CN2844679Y - Deep Or Light And Hot Reflux Two-way Smooth Burning Powdered-coal Burner - Google Patents
Deep Or Light And Hot Reflux Two-way Smooth Burning Powdered-coal Burner Download PDFInfo
- Publication number
- CN2844679Y CN2844679Y CN 200520021926 CN200520021926U CN2844679Y CN 2844679 Y CN2844679 Y CN 2844679Y CN 200520021926 CN200520021926 CN 200520021926 CN 200520021926 U CN200520021926 U CN 200520021926U CN 2844679 Y CN2844679 Y CN 2844679Y
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- CN
- China
- Prior art keywords
- pulverized coal
- bias pulverized
- air
- coal
- flow
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- 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.)
- Expired - Lifetime
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- 239000003245 coal Substances 0.000 title claims abstract description 110
- 238000010992 reflux Methods 0.000 title claims abstract description 18
- 230000003068 static effect Effects 0.000 claims abstract description 15
- 230000002706 hydrostatic effect Effects 0.000 claims abstract description 4
- 239000000446 fuel Substances 0.000 claims description 12
- 238000002485 combustion reaction Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- 230000003134 recirculating effect Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 229910001208 Crucible steel Inorganic materials 0.000 description 2
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 2
- 239000003830 anthracite Substances 0.000 description 2
- 239000002802 bituminous coal Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 239000003077 lignite Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000036651 mood Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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Abstract
The utility model provides a kind of Deep Or Light And Hot Reflux Two-way Smooth Burning Powdered-coal Burner.It comprises the bias pulverized coal enriching apparatus that is connected with the circumference joint, the bias pulverized coal enriching apparatus comprises casing and is installed in the interior bias pulverized coal enricher of casing, be provided with the anti-even dividing plate of bias pulverized coal air-flow in the outlet of bias pulverized coal enriching apparatus, the rear portion of casing connects bias pulverized coal air-flow static balance chamber, connect bias pulverized coal air-flow spout behind the bias pulverized coal air-flow static balance chamber, bias pulverized coal air-flow static balance is provided with the porous hydrostatic balance plate in the chamber.The utlity model has that flammability is stable, the low-load combustion-stabilizing ability strong, prevent the burner region slagging scorification, reduce advantages such as NOx discharge capacity.
Description
(1) technical field
The utility model relates to a kind of burner, specifically a kind of coal powder burner that adapts to station boiler.
(2) background technology
The energy is national economy basis fast.The primary energy of China is based on coal, and the coal electricity accounts for 3/4ths of total electric weight in the power industry of China, accounts for 27% of China's raw coal output.For a long time, the power station of China is complicated and changeable with coal, and most station boilers are actual coal-fired very big with the coal difference with boiler design, when the changeable and ature of coal variation of coal causes in the station boiler running high load capacity, and the slagging scorification of boiler furnace burner region.The furnace outlet temperature improves, the convection superheater overtemperature, and spray water flux increases.Station boiler is when underrun, and existing coal burner combustion instability must be thrown oily combustion-supporting.Have a strong impact on the safe and economical boiler operation.Power industry has also caused a large amount of environmental pollutions when national economy provides very strong driving force.According to statistics, 70% of China's urban atmospheric pollution derives from power industry, and these pollutions have caused heavy losses to national economy, and therefore, the disposal of pollutants problem that solves the power station is own extremely urgent.
Coal burner is that station boiler catches fire, surely combustion, anticlogging key, at present domestic employed coal burner can't separate simultaneously that rhymed formula boiler combustion stability is poor, problems such as boiler-burner zone slagging scorification, boiler-burner water wall high temperature corrosion and NOx discharge capacity height.Often only pay attention to solving one of them or several aspects problem.
(3) summary of the invention
Goal of the invention of the present utility model is to provide that a kind of flammability is stable, the low-load combustion-stabilizing ability is strong, prevent the burner region slagging scorification, reduce the Deep Or Light And Hot Reflux Two-way Smooth Burning Powdered-coal Burner of NOx discharge capacity.
The purpose of this utility model is achieved in that it comprises the bias pulverized coal enriching apparatus that is connected with the circumference joint, the bias pulverized coal enriching apparatus comprises casing and is installed in the interior bias pulverized coal enricher of casing, be provided with the anti-even dividing plate of bias pulverized coal air-flow in the outlet of bias pulverized coal enriching apparatus, the rear portion of casing connects bias pulverized coal air-flow static balance chamber, connect bias pulverized coal air-flow spout behind the bias pulverized coal air-flow static balance chamber, bias pulverized coal air-flow static balance is provided with the porous hydrostatic balance plate in the chamber.
The utility model can also comprise some architectural features like this:
1, " v " type ripple bluff body is installed in the bias pulverized coal air-flow spout.
2, be outside equipped with fuel surrounding air spout at bias pulverized coal air-flow spout.
3, cabinet wall has the abrasionproof pottery.
4, there is flange in " V " type ripple bluff body exit.
Advantage of the present utility model is mainly reflected in:
1, Deep Or Light And Hot Reflux Two-way Smooth Burning Powdered-coal Burner is a kind of straight-through pulverized coal burner that is suitable for the tangential firing station boiler, when heavy-duty service, slows down boiler-burner zone ash deposition propensity.Alleviate the high temperature corrosion of water-cooling wall.
2, strengthen the ablaze stability of boiler, when boiler load during at 50%ECR, Deep Or Light And Hot Reflux Two-way Smooth Burning Powdered-coal Burner catches fire stable, can oil-break smooth combustion.
3, reduce NOx discharge capacity 5%-12%.Belong to clean burning, alleviate the pollution of NOx environment.
4, adapt to all coal pulverizers and pulverized coal preparation system thereof.
5, according to the volatile matter situation of coal, the circumference fuel air is set,, adjusts one time the wind ignition point position, the combustion position of control coal burner by adjusting the size of circumference fuel air.Simultaneously deep or light spout is played the cooling protection effect.
6, Deep Or Light And Hot Reflux Two-way Smooth Burning Powdered-coal Burner is simple in structure, easy for installation, operation is adjustable.
(4) description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the A-A cutaway view of Fig. 1.
Fig. 3 is the right view of Fig. 1.
(5) specific embodiment
For a more detailed description to the utility model for example below in conjunction with accompanying drawing:
In conjunction with Fig. 1, the composition of Deep Or Light And Hot Reflux Two-way Smooth Burning Powdered-coal Burner comprises and the circumference joint 1 bias pulverized coal enriching apparatus 2 that is connected, the bias pulverized coal enriching apparatus comprises casing 4 and is installed in the interior bias pulverized coal enricher 3 of casing, be provided with the anti-even dividing plate 5 of bias pulverized coal air-flow in the outlet of bias pulverized coal enriching apparatus, the rear portion of casing connects bias pulverized coal air-flow static balance chamber 6, connect bias pulverized coal air-flow spout 8 behind the bias pulverized coal air-flow static balance chamber, bias pulverized coal air-flow static balance is provided with porous hydrostatic balance plate 7 in the chamber, and cabinet wall has abrasionproof pottery 11.
In conjunction with Fig. 2, the utility model second kind of embodiment also comprised the content of first kind of embodiment simultaneously, and its difference is to be equipped with " v " type ripple bluff body 9 in bias pulverized coal air-flow spout.
In conjunction with Fig. 3, the utility model the third embodiment has also comprised the content of first kind of embodiment simultaneously, and its difference is to be outside equipped with fuel surrounding air spout 10 at bias pulverized coal air-flow spout.
Know-why of the present utility model is: when concentration is about 0.4-0.5kg/kgair is that a wind breeze airflow enters the bias pulverized coal enriching apparatus by the circumference joint, under the effect of bias pulverized coal enricher, one time the wind breeze airflow is divided into deep or light two strands of breeze airflows, wherein one is the high concentration pulverized coal air-flow, the coal powder density of thick coal culm air-flow can reach 0.6-0.8kg/kgair, this strand air-flow is positioned at the side of waring oneself in front of a fire, and is arranged in the A zone position of Fig. 1.The coal powder density of another strand is very low, and the coal powder density of thin powdered coal air-flow is between 0.3-0.1kg/kgair, and this strand air-flow is arranged in the B zone position of Fig. 1.Tank material is a high-chromium wear-resistant cast steel, and the abrasionproof pottery is arranged in its HCR 〉=40 in A district casing, can increase the service life of bias pulverized coal enriching apparatus greatly, improves the device security reliability.
Be arranged in the anti-even dividing plate of bias pulverized coal enriching apparatus outlet bias pulverized coal air-flow, prevent that the thin powdered coal air-flow in the thick coal culm air-flow in A district and B district is even once more.Dense, light two strands of breeze airflows enter bias pulverized coal air-flow static balance chamber, the speed of thick coal culm air-flow is higher than thin powdered coal air velocity, the effect of static balance plate is exactly to make dense, thin powdered coal air-flow static balance, makes the speed of thick coal culm air-flow equate than thin powdered coal air velocity is regional.
Thick coal culm air-flow and thin powdered coal air-flow spray into burner hearth by bias pulverized coal air-flow spout, owing to the raising of coal powder density, can reduce the temperature of ignition point, reduce ignition heat, and flame propagation velocity is accelerated, and helps steady combustion.After the thick coal culm air-flow catches fire, light the thin powdered coal air-flow rapidly, realize bias combustion.In addition, the bias pulverized coal air-flow all departs from the stoichiometric ratio of easy generation NOx, and this has created advantage for suppressing NOx formation, generally can reduce the NOx discharge capacity about 5%-12%.Arrange " V " type ripple bluff body in bias pulverized coal air-flow spout, the flange in " V " type ripple bluff body exit has increased the size and the backflow exhaust gas volumn of recirculating zone, strengthens the steady combustion performance of burner.Because " V " type ripple bluff body is a waveform, at corrugated protruding place and recess, it is obviously staggered that Velocity Profiles is.The staggered contact area that has increased breeze airflow and backflow flue gas of this speed.With comparing for the linear reamer of no flange, the turbulent exchange coefficient on border, ten thousand recirculating zones has improved 80%-100% behind " V " type ripple bluff body, and the heat and the mass exchange of wind and recirculating zone have been strengthened in the exchange of this strong turbulent flow, and be very favourable to catching fire.Reflux area length L, Breadth Maximum B are respectively with the ratio of " V " type ripple bluff body thickness D: L/D=2.1, B/D=1.1, recirculating zone capacity of returns Q
ReturnWith primary air flow Q
1Ratio be Q
Return/ Q
1=10%.This has just formed the two-way steady combustion of deep or light ten hot refluxs.The thickness D of " V " type ripple bluff body and " V " type ripple bluff body are to the catch fire characteristics design of the outer peripheral distance H of bias pulverized coal air-flow spout according to coal, for anthracite, meager coal.D and H get big value, for bituminous coal, brown coal.D and H get the small value.
Arranged biasing fuel surrounding air spout outside bias pulverized coal air-flow spout, being provided with according to coal of fuel surrounding air spout decided, and for anthracite, meager coal fuel surrounding air spout is not set, considers to be provided with fuel surrounding air spout for bituminous coal, brown coal.The fuel surrounding air can prevent bias pulverized coal air-flow spout was separated and cooled off to coal dust from a general mood stream effect.Biasing fuel surrounding air has also weakened near the weak reducing atmosphere the back-fire side water-cooling wall, alleviates the ash deposition propensity in coal burner zone, also plays the effect of regulating a wind breeze airflow ignition point simultaneously.
The material of bias pulverized coal air-flow spout and fuel surrounding air spout is nickelic heat resisting cast steel, and its heat resisting temperature reaches about 1250 ℃.
Claims (8)
1, a kind of Deep Or Light And Hot Reflux Two-way Smooth Burning Powdered-coal Burner, it comprises the bias pulverized coal enriching apparatus that is connected with the circumference joint, it is characterized in that: the bias pulverized coal enriching apparatus comprises casing and is installed in the interior bias pulverized coal enricher of casing, be provided with the anti-even dividing plate of bias pulverized coal air-flow in the outlet of bias pulverized coal enriching apparatus, the rear portion of casing connects bias pulverized coal air-flow static balance chamber, connect bias pulverized coal air-flow spout behind the bias pulverized coal air-flow static balance chamber, bias pulverized coal air-flow static balance is provided with the porous hydrostatic balance plate in the chamber.
2, Deep Or Light And Hot Reflux Two-way Smooth Burning Powdered-coal Burner according to claim 1 is characterized in that: " v " type ripple bluff body is installed in the bias pulverized coal air-flow spout.
3, Deep Or Light And Hot Reflux Two-way Smooth Burning Powdered-coal Burner according to claim 1 and 2 is characterized in that: be outside equipped with fuel surrounding air spout at bias pulverized coal air-flow spout.
4, Deep Or Light And Hot Reflux Two-way Smooth Burning Powdered-coal Burner according to claim 1 and 2 is characterized in that: cabinet wall has the abrasionproof pottery.
5, Deep Or Light And Hot Reflux Two-way Smooth Burning Powdered-coal Burner according to claim 3 is characterized in that: cabinet wall has the abrasionproof pottery.
6, according to claim 1,2 or 5 described Deep Or Light And Hot Reflux Two-way Smooth Burning Powdered-coal Burners, it is characterized in that: there is flange in " V " type ripple bluff body exit.
7, Deep Or Light And Hot Reflux Two-way Smooth Burning Powdered-coal Burner according to claim 3 is characterized in that: there is flange in " V " type ripple bluff body exit.
8, Deep Or Light And Hot Reflux Two-way Smooth Burning Powdered-coal Burner according to claim 4 is characterized in that: there is flange in " V " type ripple bluff body exit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520021926 CN2844679Y (en) | 2005-11-11 | 2005-11-11 | Deep Or Light And Hot Reflux Two-way Smooth Burning Powdered-coal Burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520021926 CN2844679Y (en) | 2005-11-11 | 2005-11-11 | Deep Or Light And Hot Reflux Two-way Smooth Burning Powdered-coal Burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2844679Y true CN2844679Y (en) | 2006-12-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520021926 Expired - Lifetime CN2844679Y (en) | 2005-11-11 | 2005-11-11 | Deep Or Light And Hot Reflux Two-way Smooth Burning Powdered-coal Burner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2844679Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101187472B (en) * | 2007-12-07 | 2010-06-16 | 华中科技大学 | Low NOx pulverized coal burner |
| CN102287816A (en) * | 2011-07-20 | 2011-12-21 | 蒋振华 | Anti-coking burner for coal-powder boiler and boiler equipped with same |
| CN103017149A (en) * | 2012-12-28 | 2013-04-03 | 北京哈宜节能环保科技开发有限公司 | Pulverized coal combustion apparatus |
| CN103672862A (en) * | 2013-12-31 | 2014-03-26 | 北京国电龙高科环境工程技术有限公司 | Low-nitrogen combustion device without primary air and secondary air, and application method |
| 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 |
| CN103697463A (en) * | 2013-12-31 | 2014-04-02 | 北京国电龙高科环境工程技术有限公司 | Up-and-down thick-and-thin primary air concentrated distribution type combustion device |
| CN105546566A (en) * | 2016-01-28 | 2016-05-04 | 浙江宜清环境技术有限公司 | Stable combustion device for low volatile lean coal |
| CN110822419A (en) * | 2019-11-27 | 2020-02-21 | 上海交通大学 | Novel combustion device with blowout prevention port slagging function |
| CN112325284A (en) * | 2020-11-03 | 2021-02-05 | 哈尔滨锅炉厂有限责任公司 | Low-load stable-combustion burner |
-
2005
- 2005-11-11 CN CN 200520021926 patent/CN2844679Y/en not_active Expired - Lifetime
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101187472B (en) * | 2007-12-07 | 2010-06-16 | 华中科技大学 | Low NOx pulverized coal burner |
| CN102287816A (en) * | 2011-07-20 | 2011-12-21 | 蒋振华 | Anti-coking burner for coal-powder boiler and boiler equipped with same |
| CN103017149A (en) * | 2012-12-28 | 2013-04-03 | 北京哈宜节能环保科技开发有限公司 | Pulverized coal combustion apparatus |
| CN103697463B (en) * | 2013-12-31 | 2016-02-03 | 北京国电龙高科环境工程技术有限公司 | The burner of upper and lower deep or light First air centralized arrangement |
| 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 |
| CN103697463A (en) * | 2013-12-31 | 2014-04-02 | 北京国电龙高科环境工程技术有限公司 | Up-and-down thick-and-thin primary air concentrated distribution type combustion device |
| CN103672862A (en) * | 2013-12-31 | 2014-03-26 | 北京国电龙高科环境工程技术有限公司 | Low-nitrogen combustion device without primary air and secondary air, and application method |
| CN103672864B (en) * | 2013-12-31 | 2016-05-11 | 北京国电龙高科环境工程技术有限公司 | A kind of upper and lower gradation coal burner |
| CN103672862B (en) * | 2013-12-31 | 2016-05-18 | 北京国电龙高科环境工程技术有限公司 | A kind of low nitrogen combustion apparatus of dereliction Secondary Air and using method |
| CN105546566A (en) * | 2016-01-28 | 2016-05-04 | 浙江宜清环境技术有限公司 | Stable combustion device for low volatile lean coal |
| CN110822419A (en) * | 2019-11-27 | 2020-02-21 | 上海交通大学 | Novel combustion device with blowout prevention port slagging function |
| CN112325284A (en) * | 2020-11-03 | 2021-02-05 | 哈尔滨锅炉厂有限责任公司 | Low-load stable-combustion burner |
| CN112325284B (en) * | 2020-11-03 | 2022-07-15 | 哈尔滨锅炉厂有限责任公司 | Low-load stable-combustion burner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Harbin Power System Engineering & Research Institute Co., Ltd.of CNEEC Assignor: Cheng Qinggang Contract fulfillment period: 2008.9.26 to 2013.9.26 Contract record no.: 2008230000008 Denomination of utility model: Stabilized coal-fired powdery burner of two-way halftone and thermal reflux Granted publication date: 20061206 License type: Exclusive license Record date: 20081008 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.9.26 TO 2013.9.26; CHANGE OF CONTRACT Name of requester: HARBIN ELECTRICITY EQUIPMENT DESIGN INSTITUTE Effective date: 20081008 |
|
| ASS | Succession or assignment of patent right |
Owner name: HARBIN ELECTRICITY EQUIPMENT DESIGN INSTITUTE Free format text: FORMER OWNER: CHENG QINGGANG Effective date: 20091204 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20091204 Address after: No. 1, CXS street, Power District, Heilongjiang, Harbin: 150040 Patentee after: Harbin Power System Engineering & Research Institute Co., Ltd.of CNEEC Address before: Heilongjiang province Harbin city Xiangfang District Gongbin Road No. 566 Zhongshan Fuyuan 2 unit 701, zip code: 150036 Patentee before: Cheng Qinggang |
|
| CX01 | Expiry of patent term |
Granted publication date: 20061206 |
|
| EXPY | Termination of patent right or utility model |