CN207599686U - Supercritical CO2Circulating fluidized bed boiler device - Google Patents
Supercritical CO2Circulating fluidized bed boiler device Download PDFInfo
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- CN207599686U CN207599686U CN201721350982.2U CN201721350982U CN207599686U CN 207599686 U CN207599686 U CN 207599686U CN 201721350982 U CN201721350982 U CN 201721350982U CN 207599686 U CN207599686 U CN 207599686U
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- 238000001816 cooling Methods 0.000 claims abstract description 13
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000003546 flue gas Substances 0.000 claims abstract description 6
- 230000001105 regulatory effect Effects 0.000 claims abstract description 5
- 239000003245 coal Substances 0.000 claims description 26
- 230000005611 electricity Effects 0.000 claims description 22
- 239000007789 gas Substances 0.000 claims description 13
- 230000001276 controlling effect Effects 0.000 claims description 6
- 235000019504 cigarettes Nutrition 0.000 claims 1
- 238000010248 power generation Methods 0.000 description 4
- 238000003303 reheating Methods 0.000 description 3
- 239000000843 powder Substances 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 210000000038 chest Anatomy 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
The utility model discloses a supercritical CO2The circulating fluidized bed boiler device comprises a hearth, a cyclone separator, a control regulating valve, an external bed heat exchanger and a high-temperature reheater; flue gas outlet and cyclone of hearthThe inlet of the cyclone separator is communicated, the bottom outlet of the cyclone separator is divided into two paths, one path is communicated with the air chamber of the hearth, the other path is communicated with the inlet of the external bed heat exchanger through a control regulating valve, the outlet of the external bed heat exchanger is communicated with the air chamber of the hearth, the high-temperature reheater is arranged in the external bed heat exchanger, the top outlet of the cyclone separator is communicated with the tail flue, and the device can effectively solve the problem of supercritical CO2The overtemperature of the pipe wall of the air cooling wall of the boiler.
Description
Technical field
The utility model belongs to supercritical CO2The efficient field of thermal power of Brayton cycle, is related to a kind of supercritical CO2It follows
Circulation fluidized bed boiler device.
Background technology
Compared with traditional vapor Rankine cycle electricity generation system, using supercritical CO2Brayton cycle electricity generation system is not only
With higher cycle efficieny, and the equipment of whole system takes up an area smaller.Research shows that supercritical CO2Brayton cycle system
System can reach the efficiency of 700 DEG C of conventional steam Rankine cycle in 620 DEG C of temperature ranges, not need to novel high temperature of redeveloping
Nickel-base alloy, thus with better application prospect.
The characteristics of China's energy natural endowment, determines that coal fired power generation is still the master of China's electric structure in following very long-term
Therefore body, develops big moulded coal base supercritical CO2Brayton cycle efficient power generation system meets the fundamental realities of the country in China very much, tool
There is very wide application prospect.
Supercritical CO2Boiler is big moulded coal base supercritical CO2Key equipment in Brayton cycle efficient power generation system it
One.For coal base supercritical CO2For Brayton cycle efficient power generation system, since backheat amount is big in whole system, Boiler Furnace
Thorax air cooling wall entrance Temperature of Working is usually all higher, up to 500 DEG C or so.If supercritical CO 2 boiler selects the coal of room combustion mode
Powder stove, due to coal-powder boiler ignition temperature height, reachable 1200~1400 DEG C, especially burner region, flue-gas temperature higher, so
The gentle cold wall entrance Temperature of Working of high flue-gas temperature is more likely to produce serious air cooling wall overtemperature of tube wall problem, so as to threaten
The normal safe operation of supercritical CO 2 boiler.
Utility model content
The purpose of the utility model is to overcome the shortcomings that the above-mentioned prior art, a kind of supercritical CO is provided2Recycle stream
Fluidized bed boiler device, the device can effectively solve the problem that supercritical CO2The problem of boiler air cooling wall overtemperature of tube wall.
In order to achieve the above objectives, supercritical CO described in the utility model2Circulating fluidized bed boiler device includes burner hearth, rotation
Wind separator controls to adjust valve, external bed heat and high temperature reheater；
The exhanst gas outlet of burner hearth is connected with the entrance of cyclone separator, and the outlet at bottom of cyclone separator is divided into two-way,
Wherein it is connected all the way with the air compartment of burner hearth, another way is connected through controlling to adjust valve with the entrance of external bed heat, external
The outlet of bed heat exchanger is connected with the air compartment of burner hearth, and high temperature reheater is arranged in external bed heat, cyclone separator
Top exit is connected with back-end ductwork.
The outlet of burner hearth is connected through separator inlet duct with the entrance of cyclone separator.
The outlet at bottom of cyclone separator is divided into two-way through separator standpipe, wherein all the way through high temperature refeed line and burner hearth
Air compartment is connected, and another way is connected through controlling to adjust valve with the entrance of external bed heat.
The top exit of cyclone separator is connected through separator exhaust exit pipe with back-end ductwork.
The outlet of external bed heat is connected through low temperature refeed line with the air compartment of burner hearth.
For coal base supercritical CO2In Brayton cycle electricity generation system, in back-end ductwork along the direction of flue gas circulation successively
It is provided with high temperature superheater, low-temperature reheater, gas cooler and air preheater；
Coal base supercritical CO2The cold side outlet of cryogenic regenerator is divided into two-way in Brayton cycle electricity generation system, wherein one
Road is connected with the entrance of gas cooler, another way and coal base supercritical CO2Brayton cycle electricity generation system high temperature backheat
The cold side input port of device is connected, the outlet of gas cooler and coal base supercritical CO2Brayton cycle electricity generation system high temperature is returned
The cold side outlet port of hot device is connected by the air cooling wall entrance of pipeline and Guan Houyu burner hearths；
The air cooling wall outlet of burner hearth is connected with the entrance of high temperature superheater, and the outlet of high temperature superheater and coal base are overcritical
CO2The entrance of Brayton cycle electricity generation system mesohigh turbine is connected；
Coal base supercritical CO2The outlet of Brayton cycle electricity generation system mesohigh turbine is connected with the entrance of low-temperature reheater
Logical, the outlet of low-temperature reheater is connected with the entrance of high temperature reheater, outlet and the coal base supercritical CO of high temperature reheater2Cloth
Low pressure turbine in thunder cycle generating system is connected.
The utility model has the advantages that：
Supercritical CO described in the utility model2Circulating fluidized bed boiler device is in concrete operations, cyclone separator bottom
The high-temp circulating ash of portion's output is divided into two-way, wherein in entering directly into the air compartment of burner hearth all the way, another way is through controlling to adjust valve
It enters in external bed heat, then carries out heat exchange with the working medium in high temperature reheater in external bed heat and be changed into low temperature
Then circulating ash is entered back into the air compartment of burner hearth, in practical operation, can make full use of burning in circulating fluid bed boiler temperature
The characteristics of low and bed temperature is uniform is spent, so as to effectively solve supercritical CO2Boiler air cooling wall overtemperature of tube wall problem, passes through control and regulation
Valve regulation enters the ratio of high-temp circulating ash and low-temperature circulating ash in burner hearth air compartment, it can be achieved that adjusting Fluidized Boiler Bed
The purpose of temperature and reheating temperature.
Description of the drawings
Fig. 1 is the structure diagram of the utility model.
Wherein, 1 it is air compartment, 2 be burner hearth, 3 be separator inlet duct, 4 be cyclone separator, 5 be separator standpipe, 6 is
High temperature refeed line, 7 in order to control regulating valve, 8 be external bed heat, 9 be high temperature reheater, 10 be low temperature refeed line, 11 for point
It is high temperature superheater from device exhaust exit pipe, 12,13 be low-temperature reheater, 14 be gas cooler, 15 is air preheater.
Specific embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings：
With reference to figure 1, supercritical CO described in the utility model2Circulating fluidized bed boiler device includes burner hearth 2, cyclonic separation
Device 4 controls to adjust valve 7, external bed heat 8 and high temperature reheater 9；The exhanst gas outlet of burner hearth 2 and the entrance of cyclone separator 4
It is connected, the outlet at bottom of cyclone separator 4 is divided into two-way, wherein being connected all the way with the air compartment of burner hearth 21, another way is through control
Regulating valve 7 processed is connected with the entrance of external bed heat 8, and the outlet of external bed heat 8 is connected with the air compartment 1 of burner hearth 2,
High temperature reheater 9 is arranged in external bed heat 8, and the top exit of cyclone separator 4 is connected with back-end ductwork.
The outlet of burner hearth 2 is connected through separator inlet duct 3 with the entrance of cyclone separator 4；The bottom of cyclone separator 4
Outlet divides through separator standpipe 5 for two-way, wherein being connected all the way through high temperature refeed line 6 with the air compartment 1 of burner hearth 2, another way passes through
Valve 7 is controlled to adjust with the entrance of external bed heat 8 to be connected；The top exit of cyclone separator 4 is through separator air exit
Pipe 11 is connected with back-end ductwork；The outlet of external bed heat 8 is connected through low temperature refeed line 10 with the air compartment 1 of burner hearth 2.
The utility model is used for coal base supercritical CO2In Brayton cycle electricity generation system, circulate in back-end ductwork along flue gas
Direction be disposed with high temperature superheater 12, low-temperature reheater 13, gas cooler 14 and air preheater 15；Coal base, which surpasses, to be faced
Boundary CO2The cold side outlet of cryogenic regenerator is divided into two-way in Brayton cycle electricity generation system, wherein all the way with gas cooler 14
Entrance be connected, another way and coal base supercritical CO2The cold side input port phase of Brayton cycle electricity generation system high temperature regenerator
Connection, the outlet of gas cooler 14 and coal base supercritical CO2The cold side of Brayton cycle electricity generation system high temperature regenerator goes out
Mouth is connected by the air cooling wall entrance of pipeline and Guan Houyu burner hearths 2；The air cooling wall outlet of burner hearth 2 and entering for high temperature superheater 12
Mouth is connected, outlet and the coal base supercritical CO of high temperature superheater 122The entrance of Brayton cycle electricity generation system mesohigh turbine
It is connected；Coal base supercritical CO2The outlet of Brayton cycle electricity generation system mesohigh turbine and the entrance phase of low-temperature reheater 13
Connection, the outlet of low-temperature reheater 13 are connected with the entrance of high temperature reheater 9, and the outlet of high temperature reheater 9 surpasses with coal base to be faced
Boundary CO2Low pressure turbine in Brayton cycle electricity generation system is connected.
The high-temp circulating ash of the bottom output of cyclone separator 4 divides through separator standpipe 5 for two-way, wherein, all the way through height
Warm refeed line 6 is entered in the air compartment 1 of burner hearth 2, and another way is entered through controlling to adjust valve 7 in external bed heat 8, Ran Hou
Heat exchange is carried out with the working medium in high temperature reheater 9 in external bed heat 8 and be changed into low-temperature circulating ash, in practical application, logical
It crosses the control and regulation adjusting of valve 7 and enters the 1 high temperature circulating ash of air compartment of burner hearth 2 and the ratio of low-temperature circulating ash, adjusted with reaching
The purpose of Circulating Fluidized Bed Temperature and reheating temperature, and then effectively solve supercritical CO2Boiler air cooling wall overtemperature of tube wall
Problem.
In addition, it is necessary to which explanation, circulating fluidized bed boiler have the characteristics that ignition temperature is low and bed temperature is uniform, surpass
Critical CO2Boiler can overcome the high generated pipe of air cooling wall entrance Temperature of Working well using circulating fluidized bed boiler pattern
Wall overtemperatute.The utility model realizes supercritical CO by setting external bed heat 82Circulating Fluidized Bed Temperature and
The adjusting of reheating temperature can arrange reheater, superheater according to actual conditions in external bed heat 8 or arrange reheater simultaneously
And superheater.In addition, the utility model can significantly improve the heat exchange of 8 high temperature circulating ash of external bed heat and heating surface
Coefficient, while high temperature reheater 9 is arranged in external bed heat 8 by the utility model, can substantially reduce high temperature reheater 9
Heat exchange area saves material cost.
Above-described specific embodiment, the purpose of this utility model, technical solution and advantageous effect have been carried out into
One step is described in detail, it should be understood that the foregoing is merely specific embodiment of the present utility model, is not used to limit
The utility model processed, within the spirit and principle of the utility model, any modification, equivalent substitution, improvement and etc. done,
It should be included within the scope of protection of this utility model.
Claims (6)
1. a kind of supercritical CO2Circulating fluidized bed boiler device, which is characterized in that including burner hearth (2), cyclone separator (4), control
Regulating valve (7) processed, external bed heat (8) and high temperature reheater (9)；
The exhanst gas outlet of burner hearth (2) is connected with the entrance of cyclone separator (4), and the outlet at bottom of cyclone separator (4) is divided into
Two-way, wherein being connected all the way with the air compartment of burner hearth (2) (1), another way is through controlling to adjust valve (7) and external bed heat (8)
Entrance be connected, the outlet of external bed heat (8) is connected with the air compartment (1) of burner hearth (2), high temperature reheater (9) arrangement
In external bed heat (8), the top exit of cyclone separator (4) is connected with back-end ductwork.
2. supercritical CO according to claim 12Circulating fluidized bed boiler device, which is characterized in that the outlet of burner hearth (2)
It is connected through separator inlet duct (3) with the entrance of cyclone separator (4).
3. supercritical CO according to claim 12Circulating fluidized bed boiler device, which is characterized in that cyclone separator (4)
Outlet at bottom be divided into two-way through separator standpipe (5), wherein air compartment (1) phase through high temperature refeed line (6) with burner hearth (2) all the way
Connection, another way are connected through controlling to adjust valve (7) with the entrance of external bed heat (8).
4. supercritical CO according to claim 32Circulating fluidized bed boiler device, which is characterized in that external bed heat
(8) outlet is connected through low temperature refeed line (10) with the air compartment (1) of burner hearth (2).
5. supercritical CO according to claim 12Circulating fluidized bed boiler device, which is characterized in that cyclone separator (4)
Top exit be connected through separator exhaust exit pipe (11) with back-end ductwork.
6. supercritical CO according to claim 12Circulating fluidized bed boiler device, which is characterized in that overcritical for coal base
CO2In Brayton cycle electricity generation system, the direction circulated along flue gas in back-end ductwork is disposed with high temperature superheater (12), low
Warm reheater (13), gas cooler (14) and air preheater (15)；
Coal base supercritical CO2The cold side outlet of cryogenic regenerator is divided into two-way in Brayton cycle electricity generation system, wherein all the way with cigarette
The entrance of Gas Cooler (14) is connected, another way and coal base supercritical CO2Brayton cycle electricity generation system high temperature regenerator
Cold side input port be connected, the outlet of gas cooler (14) and coal base supercritical CO2Brayton cycle electricity generation system high temperature
The cold side outlet port of regenerator is connected by the air cooling wall entrance of pipeline and Guan Houyu burner hearths (2)；
The air cooling wall outlet of burner hearth (2) is connected with the entrance of high temperature superheater (12), the outlet of high temperature superheater (12) and coal
Base supercritical CO2The entrance of Brayton cycle electricity generation system mesohigh turbine is connected；
Coal base supercritical CO2The outlet of Brayton cycle electricity generation system mesohigh turbine is connected with the entrance of low-temperature reheater (13)
Logical, the outlet of low-temperature reheater (13) is connected with the entrance of high temperature reheater (9), outlet and the coal base of high temperature reheater (9)
Supercritical CO2Low pressure turbine in Brayton cycle electricity generation system is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721350982.2U CN207599686U (en) | 2017-10-19 | 2017-10-19 | Supercritical CO2Circulating fluidized bed boiler device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721350982.2U CN207599686U (en) | 2017-10-19 | 2017-10-19 | Supercritical CO2Circulating fluidized bed boiler device |
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| Publication Number | Publication Date |
|---|---|
| CN207599686U true CN207599686U (en) | 2018-07-10 |
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| CN201721350982.2U Active CN207599686U (en) | 2017-10-19 | 2017-10-19 | Supercritical CO2Circulating fluidized bed boiler device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110094723A (en) * | 2019-05-15 | 2019-08-06 | 东方电气集团东方锅炉股份有限公司 | A kind of recirculating fluidized bed therrmodynamic system arragement construction for firing superelevation ash fuel |
-
2017
- 2017-10-19 CN CN201721350982.2U patent/CN207599686U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110094723A (en) * | 2019-05-15 | 2019-08-06 | 东方电气集团东方锅炉股份有限公司 | A kind of recirculating fluidized bed therrmodynamic system arragement construction for firing superelevation ash fuel |
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