CN109708106A - A kind of straight-through pulverized coal burner - Google Patents
A kind of straight-through pulverized coal burner Download PDFInfo
- Publication number
- CN109708106A CN109708106A CN201811557802.7A CN201811557802A CN109708106A CN 109708106 A CN109708106 A CN 109708106A CN 201811557802 A CN201811557802 A CN 201811557802A CN 109708106 A CN109708106 A CN 109708106A
- Authority
- CN
- China
- Prior art keywords
- coal
- primary air
- air piping
- culm
- thin powdered
- 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
- 239000003245 coal Substances 0.000 title claims abstract description 132
- 238000010992 reflux Methods 0.000 claims description 21
- 239000002817 coal dust Substances 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 4
- 230000005619 thermoelectricity Effects 0.000 claims 1
- 238000002485 combustion reaction Methods 0.000 abstract description 29
- 230000001535 kindling effect Effects 0.000 abstract description 11
- 238000004939 coking Methods 0.000 abstract description 8
- 230000006978 adaptation Effects 0.000 abstract description 3
- 230000006872 improvement Effects 0.000 description 8
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 5
- 235000019504 cigarettes Nutrition 0.000 description 5
- 239000003546 flue gas Substances 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 230000009467 reduction Effects 0.000 description 5
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 210000004894 snout Anatomy 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000001464 adherent effect Effects 0.000 description 2
- 239000002671 adjuvant Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000003517 fume Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000003134 recirculating effect Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002802 bituminous coal Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 235000003642 hunger Nutrition 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 230000037351 starvation Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
Abstract
The invention discloses a kind of straight-through pulverized coal burners, including shell, pulverized coal concentrator, the thick coal culm primary air piping being connected is exported with the thick coal culm of pulverized coal concentrator, it is around in thick coal culm primary air piping partially circumferentially outer thin powdered coal primary air piping, secondary air channel, secondary air channel and thin powdered coal primary air piping in circumferentially opposed setting and are around in thick coal culm primary air piping rest part week outward, secondary air channel is located at the back-fire side of thick coal culm primary air piping, thick coal culm primary air piping spout end and thin powdered coal primary air piping spout end are arranged in spaced radial, thick coal culm primary air piping spout end and thin powdered coal primary air piping spout end are at the rear for being axially respectively positioned on secondary air channel spout end；The present invention can not only greatly improve itself steady combustion ability, efficiency of combustion and anti-coking ability, solve the contradiction of kindling steady combustion and flame undershoot ability, NOx emission can also be reduced, have the advantages that coal quality wide adaptation range, meet the needs of boiler for deeply peak regulation and burning low grade coal.
Description
Technical field
The present invention relates to a kind of straight-through pulverized coal burners, especially for the straight-through pulverized coal burner on W flame boiler.
Background technique
As China's wind-powered electricity generation, photoelectricity installed capacity increase, peak period power grid digestion capability is insufficient, and light limit is abandoned in recent abandonment
It is electric serious.For consumption new energy, higher depth peak modulation capacity requirement is proposed to fired power generating unit, and depth peak modulation capacity is general
Minimum load depending on unit.For boiler combustion system, it is important to improve boiler low load stable combustion ability, therefore want
Boiler low load stable combustion ability is continuously improved.
The energy resources feature in China's " rich coal, oil starvation, few gas ", so that China is interior still based on coal for quite a long time,
Be also required to more efficient science utilizes coal resources.The cascade utilization of coal is the side of China's energy conversion Land use systems at present
To based on being pyrolyzed, gasify, low volatile " carbon residue coal " is as high-grade clean fuel combustion power generation after pyrolysis.But " carbon residue
There are the features such as kindling is difficult, burn-up efficiency is low, NOx emission is higher in coal " combustion process.In addition with the market of coal and electric power
Change, various different types of coal supply-demand relationships are in fluctuation, and each power plant is to reduce cost of electricity-generating, and power plant always constantly looks for economic coal
Kind, this results in most power plant it is difficult to ensure that using single design coal for a long time, mentions to the coal adaptability of combustion apparatus
Higher requirement out.
W flame boiler is a kind of special chamber structure boiler for low-volatite coal, has stronger steady combustion ability.But
, more or less there is the following problem: 1) surely firing ability in the existing various straight-through pulverized coal burners applied to W flame boiler
Turning too early with flame, there are burner hearths to utilize insufficient contradiction, and flame is turned too early to be caused under efficiency of combustion reduction and burnout degree
Square NOx reduction space reduces, and NOx emission is caused to increase；2) First air kindling with Secondary Air be mixed into opportunity with a Secondary Air transport
Speed when row etc. is related, it is difficult to which accurately adjustment control, it is unfavorable to steady combustion and reduction NOx emission too early that Secondary Air is mixed into, and is mixed into
Too late cannot immediately air needed for aftercombustion it is equally unfavorable to steady combustion and after-flame etc.；3) the steady combustion ability of burner itself is not dashed forward
Out, it maintains high-temperature region (laying more wall with refractory lining, refracto) surely to fire mainly by boiler lower hearth, the easy coking of burner hearth and NOx higher etc. is caused to ask
Topic.Because coal quality and boiler structure reason W flame boiler are higher compared to the NOx emission concentration value of other type of furnaces, in order to meet more
Carry out stringenter minimum discharge requirement, many power plant's W flame boilers are planned to change burning one after another or mix burning bituminous coal, but for control fuel at
This usually needs burning low grade coal again, and the coal type change adaptability of existing combustion apparatus is caused to be difficult to meet the requirements.
Summary of the invention
The purpose of the present invention is being directed to the above-mentioned deficiency of the prior art, a kind of straight-through pulverized coal burner is provided, it can not only
Itself steady combustion ability, efficiency of combustion and anti-coking ability are greatly improved, solves the contradiction of kindling steady combustion and flame undershoot ability, also
NOx emission can be reduced, and ignition point is adjustable, have the advantages that coal quality wide adaptation range, meet boiler for deeply peak regulation and burnt bad
The demand of matter coal.
In order to achieve the above object, a kind of straight-through pulverized coal burner of the invention, the coal dust including shell, in shell
Inspissator, it is characterised in that further include the thick coal culm primary air piping being connected with the outlet of the thick coal culm of pulverized coal concentrator, be around in dense coal
Powder primary air piping partially circumferentially outer thin powdered coal primary air piping, the secondary air channel being connected with shell, secondary air channel and thin powdered coal one
Secondary air hose is in circumferentially opposed setting and is around in thick coal culm primary air piping rest part week outward, and it is primary that secondary air channel is located at thick coal culm
The back-fire side of air hose, thick coal culm primary air piping spout end and thin powdered coal primary air piping spout end are arranged in spaced radial, the two it
Between form reflux cavity, thick coal culm primary air piping spout end and thin powdered coal primary air piping spout end are axially being respectively positioned on secondary air channel
The rear at spout end；
In use, after the First air containing coal dust passes through pulverized coal concentrator, respectively from thick coal culm primary air piping and thin powdered coal First air
Pipe sprays, and Secondary Air is sprayed through secondary air channel, mixes, burns in burner hearth；Since a dense wind snout is located at burner centre,
Light first nozzle is located in burner outermost circumferential direction, one fan annular return space of formation between two strands of air-flows, and deep or light two strands
The adherent flowing respectively in sector reflux cavity of First air breeze airflow, the annular region among two strands of air-flows generates biggish
Negative pressure, can be by the hot fume in burner hearth because rolling up suction effect, flowing back into fan annular return cavity and heated simultaneously to two strands of air-flows
It can make its initial burning before spraying into burner hearth that can increase substantially in addition not mixing at this time with Secondary Air also in underload and combustion
Steady combustion ability when burning inferior coal；Overfire air port is located at dense First air back-fire side at fan annular, from back-fire side gradually to reflux
The breeze airflow gradually aftercombustion air of the kindling of part of cavity outlet, does not only hinder high temperature gases recirculating to back cavity
Guarantee steady combustion in vivo, Secondary Air has biggish momentum together with First air, and it is insufficient to solve W flame boiler flame undershoot momentum
Problem plays and improves burner outlet entirety air-flow rigidity, prevents the effects of boiler water wall coking, gradually mixes along flame travel
The Secondary Air entered forms the staged air distribution of burner internal, also helps reduction NOx emission；Breeze airflow kindling is in advance and whole
Air-flow rigidity reinforced extends burning time of the breeze airflow in burner hearth, is conducive to improve efficiency of combustion；
As a further improvement of the present invention, the thin powdered coal primary air piping entrance is tapered taper；It can prevent through deep or light
Light primary air velocity after separation is relatively low, further increases light First air air-flow to the reflux capability of high-temperature flue gas and prevents burner
Export coking ability；
As a further improvement of the present invention, the thin powdered coal primary air piping circumferentially around angle be greater than secondary air channel in week
To the angle surrounded；The proportion needs of primary and secondary air can be met；
As a further improvement of the present invention, air door is equipped in the entrance of secondary air channel；It can carry out air quantity adjusting；
As a further improvement of the present invention, the thick coal culm primary air piping spout end and thin powdered coal primary air piping spout end rear
Reflux cavity be connected with accessory channel, valve is equipped in accessory channel, orifice plate is equipped in back cavity body；Usual situation lower valve
Door is in close state, to guarantee the normal work of burner；It can also be by the aperture of control valve to fan annular return cavity
In amount as needed be passed through Secondary Air or the combustion adjuvants such as inertia furnace cigarette or suitable pure oxygen, returned for adjusting high-temperature flue gas in burner hearth
The size for flowing to the amount of reflux cavity, adjusts the intracorporal temperature of back cavity, the adjusting of ignition point is carried out, suitable for different coals
Matter meets the needs of boiler for deeply peak regulation and burning low grade coal；Orifice plate can guarantee what Secondary Air or inertia furnace cigarette or pure oxygen were sent into
Uniformity；
As a further improvement of the present invention, the thin powdered coal primary air piping spout end is equipped with several sprays being spaced in the circumferential
Mouthful；To realize that more thermal flue gas backs flow in reflux cavity；
As a further improvement of the present invention, bluff body is equipped in secondary air channel spout end；Primary and secondary air is appropriately extended
Mixing；
As a further improvement of the present invention, the periphery in the corresponding shell of thin powdered coal primary air piping is provided with circumference
Air hose；By being passed through suitable Secondary Air in circumference air hose, it can protect, cool down burner nozzle；
As a further improvement of the present invention, thermocouple is equipped in back cavity body；It is intracorporal by thermocouple measurement back cavity
Temperature, and the size of controlling opening of valve can control the temperature of different burning coals in suitable range；
In conclusion the present invention can not only greatly improve itself steady combustion ability, efficiency of combustion and anti-coking ability, it is steady to solve kindling
The contradiction of combustion and flame undershoot ability, can also reduce NOx emission, and ignition point is adjustable, have the advantages that coal quality wide adaptation range,
Meets the needs of boiler for deeply peak regulation and burning low grade coal.
Detailed description of the invention
Fig. 1 is the structure diagram of the embodiment of the present invention.
Fig. 2 is the C-C cross-sectional view of Fig. 1.
Fig. 3 is the A-A cross-sectional view of Fig. 1.
Fig. 4 is the B-B cross-sectional view of Fig. 1.
Fig. 5 is the bottom view of Fig. 1.
Fig. 6 is arrangement schematic diagram of the embodiment of the present invention on W flame boiler.
Specific embodiment
With reference to the accompanying drawing, the present invention is described in further detail.
A kind of straight-through pulverized coal burner of the embodiment, pulverized coal concentrator 2 and coal including shell 1, in shell 1
Thick coal culm primary air piping 3 that the thick coal culm outlet of powder inspissator 2 is connected, to be around in thick coal culm primary air piping 3 partially circumferentially outer light
Coal dust primary air piping 4, the secondary air channel 5 being connected with shell 1,4 entrance of thin powdered coal primary air piping are tapered taper, thin powdered coal
In 4 spout end of primary air piping by interval cavity 15 be equipped with several spouts 13 being spaced in the circumferential, pulverized coal concentrator 2 it is light
Discharge forms thin powdered coal between thin powdered coal primary air piping 4 and shell 1 between thin powdered coal primary air piping 4 and shell 1
First air channel；Secondary air channel 5 and thin powdered coal primary air piping 4 circumferentially opposed setting and be around in thick coal culm primary air piping 3 remaining
It is partially circumferentially outer, thin powdered coal primary air piping 4 circumferentially around angle account for about the 2/3 of circumference, secondary air channel 5 circumferentially around
Angle accounts for about the 1/3 of circumference, and air door 7 is equipped in the entrance of secondary air channel 5, is equipped with bluff body 11 in 5 spout end of secondary air channel；
As shown in fig. 6, secondary air channel 5 is located at the back-fire side (side i.e. far from 16 center of burner hearth) of thick coal culm primary air piping 3, thick coal culm
3 spout end of primary air piping and 4 spout end of thin powdered coal primary air piping are arranged in spaced radial, form reflux cavity 6 therebetween,
Interior thermocouple 12,3 spout end of thick coal culm primary air piping and the 4 spout end of thin powdered coal primary air piping of being equipped with of the cavity 6 that flows back is axial equal
Positioned at the rear at 5 spout end of secondary air channel, 3 spout end of thick coal culm primary air piping and 4 spout end of thin powdered coal primary air piping are in axial direction
Can be concordant or not concordant according to specific coal quality and concentration conditions, there is different kindling initial times；Secondary air channel 5 and shell 1
Outlet it is concordant；The reflux cavity 6 and auxiliary at 4 spout end rear of 3 spout end of thick coal culm primary air piping and thin powdered coal primary air piping
Channel 8 is connected, and valve 9 is equipped in accessory channel 8, is equipped with orifice plate 10 in reflux cavity 6；It is corresponding in thin powdered coal primary air piping 4
The periphery of shell 1 be provided with circumference air hose 14；
In use, after the First air containing coal dust enters 1 arrival end of shell, passes through pulverized coal concentrator 2, thick coal culm First air and light coal
Thin powdered coal First air channel of the powder First air respectively out of thick coal culm primary air piping 3 with 4 outside of thin powdered coal primary air piping sprays, greatly
Part Secondary Air is sprayed through secondary air channel 5, is mixed, is burnt in burner hearth, a small amount of Secondary Air is sprayed through circumference air hose 13；Due to
A dense wind snout is located at burner centre, and light first nozzle is located in burner outermost circumferential direction, is formed between two strands of air-flows
One fan annular return space, deep or light two strands of First air breeze airflows adherent flowing respectively in sector reflux cavity, to reflux
Air-flow has very strong Involving velocity in cavity 6, generates biggish negative pressure, can roll up the hot fume in burner hearth and inhale, flows back into
Two strands of breeze airflows heat in fan annular return cavity and its initial burning before spraying into burner hearth can be made, due to thick coal culm
3 spout end of primary air piping and 4 spout end of thin powdered coal primary air piping are at the rear for being axially respectively positioned on 5 spout end of secondary air channel, at this time
It is not mixed with Secondary Air also, the kindling in underload and burning low grade coal can be increased substantially and surely fire ability；Overfire air port
It is located at dense First air back-fire side at fan annular, the breeze airflow of the kindling of part gradually exported from back-fire side to reflux cavity 6
Gradually aftercombustion air does not hinder not only to guarantee steady combustion, Secondary Air and First air one in high temperature gases recirculating to reflux cavity 6
Rising has biggish momentum, solves the problems, such as that W flame boiler flame undershoot momentum is insufficient, plays and improves burner outlet integrally gas
Stream rigidity prevents the effects of boiler water wall coking, and along flame travel, gradually mixed Secondary Air forms dividing for burner internal
Level air-distribution also helps reduction NOx emission；Breeze airflow kindling shifts to an earlier date and whole air-flow rigidity reinforced, extends breeze airflow
Burning time in burner hearth is conducive to improve efficiency of combustion；
4 entrance of thin powdered coal primary air piping is tapered taper, the light primary air velocity after air-coal separating can be prevented relatively low, into one
Step improves light First air air-flow to the reflux capability of high-temperature flue gas and prevents burner outlet coking ability；Usual situation lower valve
9 are in close state, to guarantee the normal work of burner；It can also be by the aperture of control valve 9 to fan annular return cavity 6
In amount as needed be passed through a small amount of Secondary Air or the combustion adjuvants such as inertia furnace cigarette or suitable pure oxygen, for adjusting high temperature cigarette in burner hearth
Gas flows back into the size of the amount of reflux cavity, and the temperature in adjustment reflux cavity 6 carries out the adjusting of ignition point, or be suitable for not
Same coal quality, meets the needs of boiler for deeply peak regulation and burning low grade coal；Orifice plate 10 can guarantee Secondary Air or inertia furnace cigarette or pure
The uniformity that oxygen is sent into；
Several spouts 13 being spaced in the circumferential can realize that more thermal flue gas backs flow in reflux cavity；Bluff body 11 can suitably prolong
The mixing of long primary and secondary air；By being passed through suitable Secondary Air in circumference air hose 14, it can protect, cool down burner nozzle；It is logical
The temperature in the measurement reflux cavity 6 of thermocouple 12, and the size of 9 aperture of control valve are crossed, it can be by the temperature of different burning coals
It controls in suitable range.
This burner may be designed to the different shapes such as round, rectangular, using welding or flange after the production of burner sectional
Connection group is integral；The thick coal culm one time partition between wind snout and overfire air port can be isolated with single layer heat-resisting steel sheet and plate or bilayer
Centre folder is empty to be thickeied.
Claims (9)
1. a kind of straight-through pulverized coal burner, the pulverized coal concentrator including shell, in shell, it is characterised in that further include and coal
Thick coal culm primary air piping that the thick coal culm outlet of powder inspissator is connected is around in thick coal culm primary air piping partially circumferentially outer thin powdered coal
Primary air piping, the secondary air channel being connected with shell, secondary air channel in circumferentially opposed setting and are around in dense with thin powdered coal primary air piping
Coal dust primary air piping rest part week, secondary air channel was located at the back-fire side of thick coal culm primary air piping, thick coal culm primary air piping outward
Spout end and thin powdered coal primary air piping spout end are arranged in spaced radial, form reflux cavity, thick coal culm First air therebetween
Pipe spout end and thin powdered coal primary air piping spout end are at the rear for being axially respectively positioned on secondary air channel spout end.
2. a kind of straight-through pulverized coal burner according to claim 1, it is characterised in that: the thin powdered coal primary air piping entrance
Section is tapered taper.
3. a kind of straight-through pulverized coal burner according to claim 1 or 2, it is characterised in that: the thin powdered coal primary air piping
Circumferentially around angle be greater than secondary air channel circumferentially around angle.
4. a kind of straight-through pulverized coal burner according to claim 3, it is characterised in that: set in the entrance of secondary air channel
There is air door.
5. a kind of straight-through pulverized coal burner according to claim 4, it is characterised in that: the thick coal culm primary air piping spout
The reflux cavity at end and thin powdered coal primary air piping spout end rear is connected with accessory channel, and valve is equipped in accessory channel, is returning
It flows and is equipped with orifice plate in cavity.
6. a kind of straight-through pulverized coal burner according to claim 5, it is characterised in that: the thin powdered coal primary air piping spout
End is equipped with several spouts being spaced in the circumferential.
7. a kind of straight-through pulverized coal burner according to claim 5, it is characterised in that: the secondary air channel spout is set in end
There is bluff body.
8. a kind of straight-through pulverized coal burner according to claim 6 or 7, it is characterised in that: described in thin powdered coal First air
The periphery for managing corresponding shell is provided with circumference air hose.
9. a kind of straight-through pulverized coal burner according to claim 8, it is characterised in that: be equipped with thermoelectricity in back cavity body
It is even.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811557802.7A CN109708106B (en) | 2018-12-19 | 2018-12-19 | Direct-current pulverized coal burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811557802.7A CN109708106B (en) | 2018-12-19 | 2018-12-19 | Direct-current pulverized coal burner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109708106A true CN109708106A (en) | 2019-05-03 |
| CN109708106B CN109708106B (en) | 2023-10-24 |
Family
ID=66256763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811557802.7A Active CN109708106B (en) | 2018-12-19 | 2018-12-19 | Direct-current pulverized coal burner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109708106B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113339789A (en) * | 2021-06-11 | 2021-09-03 | 华北电力大学（保定） | Coking-prevention pulverized coal burner with horseshoe-shaped turbulence teeth |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2128340Y (en) * | 1992-06-02 | 1993-03-17 | 哈尔滨工业大学 | Concentrated coal powder burner |
| CN102235666A (en) * | 2010-04-27 | 2011-11-09 | 烟台龙源电力技术股份有限公司 | Pulverized coal burner and pulverized coal fired boiler comprising same |
| WO2012163107A1 (en) * | 2011-05-27 | 2012-12-06 | 上海锅炉厂有限公司 | Dense-phase swirl pulverized coal burner |
| US20130112120A1 (en) * | 2011-05-27 | 2013-05-09 | Yuehua Li | Dense Phase Swirl Pulverized Coal Burner |
| CN103162289A (en) * | 2013-03-11 | 2013-06-19 | 扬州晨光特种设备有限公司 | Rotational flow stopping block type pulverized coal concentrator |
| CN103672864A (en) * | 2013-12-31 | 2014-03-26 | 北京国电龙高科环境工程技术有限公司 | Upper-lower concentrated-diluted pulverized-coal burning device |
| CN103672885A (en) * | 2013-12-31 | 2014-03-26 | 北京国电龙高科环境工程技术有限公司 | Vertical thick and thin direct flow coal powder combustion device realizing primary air spray nozzle inside deflection |
| CN104654292A (en) * | 2013-11-25 | 2015-05-27 | 中国科学院上海高等研究院 | Space rich-lean type direct flow pulverized coal burner |
| CN209540875U (en) * | 2018-12-19 | 2019-10-25 | 东方电气集团东方锅炉股份有限公司 | A kind of straight-through pulverized coal burner |
-
2018
- 2018-12-19 CN CN201811557802.7A patent/CN109708106B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2128340Y (en) * | 1992-06-02 | 1993-03-17 | 哈尔滨工业大学 | Concentrated coal powder burner |
| CN102235666A (en) * | 2010-04-27 | 2011-11-09 | 烟台龙源电力技术股份有限公司 | Pulverized coal burner and pulverized coal fired boiler comprising same |
| WO2012163107A1 (en) * | 2011-05-27 | 2012-12-06 | 上海锅炉厂有限公司 | Dense-phase swirl pulverized coal burner |
| US20130112120A1 (en) * | 2011-05-27 | 2013-05-09 | Yuehua Li | Dense Phase Swirl Pulverized Coal Burner |
| CN103162289A (en) * | 2013-03-11 | 2013-06-19 | 扬州晨光特种设备有限公司 | Rotational flow stopping block type pulverized coal concentrator |
| CN104654292A (en) * | 2013-11-25 | 2015-05-27 | 中国科学院上海高等研究院 | Space rich-lean type direct flow pulverized coal burner |
| CN103672864A (en) * | 2013-12-31 | 2014-03-26 | 北京国电龙高科环境工程技术有限公司 | Upper-lower concentrated-diluted pulverized-coal burning device |
| CN103672885A (en) * | 2013-12-31 | 2014-03-26 | 北京国电龙高科环境工程技术有限公司 | Vertical thick and thin direct flow coal powder combustion device realizing primary air spray nozzle inside deflection |
| CN209540875U (en) * | 2018-12-19 | 2019-10-25 | 东方电气集团东方锅炉股份有限公司 | A kind of straight-through pulverized coal burner |
Non-Patent Citations (2)
| Title |
|---|
| 徐魁焱: "煤粉水平浓淡燃烧技术在电厂锅炉运行中的应用", 辽阳石油化工高等专科学校学报, no. 03 * |
| 马春元, 徐夕仁, 孙永平, 李京, 吴少华, 孙绍增, 李争起, 孙锐, 秦裕琨: "径向浓缩旋流煤粉燃烧器的特性及应用", 山东工业大学学报, no. 02 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113339789A (en) * | 2021-06-11 | 2021-09-03 | 华北电力大学（保定） | Coking-prevention pulverized coal burner with horseshoe-shaped turbulence teeth |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109708106B (en) | 2023-10-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107559821B (en) | The multiple-pass industrial coal powder boiler of flue gas recirculation and vortex burner overhead | |
| CN205807402U (en) | A kind of low-nitrogen oxide discharging vortex burner with surrounding air | |
| CN101694297A (en) | Forced-draft burner and method for regularizing side-combustion high-temperature preheated air of square-box furnace | |
| CN105465781A (en) | Low-nitrogen-oxide-emission swirl pulverized coal burner with surrounding air | |
| CN104595900A (en) | Low-nitrogen-oxide gas combustor and combustion method of combustor | |
| CN201475997U (en) | Coal dust burner with self-stabilizing capability, three-stage air-distribution and low NOx content | |
| CN204704817U (en) | A kind of low nitrogen oxide gas burner | |
| JPS6323442B2 (en) | ||
| CN209540875U (en) | A kind of straight-through pulverized coal burner | |
| CN109708106A (en) | A kind of straight-through pulverized coal burner | |
| CN105402723B (en) | A kind of coal-burning power plant's turbulent burner suitable for low order Blended Coal Combustion | |
| CN208652613U (en) | A kind of boiler secondary air subtube supply air system | |
| CN108413387B (en) | A kind of two-way double grading combustion technologies of pulverized-coal fired boiler | |
| WO2023202053A1 (en) | Pulverized coal deep low-oxygen combustion system | |
| CN108317539A (en) | A kind of boiler secondary air subtube supply air system | |
| CN206600793U (en) | A kind of coal-burning power plant's turbulent burner suitable for Blended Coal Combustion | |
| CN104154532A (en) | Center air ring concentrated type turbulent burner | |
| WO2021043241A1 (en) | Pulverized coal boiler with bottom combustor, and control method therefor | |
| CN110319437B (en) | Oxygen-enriched multi-flame rotational flow pulverized coal burner | |
| CN211011344U (en) | Cylinder type pulverized coal burner | |
| CN100427824C (en) | Adjacent angle displacement direct burner system | |
| CN210035475U (en) | Boiler burner | |
| CN209876904U (en) | Boiler low-temperature flue gas recirculation combustion system | |
| CN109237465B (en) | Cyclone burner and cyclone burner ventilation air methane spraying system | |
| CN207196495U (en) | Tai Ji vortex diffusion type low-nitrogen oxide discharging combustion head and its parallel-connection structure |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |