CN205480966U - A circulating fluidized bed boiler bed material addition system for bed is put to outband - Google Patents
A circulating fluidized bed boiler bed material addition system for bed is put to outband Download PDFInfo
- Publication number
- CN205480966U CN205480966U CN201620241104.6U CN201620241104U CN205480966U CN 205480966 U CN205480966 U CN 205480966U CN 201620241104 U CN201620241104 U CN 201620241104U CN 205480966 U CN205480966 U CN 205480966U
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- bed
- scraper
- external
- feeder
- pipeline
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Abstract
The utility model discloses a circulating fluidized bed boiler bed material addition system for bed is put to outband, including the scraper blade feeder, the scraper blade feeder is connected with furnace, includes still that the end sediment storehouse that connects gradually through the pipeline, the defeated sediment machine of chain bucket type, ash crusher, bucket elevator, bed feed bin, bed material weigh batcher and bed and expect scraper feeder, bed material scraper feeder's discharge gate with the scraper blade feeder is connected, the scraper blade feeder is connected through external bed connecting tube and external bed, install manual shut -off valve on the external bed connecting tube, lie in on the external bed connecting tube the exit of manual shut -off valve is provided with row material branch pipe, the tip of arranging the material branch pipe is provided with the end cap. The utility model discloses can adjust the interpolation requirement of boiler starting and bed material in service in a flexible way, operation safe and reliable, reliable and simple.
Description
Technical field
This utility model belongs to Sector of Cfb Boilers, particularly relates to a kind of recirculating fluidized bed for band external bed
Boiler bed add-on system.
Background technology
Along with the expansion of domestic and international market, fuel tolerance is wide, effect of burning owing to it has for CFB (recirculating fluidized bed) boiler
The advantages such as rate is high, gas pollutant discharge is low, load regulation range big, flying dust and slag can comprehensively utilize, external combustion at home
Large-scale power station with low heat value inferior fuel is used widely.The layout of Large CFB Boiler stove internal heating surface is restricted,
Generally external bed is set on the grey circulation line outside burner hearth, inside external bed, arranges that a certain amount of heating surface is to compensate stove
Internal heating surface arranges not enough problem.The operation principle of external bed is: the high temperature circulation ash two-way that separator separates returns
Melting down thorax, a road directly returns burner hearth through high temperature material returning device, and another road enters external bed, with the heating surface being arranged therein
Become cold cycle ash after completing heat exchange, then return burner hearth by low temperature feed back pipe.
It is both needed to fill in the CFB boiler starting ignition stage of band external bed, burner hearth air distribution plate and material returning device, external bed and starts
Bed, to set up initial Matter Transfer, when in CFB boiler running, bed temperature regulation is also required to suitably dose bed and adjusts
Joint bed temperature, and the bed of CFB boiler source is exactly the bottom ash of CFB boiler.Band for large-scale (such as 300MW power plant)
For the CFB boiler of external bed, the startup bed amount of needs is relatively big, and each power station is both needed to arrange bed induction system and meets boiler
Operation demand.
The most conventional bed induction system is many based on pneumatic conveying mode, also has some mechanical mode of movement.Air conveying
Mode system complex, investment are big, and owing to bed granularity is relatively big, the abrasion to conveyance conduit is heavier, also easily causes pipe
Road clogging.Machinery mode of movement mostly is and utilizes original coal conveyer belt that bed is delivered to run coal bin, then passes through coal supply system
Dose startup bed, but, this system must be intended to startup bed be delivered in run coal bin under run coal bin hole capital after selling all securities state,
Bed cannot be supplemented in boiler operatiopn state, and when pulverized coal conveying, it is necessary to the bed in run coal bin is emptied, or
When needing again to start after boiler shutdown, it is necessary to go up bed, this machinery mode of movement ratio after being emptied by the coal dust in run coal bin again
Relatively time-consuming, malfunction.Even if having bed bed and run coal bin to be provided separately, but substantial amounts of bed delivering to defeated coal from boiler
On belt, need to expend substantial amounts of labor strength, time and effort consuming.
Meanwhile, the coal feeding hole of band external bed boiler is generally arranged at the material returning device feed back lower limb of cyclone separator boiler furnace next time
On, bed add mouth be arranged on boiler return feeder feed back lower limb and external bed entrance on dipleg.And the bed of external bed is only
It is for accumulation of heat effect, if needing when restarting after boiler down to add bed, to external bed feed pipe on former feeder
The coal dust of upper remnants can enter external bed together in company with bed, burns and easily surpass into external bed heating surface accident even in external bed
Booster phenomenon.
Utility model content
For the deficiencies in the prior art, this utility model provides a kind of circulating fluidized bed boiler bed material for band external bed to add
System, it make use of original equipment to reduce construction investment and operating cost, it is also possible to takes into account external bed and adds the thing of bed
Therefore impact, can be safe and reliable to operation, simple with the interpolation requirement of bed in flexible boiler startup and operation.
This utility model solves its technical problem and be the technical scheme is that
A kind of bed material adding system of circulating fluid bed boiler for band external bed, this system includes being sequentially connected with by pipeline
Run coal bin, Gravimetric Coal Feeders and Scraper, described Scraper is by least one the burner hearth connecting tube being provided thereon
Road is connected with burner hearth, bottom ash storehouse that this system also includes being sequentially connected with by pipeline, chain-bucket slag conveyer, slag crusher, bucket type
Elevator, bed storehouse, bed Weighing feeder and bed scraper feeder, the discharging opening of described bed scraper feeder and institute
Stating Scraper to connect, described Scraper connects pipeline with external bed even by least one external bed being provided thereon
Connecing, described external bed connects to be provided with on pipeline and manually switches off valve, and described external bed connects that pipeline is upper to be manually switched off in described
The exit of valve is provided with discharge arm, and the end of described discharge arm is provided with plug.
By technique scheme, described run coal bin, Gravimetric Coal Feeders and Scraper are each provided with four, and described bed is scraped
Plate batcher is connected with two Scrapers being positioned at centre.
By technique scheme, described Scraper is provided with two burner hearths and connects pipeline and two external bed connecting tubes
Road.
By technique scheme, between all pipelines and horizontal plane, angle is more than or equal to 60 degree.
By technique scheme, the outlet at bottom in described bottom ash storehouse is additionally provided with haulage vehicle.
This utility model, has the advantages that this utility model make use of the intrinsic feature of CFB boiler, uses own
Bottom ash is used as bed, it is achieved that the fully automated of bed recycles, and greatly reduces man-handling of materials labor intensity simultaneously,
Both make use of ready-made equipment and pipeline (Scraper and feed pipe), and it also avoid traditional pneumatic conveying mode and bring
Pipe wear and easy clogging, when taking into account defeated coal simultaneously and start bed conversion, raw coal powder enters the shadow that external bed is brought
Ring, make further optimization in detail.This bed add-on system achieves and automatically controls, and system delivery of particulate material is more
Reliably, implementation cost, properly functioning and maintenance cost is the most significant lower.
This utility model has exert oneself big, simple in construction, multiple functional advantage, concrete, this system use bed storehouse and
While run coal bin is provided separately, a bed storehouse high position is arranged, utilize CFB boiler bottom ash after slag crusher is broken, use bucket type
Bed is transported to bed storehouse by elevator, recycles the feeder of original coal supply system and bed is added to boiler furnace and external
Bed, and first open plug when bed feeding, the remaining coal dust that feeder external bed connects in pipeline is first removed, removes
Turn off plug after completing, run bed system.This system both make use of original equipment to reduce construction investment and run into
This, it is also possible to take into account external bed and add the accident impact of bed, can be with the interpolation of bed in flexible boiler startup and operation
Requirement, safe and reliable to operation, simple.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Fig. 1 is the structural representation of this utility model embodiment.
Labelling in figure: 1-bottom ash storehouse；2-chain-bucket slag conveyer；3-slag crusher；4-bucket elevator；5-haulage vehicle；6-
Bed storehouse；7-bed Weighing feeder；8-bed scraper feeder；9-run coal bin；10-Gravimetric Coal Feeders；11-scraper plate is given
Coal machine；12-automatic cut-off valve；13-manually switches off valve；14-tee T；15-plug.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples,
This utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain this reality
With novel, it is not used to limit this utility model.
In preferred embodiment of the present utility model, as it is shown in figure 1, a kind of Fluidized Boiler Bed for band external bed
Material add-on system, this system includes run coal bin 9, Gravimetric Coal Feeders 10 and the Scraper 11 being sequentially connected with by pipeline,
Scraper 11 connects pipeline by least one burner hearth being provided thereon and is connected with burner hearth, and this system also includes by pipe
Bottom ash storehouse 1 that road is sequentially connected with, chain-bucket slag conveyer 2, slag crusher 3, bucket elevator 4, bed storehouse 6, bed are weighed
Batcher 7 and bed scraper feeder 8, the discharging opening of bed scraper feeder 8 is connected with Scraper 11, and scraper plate is given
Coal machine 11 connects pipeline by least one external bed being provided thereon and is connected with external bed, and external bed connects installs on pipeline
Manually switching off valve 13, external bed connects that pipeline is upper is provided with discharge arm, discharge in the exit manually switching off valve 13
The end of arm is provided with plug 15.
In preferred embodiment of the present utility model, as it is shown in figure 1, run coal bin 9, Gravimetric Coal Feeders 10 and Scraper
11 are each provided with four, and bed scraper feeder 8 is connected with two Scrapers 11 being positioned at centre.
In preferred embodiment of the present utility model, connect as it is shown in figure 1, be provided with two burner hearths on Scraper 11
Pipeline and two external bed connect pipeline.
In preferred embodiment of the present utility model, as it is shown in figure 1, angle is more than or equal to 60 between all pipelines and horizontal plane
Degree, it is simple to the automatic blanking of bed.
In preferred embodiment of the present utility model, as it is shown in figure 1, the outlet at bottom in bottom ash storehouse 1 is additionally provided with haulage vehicle
5.Boiler bottom slag storehouse 1 is two-funnel discharge hole structure, and one of them slag-drip opening correspondence carries bed to bucket elevator 4,
The interpolation demand of bed when can ensure that boiler operatiopn；When boiler need not supplement bed or reducing when bed demand,
The unnecessary quantity of slag is connected with haulage vehicle 5 slag dumping by another slag-drip opening in boiler bottom slag storehouse 1, by haulage vehicle 5 outwardly
Conveying stores.
This utility model is when specifically applying, as it is shown in figure 1, it is defeated that the bottom, bottom ash storehouse 1 of CFB boiler is provided with chain-bucket
For conveying slag, slag machine 2, is expected that slag crusher 3 is crushed to meet the slag of bed particle diameter, is more directly incited somebody to action by bucket elevator 4
Bed is transported to bed storehouse 6, and bed is sent into after then being measured by bed Weighing feeder 7 bed scraper feeder 8,
Bed is sent into Scraper 11 by pipeline by bed scraper feeder 8, Scraper 11 is provided with burner hearth and connects
Pipeline, for boiler furnace coal supply or to bed, Scraper 11 is additionally provided with external bed and connects pipeline, be used for
To external bed to bed, it is achieved that bed discharges the automatic interpolation entering back into boiler and external bed from boiler bottom slag.
This utility model is when specifically applying, as it is shown in figure 1, bottom ash storehouse 1, chain-bucket slag conveyer 2, slag crusher 3, bucket type
Elevator 4, bed storehouse 6, bed Weighing feeder 7, bed scraper feeder 8 the most only arrange one, run coal bin 9, title
Weight feeder 10, Scraper 11 are respectively provided with four sets, Yin Bentu focus on explanation bed add-on system, only depict and
Two run coal bins, 10, two Scrapers 11 of 9, two Gravimetric Coal Feeders that bed add-on system is relevant, scrape for other two
It is not provided with external bed on plate feeder 11 and connects pipeline, therefore schematic diagram is not drawn into, a wherein bed scraper feeder 8
The most corresponding four horizontally disposed Scrapers are arranged on two Scrapers 11 in centre position, these two scraper plates
Feeder 11, every platform is provided with four pipelines, and two material inlets of two corresponding boiler furnaces are (when pulverized coal conveying
For coal feeding hole) to add bed (or coal supply) to burner hearth, two other corresponding two external bed, add bed to external bed,
External bed only supplements bed by two Scrapers 11 i.e. can meet service requirement.
As it is shown in figure 1, external bed connects is provided with tee T 14 on pipeline, an interface of tee T 14 and scraper plate coal supply
Machine 11 connects, and second interface is connected with external bed, and the 3rd interface is connected with discharge arm.When starting bed system,
First the plug 15 on vertical direction discharge arm is opened, it is simple to the raw coal remained in pipeline is removed clean, restarts bed
Material add-on system, thus is avoided that raw coal enters external bed burning and causes internal heating surface booster.
As it is shown in figure 1, be respectively arranged with on the outlet conduit of outlet in each storehouse and scraper feeder 7 and Scraper 8 from
Dynamic shut-off valve 12 (can be electric and pneumatic), the effect of these shutoff doors is each interface and is not required to higher level or subordinate equipment
Switching is made used time to be run.
This utility model operation characteristic based on CFB (recirculating fluidized bed) boiler self, it is simply that set up fluid bed and formed repeatedly
Circulation, must be added to a large amount of bed in initial start stage, is also required to suitably supplement bed stablizing with maintenance bed pressure at run duration,
And the CFB boiler for a kind of band external bed that this utility model is more emphasized, and the bed add-on system of external bed is increasingly complex,
Need to add bed to boiler furnace and external bed simultaneously, do not tend to have pulverized coal particle simultaneously in external bed and enter, be heated to extend
The stable operation in face；And the source of bed uses the deslagging of CFB boiler itself just.This utility model arrange exactly a set of from
The dynamic bed system added, this system both make use of original equipment to reduce construction investment and operating cost, it is also possible to takes into account
External bed adds the accident impact of bed, and it can run peace with the interpolation requirement of bed in flexible boiler startup and operation
The most reliable, simple.
It should be appreciated that for those of ordinary skills, can be improved according to the above description or be converted, and
All these modifications and variations all should belong to the protection domain of this utility model claims.
Claims (5)
1., for the bed material adding system of circulating fluid bed boiler of band external bed, this system includes being sequentially connected with by pipeline
Run coal bin, Gravimetric Coal Feeders and Scraper, described Scraper is connected by least one burner hearth being provided thereon
Adapter road is connected with burner hearth, it is characterised in that this system also includes bottom ash storehouse, the chain-bucket being sequentially connected with by pipeline
Slag conveyer, slag crusher, bucket elevator, bed storehouse, bed Weighing feeder and bed scraper feeder, described bed
The discharging opening of material scraper feeder is connected with described Scraper, and described Scraper is by being provided thereon at least
One external bed connects pipeline and is connected with external bed, described external bed connection pipeline is provided with and manually switches off valve, described
External bed connects that pipeline is upper is provided with discharge arm, the end of described discharge arm in the described exit manually switching off valve
Portion is provided with plug.
System the most according to claim 1, it is characterised in that described run coal bin, Gravimetric Coal Feeders and Scraper are each
Being provided with four, described bed scraper feeder is connected with two Scrapers being positioned at centre.
System the most according to claim 1, it is characterised in that be provided with two burner hearth connecting tubes on described Scraper
Road and two external bed connect pipeline.
System the most according to claim 1, it is characterised in that between all pipelines and horizontal plane, angle is more than or equal to 60 degree.
System the most according to claim 1, it is characterised in that the outlet at bottom in described bottom ash storehouse is additionally provided with haulage vehicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620241104.6U CN205480966U (en) | 2016-03-25 | 2016-03-25 | A circulating fluidized bed boiler bed material addition system for bed is put to outband |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620241104.6U CN205480966U (en) | 2016-03-25 | 2016-03-25 | A circulating fluidized bed boiler bed material addition system for bed is put to outband |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205480966U true CN205480966U (en) | 2016-08-17 |
Family
ID=56647116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620241104.6U Expired - Fee Related CN205480966U (en) | 2016-03-25 | 2016-03-25 | A circulating fluidized bed boiler bed material addition system for bed is put to outband |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205480966U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108609363A (en) * | 2018-02-23 | 2018-10-02 | 河钢股份有限公司承德分公司 | A kind of chemical industry tablet material automatic transportation terminal apparatus |
| CN109484817A (en) * | 2018-11-26 | 2019-03-19 | 中国电力工程顾问集团西南电力设计院有限公司 | CFB unit is delivered coal system |
| CN112902156A (en) * | 2021-03-25 | 2021-06-04 | 北京干雾科技有限公司 | Device for quickly cleaning and adding CFB boiler bed materials and using method thereof |
-
2016
- 2016-03-25 CN CN201620241104.6U patent/CN205480966U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108609363A (en) * | 2018-02-23 | 2018-10-02 | 河钢股份有限公司承德分公司 | A kind of chemical industry tablet material automatic transportation terminal apparatus |
| CN109484817A (en) * | 2018-11-26 | 2019-03-19 | 中国电力工程顾问集团西南电力设计院有限公司 | CFB unit is delivered coal system |
| CN112902156A (en) * | 2021-03-25 | 2021-06-04 | 北京干雾科技有限公司 | Device for quickly cleaning and adding CFB boiler bed materials and using method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200917 Address after: 430223 Room 309, floor 3, Kaidi building, No.1, Jiangxia Avenue, Donghu New Technology Development Zone, Wuhan City, Hubei Province Patentee after: Wuhan Fengying Energy Technology Engineering Co.,Ltd. Address before: 613, room 430223, Katie building, Jiangxia Road, Miao Shan Development Zone, Jiangxia District, Hubei, Wuhan Patentee before: WUHAN KAIDI ELECTRIC POWER ENGINEERING Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160817 Termination date: 20210325 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |