CN204786371U - Sediment device and circulating fluidized bed boiler fall - Google Patents
Sediment device and circulating fluidized bed boiler fall Download PDFInfo
- Publication number
- CN204786371U CN204786371U CN201520469238.9U CN201520469238U CN204786371U CN 204786371 U CN204786371 U CN 204786371U CN 201520469238 U CN201520469238 U CN 201520469238U CN 204786371 U CN204786371 U CN 204786371U
- Authority
- CN
- China
- Prior art keywords
- slag
- air inducing
- pipe
- gas
- bypass
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
- 239000013049 sediment Substances 0.000 title abstract 11
- 239000002893 slag Substances 0.000 claims abstract description 117
- 230000032258 transport Effects 0.000 claims abstract description 26
- 230000001939 inductive effect Effects 0.000 claims description 59
- 239000007787 solid Substances 0.000 claims description 34
- 238000005243 fluidization Methods 0.000 abstract description 5
- 238000005461 lubrication Methods 0.000 abstract description 4
- 239000003818 cinder Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 17
- 239000002245 particle Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 239000000446 fuel Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 239000002956 ash Substances 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 235000002918 Fraxinus excelsior Nutrition 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000010884 boiler slag Substances 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- -1 slag-draining device Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Landscapes
- Gasification And Melting Of Waste (AREA)
Abstract
The utility model discloses a sediment device and circulating fluidized bed boiler fall, the sediment device that falls includes scum pipe (1), transports tub (2) and enters sediment pipe (3), the last port of scum pipe (1) feeds through just with row's cinder notch of boiler the lower port of scum pipe (1) with transport the last port intercommunication of tub (2), the last port that enters sediment pipe (3) with the lower port that transports tub (2) feeds through just advance the lower port of sediment pipe (3) and the slag inlet intercommunication of cold sediment ware, wherein, the sediment device that falls still include with transport tub (2) intercommunication and can the top that transports tub (2) forms the induced air subassembly of low -pressure area. Form the low -pressure area in the top that is transporting the pipe through the induced air subassembly, reduce end sediment downstream measured time and carry the quantity of gas that gets into cold sediment ware, avoid because these gaseous lubrications, fluidization and produce a class sediment phenomenon. Simultaneously, the gas that gets into the low -pressure area is the single phase flow in the induced air subassembly, and the amount of wind, wind speed are controlled easily.
Description
Technical field
The utility model relates to boiler slag removal field, particularly, relates to one and to fall slag device and CFBB.
Background technology
China's inferior fuel rich reserves, and CFBB is wide for coal adaptability, can realize the low cost of inferior fuel, high efficiency utilization by circulating fluidized-bed boiler Combustion technology.The common feature of inferior fuel is that calorific value is low, content of ashes is high, and therefore, the flying dust flow using the CFBB of these fuel is very large, and end slag flow is also very large.In order to control bed pressure and thickness of bed layer, prevent scoriae, ensure good fluidization conditions, smooth combustion, avoid lime-ash coking, these end slags must in good time draining.On the other hand, heat transfer in circulating fluid bed boiler, mass transfer, burning depend on Matter Transfer in stove all to a great extent, therefore, must ensure in stove that the material having sufficient amount is to construct Matter Transfer, so the discharge capacity of end slag neither be the bigger the better, thus realize controllable slag emission and become extremely important.
As shown in Figure 1, domestic at present CFBB used fall slag device primarily of scum pipe, transport pipe and slag feed pipe composition.When actual motion, slag cooler is according to roller slag cooler the slag cooler form of main flow (existing), then ash-retention efficiency transports by cylinder decision of exerting oneself, and slag is then controlled by the accumulation of slag in slag feed pipe exit automatically in the flow rate in slag device that falls.But, along with popularization and the development of the sunken bed storage low energy consumption running technology of CFBB, in CFBB, bed material quality becomes higher, becomes thinner to coal particle size, the granularity of end slag is also corresponding thinner, thus makes fine grain particle portion in end slag become larger.Under this kind of background, follow that they are descending together because end slag can carry portion gas by burner hearth in the process that the slag device that falls is descending, finally enter slag cooler.This part gas can play fluidisation, lubrication to transporting of particle in slag cooler, thus make particle cannot form effective accumulation in slag cooler import, its flowing in slag cooler is also no longer controlled by the fin in cylinder, so the control that cylinder will lose deslagging, this is stream slag phenomenon.When stream slag phenomenon appears in slag cooler, slag flow rate is by out of hand at the end, and in a large amount of stove, material enters slag cooler at short notice, destroys cold slag, slag-draining device, and material minimizing, bed temperature in stove are declined, and may cause blowing out time serious.
The method of current control flow check slag turns down slag device portal aperture often, such as, carry out aperture adjustment by the valve 8 in Fig. 1, but this kind of method often brings stifled slag problem, and deslagging is easy to because pipeline aperture is too small and interrupts.Usually all need to recover deslagging by manually disclosing slag after stifled slag occurs, this will bring high cost of labor, so this kind of way is not the Perfected process solving slag cooler stream slag problem.
Because the above-mentioned shortcoming of prior art, need to provide a kind of novel slag device that falls.
Utility model content
The purpose of this utility model is to provide a kind of slag device that falls that effectively can solve slag cooler stream slag problem.
To achieve these goals, the utility model provides one to fall slag device, this slag device that falls comprises scum pipe, transports pipe and slag feed pipe, the upper port of described scum pipe is communicated with the slag-drip opening of boiler and the lower port of described scum pipe is communicated with the described upper port transporting pipe, the upper port of described slag feed pipe is communicated with the described lower port transporting pipe and the lower port of described slag feed pipe is communicated with the slag inlet of slag cooler, it is characterized in that, described in the slag device that falls also comprise and be communicated with the described pipe that transports and can transport described the air inducing assembly forming low-pressure area above pipe.
Preferably, described scum pipe and slag feed pipe are obliquely installed, described in transport pipe and vertically arrange.
Preferably, described air inducing assembly comprises air-introduced machine and air inducing bypass, and one end port of described air inducing bypass is connected with described air-introduced machine and the other end port of described air inducing bypass is communicated with the described upper port transporting pipe.
Preferably, described air inducing bypass is vertically arranged.
Preferably, described air inducing assembly also comprises gas-solid separator, and the entrance of described gas-solid separator is communicated with the upper port of described air inducing bypass, and the outlet of described gas-solid separator is connected with described air-introduced machine by air inducing air channel.
Preferably, described gas-solid separator is formed as chamber, and the cross sectional dimensions of described gas-solid separator is greater than the cross sectional dimensions of described air inducing bypass.
Preferably, described air inducing bypass and described gas-solid separator are cylindrical shape, and the internal diameter D of described gas-solid separator is greater than the internal diameter d of described air inducing bypass.
Preferably, the length of described air inducing bypass is h, and h > 2d.
Preferably, the height of described gas-solid separator is H, and H >=d.
In addition, the utility model also provides a kind of CFBB, and it comprises the above-mentioned slag device that falls.
Form low-pressure area by air inducing assembly transporting above pipe in technique scheme, when reducing the descending flowing of end slag, carry the gas flow entering slag cooler, avoid due to the lubrication of these gases, fluidization and produce and flow slag phenomenon.Meanwhile, the gas entering low-pressure area is single-phase flowing in air inducing assembly, and air quantity, wind speed easily control, and compared to the aperture regulating slag device, the work of the technical solution of the utility model is more reliable.In addition, the technical solution of the utility model does not change the circulation area on original slag dropping tube road, therefore does not affect the normal transport capability of slag device, thus can not cause stifled slag phenomenon.
Other feature and advantage of the present utility model are described in detail in detailed description of the invention part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide further understanding of the present utility model, and forms a part for description, is used from explanation the utility model, but does not form restriction of the present utility model with detailed description of the invention one below.In the accompanying drawings:
Fig. 1 be existing fall the schematic diagram of slag device;
Fig. 2 is the schematic diagram of the slag device that falls of the utility model detailed description of the invention.
Wherein,
1 scum pipe 2 transports pipe
The other pipe of 3 slag feed pipe 4 air inducing
5 gas-solid separator 6 air inducing air channels
7 air-introduced machine 8 valves
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described in detail.Should be understood that, detailed description of the invention described herein, only for instruction and explanation of the utility model, is not limited to the utility model.
In description of the present utility model, it should be noted that, orientation or the position relationship of the instruction such as term "up" and "down" are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of the device of instruction or hint indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.
The utility model provides one to fall slag device, this slag device that falls comprises scum pipe 1, transports pipe 2 and slag feed pipe 3, the upper port of scum pipe 1 is communicated with the slag-drip opening of boiler and the lower port of scum pipe 1 is communicated with the upper port transporting pipe 2, the upper port of slag feed pipe 3 is communicated with the lower port transporting pipe 2 and the lower port of slag feed pipe 3 is communicated with the slag inlet of slag cooler, wherein, the slag device that falls also comprises and transports pipe 2 and be communicated with and can transporting the air inducing assembly forming low-pressure area above pipe 2.Form low-pressure area by air inducing assembly transporting above pipe 2, when reducing the descending flowing of end slag, carry the gas flow entering slag cooler, avoid due to the lubrication of these gases, fluidization and produce and flow slag phenomenon.Meanwhile, the gas entering low-pressure area is single-phase flowing in air inducing assembly, and air quantity, wind speed easily control, and compared to the aperture regulating slag device, the work of the technical solution of the utility model is more reliable.In addition, the technical solution of the utility model does not change the circulation area on original slag dropping tube road, therefore does not affect the normal transport capability of slag device, thus can not cause stifled slag phenomenon.
Particularly, scum pipe 1, transport pipe 2 and slag feed pipe 3 is cylindrical shape (certain square tube is also feasible), and as shown in Figure 2, scum pipe 1 and slag feed pipe 3 are obliquely installed, transport pipe 2 vertically to arrange, thus make the end slag of discharging from the slag-drip opening of boiler can successfully enter slag cooler to cool.
Wherein, air inducing assembly comprises air-introduced machine 7 and air inducing bypass 4, one end port of described air inducing bypass 4 is connected with air-introduced machine 7 and the other end port of air inducing bypass 4 is communicated with the upper port transporting pipe 2, thus form low-pressure area transporting above pipe 2, gas entrained when end slag is descending in scum pipe 1 will enter air inducing bypass 4 under the effect of pressure reduction, and end slag also will greatly be reduced transporting the descending gas flow that can carry in pipe 2.Subsequently, end slag will enter slag cooler by slag feed pipe 3, a small amount of carry gas, be not enough to form gravity flow in slag cooler owing to being only attended by.As one preferred embodiment, air inducing bypass 4 is vertically arranged, and to form low-pressure area transporting directly over pipe 2, thus reaches better air inducing and gas-solid separating effect.
Further, air inducing assembly also comprises gas-solid separator 5, and the entrance of gas-solid separator 5 is communicated with the upper port of air inducing bypass 4, and the outlet of gas-solid separator 5 is connected with air-introduced machine 7 by air inducing air channel 6.Wherein, gas-solid separator 5 is formed as chamber, and structure is simple, with low cost, and the cross sectional dimensions of gas-solid separator 5 is greater than the cross sectional dimensions of air inducing bypass 4, and cross section herein specifically refers to the cross section vertical with gas flow direction.Part fine grained in end slag may be carried by air inducing and enter air inducing bypass 4, then enters gas-solid separator 5.In gas-solid separator 5, gas flow rate reduces rapidly, and the carrying capacity of gas to particle decreases, and fine grained will in this area deposition, convergence, and again descending with the form of cluster of grains, gets back to and transports pipe 2, and finally enter slag cooler.Air inducing, after gas-solid separator 5, again accelerates in air inducing air channel 6, finally enters air-introduced machine 7.By the decelerating effect of gas-solid separator 5, reduce air inducing to the carrying capacity of particle, prevent fine grained from blocking air inducing air channel 6 or damaging air-introduced machine 7, also avoid causing thin slag to run off.
Wherein, as preferred embodiment, air inducing bypass 4 and gas-solid separator 5 are cylindrical shape, the internal diameter D of gas-solid separator 5 is greater than the internal diameter d of air inducing bypass 4, to make air inducing can effectively be slowed down in gas-solid separator 5, and reduce the carrying capacity of gas to particle, prevent particle from entering air inducing air channel 6.Further, the length of air inducing bypass 4 is h, and h > 2d, to ensure that gas-solid separator 5 has enough installing spaces, there is not space interference with scum pipe 1.The height of gas-solid separator 5 is H, and H >=d, so that the process that air inducing has enough distances to complete sufficient deceleration to accelerate again, being also convenient to particle has time enough and space to stop at this, assemble, then descending.
To fall slag device relative to the tradition shown in Fig. 1, the utility model do not change original fall the circulation area of slag device, namely under not changing the precondition of end slag transport capability, utilize air inducing bypass 4 to effectively reduce end slag and carry the gas flow entered in slag cooler, to effectively prevent in slag cooler end slag from the generation of flow phenomenon; Meanwhile, by gas-solid separator 5, the end slag of part fine grain can be prevented to run off because of the rolling action of air inducing, and enter the gas of low-pressure area, after gas-solid separator, be single-phase flowing in air inducing assembly, air quantity, wind speed easily control.
The utility model also provides a kind of CFBB, and it comprises the above-mentioned slag device that falls, effectively to process the end slag of boiler.
Below preferred embodiment of the present utility model is described by reference to the accompanying drawings in detail; but; the utility model is not limited to the detail in above-mentioned embodiment; within the scope of technical conceive of the present utility model; can carry out multiple simple variant to the technical solution of the utility model, these simple variant all belong to protection domain of the present utility model.
It should be noted that in addition, each the concrete technical characteristic described in above-mentioned detailed description of the invention, in reconcilable situation, can be combined by any suitable mode.In order to avoid unnecessary repetition, the utility model illustrates no longer separately to various possible combination.
In addition, also can be combined between various different embodiment of the present utility model, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.
Claims (10)
1. fall slag device, described fall slag device comprise scum pipe (1), transport pipe (2) and slag feed pipe (3), the upper port of described scum pipe (1) is communicated with the slag-drip opening of boiler and the lower port of described scum pipe (1) is communicated with the described upper port of managing (2) that transports, the upper port of described slag feed pipe (3) to be communicated with and the lower port of described slag feed pipe (3) is communicated with the slag inlet of slag cooler with the described lower port of managing (2) that transports, it is characterized in that, described fall slag device also comprise and manage (2) and be communicated with described transporting and can transport described the air inducing assembly that the top of managing (2) forms low-pressure area.
2. according to claim 1 fall slag device, it is characterized in that, described scum pipe (1) and slag feed pipe (3) are obliquely installed, described in transport pipe (2) and vertically arrange.
3. according to claim 2 fall slag device, it is characterized in that, described air inducing assembly comprises air-introduced machine (7) and air inducing bypass (4), and one end port of described air inducing bypass (4) is connected with described air-introduced machine (7) and the other end port of described air inducing bypass (4) is communicated with the described upper port of managing (2) that transports.
4. according to claim 3 fall slag device, it is characterized in that, described air inducing bypass (4) is vertically arranged.
5. according to claim 4 fall slag device, it is characterized in that, described air inducing assembly also comprises gas-solid separator (5), the entrance of described gas-solid separator (5) is communicated with the upper port of described air inducing bypass (4), and the outlet of described gas-solid separator (5) is connected with described air-introduced machine (7) by air inducing air channel (6).
6. according to claim 5 fall slag device, it is characterized in that, described gas-solid separator (5) is formed as chamber, and the cross sectional dimensions of described gas-solid separator (5) is greater than the cross sectional dimensions of described air inducing bypass (4).
7. according to claim 6 fall slag device, it is characterized in that, described air inducing bypass (4) and described gas-solid separator (5) are cylindrical shape, and the internal diameter D of described gas-solid separator (5) is greater than the internal diameter d of described air inducing bypass (4).
8. according to claim 7 fall slag device, it is characterized in that, the length of described air inducing bypass (4) is h, and h > 2d.
9. according to claim 7 fall slag device, it is characterized in that, the height of described gas-solid separator (5) is H, and H >=d.
10. CFBB, is characterized in that, described CFBB comprises the slag device that falls according to any one of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520469238.9U CN204786371U (en) | 2015-07-02 | 2015-07-02 | Sediment device and circulating fluidized bed boiler fall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520469238.9U CN204786371U (en) | 2015-07-02 | 2015-07-02 | Sediment device and circulating fluidized bed boiler fall |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204786371U true CN204786371U (en) | 2015-11-18 |
Family
ID=54526417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520469238.9U Withdrawn - After Issue CN204786371U (en) | 2015-07-02 | 2015-07-02 | Sediment device and circulating fluidized bed boiler fall |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204786371U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104949116A (en) * | 2015-07-02 | 2015-09-30 | 中国神华能源股份有限公司 | Slag falling device and circulating fluidized-bed boiler |
| CN110748879A (en) * | 2019-11-19 | 2020-02-04 | 大唐鸡西第二热电有限公司 | Device for enhancing smooth slag discharging at inlet of slag discharging pipe of 300MW circulating fluidized bed boiler and installation method |
-
2015
- 2015-07-02 CN CN201520469238.9U patent/CN204786371U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104949116A (en) * | 2015-07-02 | 2015-09-30 | 中国神华能源股份有限公司 | Slag falling device and circulating fluidized-bed boiler |
| CN104949116B (en) * | 2015-07-02 | 2017-09-15 | 中国神华能源股份有限公司 | Fall slag device and CFBB |
| CN110748879A (en) * | 2019-11-19 | 2020-02-04 | 大唐鸡西第二热电有限公司 | Device for enhancing smooth slag discharging at inlet of slag discharging pipe of 300MW circulating fluidized bed boiler and installation method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101949535B (en) | Low-ratio biomass circulating fluidized bed boiler and combustion method thereof | |
| CN101949537B (en) | Circulating fluidized bed boiler bottom slag cooling system | |
| CN101995016B (en) | Circulating fluidized bed boiler device using low calorific value coal gangue for post ignition | |
| CN105090980B (en) | A kind of spiral-flow type fluidized bed combustion device | |
| CN102155744A (en) | System for pre-drying coal with high water content by utilizing residual heat of boiler gas | |
| CN110529872B (en) | Power station boiler waste heat utilization system based on inlet flue gas temperature communication control | |
| CN204786371U (en) | Sediment device and circulating fluidized bed boiler fall | |
| CN104874234B (en) | Roasting flue gas heat recovery and dust suppression system of zinc oxide production device | |
| CN108679603A (en) | A kind of circulating fluidized bed boiler circulating ratio and grey balance regulator control system and method | |
| CN109959025B (en) | Intelligent communication control power station boiler waste heat utilization system | |
| CN103697467B (en) | Method for coal slime combustion of circulating fluidized bed boiler | |
| CN104696951B (en) | Boiler-in integrated coupled desulfurization and denitrification method for circulating fluidized bed boiler | |
| CN110748912A (en) | Power station boiler waste heat utilization system based on smoke temperature communication control valve | |
| CN102679390A (en) | Compound furnace arch and compound secondary air structure for cooperatively controlling generation of nitrogen oxide (NOX) | |
| CN104949116A (en) | Slag falling device and circulating fluidized-bed boiler | |
| CN202519313U (en) | Boiler for refining vanadium pentoxide by decarburization and roasting technology | |
| CN101922720B (en) | Hearth soot blower | |
| CN105090942B (en) | A kind of micro- wind cap device | |
| CN109340743B (en) | Fine coal particle circulating fluidized bed boiler | |
| CN208042121U (en) | A kind of pulverized coal particle recirculating fluidized bed combustion system | |
| CN116146973A (en) | Low-level arrangement high-efficiency boiler system with desulfurization and denitrification circulating fluidized bed in furnace | |
| CN109931597A (en) | A kind of fuel staging gasification and low NOXBurning boiler | |
| CN102095254B (en) | Organic heat carrier boiler of fluidized bed, with low cost, environment protection, energy saving and emission reduction | |
| CN209084749U (en) | A kind of circulating fluidized bed boiler circulating ratio and grey balance regulator control system | |
| CN202973068U (en) | Fired water-coal-slurry circulating fluidized bed boiler |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151118 Effective date of abandoning: 20170915 |
|
| AV01 | Patent right actively abandoned |