CN106765076A - A kind of regulatable vortex burner - Google Patents
A kind of regulatable vortex burner Download PDFInfo
- Publication number
- CN106765076A CN106765076A CN201710031174.8A CN201710031174A CN106765076A CN 106765076 A CN106765076 A CN 106765076A CN 201710031174 A CN201710031174 A CN 201710031174A CN 106765076 A CN106765076 A CN 106765076A
- Authority
- CN
- China
- Prior art keywords
- air
- temperature sensor
- wind snout
- central shaft
- air passage
- 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
- F23D—BURNERS
- F23D1/00—Burners for combustion of pulverulent fuel
- F23D1/02—Vortex burners, e.g. for cyclone-type combustion apparatus
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
The invention discloses a kind of regulatable vortex burner, including First air passage, inner second air passage, the outer second air passage for from inside to outside sequentially coaxially setting；A wind snout is slidably connected in First air passage interior sealing；Horizontally disposed first pull bar is fixed with a wind snout rear end, the rear end of the first pull bar is stretched out outside First air passage and is slidably connected with the sealing of First air passage, the first temperature sensor is fixedly arranged at the front end with a wind snout, second temperature sensor is fixedly arranged at the front end with inner second air spout and/or outer second air spout；First hydraulic cylinder, Hydraulic Station are externally provided with First air passage, the piston rod of first hydraulic cylinder is fixedly connected with the rear end of the first pull bar, and the Hydraulic Station controls the movable of the piston rod of first hydraulic cylinder according to the temperature signal of the first temperature sensor and second temperature sensor；So as to ensure that coal dust catches fire in good time, suppress the generation of nitrogen oxides, while it also avoid burner burns out generation with spout coking phenomenon.
Description
Technical field
The invention belongs to technical field of boiler combustion, more particularly to a kind of regulatable vortex burner.
Background technology
Turbulent burner rotates by Secondary Air, forms thermal source of the high temperature recirculation zone as stabilization, makes breeze airflow timely
Stabilization burning of fighting.In order to reduce discharged nitrous oxides, in burner hearth use air staged combustion technology, about 40% it is secondary
Wind is used as burnout degree and is sprayed into burner hearth by upper furnace position, and the rotatory power of such turbulent burner Secondary Air is significantly cut
It is weak, it is difficult to form the suitable high temperature recirculation zone of size.The need for forming high temperature recirculation zone to meet stabilization burning, existing eddy flow combustion
Burner generally uses three kinds of methods：(1) First air uses rotation mode；(2) Pulverized Coal Concentration dress is installed in First air passage
Put；(3) overfire air port is by the way of step arrangement.First two method is at home and abroad answered on many turbulent burners
With such as Double-volute swirling burner, reinforcing igniting double Q-switched, EI-XCl (Enhanced Ignition-Axial
Control Low-NOx）Type is double to adjust wind spiral coal powder burner and LNASB（Low NOxAxial Swirl Burner）Type
Turbulent burner etc., achieves good effect, but due to the problem of combustion method, nitrogen is still suffered from actual applications
The problem that oxide emissions are higher, a wind snout and/or overfire air port burn out.The third method is using step arrangement
Overfire air port structure, central backflow is formed by way of inner second air and outer second air are rotated to First air step by step injection
Area.This method can cause two problems：（1）First air coal dust mixes with Secondary Air too early in First air nozzle（Or one
Secondary wind coal dust is by Secondary Air injection to Secondary Air flow region）, weaken the deep or light fractional combustion effect of fuel；（2）Step is arranged
Overfire air port structure, Secondary Air is participated in coal dust firing too early, weaken Researched of Air Staging Combustion Burning Pulverized Coal effect.The two problems
All it is unfavorable for suppressing NO_x formation, limits the lifting of turbulent burner removal of nitrogen oxide ability.Therefore, it is current this three
The method of kind limits the lifting that turbulent burner further reduces the ability of discharged nitrous oxides.
In order to solve the above problems, China Patent Publication No.：CN105737125A, discloses a kind of reinforcing concentrated type eddy flow
Coal burner, its First air for being mainly by being provided with one or more levels taper necking in First air channel outlet sprays
Mouthful, in First air passage be provided with taper pulverized coal concentrator and thick coal culm air-flow separating pipe to realize that reinforcing Pulverized Coal Concentration is imitated
Really, fractional combustion is realized, reduction discharged nitrous oxides purpose is reached, with progressive.But a wind snout and Pulverized Coal Concentration
Device is again to fix irremovable, and itself and vortex burner conventional at present are main by following shortcoming：
First, Pulverized Coal Concentration device is generally fixed in First air passage, and its position cannot be adjusted in actual motion.Coal dust is dense
There is considerable influence compression apparatus position in First air passage to outlet Pulverized Coal Concentration effect.Pulverized Coal Concentration setting position is away from First air
Channel outlet is excessively near, will strengthen Pulverized Coal Concentration effect, is conducive to coal powder ignition, but is easily caused coal powder ignition point excessively to press close to
Burner nozzle, it is likely that burn out burner nozzle and Pulverized Coal Concentration device.Pulverized Coal Concentration setting position goes out away from First air passage
Make a slip of the tongue remote, Pulverized Coal Concentration effect will be weakened, influence bias pulverized coal fractional combustion, so as to be unfavorable for suppressing the life of nitrogen oxides
Into.
Secondly, a wind snout is the critical component for controlling breeze airflow to mix with Secondary Air air-flow, current First air
Spout is also what fixed form was set, and its position cannot be adjusted in actual moving process, so this may result in two problems：
One is that breeze airflow mixes too early with Secondary Air air-flow, causes nitrogen oxides largely to generate；Two is breeze airflow and secondary general mood
Stream mixing too late, causes combustion instability.
3rd, the cyclone of current turbulent burner be traditionally arranged to be the tangential vane that can adjust blade pitch angle or
Person's axial blade, due to lack vortex burner is caught fire and combustion position monitoring, cannot basis in actual motion
Load variations, the change of ature of coal, air quantity change and furnace pressure fluctuation are adjusted to swirler blades angle.Therefore, mesh
Preceding cyclone does not play a part of to be adjusted blade pitch angle according to combustion position, causes combustion instability, burning
Spout burn out and spout coking problem generation.
Finally, due to lack vortex burner is caught fire and combustion position monitoring, while to spiral-flow powdered coal burning
Device catches fire on the low side with combustibility adjustment means.For Abnormal combustion situation, it is impossible to find in time and adjust, cause rotation at present
Flow coal-powder combustor often burns out or coking, has a strong impact on the safe operation of boiler.
Therefore, how to solve that existing vortex burner combustion instability, coal adaptability be poor, discharged nitrous oxides compared with
High, spout coking and burn out the problem for having turned into the urgent need to address.
The content of the invention
It is an object of the invention to provide a kind of regulatable vortex burner, realize to vortex burner
The monitoring caught fire with combustion position, with various firing optimization means, disclosure satisfy that in boiler load change, coal varitation, wind
Still ensured that during pressure oscillation in amount change and burner combustion stability, coal adaptability it is wide and it is low-nitrogen oxide discharging will
Ask；Effectively reduce burner nozzle coking simultaneously and burn out the probability of accident generation.The present invention is adopted to solve the above problems
The technical scheme for taking is：A kind of regulatable vortex burner, including the First air for from inside to outside sequentially coaxially setting is logical
Road, inner second air passage, outer second air passage, are provided with inner second air cyclone in inner second air passage, logical in outer second air
Outer second air cyclone is provided with road；Inner second air spout is provided with the port of export of inner second air passage, in outer secondary air channel
The port of export be provided with outer second air spout, the inner second air spout and outer second air spout are taper flared, interior secondary
The internal diameter of wind snout and outer second air spout becomes larger along First air airflow direction, be provided with First air passage with once
The wind snout that the sealing of wind vias inner walls is slidably connected a, wind snout is hollow sleeve；A wind snout rear end
Horizontally disposed first pull bar is fixed with, the rear end of first pull bar is stretched out outside First air passage and sealed with First air passage
It is slidably connected, the first temperature sensor is fixedly arranged at the front end with a wind snout, in inner second air spout and/or outer second air spout
It is fixedly arranged at the front end with second temperature sensor；First hydraulic cylinder, Hydraulic Station are externally provided with First air passage, the first hydraulic cylinder
Piston rod is fixedly connected with the rear end of the first pull bar, and the Hydraulic Station is according to the first temperature sensor and second temperature sensor
Temperature signal controls the movable of the piston rod of first hydraulic cylinder.
Preferably, the inner second air cyclone and outer second air cyclone are swirl vane tilt adjustable type
Cyclone, the swirl vane angle of inclination controller of cyclone is electrically connected with the first temperature sensor and second temperature sensor,
Swirl vane angle of inclination controller is according to the temperature signal of the first temperature sensor and second temperature sensor to eddy flow
Blade pitch angle is adjusted.
Preferably, the first pulverized coal concentrator being slidably connected with wind snout inwall is provided with a wind snout,
First pulverized coal concentrator rear end is fixed with horizontally disposed second pull bar, and the rear end of second pull bar is stretched out outside First air passage
And be slidably connected with the sealing of First air passage, it is fixedly arranged at the front end with three-temperature sensor in the first pulverized coal concentrator；In First air
Passage is externally provided with second hydraulic cylinder, and the piston rod of the second hydraulic cylinder is fixedly connected with the rear end of the second pull bar, the hydraulic pressure
Stand and control second hydraulic cylinder according to the temperature signal of the first temperature sensor, second temperature sensor and three-temperature sensor
Piston rod it is movable.
Preferably, first pulverized coal concentrator includes the first central shaft, and the left end of first central shaft passes through many
Reinforcing bar is fixed with slip ring, and the slip ring is slidably connected with a wind snout inwall, and the second pull bar is coaxially fixed on the first central shaft
Left end；Plane where multiple first supporting plates, the first supporting plate and the first center are uniformly provided with along the circumference of the first central shaft
The diameter parallel of axle, the outward flange of first supporting plate becomes step by step to the distance of the first central shaft along First air airflow direction
It is small, one or more levels taper necking, described one are fixed with successively along First air airflow direction on the outward flange of the first supporting plate
Level or the internal diameter of multi-stage taper necking diminish step by step along First air airflow direction, the most imperial palace of one or more levels taper necking
Footpath is less than an internal diameter for wind snout.
Preferably, the right-hand member in a wind snout is connected with the second pulverized coal concentrator, and second pulverized coal concentrator includes
Second central shaft, the left end of second central shaft is fixed on a right-hand member for wind snout by many reinforcing bars；Along the second center
The circumference of axle is uniformly provided with the diameter parallel of plane where multiple second supporting plates, the second supporting plate and the second central shaft, described
The outward flange of the second supporting plate diminishes step by step to the distance of the second central shaft along First air airflow direction, in the outer of the second supporting plate
Be fixed with one or more levels taper necking successively along First air airflow direction on edge, one or more levels taper necking it is interior
Footpath diminishes step by step along First air airflow direction, and the maximum inner diameter of one or more levels taper necking is interior less than wind snout
Footpath.
Preferably, the right-hand member in a wind snout is connected with the second pulverized coal concentrator, and second pulverized coal concentrator includes
Second central shaft, the left end of second central shaft is fixed on a right-hand member for wind snout by many reinforcing bars；Along the second center
The circumference of axle is uniformly provided with the diameter parallel of plane where multiple second supporting plates, the second supporting plate and the second central shaft, described
The outward flange of the second supporting plate diminishes step by step to the distance of the second central shaft along First air airflow direction, in the outer of the second supporting plate
Be fixed with one or more levels taper necking successively along First air airflow direction on edge, one or more levels taper necking it is interior
Footpath diminishes step by step along First air airflow direction, and the maximum inner diameter of one or more levels taper necking is interior less than wind snout
Footpath.
The advantageous effect of present invention is that：
（1）Hydraulic Station is according to wind snout front end of the first temperature sensor and second temperature sensor real-time monitoring and interior first
The piston rod of the temperature information control first hydraulic cylinder in overfire air port is moved so as to drive First air to spray along fore-and-aft direction
Opening's edge fore-and-aft direction stretches, and to control the mixing opportunity of breeze airflow and Secondary Air air-flow in First air passage, realizes air
Fractional combustion, so as to ensure that coal dust catches fire in good time, suppresses the generation of nitrogen oxides, while it also avoid burner burning out and spout
The generation of coking phenomenon.
（2）Further, swirl vane angle of inclination controller is according to the first temperature sensor and second temperature sensor reality
When monitoring wind snout front end and inner second air spout in temperature information the size at swirl vane angle of inclination is adjusted
Control, adjusts the size of recirculating zone size, so as to ensure that coal dust catches fire in good time, suppresses the generation of nitrogen oxides, while it also avoid
Burner burns out the generation with spout coking phenomenon.
（3）Further, the first pulverized coal concentrator being slidably connected with wind snout inwall is provided with a wind snout,
Hydraulic Station is according to wind snout front end of the first temperature sensor and second temperature sensor real-time monitoring and inner second air spout
The piston rod of interior temperature information control second hydraulic cylinder is moved so as to drive the first pulverized coal concentrator along preceding along fore-and-aft direction
Rear direction is moved, further the Pulverized Coal Concentration effect of the breeze airflow of control First air channel outlet, realizes that coal powder light-dark is classified
Burning, so as to ensure that coal dust catches fire in good time, suppresses the generation of nitrogen oxides, while it also avoid burner burning out and spout coking
The generation of phenomenon.
（4）Further, the right-hand member in a wind snout is connected with the second pulverized coal concentrator, further to increase above-mentioned regulation and control
A wind snout right-hand member is strengthened to Pulverized Coal Concentration effect and First air breeze airflow and the mixing opportunity of Secondary Air air-flow in mode
Coal powder light-dark fractional combustion and Researched of Air Staging Combustion Burning Pulverized Coal, further suppress the generation of nitrogen oxides.
It is also possible to take a regulation and control for wind snout front and back position, the regulation and control at swirl vane angle of inclination, the first coal
One or more modes in the setting of the situation monitoring of powder inspissator and the second pulverized coal concentrator are regulated and controled, to enter
Mixing opportunity, recirculating zone size and the coal dust that one step controls the breeze airflow and Secondary Air air-flow in First air passage are dense
Contracting effect, so as to ensure that coal dust catches fire in good time, suppresses the generation of oxynitrides, while it also avoid burner burning out and spout
The generation of coking phenomenon.
Brief description of the drawings
Fig. 1 is the structural representation of vortex burner in embodiment 1 and embodiment 2；
Fig. 2 is the structural representation of vortex burner in embodiment 3；
Fig. 3 is the structural representation of pulverized coal concentrator；
Fig. 4 is the structural representation of vortex burner in embodiment 4.
Specific embodiment
The present invention is further described below in conjunction with the accompanying drawings.
Embodiment 1：
As shown in figure 1, the present invention includes the First air passage 3, inner second air passage 9, outer two that from inside to outside sequentially coaxially set
Secondary wind passage 7, inner second air cyclone 5 is provided with inner second air passage 9, and outer second air is provided with outer secondary air channel 7
Cyclone 6；Inner second air spout 10 is provided with the port of export of inner second air passage 9, is provided with the port of export of outer secondary air channel 7
Outer second air spout 11, the inner second air spout 10 and outer second air spout 11 are taper flared, inner second air spout
10 and the internal diameter of outer second air spout 11 become larger along the First air air-flow A directions of motion；Be provided with the First air passage 3 with
The wind snout 4 that the inner wall sealing of First air passage 3 is slidably connected a, wind snout 4 is hollow sleeve；In First air spray
4 rear ends of mouth are fixed with horizontally disposed first pull bar 2, in order to ensure the uniform force of wind snout 4 setting two symmetrical above and below
First pull bar 2, the rear end of first pull bar 2 is stretched out outside First air passage 3 and is slidably connected with the sealing of First air passage 3,
One time wind snout 4 is fixedly arranged at the front end with the first temperature sensor 8, is fixed in inner second air spout 10 or the front end of outer second air spout 11
There is second temperature sensor 12；First hydraulic cylinder 1 and hydraulic pressure for controlling first hydraulic cylinder 1 are externally provided with First air passage 3
Stand, the piston rod of the first hydraulic cylinder 1 is fixedly connected with the rear end of the first pull bar 2, and the Hydraulic Station is passed according to the first temperature
The temperature signal of sensor 8 and second temperature sensor 12 controls the movable of the piston rod of first hydraulic cylinder 1.
After coal powder ignition burns, the first temperature sensor 8 and second temperature sensor wind snout 4 of 12 real-time monitoring
Temperature information is simultaneously transferred to Hydraulic Station by temperature in front end and inner second air spout 10, when a front end of wind snout 4 and interior two
When temperature in secondary wind snout 10 occurs abnormal, the piston rod of hydraulic pressure stand control first hydraulic cylinder 1 along fore-and-aft direction movement from
And drive a wind snout 4 to move along the longitudinal direction and be adjusted.When the first temperature sensor 8 and second temperature sensor 12 are supervised
When the temperature of survey is too low, it is unfavorable for that breeze airflow catches fire in good time, the backward directions of wind snout 4 can be controlled by hydraulic cylinder 1
It is mobile, the breeze airflow A in First air passage 3 is mixed in advance with inner second air air-flow B, outer second air air-flow C, so that returning
Stream Qu Bian great, it is ensured that coal dust catches fire and stablizes burning in good time.When the first temperature sensor 8 and the monitoring temperature of second temperature sensor 12
When too high, it be easily caused burner nozzle coking or burn out, a forward direction of wind snout 4 can be controlled by hydraulic cylinder 1
It is mobile, the breeze airflow A in First air passage 3 is postponed with inner second air air-flow B, outer second air air-flow C and mix, so that returning
Stream area diminishes, and makes coal powder ignition point away from burner nozzle to protect burner nozzle not to be burned or coking；Meanwhile, coal dust
Air-flow A is also beneficial to suppress the generation of nitrogen oxides with inner second air air-flow B, the postponement of outer second air air-flow C.By above-mentioned side
Formula is so as to control the coal dust in First air passage 3 with inner second air air-flow B, the mixing opportunity of outer second air air-flow C, it is ensured that coal dust
Catch fire in good time, suppress the generation of nitrogen oxides, also avoid inner second air spout 10 and outer second air spout 11 from burning the hair of phenomenon
It is raw.
Embodiment 2：
As shown in figure 1, electing inner second air cyclone 5 and outer second air cyclone 6 as rotation on the basis of the structure of embodiment 1
The cyclone of blade pitch angle adjustable type is flowed, it is internal including swirl vane angle of inclination controller, and the swirl vane inclines
Rake angle controller is electrically connected with the first temperature sensor 8 and second temperature sensor 12, the swirl vane angle of inclination control
Device processed is adjusted according to the temperature signal of the first temperature sensor 8 and second temperature sensor 12 to swirl vane angle of inclination
Section.
After coal powder ignition burns, the first temperature sensor 8 and second temperature sensor wind snout 4 of 12 real-time monitoring
Temperature information is simultaneously transferred to swirl vane angle of inclination controller by temperature in front end and inner second air spout 10, works as First air
When temperature in the front end of spout 4 and inner second air spout 10 occurs abnormal, swirl vane angle of inclination controller is revolved by changing
The size for flowing blade pitch angle is adjusted.When the first temperature sensor 8 and the monitoring temperature of second temperature sensor 10 are too low
When, show that coal powder ignition is postponed or combustion instability, inner second air can be controlled by swirl vane angle of inclination controller
The swirl vane angle of inclination of cyclone 5 and outer second air cyclone 6 diminishes, and makes inner second air air-flow B, outer second air air-flow C
Swirl strength becomes big, so that recirculating zone becomes large-sized, it is ensured that coal dust catches fire stabilization burning in good time, while being also beneficial to suppress nitrogen
The generation of oxide.When the first temperature sensor 8 and the too high monitoring temperature of second temperature sensor 12, burner is easily caused
Spout coking burns out.Inner second air cyclone 5 and outer second air can be controlled by swirl vane angle of inclination controller
The swirl vane angle of inclination of cyclone 6 becomes big, inner second air air-flow B, outer second air air-flow C swirl strengths is diminished, so that
Recirculating zone size diminishes, so that fire location is away from burner nozzle, prevents burner nozzle from burning out or coking.By upper
State mode and change the size of recirculating zone size by controlling inner second air air-flow B, outer second air air-flow C swirl strengths, it is ensured that coal
Powder catches fire in good time, suppresses the generation of nitrogen oxides, also avoids inner second air spout 10 and outer second air spout 11 from burning phenomenon
Occur.
It is of course also possible in taking the regulation and control of front and back position of wind snout 4 and the regulation and control at swirl vane angle of inclination
One or two modes are regulated and controled.
Embodiment 3：
As shown in Figures 2 and 3, it is provided with and First air in a wind snout 4 on the basis of embodiment 1 or the structure of embodiment 2
The first pulverized coal concentrator that the inwall of spout 4 is slidably connected, is fixed with horizontally disposed second and draws in the first pulverized coal concentrator rear end
Bar 18, the rear end of second pull bar 18 is stretched out outside First air passage 3 and is slidably connected with the sealing of First air passage 3, first
Pulverized coal concentrator is fixedly arranged at the front end with three-temperature sensor 24；Second hydraulic cylinder 19, described second are externally provided with First air passage 3
The piston rod of hydraulic cylinder 19 is fixedly connected with the rear end of the second pull bar 18, and the Hydraulic Station is according to the first temperature sensor 8, second
The temperature signal of temperature sensor 12 and three-temperature sensor 24 controls the movable of the piston rod of second hydraulic cylinder 19.
Wherein, first pulverized coal concentrator includes the first central shaft 17, and the left end of first central shaft 17 is by more
Root reinforcing bar 16 is fixed with slip ring 13, and the slip ring 13 is slidably connected with an inwall of wind snout 4, and the second pull bar 18 is coaxially fixed on
The left end of the first central shaft 17；Multiple first supporting plates 20, the first supporting plate 20 are uniformly provided with along the circumference of the first central shaft 17
The diameter parallel of place plane and the first central shaft 17, the distance of the outward flange of first supporting plate 20 to the first central shaft 17
Diminish step by step along First air air-flow A directions, be fixed with successively along First air air-flow A directions on the outward flange of the first supporting plate 20
One or more levels taper necking 15, the internal diameter of one or more levels taper necking 15 diminishes step by step along First air air-flow A directions,
The maximum inner diameter of one or more levels taper necking 15 is less than an internal diameter for wind snout 4.
After coal powder ignition burns, the first temperature sensor 8, second temperature sensor 12 and three-temperature sensor 24 are real
When front end of wind snout 4 of monitoring, in inner second air spout 10 and the first pulverized coal concentrator temperature information and by temperature information
Hydraulic Station is transferred to, when exception occur in the front end of wind snout 4, interior and the first pulverized coal concentrator the temperature of inner second air spout 10
When, the piston rod of hydraulic pressure stand control second hydraulic cylinder 19 is moved so as to drive the first pulverized coal concentrator along front and rear along fore-and-aft direction
Direction movement is adjusted.When the front end of wind snout 4, interior and the first pulverized coal concentrator the temperature of inner second air spout 10 are too low
When, show coal powder ignition too late or combustion instability, the first pulverized coal concentrator forward direction can be controlled by hydraulic cylinder 19
It is mobile, to strengthen Pulverized Coal Concentration effect, most of breeze airflow is entered the Central backflow area of high-temperature low-oxygen gas concentration, it is ensured that coal
Powder catches fire and stablizes burning in good time, while realizing the deep or light fractional combustion of fuel, reaches the purpose for reducing nitrogen oxides.When First air spray
4 front ends of mouth, interior and the first pulverized coal concentrator the temperature of inner second air spout 10 exceed pulverized coal concentrator and the heat-resisting temperature of vent material
When spending, it is easily caused pulverized coal concentrator and burner nozzle burns out.Can by hydraulic cylinder 19 control the first pulverized coal concentrator to
Rear direction is moved, and to improve Pulverized Coal Concentration effect, so that fire location is away from burner nozzle, prevents pulverized coal concentrator and combustion
Burner spout burns out.Through the above way so as to control breeze airflow concentrated effect in good time, it is ensured that coal dust catches fire and stablizes burning, prevents
Only pulverized coal concentrator and burner nozzle burn out, while realizing the deep or light fractional combustion of fuel, reach the purpose for reducing nitrogen oxides
It is of course also possible to take the regulation and control of the front and back position of wind snout 4, the regulation and control at swirl vane angle of inclination and first coal dust
One or more modes in the regulation and control of the position of inspissator are regulated and controled.
Embodiment 4：
As shown in figure 4, the right-hand member in a wind snout 4 on the basis of the structure of embodiment 3 is connected with the second pulverized coal concentrator, institute
The structure for stating the second pulverized coal concentrator is identical with the structure of the first pulverized coal concentrator, and second pulverized coal concentrator is included in second
Heart axle 22, the left end of second central shaft 22 is fixed on a right-hand member for wind snout 4 by many reinforcing bars 23；Along the second center
The circumference of axle 22 is uniformly provided with the diameter parallel of plane where multiple second supporting plates, the second supporting plate and the second central shaft 22,
The outward flange of second supporting plate diminishes step by step to the distance of the second central shaft 22 along First air air-flow A directions, at second
Be fixed with one or more levels taper necking 21 successively along First air air-flow A directions on the outward flange of fagging, it is described one or more levels
The internal diameter of taper necking 21 diminishes step by step along First air air-flow A directions, the maximum inner diameter of one or more levels taper necking 21
Less than an internal diameter for wind snout 4, before the first temperature sensor 8 preferably now can also be fixed on into the second pulverized coal concentrator
End.
Second pulverized coal concentrator further enhancing the Pulverized Coal Concentration effect in the exit of wind snout 4, work as coal powder ignition
After burning, the first temperature sensor 8 and real-time monitoring the second pulverized coal concentrator front end of second temperature sensor 12 and inner second air
Temperature information is simultaneously transferred to Hydraulic Station by temperature in spout 10, when in the second pulverized coal concentrator front end and inner second air spout 10
Temperature when occurring abnormal, Hydraulic Station drives a coal dust of wind snout 4 and second dense by controlling the piston rod of first hydraulic cylinder 1
Movement is adjusted contracting ring along the longitudinal direction.When the temperature that the first temperature sensor 8 and second temperature sensor 12 are monitored is too low
When, show coal powder ignition too late or combustion instability, the first pulverized coal concentrator forward direction can be controlled by hydraulic cylinder 19
It is mobile, to strengthen Pulverized Coal Concentration effect, most of breeze airflow is entered the Central backflow area of high-temperature low-oxygen gas concentration, it is ensured that coal
Powder catches fire and stablizes burning in good time, while realizing the deep or light fractional combustion of fuel and Researched of Air Staging Combustion Burning Pulverized Coal, reaching reduces nitrogen oxides
Purpose.When the temperature that the first temperature sensor 8 and second temperature sensor 12 are monitored is resistance to more than pulverized coal concentrator and vent material
During hot temperature, it is easily caused pulverized coal concentrator and burner nozzle burns out.First Pulverized Coal Concentration can be controlled by hydraulic cylinder 19
Device backward directions are moved, and to improve Pulverized Coal Concentration effect, so that fire location is away from burner nozzle, prevent pulverized coal concentrator
Burnt out with burner nozzle.Through the above way so as to control breeze airflow concentrated effect in good time, it is ensured that coal dust catches fire and stablizes combustion
Burn, prevent pulverized coal concentrator and burner nozzle from burning out, while realizing the deep or light fractional combustion of fuel and Researched of Air Staging Combustion Burning Pulverized Coal, reach
Reduce the purpose of nitrogen oxides
That is the regulation and control of the front and back position of wind snout 4, the regulation and control at swirl vane angle of inclination and first coal dust are being taken
One or more modes in the regulation and control of the position of inspissator regulated and controled on the basis of again in a right-hand member for wind snout 4
Connect the second pulverized coal concentrator, further increasing in above-mentioned control methods a right-hand member of wind snout 4 to Pulverized Coal Concentration effect and
Researched of Air Staging Combustion Burning Pulverized Coal.
In the description of the invention, it is to be understood that term "front", "rear", "left", "right", " level ", " interior ",
It, based on orientation shown in the drawings or position relationship, is only for ease of the description present invention that the orientation or position relationship of the instruction such as " outward " are
Described with simplifying, there must be specific orientation rather than the device or element for indicating or inferring meaning, be specific orientation structure
Make and operate, thus it is not intended that protecting the limitation of content to the present invention.
If the words such as " first ", " second " are used herein to limit parts, those skilled in the art should
This knows：" first ", the use of " second " are intended merely to facilitate the description present invention and simplify and describe, and do not state in addition such as,
Above-mentioned word does not have special implication.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
The present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：It still may be used
Modified with to the technical scheme described in foregoing embodiments, or equivalent carried out to which part technical characteristic,
But these modification or replace, do not make appropriate technical solution essence depart from various embodiments of the present invention technical scheme spirit and
Scope.
Claims (6)
1. a kind of regulatable vortex burner, including the First air passage, interior secondary for from inside to outside sequentially coaxially setting
Wind passage, outer second air passage, are provided with inner second air cyclone in inner second air passage, are provided with outer in outer secondary air channel
Secondary Air cyclone；Inner second air spout is provided with the port of export of inner second air passage, is set in the port of export of outer secondary air channel
There is an outer second air spout, the inner second air spout and outer second air spout are taper flared, inner second air spout and outer
The internal diameter of overfire air port becomes larger along First air airflow direction, it is characterised in that be provided with First air passage and one
The wind snout that secondary wind vias inner walls sealing is slidably connected, a wind snout is hollow sleeve；After a wind snout
End is fixed with horizontally disposed first pull bar, and the rear end of first pull bar stretches out outside First air passage and close with First air passage
Envelope is slidably connected, and the first temperature sensor is fixedly arranged at the front end with a wind snout, is sprayed in inner second air spout and/or outer second air
Mouth is fixedly arranged at the front end with second temperature sensor；First hydraulic cylinder, Hydraulic Station, the first hydraulic cylinder are externally provided with First air passage
Piston rod be fixedly connected with the rear end of the first pull bar, the Hydraulic Station is according to the first temperature sensor and second temperature sensor
Temperature signal control first hydraulic cylinder piston rod it is movable.
2. regulatable vortex burner according to claim 1, it is characterised in that the inner second air cyclone
With the cyclone that outer second air cyclone is swirl vane tilt adjustable type, the swirl vane angle of inclination of cyclone is controlled
Device processed is electrically connected with the first temperature sensor and second temperature sensor, and swirl vane angle of inclination controller is according to first
The temperature signal of temperature sensor and second temperature sensor is adjusted to swirl vane angle of inclination.
3. regulatable vortex burner according to claim 1 and 2, it is characterised in that in a wind snout
The first pulverized coal concentrator being slidably connected with wind snout inwall is provided with, level is fixed with the first pulverized coal concentrator rear end and is set
The second pull bar put, the rear end of second pull bar is stretched out outside First air passage and is slidably connected with the sealing of First air passage,
First pulverized coal concentrator is fixedly arranged at the front end with three-temperature sensor；Second hydraulic cylinder, described second are externally provided with First air passage
The piston rod of hydraulic cylinder is fixedly connected with the rear end of the second pull bar, and the Hydraulic Station is according to the first temperature sensor, second temperature
The temperature signal of sensor and three-temperature sensor controls the movable of the piston rod of second hydraulic cylinder.
4. regulatable vortex burner according to claim 3, it is characterised in that first pulverized coal concentrator
Including the first central shaft, the left end of first central shaft is fixed with slip ring by many reinforcing bars, and the slip ring sprays with First air
Intraoral wall is slidably connected, and the second pull bar is coaxially fixed on the left end of the first central shaft；It is uniformly provided with along the circumference of the first central shaft
Multiple first supporting plates, the diameter parallel of plane and the first central shaft, the outside of first supporting plate where the first supporting plate
Edge diminishes step by step to the distance of the first central shaft along First air airflow direction, along a general mood on the outward flange of the first supporting plate
Stream direction is fixed with one or more levels taper necking successively, and the internal diameter of one or more levels taper necking is along First air air-flow side
To diminishing step by step, the maximum inner diameter of one or more levels taper necking is less than an internal diameter for wind snout.
5. regulatable vortex burner according to claim 4, it is characterised in that in a right-hand member for wind snout
The second pulverized coal concentrator is connected with, second pulverized coal concentrator includes the second central shaft, and the left end of second central shaft leads to
Excessive root reinforcing bar is fixed on a right-hand member for wind snout；Multiple second supporting plates are uniformly provided with along the circumference of the second central shaft, the
The diameter parallel of plane where two supporting plates and the second central shaft, the outward flange of second supporting plate to the second central shaft away from
Diminish step by step from along First air airflow direction, one is fixed with successively along First air airflow direction on the outward flange of the second supporting plate
Level or multi-stage taper necking, the internal diameter of one or more levels taper necking diminish step by step along First air airflow direction, and described one
Level or the maximum inner diameter of multi-stage taper necking are less than an internal diameter for wind snout.
6. regulatable vortex burner according to claim 1 and 2, it is characterised in that in wind snout
Right-hand member is connected with the second pulverized coal concentrator, and second pulverized coal concentrator includes the second central shaft, a left side for second central shaft
End is fixed on a right-hand member for wind snout by many reinforcing bars；Multiple second is uniformly provided with along the circumference of the second central shaft to support
The diameter parallel of plane and the second central shaft, the outward flange to the second center of second supporting plate where plate, the second supporting plate
The distance of axle diminishes step by step along First air airflow direction, solid successively along First air airflow direction on the outward flange of the second supporting plate
Surely the internal diameter for having one or more levels taper necking, one or more levels taper necking diminishes step by step along First air airflow direction,
The maximum inner diameter of one or more levels taper necking is less than an internal diameter for wind snout.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710031174.8A CN106765076B (en) | 2017-01-17 | 2017-01-17 | Adjustable cyclone pulverized coal burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710031174.8A CN106765076B (en) | 2017-01-17 | 2017-01-17 | Adjustable cyclone pulverized coal burner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106765076A true CN106765076A (en) | 2017-05-31 |
| CN106765076B CN106765076B (en) | 2023-06-16 |
Family
ID=58945866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710031174.8A Active CN106765076B (en) | 2017-01-17 | 2017-01-17 | Adjustable cyclone pulverized coal burner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106765076B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110186036A (en) * | 2019-06-17 | 2019-08-30 | 华北电力大学 | A kind of low nitrogen turbulent burner of microfine coal heterogeneous reduction and remodeling method |
| CN111847909A (en) * | 2019-04-25 | 2020-10-30 | 中冶长天国际工程有限责任公司 | Spray gun, spray gun control method and lime kiln with spray gun |
| CN112594680A (en) * | 2020-12-16 | 2021-04-02 | 华能海南发电股份有限公司东方电厂 | Integrated primary air pipe system for preventing burning loss of cyclone pulverized coal burner |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101545632A (en) * | 2009-04-30 | 2009-09-30 | 深圳东方锅炉控制有限公司 | Micro oil pulverized coal burner |
| US20130112120A1 (en) * | 2011-05-27 | 2013-05-09 | Yuehua Li | Dense Phase Swirl Pulverized Coal Burner |
| CN105737145A (en) * | 2016-02-26 | 2016-07-06 | 郑州轻工业学院 | Reinforcement and concentration type cyclone pulverized coal burner |
| CN206496344U (en) * | 2017-01-17 | 2017-09-15 | 郑州轻工业学院 | A kind of regulatable vortex burner |
-
2017
- 2017-01-17 CN CN201710031174.8A patent/CN106765076B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101545632A (en) * | 2009-04-30 | 2009-09-30 | 深圳东方锅炉控制有限公司 | Micro oil pulverized coal burner |
| US20130112120A1 (en) * | 2011-05-27 | 2013-05-09 | Yuehua Li | Dense Phase Swirl Pulverized Coal Burner |
| CN105737145A (en) * | 2016-02-26 | 2016-07-06 | 郑州轻工业学院 | Reinforcement and concentration type cyclone pulverized coal burner |
| CN206496344U (en) * | 2017-01-17 | 2017-09-15 | 郑州轻工业学院 | A kind of regulatable vortex burner |
Non-Patent Citations (1)
| Title |
|---|
| 樊泉桂: "新型煤粉燃烧器的燃烧机理分析", 《广东电力》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111847909A (en) * | 2019-04-25 | 2020-10-30 | 中冶长天国际工程有限责任公司 | Spray gun, spray gun control method and lime kiln with spray gun |
| CN110186036A (en) * | 2019-06-17 | 2019-08-30 | 华北电力大学 | A kind of low nitrogen turbulent burner of microfine coal heterogeneous reduction and remodeling method |
| CN112594680A (en) * | 2020-12-16 | 2021-04-02 | 华能海南发电股份有限公司东方电厂 | Integrated primary air pipe system for preventing burning loss of cyclone pulverized coal burner |
| CN112594680B (en) * | 2020-12-16 | 2022-12-20 | 华能海南发电股份有限公司东方电厂 | Integrated primary air pipe system for preventing burning loss of cyclone pulverized coal burner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106765076B (en) | 2023-06-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101725969B (en) | Low-NOx pulverized coal burner | |
| CN101363625B (en) | Large speed ratio centrally powder-feeding cyclone burner for pulverized coal | |
| CN205807402U (en) | A kind of low-nitrogen oxide discharging vortex burner with surrounding air | |
| CN107606606A (en) | Powder " Ω " shape industrial coal powder boiler is given at a kind of center using flue gas recirculation | |
| CN209445351U (en) | A kind of low nitrogen coal burner of adjustable swirl blade | |
| CN102563640A (en) | Oil burner with high-efficiency burning and low pollution emission | |
| CN105465781A (en) | Low-nitrogen-oxide-emission swirl pulverized coal burner with surrounding air | |
| CN106765076A (en) | A kind of regulatable vortex burner | |
| WO2015103832A1 (en) | Classification strengthened low nox pulverized coal burner | |
| CN106765104A (en) | A kind of biological fuel gas three swirler air distribution low NO | |
| CN102305397A (en) | Low-NOX (nitrogen oxides) slag-tap pulverized coal combustion device with triple rotational air | |
| CN207584766U (en) | A kind of efficient industrial coal powder stove low NO | |
| CN107477572A (en) | Using the center feeding rotational flow coal dust burner of separation Secondary Air bilayer jet | |
| CN105605560B (en) | Micro- discharge pulverized coal combustion system | |
| CN105465780A (en) | Ultralow NOx pulverized coal burner | |
| CN103629663B (en) | Vortex burner | |
| CN201606876U (en) | Low-NOx coal burner | |
| CN206496344U (en) | A kind of regulatable vortex burner | |
| CN206145669U (en) | Swirling flow pulverized coal burner | |
| CN113339789A (en) | Coking-prevention pulverized coal burner with horseshoe-shaped turbulence teeth | |
| CN106439801B (en) | A kind of reverse spray type bluff body vortex burner | |
| CN205579544U (en) | Discharge pulverized coal combustion system a little | |
| CN108167823B (en) | Device with axially adjustable blades for preventing slag formation of burner nozzle | |
| CN206274163U (en) | Coal burner | |
| CN205535781U (en) | Take external separator's swirl flow combustion device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: No. 136, Kexue Avenue, high tech Industrial Development Zone, Zhengzhou City, Henan Province Applicant after: Zhengzhou University of light industry Address before: 450002 No. 5 Dongfeng Road, Jinshui District, Henan, Zhengzhou Applicant before: ZHENGZHOU University OF LIGHT INDUSTRY |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |