CN117167727A - A peak-shaving coupling system for circulating fluidized bed boilers - Google Patents
A peak-shaving coupling system for circulating fluidized bed boilers Download PDFInfo
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- CN117167727A CN117167727A CN202311122859.5A CN202311122859A CN117167727A CN 117167727 A CN117167727 A CN 117167727A CN 202311122859 A CN202311122859 A CN 202311122859A CN 117167727 A CN117167727 A CN 117167727A
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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
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- Fluidized-Bed Combustion And Resonant Combustion (AREA)
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Abstract
本发明涉及锅炉技术领域，具体涉及一种循环流化床锅炉调峰耦合系统，包括：炉膛，汽冷式分离器的入口烟道与所述炉膛的出烟口连通，所述汽冷式分离器的回料侧与所述炉膛的内部连通，所述汽冷式分离器的出口烟道与尾部烟道连通；空气预热器设置在尾部烟道内。通过设置第一冷灰器，汽冷式分离器中的部分返料进入到第一冷灰器内部后，汽冷式分离器的进料口至出料口可看作为热源侧，第一冷灰器的进气口至出气口可看作为吸热侧，热量由返料转移到独立分仓区域内并对独立分仓区域内的气体加热。独立分仓区域内被加热的气体又可以对通过独立分仓区域内的蓄热元件进行加热和清吹，使得硫酸氢铵从蓄热元件上脱落。
The invention relates to the technical field of boilers, and specifically to a circulating fluidized bed boiler peak-shaving coupling system, which includes: a furnace, an inlet flue of a steam-cooled separator connected to a smoke outlet of the furnace, and the steam-cooled separator The return side of the separator is connected to the inside of the furnace, and the outlet flue of the steam-cooled separator is connected to the tail flue; the air preheater is arranged in the tail flue . By setting up the first ash cooler, after part of the return material in the steam-cooled separator enters the first ash cooler, the inlet to the outlet of the steam-cooled separator can be regarded as the heat source side, and the first cooler The air inlet to the air outlet of the ash container can be regarded as the heat-absorbing side. The heat is transferred from the return material to the independent bin area and heats the gas in the independent bin area. The heated gas in the independent compartment area can heat and blow out the heat storage elements passing through the independent compartment area, causing the ammonium bisulfate to fall off the heat storage elements.
Description
Technical Field
The invention relates to the technical field of boilers, in particular to a peak regulation coupling system of a circulating fluidized bed boiler.
Background
The circulating fluidized bed generator set is used as a clean and efficient coal motor set, and can promote the structural optimization and upgrading of the energy industry. Wherein, the circulating fluidized bed boiler is an important component of the circulating fluidized bed generator set.
However, when the circulating fluidized bed boiler is operated under a low load, ammonium bisulfate generated in the circulating fluidized bed boiler is easily deposited on the air preheater due to the low temperature of the air inlet of the air preheater, which is liable to cause clogging of the air preheater. The existing mode is to shut down the circulating fluidized bed boiler and cool down, then clear up the air preheater, can be to reducing the generating efficiency of circulating fluidized bed generator set with this kind of mode, increase time cost.
Disclosure of Invention
Therefore, the invention aims to overcome the technical problems required in the prior art, and thus provides a peak shaving coupling system of a circulating fluidized bed boiler.
The invention provides a peak regulation coupling system of a circulating fluidized bed boiler, which comprises the following components:
a furnace;
the inlet flue of the steam-cooled separator is communicated with the smoke outlet of the hearth, the feed back side of the steam-cooled separator is communicated with the interior of the hearth, and the outlet flue of the steam-cooled separator is communicated with the tail flue;
the air preheater is arranged in the tail flue;
the heat source side of the first heat exchange assembly is communicated with the feed back side of the steam-cooled separator, and the heat absorption side of the first heat exchange assembly is communicated with the air preheater through a circulating pipeline.
Further, the air preheater comprises a gas sub-bin area, a primary air sub-bin area, a secondary air sub-bin area and an independent sub-bin area, and the heat storage element on the air preheater rotates in a mode of passing through the gas sub-bin area, the primary air sub-bin area, the secondary air sub-bin area and the independent sub-bin area in sequence.
Further, one end of the gas separation area is communicated with the tail flue, and the other end of the gas separation area is communicated with an air outlet of the tail flue; one end of the primary air separating bin area is communicated with an air outlet of the primary air blower, one end of the secondary air separating bin area is communicated with an air outlet of the secondary air blower, the other end of the primary air separating bin area and the other end of the secondary air separating bin area are respectively communicated with the hearth through additional pipelines, and the independent separating bin area is communicated with the first heat exchange assembly.
Further, the air inlets of the primary air blower are communicated with the outside, the two secondary air blowers are arranged in parallel, and the air inlets of the secondary air blowers are communicated with the outside.
Further, the first heat exchange assembly includes:
the air inlet of the first ash cooler is communicated with one end of the independent bin area, and the air outlet of the first ash cooler is communicated with the other end of the independent bin area.
Further, the first heat exchange assembly further comprises:
the second separator is arranged on the circulating pipeline; the air inlet of the second separator is communicated with one end of the independent bin separation area, and the air outlet of the second separator is communicated with the air inlet of the first ash cooler;
the circulating fan is arranged on the circulating pipeline; the air inlet of the circulating fan is communicated with the air outlet of the second separator, and the air outlet of the circulating fan is communicated with the air inlet of the first ash cooler.
Further, the method further comprises the following steps:
the heat source side of the second heat exchange assembly is communicated with the heat source side of the first heat exchange assembly, and the heat absorption side of the second heat exchange assembly is communicated with the primary air blower and the secondary air blower in series through pipelines.
Further, the second heat exchange assembly includes:
the feeding port of the second ash cooler is communicated with the discharging port of the first ash cooler, the air inlet of the second ash cooler is communicated with the air outlet of the secondary air fan, and the air outlet of the second ash cooler is communicated with the air inlet of the primary air fan.
Further, an ash bin is arranged at the discharge hole of the second ash cooler, and the ash bin is suitable for collecting returned materials in the second ash cooler.
Furthermore, a dust remover is communicated with the air outlet of the tail flue.
The technical scheme of the invention has the following advantages:
according to the peak regulation coupling system of the circulating fluidized bed boiler, the first ash cooler is arranged, after part of returned materials in the steam-cooled separator enter the first ash cooler, the inlet to the outlet of the steam-cooled separator can be regarded as a heat source side, the inlet to the outlet of the first ash cooler can be regarded as a heat absorption side, and heat is transferred from the returned materials to the independent bin areas and heats the gas in the independent bin areas. After the heat storage element further exchanges heat through the secondary air separation area, the temperature of the heat storage element is further reduced, ammonium bisulfate remained in the gas of the heat storage element is attached to the heat storage element in a cooling manner, the heat storage element is easy to be blocked, and the heated gas in the independent separation area can heat and clean the heat storage element passing through the independent separation area, so that the ammonium bisulfate falls off from the heat storage element.
Drawings
In order to more clearly illustrate the embodiments of the present invention 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 invention, 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 structure of the present invention;
FIG. 2 is a schematic diagram of an air preheater according to the present invention.
Reference numerals illustrate;
1. a furnace; 2. a steam-cooled separator; 3. a tail flue; 4. a primary air blower; 5. a secondary air blower; 6. an ash bin; 7. a dust remover; 10. an air preheater; 11. a gas binning area; 12. a primary air dividing area; 13. secondary air separating areas; 14. independent sub-bin areas; 20. a first heat exchange assembly; 21. a first ash cooler; 22. a second separator; 23. a circulating fan; 30. a second heat exchange assembly; 31. and a second ash cooler.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, 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 invention 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 invention. 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 invention, 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 invention will be understood in specific cases by those of ordinary skill in the art.
In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
Examples
An embodiment of a peak shaver coupling system for a circulating fluidized bed boiler, as shown in fig. 1 to 2, wherein fig. 1 further shows a moving direction of returned material or gas, the peak shaver coupling system for a circulating fluidized bed boiler comprises: the device comprises a hearth 1, an air-cooled separator 2, an air preheater 10 and a first heat exchange assembly 20, wherein an inlet flue of the air-cooled separator 2 is communicated with a smoke outlet of the hearth 1, a feed back side of the air-cooled separator 2 is communicated with the interior of the hearth 1, and an outlet flue of the air-cooled separator 2 is communicated with a tail flue 3; the air preheater 10 is arranged in the tail flue 3; the heat source side of the first heat exchange assembly 20 is communicated with the feed back side of the steam-cooled separator 2, and the heat absorption side of the first heat exchange assembly 20 is communicated with the air preheater 10 through a circulating pipeline.
Wherein the air-cooled separator 2 is adapted to separate flue gas entering the air-cooled separator 2 from the furnace 1, and the obtained particulate dust is returned to the furnace 1 in the form of return material and through the return side of the air-cooled separator 2, and the obtained gas enters the back flue 3.
Specifically, in the embodiment of the present invention, the first heat exchange assembly 20 may be a heat exchanger respectively connected to the air-cooled separator 2 and the air preheater 10, where the heat of the air-cooled separator 2 heats the working medium in the heat exchanger, and the heated working medium heats the air preheater 10 through a circulation pipeline. Of course, the present embodiment is merely illustrative of a specific embodiment of the first heat exchange assembly 20, but is not limited thereto, and the same technical effects can be achieved.
Further, the air preheater 10 includes a gas compartment area 11, a primary air compartment area 12, a secondary air compartment area 13, and an independent compartment area 14, and the heat storage element on the air preheater 10 rotates in such a manner as to pass through the gas compartment area 11, the primary air compartment area 12, the secondary air compartment area 13, and the independent compartment area 14 in sequence. Wherein fig. 2 also shows the swirling direction of the heat storage element.
The air dividing area 11, the primary air dividing area 12, the secondary air dividing area 13 and the independent dividing area 14 are four dividing areas fixed relative to the shell of the air preheater 10, and an opening for the heat storage element to pass through is reserved on the side wall of each dividing area, but all the dividing areas are not communicated with each other all the time.
Further, one end of the gas separation area 11 is communicated with the tail flue 3, and the other end of the gas separation area 11 is communicated with an air outlet of the tail flue 3; one end of the primary air separation area 12 is communicated with an air outlet of the primary air blower 4, one end of the secondary air separation area 13 is communicated with an air outlet of the secondary air blower 5, the other end of the primary air separation area 12 and the other end of the secondary air separation area 13 are respectively communicated with the hearth 1 through additional pipelines, and the independent separation area 14 is communicated with the first heat exchange assembly 20.
It should be noted that, the primary air blower 4 and the secondary air blower 5 are adapted to provide air for the air preheater 10, and the gas compartment area 11 is heated by the gas in the tail flue 3 and then exchanges heat with the primary air compartment area 12 and the secondary air compartment area 13, where the primary air compartment area 12 is communicated with the bottom end of the furnace 1 through an additional pipe, and the secondary air compartment area 13 is located at a position above the furnace 1 through a communication position between the additional pipe and the furnace 1. Because the primary air separation zone 12 performs heat exchange before the gas separation zone 11, the temperature of the gas at the outlet of the primary air separation zone 12 is higher than that of the gas at the outlet of the secondary air separation zone 13, and the gas at the outlet of the primary air separation zone 12 can be used for primary heating of reactive substances in the furnace 1, such as combustion coal, so that the combustion coal is combusted, and meanwhile, under the action of the gas at the outlet of the primary air separation zone 12, the combustion coal moves upwards to the communication position of the secondary air separation zone 13 with the furnace 1 through an additional pipeline for secondary combustion.
Further, the air inlets of the primary air blower 4 are communicated with the outside, the two secondary air blowers 5 are arranged in parallel, and the air inlets of the secondary air blowers 5 are communicated with the outside.
When the load of the unit is too low, the total air quantity of the circulating fluidized bed boiler only needs to ensure that the fluidization air quantity is not lower than the minimum fluidization air quantity, so that the total air quantity provided by the primary air blower 4 and the secondary air blower 5 to the boiler is smaller, the occupation of the secondary air quantity provided by the secondary air blower 5 is smaller, and in order to run safely, the secondary air blower 5 is generally arranged into two secondary air blowers which are connected in parallel, but the sufficient air quantity of a single secondary air blower 5 needs to be ensured, and the problem of stall cannot occur.
Further, the first heat exchange assembly 20 includes:
the feed inlet of the first ash cooler 21 is communicated with the steam-cooled separator 2, the air inlet of the first ash cooler 21 is communicated with one end of the independent bin area 14, and the air outlet of the first ash cooler 21 is communicated with the other end of the independent bin area 14.
A stop valve can be arranged between the air-cooled separator 2 and the first ash cooler 21, so that part of returned materials in the air-cooled separator 2 can be controlled to enter the first ash cooler 21, the inlet to the outlet of the air-cooled separator 2 can be regarded as a heat source side after the returned materials enter the first ash cooler 21, the inlet to the outlet of the first ash cooler 21 can be regarded as a heat absorption side, and heat is transferred from the returned materials to the independent bin areas 14 and the air in the independent bin areas 14 is heated. After the heat storage element further exchanges heat through the secondary air sub-bin area 13, the temperature of the heat storage element is further reduced, ammonium bisulfate remained in the gas of the heat storage element is attached to the heat storage element when the ammonium bisulfate is cooled, so that the heat storage element is easy to be blocked, and the heated gas in the independent sub-bin area 14 can heat and clean the heat storage element passing through the independent sub-bin area 14, so that the ammonium bisulfate falls off from the heat storage element. Part of the returned material in the air-cooled separator 2 enters the first ash cooler 21, so that the load reduction rate of the hearth 1 can be increased.
Further, the first heat exchange assembly 20 further includes:
a second separator 22 disposed on the circulation line; the air inlet of the second separator 22 is communicated with one end of the independent sub-bin area 14, and the air outlet of the second separator 22 is communicated with the air inlet of the first ash cooler 21;
the second separator 22 may be a cyclone separator, but the present embodiment is not limited thereto. The second separator 22 can remove dust from the gas in the independent separation area 14, so that the fallen ammonium bisulfate can be discharged through the second separator 22, a stop valve for controlling the gas amount in the second separator 22 can be arranged between the independent separation area 14 and the second separator 22, and a regulating valve can be arranged between the first ash cooler 21 and the independent separation area 14.
A circulation fan 23 disposed on the circulation line; the air inlet of the circulating fan 23 is communicated with the air outlet of the second separator 22, and the air outlet of the circulating fan 23 is communicated with the air inlet of the first ash cooler 21.
The circulating fan 23 can accelerate the flow of the gas in the circulating pipeline, so that the falling speed and the discharging speed of the ammonium bisulfate can be increased.
Further, the method further comprises the following steps:
and the heat source side of the second heat exchange assembly 30 is communicated with the heat source side of the first heat exchange assembly 20, and the heat absorption side of the second heat exchange assembly 30 is communicated with the primary air blower 4 and the secondary air blower 5 in series through pipelines.
The second heat exchange group may be a heat exchanger respectively communicated with the first ash cooler 21 and the air preheater 10, wherein the heat of the first ash cooler 21 heats the working medium in the heat exchanger, and the heated working medium heats the air preheater 10 through a pipeline. Of course, the present embodiment is merely illustrative of a specific embodiment of the second heat exchange assembly 30, but is not limited thereto, and the same technical effects can be achieved.
Further, the second heat exchange assembly 30 includes:
the second ash cooler 31, the feed inlet of the second ash cooler 31 is communicated with the discharge outlet of the first ash cooler 21, the air inlet of the second ash cooler 31 is communicated with the air outlet of the secondary air fan 5, and the air outlet of the second ash cooler 31 is communicated with the air inlet of the primary air fan 4.
The air inlets of the primary air blower 4 are respectively communicated with the outside and the air outlets of the second ash cooler 31, the air outlets of the primary air blower 4 are communicated with the lower end part of the primary air separating bin area 12, the secondary air blowers 5 are two and are arranged in parallel, the air inlets of the secondary air blowers 5 are communicated with the outside, and the air outlets of the secondary air blowers 5 are respectively communicated with the lower end part of the secondary air separating bin area 13 and the air inlet of the second ash cooler 31. The second ash cooler 31 is a heat source side, and the primary air compartment area 12 and the secondary air compartment area 13 are heat absorbing sides.
Part of air at the air outlet of the secondary air machine 5 enters the second ash cooler 31 under the action of the primary air machine 4 and exchanges heat with returned materials in the second ash cooler 31, so that the temperature of the air entering the second ash cooler 31 is raised, and the temperature of the returned materials in the second ash cooler 31 is lowered; the heated gas enters the lower end part of the primary air separating bin area 12 from the air inlet of the primary air fan 4 and heats and washes the heat storage element, so that sediment on the heat storage element is reduced, and meanwhile, the air inlet quantity at the air inlet of the secondary air fan 5 is increased under the action of the primary air fan 4, so that the secondary air fan 5 stably operates when the system runs under low load.
A stop valve for controlling the air quantity may be disposed between the secondary air blower 5 and the second ash cooler 31, and a stop valve may also be disposed between the second ash cooler 31 and the primary air separation area 12.
Further, an ash bin 6 is arranged at the discharge hole of the second ash cooler 31, and the ash bin 6 is suitable for collecting returned materials in the second ash cooler 31.
Wherein, the ash bin 6 can be obtained from the air-cooled separator 2 and is respectively collected by the returned materials of the first ash cooler 21 and the second ash cooler 31, and the returned materials in the ash bin 6 are cooled down twice.
Further, a dust remover 7 is communicated with the air outlet of the tail flue 3.
The dust remover 7 can remove dust from the gas after heat exchange in the gas sub-bin area 11, and the dust remover 7 can be connected with next process equipment, so that the influence of impurities in the gas on the next process can be prevented.
In the actual operation process:
when the unit depth peak regulation reduces load, firstly, a circulating fan is started, then a stop valve between the independent bin area 14 and the second separator 22, a regulating valve between the first ash cooler 21 and the independent bin area 14, a stop valve between the secondary fan 5 and the second ash cooler 31 and a stop valve between the second ash cooler 31 and the primary air bin area 12 are sequentially started, after normal operation of the system is ensured, a stop valve between the air-cooled separator 2 and the first ash cooler 21 is opened, material returning is extracted, and the material returning after heat release is stored in the ash bin 83.
When the unit depth peak regulation and load rising are carried out, the stop valve between the air-cooled separator 2 and the first ash cooler 21 is firstly closed, and then the stop valve between the independent bin area 14 and the second separator 22, the regulating valve between the first ash cooler 21 and the independent bin area 14, the stop valve between the secondary air blower 5 and the second ash cooler 31 and the stop valve between the second ash cooler 31 and the primary air bin area 12 are sequentially closed.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.
Claims (10)
1. A circulating fluidized bed boiler peak shaving coupling system, comprising:
a hearth (1);
the air-cooled type separator (2), an inlet flue of the air-cooled type separator (2) is communicated with a smoke outlet of the hearth (1), a feed back side of the air-cooled type separator (2) is communicated with the inside of the hearth (1), and an outlet flue of the air-cooled type separator (2) is communicated with a tail flue (3);
an air preheater (10) arranged in the tail flue (3);
the heat source side of the first heat exchange assembly (20) is communicated with the feed back side of the steam-cooled separator (2), and the heat absorption side of the first heat exchange assembly (20) is communicated with the air preheater (10) through a circulating pipeline.
2. The peak shaving coupling system of a circulating fluidized bed boiler according to claim 1, wherein the air preheater (10) comprises a gas binning area (11), a primary air binning area (12), a secondary air binning area (13) and an independent binning area (14), and the heat storage element on the air preheater (10) rotates in a manner of passing through the gas binning area (11), the primary air binning area (12), the secondary air binning area (13) and the independent binning area (14) in sequence.
3. The peak shaving coupling system of the circulating fluidized bed boiler according to claim 2, wherein one end of the gas separation area (11) is communicated with the tail flue (3), and the other end of the gas separation area (11) is communicated with an air outlet of the tail flue (3); one end of the primary air separation area (12) is communicated with an air outlet of the primary air blower (4), one end of the secondary air separation area (13) is communicated with an air outlet of the secondary air blower (5), the other end of the primary air separation area (12) and the other end of the secondary air separation area (13) are respectively communicated with the hearth (1) through additional pipelines, and the independent separation area (14) is communicated with the first heat exchange assembly (20).
4. A peak shaving coupling system for a circulating fluidized bed boiler according to claim 3, wherein the air inlets of the primary air blower (4) are communicated with the outside, the secondary air blowers (5) are arranged in parallel, and the air inlets of the secondary air blowers (5) are communicated with the outside.
5. The circulating fluidized bed boiler peak shaver coupling system according to claim 3 or 4, wherein the first heat exchange assembly (20) comprises:
the device comprises a first ash cooler (21), wherein a feed inlet of the first ash cooler (21) is communicated with a steam-cooled separator (2), an air inlet of the first ash cooler (21) is communicated with one end of an independent bin separation area (14), and an air outlet of the first ash cooler (21) is communicated with the other end of the independent bin separation area (14).
6. The circulating fluidized bed boiler peaking coupling system of claim 5, wherein the first heat exchange assembly (20) further comprises:
a second separator (22) disposed on the circulation line; the air inlet of the second separator (22) is communicated with one end of the independent bin separating area (14), and the air outlet of the second separator (22) is communicated with the air inlet of the first ash cooler (21);
a circulation fan (23) arranged on the circulation pipeline; an air inlet of the circulating fan (23) is communicated with an air outlet of the second separator (22), and an air outlet of the circulating fan (23) is communicated with an air inlet of the first ash cooler (21).
7. The circulating fluidized bed boiler peaking coupling system of claim 6, further comprising:
the heat source side of the second heat exchange assembly (30) is communicated with the heat source side of the first heat exchange assembly (20), and the heat absorption side of the second heat exchange assembly (30) is used for communicating the primary fan (4) and the secondary fan (5) in series through a pipeline.
8. The circulating fluidized bed boiler peaking coupling system of claim 7, wherein the second heat exchange assembly (30) comprises:
the second ash cooler (31), the feed inlet of second ash cooler (31) with the discharge gate intercommunication of first ash cooler (21), the air inlet of second ash cooler (31) communicates with the gas outlet of overgrate air machine (5), the gas outlet of second ash cooler (31) communicates with the air inlet of primary air fan (4).
9. The peak shaving coupling system of a circulating fluidized bed boiler according to claim 8, wherein an ash bin (6) is arranged at the discharge port of the second ash cooler (31), the ash bin (6) being adapted to collect return material in the second ash cooler (31).
10. The peak shaving coupling system for the circulating fluidized bed boiler according to any one of claims 1 to 4, wherein a dust remover (7) is arranged at the air outlet of the tail flue (3) in a communicating manner.
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| CN202311122859.5A CN117167727A (en) | 2023-08-31 | 2023-08-31 | A peak-shaving coupling system for circulating fluidized bed boilers |
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| US20140374053A1 (en) * | 2013-06-21 | 2014-12-25 | Alstom Technology Ltd | Method of air preheating for combustion power plant and systems comprising the same |
| CN103604121A (en) * | 2013-11-29 | 2014-02-26 | 重庆大学 | Oil shale semicoke fluidized bed combustion system adopting triple-channel shunting control refeeder |
| CN208282145U (en) * | 2018-05-08 | 2018-12-25 | 陈珣 | A kind of station boiler rotary regenerative air preheater for preventing dust stratification from staiing deposition |
| CN110848729A (en) * | 2019-10-18 | 2020-02-28 | 华电电力科学研究院有限公司 | Rotary air preheater blockage prevention and control system and working method thereof |
| CN214370348U (en) * | 2021-03-09 | 2021-10-08 | 浙江兴核智能控制技术有限公司 | Clear away stifled grey system of preventing of rotation air preheater rotor surface deposition |
| CN219588932U (en) * | 2023-05-12 | 2023-08-25 | 华电电力科学研究院有限公司 | Anti-blocking system of fast peak-adjusting coupling air preheater of circulating fluidized bed generator set |
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