CN105485672B - Biomass recirculating fluidized bed boiler air distribution plate discloses slag method and its device automatically - Google Patents
Biomass recirculating fluidized bed boiler air distribution plate discloses slag method and its device automatically Download PDFInfo
- Publication number
- CN105485672B CN105485672B CN201510992023.XA CN201510992023A CN105485672B CN 105485672 B CN105485672 B CN 105485672B CN 201510992023 A CN201510992023 A CN 201510992023A CN 105485672 B CN105485672 B CN 105485672B
- Authority
- CN
- China
- Prior art keywords
- slag
- distribution plate
- air distribution
- fluidized bed
- bed boiler
- 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.)
- Active
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C10/00—Fluidised bed combustion apparatus
- F23C10/18—Details; Accessories
- F23C10/24—Devices for removal of material from the bed
Abstract
The invention discloses a kind of biomass recirculating fluidized bed boiler air distribution plate to disclose slag method and its device automatically.Its technical scheme is at the runoff notch sidewall opening of air distribution plate, favours a scum pipe piece outer tube being connected with runoff notch sidewall opening of arrangement, and sets a band to disclose slag head and the extension type fluidisation airduct of fluidized wind outlet in outer cannula cavity.When boiler normal operation, slag head will be disclosed and stretched in the bed above runoff notch, and exported by fluidized wind to runoff notch surrounding and spray fluidized wind；When boiler needs deslagging, slag head will be disclosed and be retracted in overcoat tube cavity, and make to disclose the top of slag head and the sidewall opening of runoff notch coincide it is closed；When deslagging blocking occurs in boiler, slag head will be disclosed stretched back and forth in the bed above runoff notch and complete physical agitation, crushed bulk slagging, while spray fluidized wind and continue to purge the lime-ash near runoff notch, slag is disclosed automatically so as to realize.It is of the invention that effectively overcoming Traditional Man discloses the various defects that slag is brought.
Description
Technical field
The present invention relates to circulating fluidized-bed boiler Combustion technology field, in particular to a kind of biomass recirculating fluidized bed boiler
Air distribution plate discloses slag method and its device automatically.
Background technology
Today's society is faced with the dual test of the huge energy and environmental problem, finds a kind of reproducible replacement energy
Source turns into the problem of urgent need to resolve.Biomass fuel is because its is renewable, directly can store and transport and CO2Discharge capacity is small etc. excellent
Point, it develops the extensive concern for causing countries in the world.At present, available biomass fuel mainly includes：Various agricultures
Industry discarded object such as rice husk, cotton stalk, Rape Straw and cornstalk etc., all kinds of forestry wastes such as branch bavin, wood leftover material, tree root
Deng and the dregs of a decoction, building template, urban waste etc..
Recirculating fluidized bed (CFB) boiler be last century the eighties just gradually grow up high efficiency, low stain and comprehensive
Close the good combustion technology of utility.Because it has the advantages that fuel tolerance is wide, disposal of pollutants is low, cost of investment is few,
It is received much concern, especially with recirculating fluidized bed (CFB) boiler combustion generation technology of biomass fuel, have wide
Application prospect.
Fluidized combustion technology used by CFBB is one kind between coal-powder boiler suspension combustion and chain furnace
The usually said partical suspension burning mode of combustion system between fixed combustion, i.e. those skilled in the art.So-called fluidization
Refer to that solid material particle is in flow regime in the presence of air, so as to the state with many fluid properties.Circulating
There is substantial amounts of bed (material), these beds in fluidized-bed combustion boiler stove to be in the presence of boiler First air, Secondary Air
Fluidized state, and the outer circulation outside interior circulation and burner hearth in burner hearth is completed, so as to realize that the uninterrupted reciprocation cycle of boiler is fired
Burn.
However, specific to for the CFBB for using biomass fuel, biomass fuel is relative to tradition
Pulverized Coal the characteristics of there is its own, what direct combustion power plant generally burnt is the mixture of various biomass fuels.It is this mixed
The problem of complexity of conjunction raw material easily to produce slagging when biomass fuel burns in CFBB.For example,
Various biomass fuels collection, accumulating, it is broken during usually contain substantial amounts of dust and sandstone；Agricultural wastes such as rice
Contain substantial amounts of SiO in the rice hull ash after hearth combustion such as shell2, these SiO2Easily become molten slagging at high temperature；Build
It is mingled with the metal objects such as iron wire, iron nail in building mould and other wood wastes, is dropped after burning on the air distribution plate of burner hearth, pole
Easily occur gathering and put up a bridge.Also, due to the special construction of air distribution plate in itself in CFBB, the slagging of slag-discharge pipe upper end
Near hole blast cap arrangement negligible amounts, easily cause fluidize herein it is bad.In addition, in order to realize smooth slagging, on slag-discharge pipe
Hold runoff notch position plane to be less than the plane of surrounding, it is bad to also result in whole slag-drip opening position cloth distinguished and admirableization.And fluidize not
It is good to cause bulk clinker and coke button to be easily accumulated near runoff notch, there is the not smooth phenomenon of deslagging, the safety economy of boiler is transported
Row and reliability have a significant impact.Therefore, the CFBB as biological substance for combustion, it is one that its slag-discharge pipe, which easily blocks,
The problem of urgent need to resolve.
At present, each power plant generally solves the runoff notch of biomass recirculating fluidized bed boiler by the way of slag is manually disclosed at scene
Blockage problem.Generally, scene is disclosed more than necessary two operating personnel of slag, wherein a people is responsible for the operation of slag-discharge pipe baffle plate specially,
Now easily there is spray slag, bed gravity flow and other anomalies for jeopardizing personal safety, it is necessary to quick closedown slag-discharge pipe baffle plate, with
Prevent personnel from scalding.An other operating personnel then suitably disclose slag instrument from reinforcing bar or steel pipe equal strength, stand and are grasped after screen
Make to smash coke button or other tampers, prevent that dredging the ejection of moment warm sludge hurts sb.'s feelings.While slag is disclosed, it is also necessary to reduce burner hearth
Primary air flow, and look over one's shoulder boiler operatiopn operating mode, maintain the stabilization of boiler parameter, discovery jeopardizes personnel's person and equipment
The anomaly of safety needs resolute processing, just can ensure that the safe, continuous of boiler controller system, stable operation.As can be seen here, it is existing
Biomass boiler slagging blockage it is frequent, operating personnel disclose that slag bad environments, labor intensity are big, cost of labor is high, and by
In blocking and caused by shutdown maintenance frequency it is higher, the security and economy of boiler are poor.
The content of the invention
Present invention aim to provide a kind of biomass recirculating fluidized bed boiler air distribution plate disclose automatically slag method and its
Device, the problem of biomass boiler slagging blockage is can effectively solve the problem that using this method and its device, overcomes Traditional Man to disclose
A series of security and economy defects that slag is brought.
To achieve the above object, the biomass recirculating fluidized bed boiler air distribution plate designed by the present invention discloses slag method automatically,
Be at the runoff notch sidewall opening of the boiler grid plate, favour scum pipe arrange one be connected with runoff notch sidewall opening
Outer tube, and in outer cannula cavity set a band disclose slag head and fluidized wind outlet extension type fluidisation airduct, its have
Gymnastics is made to comprise the following steps：
1) when boiler is in normal operating condition, slag head will be disclosed and stretch in the bed above runoff notch, make fluidized wind
Outlet height is corresponding with the First air blast cap outlet port on air distribution plate, sprays fluidisation to runoff notch surrounding by fluidizing airduct
Wind, the fluidized wind is set to be acted synergistically with the First air that the First air blast cap (10) on air distribution plate sprays, to strengthen near runoff notch
The fluid effect of lime-ash；
2) when boiler is in normal deslagging state, slag head will be disclosed and be retracted in overcoat tube cavity, and make the top for disclosing slag head
The sidewall opening of portion and runoff notch coincide it is closed, to avoid its deslagging on scum pipe from influenceing；
3) when deslagging blockage occurs in boiler, will disclose slag head in the bed above runoff notch back and forth stretch complete thing
Reason agitation, crushes bulk slagging, while keeps the state of fluidized wind pipe inspection fluidized wind, continues to near runoff notch
Lime-ash is purged, and slag is disclosed automatically so as to realize.
Preferably, in the step 1), control fluidized wind injection direction and horizontal plane angle of inclination for 0~
25 °, optimal angle of inclination is 5~15 °.So, it can prevent the materials such as the clinker in recirculating fluidized bed from entering fluidisation airduct,
Fluidized wind blockage phenomenon is effectively avoided to occur.
Preferably, in the step 1), control the jet velocity of fluidized wind for First air jet velocity 1~
2.5 times, preferably the 1.5~2.0 of First air jet velocity times.So, it can both play a part of strengthening local fluidization, again may be used
To prevent the bed in recirculating fluidized bed and some waste residues in fuel from being collected around to runoff notch.
Preferably, in the step 1), the injection air quantity for controlling fluidized wind is single First air blast cap injection one
0.5~5.0 times of secondary wind air quantity, 2.5~3.5 times of preferably single First air blast cap injection First air air quantity.So, can be with
The Fluidization wind rate near runoff notch is matched with the primary air flow of surrounding more reasonable, form good flow field, further strengthen
The fluid effect of lime-ash near runoff notch.
Preferably, in the step 3), it is First air blast cap height to control and disclose the amplitude that slag head stretches back and forth
0.5~1.5 times.So, the slagging scope of the overwhelming majority near runoff notch can be substantially covered, makes the impulse stroke for disclosing slag head
It is more reasonable.
Further, in the step 3), it is 10~30 beats/min to control and disclose the frequency that slag head stretches back and forth.So, fit
When slag frequency of disclosing to may insure that bulk slagging quickly loosens broken, it is most and under the lasting purging effect of spray fluidized wind
Discharged soon from runoff notch through scum pipe, so that it is guaranteed that deslagging is unobstructed.
Preferably, in the step 3), whether runoff notch is judged by detecting the temperature change in scum pipe
Block：When the temperature of collection is less than normal deslagging temperature, illustrate that scum pipe deslagging is not smooth, the runoff notch above scum pipe occurs
Block, now start and disclose slag head progress flexible agitation back and forth.So, the knot at runoff notch can be accurately caught by Temperature numerical
Slag blocked state, slag head flexible physical agitation, and then be easily carried out under not blowing out state back and forth is disclosed so as to start in time
Slag is disclosed in automation.
The present invention pacifies to realize that the biomass recirculating fluidized bed boiler air distribution plate that the above method designs discloses slag device automatically
Scum pipe side at the runoff notch of the boiler grid plate, below runoff notch, it is characterized in that：
It includes favouring the outer tube of scum pipe arrangement, the upper end tube nozzle of the outer tube and the sidewall opening of runoff notch
Be connected, the inner chamber of the outer tube be provided with can axial stretching fluidisation airduct；The upper end tube nozzle end face of the fluidisation airduct is set
It is equipped with and discloses slag head, the sidewall opening shape of the top shape for disclosing slag head and runoff notch matches, the fluidisation airduct upper end
Mouth of pipe side wall is provided with fluidized wind outlet；Fluidized wind entrance, the fluidized wind are provided with the lower end mouth of pipe of the fluidisation airduct
The lower end mouth of pipe side wall of pipe is provided with rack, and the rack and pinion engagement coordinates, and the gear passes through transmission mechanism and motor
It is connected, so as to drive fluidisation airduct and disclose slag head relative to outer tube telescopic moving；
The slag head of disclosing stretches in the bed above the runoff notch of air distribution plate and the fluidisation in boiler normal operation
The outlet port of First air blast cap of the wind outlet with being arranged on air distribution plate is corresponding；The slag head of disclosing contracts in the normal deslagging of boiler
Be back in outer tube and the sidewall opening of the top for disclosing slag head and runoff notch coincide it is closed；The slag head of disclosing is arranged in boiler
Telescopic moving up and down is realized by the positive and negative rotation of motor when slag blocks, so as to complete to disclose slag action automatically.
Preferably, it is provided with fluidized wind regulating valve on the pipeline of the fluidized wind entrance.So, can be according to following
The actual operating mode of circulation fluidized bed boiler, the nozzle parameter of fluidized wind is adjusted in time, to ensure that the fluidisation near runoff notch is imitated
Fruit all-the-time stable.
Further, wind regime of the input of the fluidized wind regulating valve and boiler is connected.So, can be with common boiler
Wind regime, simplify equipment investment, save wind resource.
Preferably, the lower end mouth of pipe side wall of the outer tube be provided with set manage-style entrance, the outer tube it is upper
Annulus forming sleeves wind between end pipe mouth and the outer wall for fluidizing airduct exports.So, can by covering being blown into for manage-style,
Effectively prevent the materials such as the clinker in recirculating fluidized bed from entering above-mentioned annulus, avoid component wear and the hair of stuck accident
It is raw.
Further, set manage-style regulating valve is provided with the pipeline of described sleeve pipe wind entrance.It is also possible to according to recycle stream
The actual operating mode of fluidized bed boiler, the nozzle parameter of timely adjusting set manage-style, it is ensured that fluidisation airduct is flexible in outer sleeve pipe
Motion stabilization is reliable.
Yet further, the input of described sleeve pipe wind regulating valve is also connected with wind regime of boiler.So, can both simplify
Equipment investment, again can conveniently management operation.
Preferably, heat sensor, the heat sensor are provided with the scum pipe side wall below the runoff notch
It is connected by signal wire with boiler control system, so as to the operation of controlled motor.So, the temperature gathered according to heat sensor is believed
Number, whether boiler control system can be blocked with runoff notch during self monitor deslagging, so as to drive rack-and-pinion to link by motor,
And drive is disclosed slag head and stretched back and forth, realize and disclose slag automatically under not blowing out state.
Further, the heat sensor uses thermocouple.Its is simple and practical, stable and reliable in work, use cost
It is cheap.
Preferably, the fluidized wind outlet is uniformly distributed along fluidisation airduct upper end tube nozzle side wall.For example, can edge
It is arranged circumferentially 4~6, naturally it is also possible to be diametrically arranged symmetrically 2.So, the fluidized wind that fluidisation airduct is sprayed
Acted synergistically with the First air of First air blast cap injection, the Flow Field Distribution of runoff notch surrounding can be made tend to be balanced, effectively prevent
Bed fluidisation is bad or fluidizes the generation of dead angle phenomenon.
Further, in horizontally or diagonally arranging downwards, it inclines the injection direction of the fluidized wind outlet with horizontal plane
Rake angle is 0~25 °, and optimal angle of inclination is 5~15 °.So, both can be with First air corrdinated adjustment recirculating fluidized bed
Fluidized state, the lime-ash in recirculating fluidized bed can be prevented to enter fluidisation airduct again, it is ensured that fluidisation airduct is unobstructed all the time.
Preferably, the outer tube is 15~40 ° relative to the angle of inclination of scum pipe, optimal angle of inclination
For 20~25 °.So, it can make to be attached to and disclose slag dress thereon in the case where not influenceing CFBB normal operation
It is compacter to put structure, space-consuming is smaller, and assembly cost is lower, and operation and control are more safe and reliable.
Compared with traditional manual operation discloses slag mode, the present invention has the beneficial effect of following several respects：
First, pass through the stream sprayed in the increase design of biomass recirculating fluidized bed boiler air distribution plate slagging hole site to surrounding
Wind transmission, it is formed synergistic effect with the First air that the First air blast cap on air distribution plate sprays, can effectively solve the position and be less than
The defects of surrounding plane, blast cap arrange negligible amounts and cause cloth wind bad, improves the fluid effect of lime-ash near runoff notch, subtracts
The accumulation of few bulk clinker and coke button, so as to which the stifled slag frequency at runoff notch be greatly reduced, it is ensured that the stable operation of boiler and peace
Full reliability.
Second, what can be stretched back and forth by being set above biomass recirculating fluidized bed boiler air distribution plate runoff notch discloses slag
Head, its bulk clinker formed in time to slagging hole site and coke button is carried out physical agitation, can smash to pieces automatically by dust, sand
High-temperature fusion slagging caused by the impurity such as stone, rice hull ash and dropped by iron wire, iron nail the like waste and formed accumulation and take
Bridge, while coordinate the lasting purging of fluidized wind, it both ensure that boiler slag removal was unblocked all the time, and reduced the labor of operating personnel again
Fatigue resistance, the shutdown maintenance cycle is also extended, so as to significantly reduce boiler operatiopn cost.
Third, being retracted to by the way that slag head will be disclosed in biomass recirculating fluidized bed boiler deslagging in overcoat tube cavity, and make
Disclose the top of slag head and the sidewall opening of runoff notch coincide closed, scum pipe that can by runoff notch and below is completely recovered to
State without any obstruction, prevent to fluidize airduct and its disclose influence of the slag head to tapping process；Also, due to bulk slagging
Broken, tapping process operates without worker in adverse circumstances, effectively prevent the generation for jeopardizing personnel's personal safety accident, together
When boiler operating efficiency greatly improved.
In summary, the present invention can effectively improve the fluidization characteristic of biomass recirculating fluidized bed boiler runoff notch, significantly
The blocking frequency of runoff notch in boiler combustion running is reduced, can not only be realized under the situation of not blowing out and disclose slag automatically,
And can save and manually disclose the sky high cost of slag, while the frequency of boiler shutdown maintenance can also be reduced, effectively improve power plant
The security and economy of boiler.
Brief description of the drawings
Fig. 1 is that a kind of biomass recirculating fluidized bed boiler air distribution plate discloses structural representation of the slag device in the state of stretching automatically
Figure；
Fig. 2 is that air distribution plate shown in Fig. 1 discloses structural representation of the slag device in retracted mode automatically；
Fig. 3 is the combined amplifier structural representation that airduct and outer tube are fluidized in Fig. 1；
In figure：Motor 1, gear 2, fluidisation airduct 3 is (wherein：Disclose slag first 31, fluidized wind outlet 32, fluidized wind entrance 33, tooth
Bar 34, fluidized wind regulating valve 35), outer tube 4 is (wherein：Cover manage-style entrance 41, set manage-style outlet 42, set manage-style regulating valve 43),
Heat sensor 5, air distribution plate 6, scum pipe 7, runoff notch 8, bed 9, First air blast cap 10, wind regime 11 of boiler.
Embodiment
Apparatus and method of the present invention is described in further detail below in conjunction with the drawings and specific embodiments.
Biomass recirculating fluidized bed boiler air distribution plate shown in figure discloses slag device automatically, installed in the air distribution plate 6 of boiler
Runoff notch 8 at, positioned at the side of scum pipe 7 of the lower section of runoff notch 8.It has the outer tube 4 for favouring the arrangement of scum pipe 7, should
Outer tube 4 is about 22~24 ° relative to the angle of inclination of scum pipe 7, and the upper end tube nozzle of the outer tube 4 is by welding manner with putting
The sidewall opening of cinder hole 8 is connected as a single entity, and its is simple and compact for structure, space-consuming is minimum.
Be provided with the inner chamber of outer tube 4 can axial stretching fluidisation airduct 3, the upper end tube nozzle end of the fluidisation airduct 3
Face, which is welded with, discloses slag first 31, and this discloses the top shape of slag first 31 and matched with the sidewall opening shape of runoff notch 8, so that it is retracted
When it is chimeric with side wall closed.2~4 fluidized wind outlets 32, the fluidized wind are uniformly offered in the fluidisation upper end tube nozzle side wall of airduct 3
The injection direction of outlet 32 is tilted down arrangement, and the angle of inclination of itself and horizontal plane is designed as 10~12 °, itself and First air association
With coordinating, the fluidized state in boiler can be made to reach optimal, while prevent lime-ash from entering fluidisation airduct 3.
Fluidized wind entrance 33 is provided with the lower end mouth of pipe side side wall of fluidisation airduct 3, in the pipe of fluidized wind entrance 33
Fluidized wind regulating valve 35 is installed, wind regime 11 of input and boiler of the fluidized wind regulating valve 35 is connected on road.By
Line adjusts the parameters such as the wind speed of fluidized wind, air quantity, can persistently maintain boiler fluid effect stable；By sharing a wind regime,
Boiler operatiopn cost can effectively be reduced.
Rack 34 is provided with the lower end mouth of pipe opposite side side wall of fluidisation airduct 3, the rack 34 engages with gear 2 matches somebody with somebody
Close, the gear 2 is connected by transmission mechanism with motor 1.During work, start motor 1 and lead to again with the positive and negative rotation of moving gear 2, gear 2
Cross the driving of rack 34 fluidisation airduct 3 and disclose slag first 31 relative to the telescopic moving of outer tube 4 or stop at the desired position.
It is additionally provided with the lower end mouth of pipe side wall of outer tube 4 and covers manage-style entrance 41, and the upper end tube nozzle and stream of outer tube 4
Annulus then forming sleeves wind outlet 42 between the outer wall of wind transmission pipe 3.It is provided with the pipeline of above-mentioned set manage-style entrance 41
Manage-style regulating valve 43 is covered, the input of the set manage-style regulating valve 43 is also connected with wind regime 11 of boiler.Pass through on-line control set
The parameters such as the wind speed of manage-style, air quantity, both can form cooperative effect as the supplement of fluidized wind, lime-ash can also be prevented to enter ring
Gap space, make stretching motion of the fluidisation airduct 3 in outer tube 4 reliable and stable；Meanwhile cover manage-style and also share a wind regime, can
Further to save part input, it is easy to equipment control.
In the present embodiment, heat sensor 5 is additionally provided with the side wall of scum pipe 7 below runoff notch 8, heat sensor 5 is adopted
With cost is cheap, thermocouple of reliable operation, it is connected by signal wire with boiler control system.Supervised in real time by heat sensor 5
The temperature regime surveyed in scum pipe 7, and online data is transferred to boiler control system, for the positive and negative of automatic control motor 1
Rotation stops.
When above-mentioned biomass recirculating fluidized bed boiler air distribution plate discloses the work of slag device automatically, its concrete operation method is included such as
Lower step：
1) in boiler normal operation, boiler control system can be rotated forward by motor 1 with moving gear 2, drive gear 2
The straight line of carry-over bar 34 moves upwards, so that the slag first 31 of disclosing of fluidisation airduct 3 upper end tube nozzle end face stretches out outer tube 4, and stops
In bed 9 above runoff notch 8, the fluidized wind now fluidized in the upper end tube nozzle side wall of airduct 3 exports 32 height and air distribution plate 6
On the outlet port of First air blast cap 10 it is corresponding.Then, by fluidized wind outlet 32 to the surrounding of runoff notch 8 injection stream diagonally downward
Wind transmission, it is ensured that the injection direction of fluidized wind and the angle of inclination of horizontal plane are 8~12 °, and pass through fluidized wind regulating valve 35 and set
The cooperating of the grade of manage-style regulating valve 43, the jet velocity of fluidized wind is controlled to be sprayed once for the last wind blast cap 10 of air distribution plate 6
1.6~1.8 times of wind velocity, while control the injection air quantity of fluidized wind to spray First air air quantity for single First air blast cap 10
2.8~3.2 times, sprayed fluidized wind is acted synergistically with the First air that the First air blast cap 10 on air distribution plate 6 sprays, putting
Cinder hole 8 is formed about good fluid effect.
2) when boiler needs deslagging, boiler control system can be reversely rotated by motor 1 with moving gear 2, drive gear 2
Carry-over bar 34 moves downward linearly, so that the slag first 31 of disclosing of fluidisation airduct 3 upper end tube nozzle end face is retracted to the inner chamber of outer tube 4
In, and ensure to disclose the top of slag first 31 be bonded completely with the sidewall opening of runoff notch 8 it is closed, it is possible thereby to prevent to fluidize airduct 3
With disclose obstruction of the slag first 31 to slagging channel, it is ensured that runoff notch 8 and scum pipe 7 reach optimal deslagging state.
3) during boiler slag removal, temperature is joined in the scum pipe 7 that boiler control system can gather to heat sensor 5 online
Number is judged, when the temperature that heat sensor 5 gathers is less than normal deslagging temperature, illustrates that the deslagging of scum pipe 7 is not smooth, scum pipe
There is slagging blocking in the runoff notch 8 of 7 tops.Now boiler control system can make tooth by motor 1 with the positive and negative rotation of moving gear 2
The driving rack of wheel 2 moves along a straight line about 34, so that slag first 31 is disclosed above runoff notch 8 in fluidisation airduct 3 upper end tube nozzle end face
Bed 9 in stretch back and forth, preferably disclose that the amplitude that slag first 31 stretches back and forth is the height of First air blast cap 10 1.0 times, disclose slag head
31 frequencies stretched back and forth are 20~25 beats/min, are smashed into most bulk slagging suitable for deslagging to pieces by physical agitation
The fritter lime-ash that pipe 7 passes through.At the same time, remain that fluidisation airduct 3 sprays the state of fluidized wind, make it continuously right
Lime-ash near runoff notch 8 is purged, so that tapping process is automatic, efficient, safety, economy.
Claims (23)
1. a kind of biomass recirculating fluidized bed boiler air distribution plate discloses slag method automatically, it is characterised in that：This method is in air distribution plate
(6) at runoff notch (8) sidewall opening, scum pipe (7) piece overcoat being connected with runoff notch (8) sidewall opening of arrangement is favoured
Manage (4), and set a band to disclose slag head (31) and the extension type fluidized wind of fluidized wind outlet (32) in outer tube (4) inner chamber
Manage (3), concrete operations comprise the following steps：
1) when boiler is in normal operating condition, it will disclose in the bed (9) that slag head (31) stretched to above runoff notch (8), make
Fluidized wind outlet (32) it is highly corresponding with First air blast cap (10) outlet port on air distribution plate (6), by fluidize airduct (3) to
Runoff notch (8) surrounding sprays fluidized wind, the fluidized wind is assisted with the First air that the First air blast cap (10) on air distribution plate (6) sprays
Same-action, to strengthen the fluid effect of the neighbouring lime-ash of runoff notch (8)；
2) when boiler is in normal deslagging state, slag head (31) will be disclosed and be retracted in outer tube (4) inner chamber, and make to disclose slag head
(31) sidewall opening of top and runoff notch (8) coincide it is closed, to avoid its deslagging on scum pipe (7) from influenceing；
3) when deslagging blockage occurs in boiler, it will disclose and stretched back and forth in bed (9) of the slag head (31) above runoff notch (8)
Physical agitation is completed, crushes bulk slagging, while keeps fluidizing the state of airduct (3) injection fluidized wind, is continued to putting
The lime-ash of cinder hole (8) nearby is purged, and slag is disclosed automatically so as to realize.
2. biomass recirculating fluidized bed boiler air distribution plate according to claim 1 discloses slag method automatically, it is characterised in that：Institute
State in step 1), it is 0~25 ° to control the injection direction of fluidized wind and the angle of inclination of horizontal plane.
3. biomass recirculating fluidized bed boiler air distribution plate according to claim 2 discloses slag method automatically, it is characterised in that：Institute
State in step 1), it is 5~15 ° to control the injection direction of fluidized wind and the angle of inclination of horizontal plane.
4. biomass recirculating fluidized bed boiler air distribution plate according to claim 1 discloses slag method automatically, it is characterised in that：Institute
State in step 1), the jet velocity for controlling fluidized wind is 1~2.5 times of First air jet velocity.
5. biomass recirculating fluidized bed boiler air distribution plate according to claim 4 discloses slag method automatically, it is characterised in that：Institute
State in step 1), the jet velocity for controlling fluidized wind is 1.5~2.0 times of First air jet velocity.
6. biomass recirculating fluidized bed boiler air distribution plate according to claim 1 discloses slag method automatically, it is characterised in that：Institute
State in step 1), control the injection air quantity of fluidized wind to spray the 0.5~5.0 of First air air quantity for single First air blast cap (10)
Times.
7. biomass recirculating fluidized bed boiler air distribution plate according to claim 6 discloses slag method automatically, it is characterised in that：Institute
State in step 1), control the injection air quantity of fluidized wind to spray the 2.5~3.5 of First air air quantity for single First air blast cap (10)
Times.
8. biomass recirculating fluidized bed boiler air distribution plate according to claim 1 discloses slag method automatically, it is characterised in that：Institute
State in step 3), control and disclose slag head (31) flexible amplitude is 0.5~1.5 times of First air blast cap (10) height back and forth.
9. biomass recirculating fluidized bed boiler air distribution plate according to claim 1 discloses slag method automatically, it is characterised in that：Institute
State in step 3), it is 10~30 beats/min to control and disclose the frequency that slag head (31) stretches back and forth.
10. biomass recirculating fluidized bed boiler air distribution plate according to claim 1 discloses slag method automatically, it is characterised in that：
In the step 3), judge whether runoff notch (8) blocks by detecting the temperature change in scum pipe (7)：When the temperature of collection
When degree is less than normal deslagging temperature, illustrating that scum pipe (7) deslagging is not smooth, the runoff notch (8) above scum pipe (7) blocks,
Now start and disclose slag head (31) progress flexible agitation back and forth.
11. a kind of biomass recirculating fluidized bed boiler air distribution plate discloses slag device automatically, the runoff notch (8) installed in air distribution plate (6)
Place, scum pipe (7) side below runoff notch (8), it is characterised in that：
It includes favouring the outer tube (4) of scum pipe (7) arrangement, upper end tube nozzle and the runoff notch (8) of the outer tube (4)
Sidewall opening is connected, the inner chamber of the outer tube (4) be provided with can axial stretching fluidisation airduct (3)；The fluidisation airduct (3)
Upper end tube nozzle end face be provided with and disclose slag head (31), the top shape for disclosing slag head (31) and the sidewall opening of runoff notch (8)
Shape matches, and described fluidisation airduct (3) upper end tube nozzle side wall is provided with fluidized wind outlet (32)；The fluidisation airduct (3)
Fluidized wind entrance (33) is provided with the mouth of pipe of lower end, the lower end mouth of pipe side wall of the fluidisation airduct (3) is provided with rack (34), institute
State rack (34) and cooperation is engaged with gear (2), the gear (2) is connected by transmission mechanism with motor (1), so as to drive fluidisation
Airduct (3) and slag head (31) is disclosed relative to outer tube (4) telescopic moving；
It is described disclose slag head (31) stretched in boiler normal operation in the bed (9) above the runoff notch (8) of air distribution plate (6),
And the outlet port of First air blast cap (10) of the fluidized wind outlet (32) with being arranged on air distribution plate (6) is corresponding；It is described to disclose
Slag head (31) is retracted in the normal deslagging of boiler in outer tube (4) and the top for disclosing slag head (31) and runoff notch (8)
Sidewall opening coincide closed；The slag head (31) of disclosing is realized up and down when boiler slag removal blocks by the positive and negative rotation of motor (1)
Telescopic moving, so as to complete to disclose slag action automatically.
12. biomass recirculating fluidized bed boiler air distribution plate according to claim 11 discloses slag device automatically, it is characterised in that：
Fluidized wind regulating valve (35) is provided with the pipeline of the fluidized wind entrance (33).
13. biomass recirculating fluidized bed boiler air distribution plate according to claim 12 discloses slag device automatically, it is characterised in that：
Wind regime (11) of the input of the fluidized wind regulating valve (35) and boiler is connected.
14. biomass recirculating fluidized bed boiler air distribution plate according to claim 11 discloses slag device automatically, it is characterised in that：
The lower end mouth of pipe side wall of the outer tube (4) is provided with set manage-style entrance (41), the upper end tube nozzle and fluidisation of the outer tube (4)
Annulus forming sleeves wind outlet (42) between the outer wall of airduct (3).
15. biomass recirculating fluidized bed boiler air distribution plate according to claim 14 discloses slag device automatically, it is characterised in that：
Set manage-style regulating valve (43) is provided with the pipeline of described sleeve pipe wind entrance (41).
16. biomass recirculating fluidized bed boiler air distribution plate according to claim 15 discloses slag device automatically, it is characterised in that：
Wind regime (11) of the input of described sleeve pipe wind regulating valve (43) and boiler is connected.
17. biomass recirculating fluidized bed boiler air distribution plate according to claim 11 discloses slag device automatically, it is characterised in that：
Heat sensor (5) is provided with scum pipe (7) side wall below the runoff notch (8), the heat sensor (5) passes through signal wire
It is connected with boiler control system, so as to the operation of controlled motor (1).
18. biomass recirculating fluidized bed boiler air distribution plate according to claim 17 discloses slag device automatically, it is characterised in that：
The heat sensor (5) is thermocouple.
19. biomass recirculating fluidized bed boiler air distribution plate according to claim 11 discloses slag device automatically, it is characterised in that：
The fluidized wind outlet (32) is uniformly distributed along fluidisation airduct (3) upper end tube nozzle side wall.
20. biomass recirculating fluidized bed boiler air distribution plate according to claim 19 discloses slag device automatically, it is characterised in that：
The injection direction of fluidized wind outlet (32) in horizontally or diagonally arrangement downwards, the angle of inclination of itself and horizontal plane for 0~
25°。
21. biomass recirculating fluidized bed boiler air distribution plate according to claim 20 discloses slag device automatically, it is characterised in that：
The injection direction of the fluidized wind outlet (32) and the angle of inclination of horizontal plane are 5~15 °.
22. biomass recirculating fluidized bed boiler air distribution plate according to claim 11 discloses slag device automatically, it is characterised in that：
The outer tube (4) is 15~40 ° relative to the angle of inclination of scum pipe (7).
23. biomass recirculating fluidized bed boiler air distribution plate according to claim 22 discloses slag device automatically, it is characterised in that：
The outer tube (4) is 20~25 ° relative to the angle of inclination of scum pipe (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510992023.XA CN105485672B (en) | 2015-12-24 | 2015-12-24 | Biomass recirculating fluidized bed boiler air distribution plate discloses slag method and its device automatically |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510992023.XA CN105485672B (en) | 2015-12-24 | 2015-12-24 | Biomass recirculating fluidized bed boiler air distribution plate discloses slag method and its device automatically |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105485672A CN105485672A (en) | 2016-04-13 |
| CN105485672B true CN105485672B (en) | 2017-11-10 |
Family
ID=55672828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510992023.XA Active CN105485672B (en) | 2015-12-24 | 2015-12-24 | Biomass recirculating fluidized bed boiler air distribution plate discloses slag method and its device automatically |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105485672B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106016256B (en) * | 2016-07-12 | 2018-09-21 | 郑州锅炉股份有限公司 | Slag device and circulating fluidized bed boiler |
| CN108730966A (en) * | 2017-04-20 | 2018-11-02 | 中节能(宿迁)生物质能发电有限公司 | A kind of biomass direct-combustion boiler pulsed slag-draining device |
| CN107418635B (en) * | 2017-07-27 | 2020-06-05 | 新奥科技发展有限公司 | Slag discharging system, fluidized bed gasification furnace and coal gasification slag discharging method |
| CN107543153B (en) * | 2017-10-25 | 2022-04-08 | 大唐鸡西第二热电有限公司 | Circulating fluidized bed slag discharge pipe device and dredging method |
| CN110986034A (en) * | 2019-12-18 | 2020-04-10 | 哈尔滨锅炉厂有限责任公司 | Novel fluidized bed boiler prevents stifled burnout and arranges sediment device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3713011C1 (en) * | 1987-04-16 | 1988-05-26 | Steinmueller Gmbh L & C | Equipment for treating hot loose material |
| CN202328205U (en) * | 2011-11-21 | 2012-07-11 | 周双双 | Dredging device used at discharging pipe inlet of recirculating fluidized bed |
| CN203099859U (en) * | 2013-02-26 | 2013-07-31 | 河北省电力勘测设计研究院 | Wet-type slag removing system for coal-powder boiler |
| CN103994445A (en) * | 2014-05-22 | 2014-08-20 | 北京中科通用能源环保有限责任公司 | Feeding device and cooling system for slag cooler of fluidized bed garbage incinerator |
| CN204039469U (en) * | 2014-09-01 | 2014-12-24 | 山西太钢不锈钢股份有限公司 | A kind of crystallizer for electroslag furnace discloses slag device |
| CN204593401U (en) * | 2015-03-20 | 2015-08-26 | 承德环能热电有限责任公司 | Refuse incinerator of circulating fluid bed slag-drip opening material-blockage preventing device |
| CN204784775U (en) * | 2015-07-01 | 2015-11-18 | 青岛嘉能海诺电力设备有限公司 | High temperature ash accuse valve |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4698461B2 (en) * | 2006-03-28 | 2011-06-08 | 本田技研工業株式会社 | Shift drum device |
-
2015
- 2015-12-24 CN CN201510992023.XA patent/CN105485672B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3713011C1 (en) * | 1987-04-16 | 1988-05-26 | Steinmueller Gmbh L & C | Equipment for treating hot loose material |
| CN202328205U (en) * | 2011-11-21 | 2012-07-11 | 周双双 | Dredging device used at discharging pipe inlet of recirculating fluidized bed |
| CN203099859U (en) * | 2013-02-26 | 2013-07-31 | 河北省电力勘测设计研究院 | Wet-type slag removing system for coal-powder boiler |
| CN103994445A (en) * | 2014-05-22 | 2014-08-20 | 北京中科通用能源环保有限责任公司 | Feeding device and cooling system for slag cooler of fluidized bed garbage incinerator |
| CN204039469U (en) * | 2014-09-01 | 2014-12-24 | 山西太钢不锈钢股份有限公司 | A kind of crystallizer for electroslag furnace discloses slag device |
| CN204593401U (en) * | 2015-03-20 | 2015-08-26 | 承德环能热电有限责任公司 | Refuse incinerator of circulating fluid bed slag-drip opening material-blockage preventing device |
| CN204784775U (en) * | 2015-07-01 | 2015-11-18 | 青岛嘉能海诺电力设备有限公司 | High temperature ash accuse valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105485672A (en) | 2016-04-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105485672B (en) | Biomass recirculating fluidized bed boiler air distribution plate discloses slag method and its device automatically | |
| CN103486593B (en) | A kind of waste incineration boiler and its application method | |
| CN205090381U (en) | Burning furnace is burnt to environment -friendly for refuse treatment | |
| CN105180175B (en) | A kind of fluidized bed refuse incinerator dreg removing system and Slagoff method | |
| CN106402894A (en) | Large-size hazardous waste rotary kiln type incinerator device taking sludge as main target | |
| CN101749726A (en) | Air circulating system for combustion furnace | |
| CN210740407U (en) | Device for cooperatively treating various wastes in cement kiln | |
| CN104006392A (en) | Preparation type ash residue fusion device | |
| CN207471564U (en) | Ashes cool down collection system | |
| CN116221733A (en) | Small solid waste incinerator | |
| CN201628210U (en) | Furfural residue smoke drying and residue blast throwing device of furfural residue boiler | |
| CN201485424U (en) | Automatic blanking diesel stove | |
| CN205893099U (en) | Coal -fired lime sleeve kiln combustor device | |
| CN207471566U (en) | Biomass combustion boiler nozzle and ashes cooling system | |
| CN106861328A (en) | A kind of biomass gasification fired device cleaning system | |
| CN107435933A (en) | Energy-saving incinerator | |
| CN208606183U (en) | A kind of dangerous waste disposal system | |
| CN207527567U (en) | A kind of biomass particle burning machine | |
| CN208089360U (en) | Coal-fired coupled biological matter, rubbish, sludge gasification burning cogeneration system | |
| CN207922235U (en) | A kind of closed upright garbage incinerating system | |
| CN207298914U (en) | One kind vortex rotary burning type biomass fuel boiler | |
| CN102798118B (en) | Cyclone boiler | |
| CN207797067U (en) | A kind of water-cooled waste incinerator of included slag trolley | |
| CN206861516U (en) | Anti-blocking spray apparatus for ash for CFBB separating system | |
| CN206646075U (en) | A kind of gas-carbon cogeneration top-suction type biomass gasification furnace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |