CN105485672A - Automatic residue poking method and device for wind distribution plate of biomass circulating fluidized bed boiler - Google Patents
Automatic residue poking method and device for wind distribution plate of biomass circulating fluidized bed boiler Download PDFInfo
- Publication number
- CN105485672A CN105485672A CN201510992023.XA CN201510992023A CN105485672A CN 105485672 A CN105485672 A CN 105485672A CN 201510992023 A CN201510992023 A CN 201510992023A CN 105485672 A CN105485672 A CN 105485672A
- Authority
- CN
- China
- Prior art keywords
- slag
- air distribution
- fluidized bed
- wind
- 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.)
- Granted
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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
The invention discloses an automatic residue poking method and device for a wind distribution plate of a biomass circulating fluidized bed boiler. According to the technical scheme of the automatic residue poking method and device, an outer sleeve connected with a side wall opening of a residue discharging hole is arranged at the side wall opening of the residue discharging hole of the wind distribution plate and inclines relative to a residue discharging pipe, and a telescopic fluidization wind pipe with a residue poking head and fluidization wind outlets is arranged in an inner cavity of the outer sleeve. When the boiler operates normally, the residue poking head extends into a bed material above the residue discharging hole, and fluidization wind is injected to the periphery of the residue discharging hole through the fluidization wind outlets. When the residues need to be discharged from the boiler, the residue poking head draws back into the inner cavity of the outer sleeve so that the top of the residue poking head can be matched with the side wall opening of the residue discharging hole in a sealed manner. When the residues are blocked in the boiler in the discharging process, the residue poking head stretches out and draws back in the bed material above the residue discharging hole to finish physical stirring, large blocks of residues are broken, and meanwhile ash near the residue discharging hole can be continuously blown by injecting the fluidization wind, so that automatic residue poking is achieved. By the adoption of the automatic residue poking method and device, the defects brought by traditional manual residue poking are effectively overcome.
Description
Technical field
The present invention relates to circulating fluidized-bed boiler Combustion technology field, refer to that a kind of biomass recirculating fluidized bed boiler air distribution plate discloses slag method and device thereof automatically particularly.
Background technology
Society is faced with the dual test of the huge energy and environmental problem, and finding a kind of reproducible alternative energy source becomes the problem needing solution badly.Biomass fuel because it is renewable, directly can store and transport and CO
2the advantages such as discharge capacity is little, it develops the extensive concern causing countries in the world.At present, available biomass fuel mainly comprises: various agricultural wastes are if rice husk, cotton stalk, Rape Straw and cornstalk etc., all kinds of forestry waste are as branch bavin, wood leftover material, tree root etc. and the dregs of a decoction, building template, urban waste etc.
Recirculating fluidized bed (CFB) boiler is high efficiency that last century, the eighties just grew up gradually, low stain and the good combustion technology of comprehensive utilization performance.Because it has the advantages such as fuel tolerance is wide, disposal of pollutants is low, cost of investment is few, make it receive much concern, particularly adopt recirculating fluidized bed (CFB) the boiler combustion generation technology of biomass fuel, have broad application prospects.
The fluidized combustion technology that CFBB adopts is a kind of combustion system between coal-powder boiler suspension combustion and chain furnace fixed combustion, the partical suspension burning mode that namely those skilled in the art are usually said.So-called fluidization refers to that solid material particle is in flow regime under the effect of air, thus has the state of many fluid properties.A large amount of bed material (material) is there is in circulating fluid bed boiler, these material are in fluidized state under boiler First air, secondary wind action, and complete the Inner eycle in burner hearth and the outer circulation outside burner hearth, thus realize the uninterrupted reciprocation cycle burning of boiler.
But specifically for adopting the CFBB of biomass fuel, biomass fuel has the feature of himself relative to traditional Pulverized Coal, the mixture of what direct combustion power plant burnt usually is various biomass fuel.The problem of slagging scorification is very easily produced when the complexity of this mixed material makes biomass fuel burn in CFBB.Such as, various biomass fuel usually contains a large amount of dust and sandstone in collection, accumulating, broken process; Agricultural wastes as in the rice hull ash after hearth combustion such as rice husk containing a large amount of SiO
2, these SiO
2at high temperature very easily become molten slagging scorification; Be mingled with the metal object such as iron wire, iron nail in building template and other wood wastes, drop after burning on the air distribution plate of burner hearth, very easily occur gathering and putting up a bridge.Further, due to the special construction of air distribution plate in CFBB itself, negligible amounts arranged by blast cap near the runoff notch of slag-discharge pipe upper end, easily causes herein that fluidisation is bad.In addition, in order to realize smooth slagging, slag-discharge pipe upper end runoff notch position plane will, lower than the plane of surrounding, also can cause whole slag-drip opening position cloth distinguished and admirableization bad.And bad bulk slag and the coke button of causing of fluidisation easily accumulates near runoff notch, there is the smooth phenomenon of deslagging, the safety and economic operation of boiler and reliability are had a significant impact.Therefore, as the CFBB of biological substance for combustion, it is the difficult problem needing solution badly that its slag-discharge pipe easily blocks.
At present, each power plant generally adopts on-the-spot mode of manually disclosing slag to solve the runoff notch blockage problem of biomass recirculating fluidized bed boiler.Usually, slag is disclosed at scene must be more than two operating personnel, and wherein a people is responsible for the operation of slag-discharge pipe baffle plate specially, now easily occur spray slag, the gravity flow of bed material and other jeopardize the anomaly of personal safety, need quick closedown slag-discharge pipe baffle plate, scald to prevent personnel.Other operating personnel then select reinforcing bar or steel pipe equal strength suitable disclose slag instrument, stand in screen after operation to smash coke button or other tamper, prevent dredging moment warm sludge ejection hurt sb.'s feelings.While disclosing slag, also need the primary air flow reducing burner hearth, and boiler operatiopn operating mode of looking over one's shoulder, maintain the stable of boiler parameter, find that the anomaly jeopardizing personnel's person and device security needs resolute process, just can guarantee safe, continuous, the stable operation of boiler controller system.As can be seen here, existing biomass boiler slag-discharge pipe blocking is frequent, and operating personnel disclose slag bad environments, labour intensity is large, cost of labor is high, and the shutdown maintenance frequency caused due to blocking is higher, and security and the economy of boiler are poor.
Summary of the invention
Object of the present invention will provide a kind of biomass recirculating fluidized bed boiler air distribution plate automatically to disclose slag method and device thereof exactly, adopt the method and device thereof effectively can solve a difficult problem for biomass boiler slag-discharge pipe blocking, overcome Traditional Man and disclose a series of security and economy defect that slag brings.
For achieving the above object, biomass recirculating fluidized bed boiler air distribution plate designed by the present invention discloses slag method automatically, be at the runoff notch sidewall opening place of described boiler grid plate, favour scum pipe and arrange an outer tube be connected with runoff notch sidewall opening, and the extension type fluidisation airduct that a band discloses slag head and fluidized wind outlet is set in cannula cavity outside, its concrete operations comprise the steps:
1) when boiler is in normal operating condition, to disclose in bed material that slag head stretches to above runoff notch, make fluidized wind outlet height corresponding with the First air blast cap exit position on air distribution plate, by fluidisation airduct to the wind transmission of runoff notch surrounding injection stream, the First air that First air blast cap (10) on this fluidized wind and air distribution plate is sprayed acts synergistically, to strengthen the fluid effect of lime-ash near runoff notch;
2) when boiler is in normal deslagging state, slag head will be disclosed and be retracted in outer tube inner chamber, and make the sidewall opening at the top and runoff notch of disclosing slag head coincide airtight, to avoid it, deslagging of scum pipe be affected;
3) when deslagging blockage appears in boiler, physical agitation of having stretched back and forth will be disclosed in the bed material of slag head above runoff notch, make bulk slagging scorification broken, keep the state of fluidized wind pipe inspection fluidized wind simultaneously, its lime-ash continued near to runoff notch is purged, thus realizes automatically disclosing slag.
Preferably, described step 1) in, the injection direction of control flow check wind transmission and the angle of inclination of horizontal plane are 0 ~ 25 °, and best angle of inclination is 5 ~ 15 °.Like this, can prevent the materials such as the slag in recirculating fluidized bed from entering fluidisation airduct, effectively avoid fluidized wind blockage phenomenon to occur.
Preferably, described step 1) in, the jet velocity of control flow check wind transmission is 1 ~ 2.5 times of First air jet velocity, 1.5 ~ 2.0 times of preferably First air jet velocity.Like this, both can play the effect strengthening local fluidization, and can prevent again the bed material in recirculating fluidized bed and some waste residues in fuel from assembling near runoff notch.
Preferably, described step 1) in, the injection air quantity of control flow check wind transmission is 0.5 ~ 5.0 times that single First air blast cap sprays First air air quantity, and preferably single First air blast cap sprays 2.5 ~ 3.5 times of First air air quantity.Like this, the Fluidization wind rate near runoff notch can be made to mate with the primary air flow of surrounding more reasonable, form good flow field, strengthen the fluid effect of lime-ash near runoff notch further.
Preferably, described step 3) in, control to disclose 0.5 ~ 1.5 times that amplitude that slag head stretches back and forth is First air blast cap height.Like this, substantially can cover the slagging scorification scope of the overwhelming majority near runoff notch, make the impulse stroke of disclosing slag head more reasonable.
Further, described step 3) in, controlling to disclose the frequency that slag head stretches back and forth is 10 ~ 30 beats/min.Like this, suitable disclose slag frequency can to guarantee that bulk slagging scorification loosens fast broken, and under the lasting purging effect of institute's injection stream wind transmission, discharge through scum pipe from runoff notch as early as possible, thus guarantee that deslagging is unobstructed.
Preferably, described step 3) in, judge whether runoff notch blocks by the variations in temperature detected in scum pipe: when the temperature gathered is lower than normal deslagging temperature, illustrate that scum pipe deslagging is not smooth, there is blocking in runoff notch above scum pipe, now starts to disclose slag head and to stretch back and forth stirring.Like this, accurately can be caught the slagging scorification blocked state at runoff notch place by Temperature numerical, thus slag head flexible physical agitation is back and forth disclosed in startup in time, and then slag is disclosed in the automation realized easily under not blowing out state.
The present invention realizes the biomass recirculating fluidized bed boiler air distribution plate that said method designs automatically to disclose slag device, and be arranged on the runoff notch place of described boiler grid plate, be positioned at scum pipe side below runoff notch, its special character is:
It comprises the outer tube favouring scum pipe and arrange, the upper end mouth of pipe of described outer tube is connected with the sidewall opening of runoff notch, and the inner chamber of described outer tube is provided with can the fluidisation airduct of axial stretching; The upper end mouth of pipe end face of described fluidisation airduct is provided with discloses slag head, described in disclose the top shape of slag head and the sidewall opening mating shapes of runoff notch, described fluidisation airduct upper pipes mouth sidewall be provided with fluidized wind outlet; The mouth of pipe place, lower end of described fluidisation airduct is provided with fluidized wind entrance, the lower end mouth of pipe sidewall of described fluidisation airduct is provided with tooth bar, described rack and pinion engagement fit, described gear is connected with motor by transmission mechanism, thus drives fluidisation airduct and disclose slag head relative to outer tube telescopic moving;
In the described bed material disclosed above slag head stretches to air distribution plate runoff notch when boiler normally runs and the outlet of described fluidized wind is corresponding with the exit position of the First air blast cap be arranged on air distribution plate; Described disclose slag head to be retracted to when the normal deslagging of boiler in outer tube and described in disclose slag head the sidewall opening at top and runoff notch coincide airtight; Described slag head of disclosing realizes upper and lower telescopic moving when boiler slag removal blocks by the positive and negative rotation of motor, thus completes and automatically disclose slag action.
Preferably, the pipeline of described fluidized wind entrance is provided with fluidized wind control valve.Like this, according to the actual operating mode of CFBB, the nozzle parameter of fluidized wind can be regulated in time, to guarantee the fluid effect all-the-time stable near runoff notch.
Further, input and boiler wind regime of described fluidized wind control valve is connected.Like this, can common boiler wind regime, simplified apparatus drops into, and saves wind resource.
Preferably, the lower end mouth of pipe sidewall of described outer tube is provided with cover manage-style entrance, and the annulus forming sleeves wind between the upper end mouth of pipe of described outer tube and the outer wall of fluidisation airduct exports.Like this, by overlapping being blown into of manage-style, the materials such as the slag in recirculating fluidized bed effectively can be stoped to enter above-mentioned annulus, avoid the generation of component wear and stuck accident.
Further, the pipeline of described cover manage-style entrance is provided with cover manage-style control valve.Equally, can according to the actual operating mode of CFBB, the nozzle parameter of timely regulating sleeve manage-style, guarantees that the stretching motion of fluidisation airduct outside in sleeve pipe is reliable and stable.
Again further, the input of described cover manage-style control valve is also connected with boiler wind regime.Like this, both can drop into by simplified apparatus, can bookkeeping be facilitated again.
Preferably, the scum pipe sidewall below described runoff notch is provided with heat sensor, and described heat sensor is connected with boiler control system by holding wire, thus controls the operation of motor.Like this, according to the temperature signal that heat sensor gathers, boiler control system can self monitor deslagging time runoff notch whether block, thus order about rack-and-pinion interlock by motor, and drive and disclose slag head and stretch back and forth, realize automatically disclosing slag under not blowing out state.
Further, described heat sensor adopts thermocouple.It is simple and practical, and working stability is reliable, and use cost is cheap.
Preferably, described fluidized wind outlet is uniformly distributed along fluidisation airduct upper pipes mouth sidewall.Such as, can circumferentially be evenly arranged 4 ~ 6,2 can certainly be arranged symmetrically with diametrically.Like this, the fluidized wind that fluidisation airduct sprays and the First air that First air blast cap sprays act synergistically, and the Flow Field Distribution of runoff notch surrounding can be made to be tending towards balanced, effectively prevent the generation of the bad or fluidisation dead angle phenomenon of a streamization.
Further, the injection direction of described fluidized wind outlet be level or is tilted to lower layout, and the angle of inclination of itself and horizontal plane is 0 ~ 25 °, and the angle of inclination of the best is 5 ~ 15 °.Like this, both can with the fluidized state of First air corrdinated adjustment recirculating fluidized bed, the lime-ash in recirculating fluidized bed can be stoped again to enter fluidisation airduct, guarantee that fluidisation airduct is unobstructed all the time.
Preferably, described outer tube is 15 ~ 40 ° relative to the angle of inclination of scum pipe, and best angle of inclination is 20 ~ 25 °.Like this, when normally can run when not affecting CFBB, make that additional to disclose slag apparatus structure thereon compacter, take up room less, assembly cost is lower, operation and control more safe and reliable.
Compared with disclosing slag mode with traditional manual operation, the present invention has the beneficial effect of following several respects:
One, by increasing the fluidized wind that design is sprayed to surrounding in biomass recirculating fluidized bed boiler air distribution plate runoff notch position, the First air that First air blast cap on itself and air distribution plate is sprayed forms synergistic effect, effectively can solve the defect that this position is arranged negligible amounts lower than surrounding plane, blast cap and caused cloth wind bad, improve the fluid effect of lime-ash near runoff notch, reduce gathering of bulk slag and coke button, thus significantly reduce the stifled slag frequency at runoff notch place, guarantee stable operation and the security reliability of boiler.
They are two years old, that can be stretched back and forth by setting above biomass recirculating fluidized bed boiler air distribution plate runoff notch discloses slag head, make its in time to runoff notch position formed bulk slag and coke button carry out physical agitation, can automatically smash to pieces by dust, sandstone, the high-temperature fusion slagging scorification that the impurity such as rice hull ash produce, and by iron wire, iron nail the like waste drops and is formed and gathers and put up a bridge, coordinate the lasting purging of fluidized wind simultaneously, both ensure that boiler slag removal was unblocked all the time, again reduce the labour intensity of operating personnel, also extend the shutdown maintenance cycle, thus significantly reduce boiler operatiopn cost.
They are three years old, be retracted in outer tube inner chamber by slag head will be disclosed when biomass recirculating fluidized bed boiler deslagging, and make the sidewall opening at the top and runoff notch of disclosing slag head coincide airtight, the scum pipe of runoff notch and below thereof can be returned to completely the state without any obstruction, stop fluidisation airduct and disclose the impact of slag head on tapping process; Further, because bulk slagging scorification is broken, tapping process operates in adverse circumstances without the need to workman, effectively prevent the generation jeopardizing personnel's personal safety accident, significantly improves boiler operating efficiency simultaneously.
In sum, the present invention effectively can improve the fluidization characteristic of biomass recirculating fluidized bed boiler runoff notch, significantly reduce the blocking frequency of runoff notch in boiler combustion running, not only can realize automatically disclosing slag under the situation of not blowing out, and the sky high cost manually disclosing slag can be saved, the frequency of boiler shutdown maintenance can also be reduced simultaneously, effectively improve security and the economy of boiler of power plant.
Accompanying drawing explanation
Fig. 1 is that a kind of biomass recirculating fluidized bed boiler air distribution plate discloses the structural representation of slag device in the state of stretching out automatically;
Fig. 2 discloses the structural representation of slag device at retracted mode automatically for air distribution plate shown in Fig. 1;
Fig. 3 is the combined amplifier structural representation of fluidisation airduct and outer tube in Fig. 1;
In figure: motor 1, gear 2, fluidisation airduct 3 (wherein: disclose slag head 31, fluidized wind outlet 32, fluidized wind entrance 33, tooth bar 34, fluidized wind control valve 35), outer tube 4 (wherein: cover manage-style entrance 41, cover manage-style outlet 42, cover manage-style control valve 43), heat sensor 5, air distribution plate 6, scum pipe 7, runoff notch 8, bed material 9, First air blast cap 10, boiler wind regime 11.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, apparatus and method of the present invention are described in further detail.
Biomass recirculating fluidized bed boiler air distribution plate shown in figure discloses slag device automatically, is arranged on runoff notch 8 place of the air distribution plate 6 of boiler, is positioned at scum pipe 7 side below runoff notch 8.It has the outer tube 4 favouring scum pipe 7 and arrange, this outer tube 4 is about 22 ~ 24 ° relative to the angle of inclination of scum pipe 7, the upper end mouth of pipe of this outer tube 4 is connected as a single entity by the sidewall opening of welding manner and runoff notch 8, and it is simple and compact for structure, it is minimum to take up room.
Being provided with in the inner chamber of outer tube 4 can the fluidisation airduct 3 of axial stretching, the upper end mouth of pipe end face weld of this fluidisation airduct 3 is connected to discloses slag head 31, this discloses the top shape of slag head 31 and the sidewall opening mating shapes of runoff notch 8, so that chimeric with sidewall airtight when it is retracted.2 ~ 4 fluidized wind outlets 32 are evenly offered at fluidisation airduct 3 upper end mouth of pipe sidewall, the injection direction of this fluidized wind outlet 32 is tilted down layout, the angle of inclination of itself and horizontal plane is designed to 10 ~ 12 °, itself and First air coordinated, the fluidized state in boiler can be made to reach best, prevent lime-ash from entering fluidisation airduct 3 simultaneously.
Mouth of pipe side, the lower end sidewall of fluidisation airduct 3 is provided with fluidized wind entrance 33, the pipeline of fluidized wind entrance 33 is provided with fluidized wind control valve 35, input and boiler wind regime 11 of this fluidized wind control valve 35 is connected.By the parameter such as wind speed, air quantity of on-line control fluidized wind, boiler fluid effect can be maintained lastingly and stablize; By sharing a wind regime, can effectively reduce boiler operatiopn cost.
The lower end mouth of pipe opposite side sidewall of fluidisation airduct 3 is provided with tooth bar 34, and this tooth bar 34 and gear 2 engagement fit, this gear 2 is connected with motor 1 by transmission mechanism.During work, starter motor 1 driven gear 2 positive and negative rotation, gear 2 drives fluidisation airduct 3 by tooth bar 34 again and discloses slag head 31 relative to outer tube 4 telescopic moving or the position resting on needs.
The lower end mouth of pipe sidewall of outer tube 4 is also provided with cover manage-style entrance 41, and the annulus between the upper end mouth of pipe of outer tube 4 and the outer wall of fluidisation airduct 3 then forming sleeves wind exports 42.The pipeline of above-mentioned cover manage-style entrance 41 is provided with cover manage-style control valve 43, the input of this cover manage-style control valve 43 is also connected with boiler wind regime 11.By the parameter such as wind speed, air quantity of on-line control cover manage-style, both can, as the supplementary formation cooperative effect of fluidized wind, lime-ash also can be stoped to enter circumferential weld space, and make the stretching motion of fluidisation airduct 3 in outer tube 4 reliable and stable; Meanwhile, cover manage-style also shares a wind regime, can save parts further and drop into, be convenient to equipment control.
In the present embodiment, scum pipe 7 sidewall below runoff notch 8 is also provided with heat sensor 5, heat sensor 5 adopts thermocouple that is with low cost, reliable operation, is connected with boiler control system by holding wire.By the temperature regime in heat sensor 5 Real-Time Monitoring scum pipe 7, and online data is transferred to boiler control system, for positive and negative rotation or the stopping of automatic control motor 1.
When above-mentioned biomass recirculating fluidized bed boiler air distribution plate discloses the work of slag device automatically, its concrete operation method comprises the steps:
1) when boiler normally runs, boiler control system can be rotated forward by motor 1 driven gear 2, gear 2 is made to drive tooth bar 34 straight line to move upward, thus make the slag head 31 of disclosing of fluidisation airduct 3 upper end mouth of pipe end face stretch out outer tube 4, and resting in the bed material 9 above runoff notch 8, fluidized wind outlet 32 height now on the mouth of pipe sidewall of fluidisation airduct 3 upper end is corresponding with First air blast cap 10 exit position on air distribution plate 6.Then, lower injection stream wind transmission is tilted to runoff notch 8 surrounding by fluidized wind outlet 32, guarantee that the injection direction of fluidized wind and the angle of inclination of horizontal plane are 8 ~ 12 °, and by fluidized wind control valve 35 and the co-operating of overlapping manage-style control valve 43 grade, the jet velocity of control flow check wind transmission is 1.6 ~ 1.8 times that the last wind blast cap 10 of air distribution plate 6 sprays First air speed, the injection air quantity of control flow check wind transmission is 2.8 ~ 3.2 times that single First air blast cap 10 sprays First air air quantity simultaneously, the First air that First air blast cap 10 on sprayed fluidized wind and air distribution plate 6 is sprayed acts synergistically, good fluid effect is formed near runoff notch 8.
2) when boiler needs deslagging, boiler control system can be reversely rotated by motor 1 driven gear 2, gear 2 is made to drive tooth bar 34 linear downward motion, thus make the slag head 31 of disclosing of fluidisation airduct 3 upper end mouth of pipe end face be retracted in outer tube 4 inner chamber, and guarantee that the sidewall opening at the top and runoff notch 8 of disclosing slag head 31 is fitted airtight completely, fluidisation airduct 3 and the obstruction of disclosing slag head 31 pairs of slagging channels can be stopped thus, guarantee the deslagging state that runoff notch 8 and scum pipe 7 reach best.
3) in boiler slag removal process, boiler control system can judge temperature parameter in the scum pipe 7 of heat sensor 5 collection online, when the temperature that heat sensor 5 gathers is lower than normal deslagging temperature, illustrate that scum pipe 7 deslagging is not smooth, the runoff notch 8 above scum pipe 7 occurs that slagging scorification blocks.Now boiler control system can pass through motor 1 driven gear 2 positive and negative rotation, gear 2 is made to drive tooth bar about 34 rectilinear motion, thus disclosing in the bed material 9 of slag head 31 above runoff notch 8 of fluidisation airduct 3 upper end mouth of pipe end face is stretched back and forth, preferably disclose 1.0 times that amplitude that slag head 31 stretches back and forth is First air blast cap 10 height, disclosing the frequency that slag head 31 stretches back and forth is 20 ~ 25 beats/min, by physical agitation, most bulk slagging scorification is smashed into pieces the fritter lime-ash being suitable for scum pipe 7 and passing through.Meanwhile, remain the state of fluidisation airduct 3 injection stream wind transmission, make it purge the lime-ash near runoff notch 8 continuously, thus make tapping process automatically, efficient, safety, economy.
Claims (23)
1. a biomass recirculating fluidized bed boiler air distribution plate discloses slag method automatically, it is characterized in that: the method be air distribution plate (6) runoff notch (8) sidewall opening place, favour scum pipe (7) arrange an outer tube (4) be connected with runoff notch (8) sidewall opening, and the extension type fluidisation airduct (3) that a band discloses slag head (31) and fluidized wind outlet (32) is set in outer tube (4) inner chamber, concrete operations comprise the steps:
1) when boiler is in normal operating condition, stretching in the bed material (9) of runoff notch (8) top by disclosing slag head (31), making fluidized wind outlet (32) height corresponding with First air blast cap (10) exit position on air distribution plate (6), by fluidisation airduct (3) to the wind transmission of runoff notch (8) surrounding injection stream, the First air that First air blast cap (10) on this fluidized wind and air distribution plate (6) is sprayed acts synergistically, to strengthen the fluid effect of lime-ash near runoff notch (8);
2) when boiler is in normal deslagging state, to disclose slag head (31) is retracted in outer tube (4) inner chamber, and make the sidewall opening at the top and runoff notch (8) of disclosing slag head (31) coincide airtight, affect to avoid its deslagging on scum pipe (7);
3) when deslagging blockage appears in boiler, to stretch disclosing slag head (31) back and forth physical agitation in the bed material (9) of runoff notch (8) top, make bulk slagging scorification broken, keep the state of fluidisation airduct (3) injection stream wind transmission simultaneously, its lime-ash continued near to runoff notch (8) is purged, thus realizes automatically disclosing slag.
2. biomass recirculating fluidized bed boiler air distribution plate according to claim 1 discloses slag method automatically, it is characterized in that: described step 1) in, the injection direction of control flow check wind transmission and the angle of inclination of horizontal plane are 0 ~ 25 °.
3. biomass recirculating fluidized bed boiler air distribution plate according to claim 2 discloses slag method automatically, it is characterized in that: described step 1) in, the injection direction of control flow check wind transmission and the angle of inclination of horizontal plane are 5 ~ 15 °.
4. biomass recirculating fluidized bed boiler air distribution plate according to claim 1 discloses slag method automatically, it is characterized in that: described step 1) in, the jet velocity of control flow check wind transmission 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 characterized in that: described step 1) in, the jet velocity of control flow check wind transmission 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 characterized in that: described step 1) in, the injection air quantity of control flow check wind transmission is 0.5 ~ 5.0 times that single First air blast cap (10) sprays First air air quantity.
7. biomass recirculating fluidized bed boiler air distribution plate according to claim 6 discloses slag method automatically, it is characterized in that: described step 1) in, the injection air quantity of control flow check wind transmission is 2.5 ~ 3.5 times that single First air blast cap (10) sprays First air air quantity.
8. biomass recirculating fluidized bed boiler air distribution plate according to claim 1 discloses slag method automatically, it is characterized in that: described step 3) in, control to disclose 0.5 ~ 1.5 times that slag head (31) amplitude flexible is back and forth First air blast cap (10) height.
9. biomass recirculating fluidized bed boiler air distribution plate according to claim 1 discloses slag method automatically, it is characterized in that: described step 3) in, the frequency controlling to disclose slag head (31) flexible is back and forth 10 ~ 30 beats/min.
10. biomass recirculating fluidized bed boiler air distribution plate according to claim 1 discloses slag method automatically, it is characterized in that: described step 3) in, judge whether runoff notch (8) blocks by the variations in temperature detected in scum pipe (7): when the temperature gathered is lower than normal deslagging temperature, illustrate that scum pipe (7) deslagging is not smooth, there is blocking in the runoff notch (8) of scum pipe (7) top, now starts to disclose slag head (31) and to stretch back and forth stirring.
11. 1 kinds of biomass recirculating fluidized bed boiler air distribution plates designed for realizing method described in claim 1 disclose slag device automatically, be arranged on runoff notch (8) place of air distribution plate (6), be positioned at scum pipe (7) side of runoff notch (8) below, it is characterized in that:
It comprises the outer tube (4) favouring scum pipe (7) and arrange, the upper end mouth of pipe of described outer tube (4) is connected with the sidewall opening of runoff notch (8), and the inner chamber of described outer tube (4) is provided with can the fluidisation airduct (3) of axial stretching; The upper end mouth of pipe end face of described fluidisation airduct (3) is provided with discloses slag head (31), describedly disclose the top shape of slag head (31) and the sidewall opening mating shapes of runoff notch (8), described fluidisation airduct (3) upper end mouth of pipe sidewall is provided with fluidized wind outlet (32); The mouth of pipe place, lower end of described fluidisation airduct (3) is provided with fluidized wind entrance (33), the lower end mouth of pipe sidewall of described fluidisation airduct (3) is provided with tooth bar (34), described tooth bar (34) and gear (2) engagement fit, described gear (2) is connected with motor (1) by transmission mechanism, thus drives fluidisation airduct (3) and disclose slag head (31) relative to outer tube (4) telescopic moving;
Described disclose slag head (31) stretch to when boiler normally runs air distribution plate (6) runoff notch (8) top bed material (9) in and described fluidized wind outlet (32) corresponding with the exit position of the First air blast cap (10) be arranged on air distribution plate (6); Described disclose slag head (31) to be retracted to when the normal deslagging of boiler in outer tube (4) and described in disclose slag head (31) the sidewall opening at top and runoff notch (8) coincide airtight; Described slag head (31) of disclosing realizes upper and lower telescopic moving when boiler slag removal blocks by the positive and negative rotation of motor (1), thus completes and automatically disclose slag action.
12. biomass recirculating fluidized bed boiler air distribution plates according to claim 11 disclose slag device automatically, it is characterized in that: the pipeline of described fluidized wind entrance (33) is provided with fluidized wind control valve (35).
13. biomass recirculating fluidized bed boiler air distribution plates according to claim 12 disclose slag device automatically, it is characterized in that: input and boiler wind regime (11) of described fluidized wind control valve (35) is connected.
14. biomass recirculating fluidized bed boiler air distribution plates according to claim 11 disclose slag device automatically, it is characterized in that: the lower end mouth of pipe sidewall of described outer tube (4) is provided with cover manage-style entrance (41), and the annulus forming sleeves wind between the upper end mouth of pipe of described outer tube (4) and the outer wall of fluidisation airduct (3) exports (42).
15. biomass recirculating fluidized bed boiler air distribution plates according to claim 14 disclose slag device automatically, it is characterized in that: the pipeline of described cover manage-style entrance (41) is provided with cover manage-style control valve (43).
16. biomass recirculating fluidized bed boiler air distribution plates according to claim 15 disclose slag device automatically, it is characterized in that: input and boiler wind regime (11) of described cover manage-style control valve (43) is connected.
17. biomass recirculating fluidized bed boiler air distribution plates according to claim 11 disclose slag device automatically, it is characterized in that: scum pipe (7) sidewall of described runoff notch (8) below is provided with heat sensor (5), described heat sensor (5) is connected with boiler control system by holding wire, thus controls the operation of motor (1).
18. biomass recirculating fluidized bed boiler air distribution plates according to claim 17 disclose slag device automatically, it is characterized in that: described heat sensor (5) is thermocouple.
19. biomass recirculating fluidized bed boiler air distribution plates according to claim 11 disclose slag device automatically, it is characterized in that: described fluidized wind outlet (32) is uniformly distributed along fluidisation airduct (3) upper end mouth of pipe sidewall.
20. biomass recirculating fluidized bed boiler air distribution plates according to claim 19 disclose slag device automatically, it is characterized in that: the injection direction of described fluidized wind outlet (32) is level or is tilted to lower layout, the angle of inclination of itself and horizontal plane is 0 ~ 25 °.
21. biomass recirculating fluidized bed boiler air distribution plates according to claim 20 disclose slag device automatically, it is characterized in that: the described fluidized wind outlet injection direction of (32) and the angle of inclination of horizontal plane are 5 ~ 15 °.
22. biomass recirculating fluidized bed boiler air distribution plates according to claim 11 disclose slag device automatically, it is characterized in that: described outer tube (4) is 15 ~ 40 ° relative to the angle of inclination of scum pipe (7).
23. biomass recirculating fluidized bed boiler air distribution plates according to claim 22 disclose slag device automatically, it is characterized in that: described 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 true CN105485672A (en) | 2016-04-13 |
| CN105485672B 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) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106016256A (en) * | 2016-07-12 | 2016-10-12 | 郑州锅炉股份有限公司 | Slag dropping device and circulating fluidized bed boiler |
| CN107418635A (en) * | 2017-07-27 | 2017-12-01 | 新奥科技发展有限公司 | A kind of dreg removing system, fluidized-bed gasification furnace and coal gasification Slagoff method |
| CN107543153A (en) * | 2017-10-25 | 2018-01-05 | 大唐鸡西第二热电有限公司 | Recirculating fluidized bed deslagging pipe device and dredging method |
| 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 |
| 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 (8)
| 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 |
| US20070227284A1 (en) * | 2006-03-28 | 2007-10-04 | Honda Motor Co., Ltd. | Shift drum apparatus and transmission including same |
| 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 |
-
2015
- 2015-12-24 CN CN201510992023.XA patent/CN105485672B/en active Active
Patent Citations (8)
| 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 |
| US20070227284A1 (en) * | 2006-03-28 | 2007-10-04 | Honda Motor Co., Ltd. | Shift drum apparatus and transmission including same |
| 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 |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106016256A (en) * | 2016-07-12 | 2016-10-12 | 郑州锅炉股份有限公司 | Slag dropping 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 |
| CN107418635A (en) * | 2017-07-27 | 2017-12-01 | 新奥科技发展有限公司 | A kind of dreg removing system, fluidized-bed gasification furnace and coal gasification Slagoff method |
| 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 |
| CN107543153A (en) * | 2017-10-25 | 2018-01-05 | 大唐鸡西第二热电有限公司 | Recirculating fluidized bed deslagging 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105485672B (en) | 2017-11-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105485672A (en) | Automatic residue poking method and device for wind distribution plate of biomass circulating fluidized bed boiler | |
| CN203628674U (en) | Whole-set hazardous waste incinerator device | |
| CN208804681U (en) | A kind of refuse pyrolysis gasification furnace sealing is into charging device | |
| CN205090381U (en) | Burning furnace is burnt to environment -friendly for refuse treatment | |
| CN102345862B (en) | Biomass particle combustion apparatus and combustion method for same | |
| CN206207433U (en) | A kind of incinerator | |
| CN102242935A (en) | Novel garbage and biomass fuel combustion furnace and combustion method | |
| CN104006392A (en) | Preparation type ash residue fusion device | |
| CN208234847U (en) | A kind of biomass carbonated destructive distillation purification recovery device | |
| CN207471564U (en) | Ashes cool down collection system | |
| CN111023127A (en) | Be used for boiler dust automatic control cleaning device of thermal power plant | |
| CN205939107U (en) | Biomass gasification burner | |
| CN206191598U (en) | Environment -friendly msw incineration jar | |
| CN108504369A (en) | A kind of biomass carbonated destructive distillation purification recovery device and method | |
| CN205535790U (en) | Two purge system , combustor and bituminous mixing plant of combustor | |
| CN104896480B (en) | A kind of bilingual processing unit of rubbish | |
| CN207471566U (en) | Biomass combustion boiler nozzle and ashes cooling system | |
| CN207501155U (en) | A kind of domestic waste incineration | |
| CN107246614A (en) | A kind of plasma fusion incinerator | |
| CN209524521U (en) | Reduce the refuse gasification combustion heat source furnace of dioxin | |
| CN110079364B (en) | Treatment method and treatment system for biomass gasification tar | |
| CN205893099U (en) | Coal -fired lime sleeve kiln combustor device | |
| CN106861328A (en) | A kind of biomass gasification fired device cleaning system | |
| CN207298914U (en) | One kind vortex rotary burning type biomass fuel boiler | |
| CN207922235U (en) | A kind of closed upright garbage incinerating system |
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 |