secondary branch pipe is communicated with the secondary air pipe between an outlet of the secondary air machine and the cold end, an ash cooler is arranged on the secondary branch pipe and heats the secondary air in the secondary branch pipe, an inlet of the primary air machine is communicated with an outlet of the secondary branch pipe and the outside air, and an outlet of the primary air machine is communicated with the cold end through the primary air pipe.
2. The rapid peaking system of claim 1, wherein the ash storage mechanism further comprises a pneumatic conveying device, an inlet of the pneumatic conveying device being in communication with an outlet of the ash bin, an outlet of the pneumatic conveying device being in communication with the return conduit.
3. The rapid peaking system of claim 2, wherein the ash storage mechanism further comprises a first flapper door disposed between the feed back valve and the ash cooler and a second flapper door disposed between the ash bin and the pneumatic conveying device.
4. The rapid peaking system of claim 1, wherein the air supply assembly further comprises a third flapper door and a fourth flapper door,
the third baffle door and the fourth baffle door are communicated with the secondary branch pipe, the third baffle door is positioned between the ash cooler and the outlet of the secondary fan, and the fourth baffle door is positioned between the ash cooler and the outlet of the primary fan.
5. The rapid peaking system of claim 1, further comprising a flue gas recirculation mechanism comprising a flue gas recirculation fan, a condensing device, and a flue gas duct,
the inlet of the flue gas pipe is communicated with the outlet of the tail flue, and the outlet of the flue gas pipe is communicated with the inlet of the primary fan; the flue gas recirculation fan and the condensing equipment are sequentially communicated with the flue gas pipe.
6. The rapid peaking system of claim 5, wherein the flue gas recirculation mechanism further comprises a fifth baffle door disposed on the flue gas duct, and the fifth baffle door is located between the condensing apparatus and the back flue outlet.
7. The rapid peaking system of claim 5, wherein the flue gas recirculation mechanism further comprises a desulfurization device and a chimney, an inlet of the desulfurization device is in communication with an outlet of the back flue, an outlet of the desulfurization device is in communication with the chimney, and an inlet of the flue gas tube is in communication between the desulfurization device and the chimney.
8. The rapid peaking system of claim 7, wherein the flue gas recirculation mechanism further comprises a dust removal device, an inlet of the dust removal device being in communication with an inlet of the back flue, an outlet of the dust removal device being in communication with an inlet of the desulfurization device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321167037.4U CN219588933U (en) | 2023-05-12 | 2023-05-12 | Wide-load rapid peak regulating system of circulating fluidized bed boiler |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321167037.4U CN219588933U (en) | 2023-05-12 | 2023-05-12 | Wide-load rapid peak regulating system of circulating fluidized bed boiler |
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| CN219588933U true CN219588933U (en) | 2023-08-25 |
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| CN202321167037.4U Active CN219588933U (en) | 2023-05-12 | 2023-05-12 | Wide-load rapid peak regulating system of circulating fluidized bed boiler |
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