CN106642084A - Dual-register strong vortex melting combustor - Google Patents
Dual-register strong vortex melting combustor Download PDFInfo
- Publication number
- CN106642084A CN106642084A CN201611121604.7A CN201611121604A CN106642084A CN 106642084 A CN106642084 A CN 106642084A CN 201611121604 A CN201611121604 A CN 201611121604A CN 106642084 A CN106642084 A CN 106642084A
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- Prior art keywords
- air
- pipe
- air pipe
- secondary air
- combustion
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C7/00—Combustion apparatus characterised by arrangements for air supply
- F23C7/002—Combustion apparatus characterised by arrangements for air supply the air being submitted to a rotary or spinning motion
- F23C7/004—Combustion apparatus characterised by arrangements for air supply the air being submitted to a rotary or spinning motion using vanes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C9/00—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber
- F23C9/06—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber for completing combustion
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
The invention relates to a dual-register strong vortex melting combustor, is suitable for an industrial boiler and a power plant boiler, and belongs a coal powder or biomass particle fuel combustor technology. The dual-register strong vortex melting combustor mainly consists of a strong vortex melting combustion chamber (1) and a dual-register cyclone generation device (2). The strong vortex melting combustion chamber (1) includes a primary air inlet (3), a secondary air inlet (4), a slag discharge port (5), a gradual shrinking transition pipe (6), a cylindrical cylinder (7) and an air replenishing port (14). The dual-register cyclone generation device (2) includes an inner secondary air pipe (8), an outer secondary air pipe (9), an inner secondary air cyclone blade (10), an outer secondary air cyclone blade (11) and a combustion product injecting pipe (12). The combustion product injecting pipe (12) is connected with the gradual shrinking transition pipe (6); the inner secondary air cyclone blade (10) is mounted between the inner secondary air pipe (8) and the combustion product injecting pipe (12); the outer secondary air pipe (9) is positioned on the outer side of the inner secondary air pipe (8); and the outer secondary air cyclone blade (11) is mounted between the outer secondary air pipe (9) and the inner secondary air pipe (8). The dual-register strong vortex melting combustor has the following advantages: the NOx emission is reduced when the fuel slagging problem in the combustion process is overcome.
Description
Technical field
The melting burner the present invention relates to a kind of double tune wind are vortexed by force.
Background technology
1., with rapid development of economy, the demand of the energy is also gradually increased.Coal resources in China very abundant,
Occupy critical role in energy resource structure.Meanwhile, China's biomass resource also very abundant, and biomass are used as a kind of New Energy
Source can theoretically realize that the zero-emission of carbon dioxide has caused the extensive concern of Chinese and overseas scholars.Therefore, it is efficient and rational to get profit
It is significant with coal and biomass resource.
2., because ignition temperature and fuel ash melting temperature are close to, fuel can produce in combustion slagging scorification, deposition
Risk.Its heat exchange efficiency is affected to reduce when clinker is bonded in heat exchanger surface, and the alkali metal in ash can also exchange heat pipe
Metal causes corrosion, affects the service life of heat exchanger tube.
3. fuel generates in combustion NOx, be discharged in air when running into hydrocarbon, in sunshine
There is photochemical reaction in the presence of ultraviolet, generate and there is irritating light blue smog, cause serious photochemical fog
Pollution.Additionally, acid rain will be formed together with sulfuric acid generated with oxysulfide by the nitric acid of NO_x formation etc..Environmental pollution
And the harm of health is extremely serious.
4. suppress stove in NOx formed air staged combustion technology be according in fuel in excess air coefficient α<1
Under the conditions of burn, effectively can reduce furnace outlet NOx discharge to design.It is divided to two sections to send into the air of burning, makes
Combustion process is divided into two regions：That is primary zone and burning-out zone.In primary zone (α<1), fuel burns under anoxic conditions, burning
Speed and ignition temperature are reduced, and the growing amount of heating power NOx reduces.Meanwhile, nitrogenous intermediate product HCN, the NH3 discharged in fuel bound nitrogen
Etc. can be reduced into N2, thus reduce the generation of NOx.In burning-out zone, fuel burns under excess oxygen.Some residual nitrogen
Compound oxidation is NOx, but because temperature is typically relatively low, NOx generation amount is also little.So, under the conditions of Researched of Air Staging Combustion Burning Pulverized Coal
Total NOx generation amount is to reduce.But, air staged combustion technology is suppressed due to the combustion process at initial stage, and burner hearth goes out
Mouth flue-gas temperature is raised and incomplete combustion loss increases, and appearance is especially more easy to when furnace height is less.If water-cooling wall
Reductant is nearby generated, water-cooled wall surface will appear from high temperature corrosion.
5. MILD combustion technologies are that the New combustion technique that educational circles proposes is burned between nearly 20 years.In MILD combustions
Under burning mode, high temperature gases recirculating carries out a certain degree of dilution to fuel and oxygen, and combustion reaction is diffused into wider in burner hearth
General space, ignition temperature peak value is suppressed, and causes thermal NO x growing amounts to substantially reduce.Meanwhile, high temperature gases recirculating meeting again
Reactant is preheated, is reached more than fuel self-ignition point, make fuel still to ensure stable burning under hypoxic atmosphere, this
MILD combustion technologies are enable to be applied to inferior fuel.
The content of the invention
The thought that space stage burns and MILD burns is combined using the mode of eddy combustion and slag tap, for fuel
（Biological particles, biomass powder and coal dust）The problem of clogging problems and NOx control aspects in combustion, it is proposed that
It is a kind of double to adjust wind to be vortexed by force melting burner, to overcome combustion process in clogging problems and reduce NOx emission.
The technical scheme that the present invention takes is as follows：
A kind of double to adjust wind to be vortexed by force melting burner, the burner is by vortex melt-combustion room by force（1）, it is double tune wind eddy flows fill
Put（2）Composition.Strong vortex melt-combustion room（1）Including a wind inlet（3）, secondary air inlet（4）, slag-drip opening（5）, it is tapered
Type transition conduit（6）, wind-supplying mouth（14）And cylindrical tube（7）.Double tune wind whirlwind generators（2）Including inner second air pipe
（8）, outer second air pipe（9）, inner second air swirl vane（10）, outer second air swirl vane（11）And combustion product playpipe
（12）.Wherein, combustion product playpipe（12）With gradual shrinkage transition conduit（6）It is connected, inner second air pipe（8）With combustion product injection
Pipe（12）Between inner second air swirl vane is installed（10）；Outer second air pipe（9）Positioned at inner second air pipe（8）Outside, and two
Outer second air swirl vane is installed between person（11）.
Slagging scorification and high NOx emission in solve the problems, such as combustion process, the using method of double tune wind vortex melting burner by force
For：1. by air preheat to 600 DEG C and more than, fuel is carry by First air high temperature gas flow and is mixed strongly with Secondary Air high temperature air
Burn under conditions of excess air coefficient α is for 0.6 ~ 0.9 after conjunction, in strong vortex melt-combustion room（1）It is middle to form so-called richness
Fuel region, lime-ash is by slag-drip opening（5）Discharge in liquid form；2. in strong vortex melt-combustion room（1）In imperfect combustion combustion
Material passes through combustion product playpipe with the flue gas for producing（12）Burner hearth is sprayed into, surplus air and stove needed for burning completely is reached
Thorax tail flue gas pass through inner second air pipe（8）With outer second air pipe（9）Burner hearth is sent into, after three is sufficiently mixed in burner hearth,
Excess air coefficient α be 1.05 ~ 1.2 under conditions of burn completely.By force vortex melting burner was running to control this pair of tune wind
Excess air factor α is 1.05 ~ 1.1 in journey.
The beneficial effects of the present invention is：In strong vortex melt-combustion room（1）It is middle to strengthen combustion by the way of vortex flow
The mixing of material and air, and theoretical temperature combustion is improved by way of air preheat, maintain strong vortex melt-combustion room（1）In
Temperature is more than ash fusion point temperature so that lime-ash can be with Jing slag-drip openings（5）Discharge in liquid form, and then overcome in combustion process
Clogging problems.Meanwhile, fuel burns under anoxic conditions, and the generation of NOx is suppressed by very big.In strong vortex melt-combustion room
（1）Middle generation containing imperfect combustion fuel and high-temperature flue gas adjusts wind whirlwind generators by double（2）With air and stove
Thorax tail flue gas are sufficiently mixed with cyclonic form, reduce ignition temperature, increase conversion zone, are entered while by fuel after-flame
One step inhibits the generation of thermal NO x.
Description of the drawings：
Fig. 1 is double structural representation for adjusting wind vortex melting burner by force, and Fig. 2 is the side view of vortex melt-combustion room by force.
Reference：The last 1 vortex melt-combustion room, 2 pairs of tune wind whirlwind generators, 3 wind inlets, 4 Secondary Airs enter
Mouth, 5 slag-drip openings, 6 gradual shrinkage transition conduits, 7 cylindrical tubes, 8 inner second air pipes, 9 outer second air pipes, 10 inner second air eddy flow leaves
Piece, 11 outer second air swirl vanes, 12 combustion product playpipes, 13 burner hearths, 14 wind-supplying mouths.
Specific embodiment：
Embodiments of the invention are illustrated with reference to accompanying drawing.
Propose it is a kind of double adjust wind to be vortexed by force melting burner, the burner is by vortex melt-combustion room by force（1）, double tune wind
Whirlwind generator（2）Composition.Strong vortex melt-combustion room（1）Including a wind inlet（3）, secondary air inlet（4）, deslagging
Mouthful（5）, gradual shrinkage transition conduit（6）, wind-supplying mouth（14）And cylindrical tube（7）.Double tune wind whirlwind generators（2）Including,
Inner second air pipe（8）, outer second air pipe（9）, inner second air swirl vane（10）, outer second air swirl vane（11）And burning
Product playpipe（12）.Its combustion product playpipe（12）With gradual shrinkage transition conduit（6）It is connected, inner second air pipe（8）With burning
Product playpipe（12）Between inner second air swirl vane is installed（10）；Outer second air pipe（9）Positioned at inner second air pipe（8）Outward
Side, and outer second air swirl vane is installed between the two（11）.
During by air preheat to 600 DEG C and the above, First air（Account for entering strong vortex melt-combustion room（1）In total air
The 25% of amount）Carry fuel and pass through a wind inlet（3）Into strong vortex melt-combustion room（1）In, Secondary Air（Account for into by force
Vortex melt-combustion room（1）The 75% of middle total air）By secondary air inlet（4）Into strong vortex melt-combustion room（1）In, by force
Burn under conditions of excess air coefficient α is for 0.6 ~ 0.9 after strong mixing.Afterbody in increase melt-combustion cylinder is vortexed,
Part preheated air can be by wind-supplying mouth（14）Middle entrance.Due to air preheat to 600 DEG C and more than, theory can be greatly improved
Ignition temperature, in running, strong vortex melt-combustion room（1）Middle temperature can reach more than 1500 DEG C, lime-ash Jing slag-drip openings（5）
Discharge in liquid form.Flue gas containing combustible component sequentially passes through gradual shrinkage transition conduit（6）With combustion product playpipe（12）
Into burner hearth（13）.
The surplus air reacted with combustible component in flue gas and burner hearth tail flue gas are by inner second air pipe（8）It is secondary with outer
Airduct（9）Into through inner second air swirl vane（10）With outer second air swirl vane（11）With in strong vortex melt-combustion
Room（1）The flue gas of middle generation is by cigarette under conditions of 1.01 ~ 1.2 in excess air factor α into strong eddy airstream in freeze profile
Combustible component reacts completely in gas.This pair adjust wind by force vortex melting burner in running excess air factor α be 1.05 ~
1.1。
Claims (8)
1. it is a kind of double to adjust wind to be vortexed by force melting burner, by vortex melt-combustion room by force（1）, it is double tune wind whirlwind generators（2）
Composition.
2. strong vortex melt-combustion room according to claim 1（1）Can be horizontal type structure or vertical structure, it is also possible to be situated between
In vertical and horizontal incline structure form.
3. strong vortex melt-combustion room according to claim 1（1）Including a wind inlet（3）, secondary air inlet（4）、
Slag-drip opening（5）, gradual shrinkage transition conduit（6）And cylindrical tube（7）；Double tune wind whirlwind generators（2）Including inner second air
Pipe（8）, outer second air pipe（9）, inner second air swirl vane（10）, outer second air swirl vane（11）And combustion product injection
Pipe（12）.
4. combustion product playpipe according to claim 2（12）With strong vortex melt-combustion room（1）In gradual shrinkage mistake
Cross pipe（6）It is connected, inner second air pipe（8）Positioned at combustion product playpipe（12）Outside, inner second air pipe（8）With combustion product spray
Penetrate pipe（12）Between inner second air swirl vane is installed（10）；Outer second air pipe（9）Positioned at inner second air pipe（8）Outside, and
Outer second air swirl vane is installed between the two（11）.
5. by force vortex melting burner excess air factor in running is 1.05 to double tune wind according to claim 1
~1.1；Wherein vortex melt-combustion room by force（1）Middle excess air factor is 0.6 ~ 0.9；Double tune wind whirlwind generators（2）It is hollow
Gas excess coefficient is 1.01 ~ 1.2.
6. a wind inlet can be used in running according to claim 2（3）And wind-supplying mouth（14）In appoint
Meaning is several controlling the melt-combustion room that is vortexed by force（1）Ruuning situation.
7. air according to claim 3 and burner hearth tail flue gas enter double tune wind whirlwind generators（2）In mode
Have：A. inner second air pipe（8）It is air-supplied, outer second air pipe（9）Supply burner hearth tail flue gas（Supply species in two airducts can
To exchange）；B. inner second air pipe（8）And outer second air pipe（9）Feed the gaseous mixture of burner hearth tail flue gas and air；c.
Inner second air pipe（8）And outer second air pipe（9）It is air-supplied；D. inner second air pipe（8）Burner hearth tail flue gas are fed with sky
The gaseous mixture of gas, outer second air pipe（9）Supply burner hearth tail flue gas（Supply species in two sleeves can be exchanged）.
8. pair tune wind fuel by force used by vortex melting burner can be coal dust and biomass fuel (powder or shaping
Grain).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611121604.7A CN106642084B (en) | 2016-12-08 | 2016-12-08 | It is a kind of double that wind is adjusted to be vortexed by force melting burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611121604.7A CN106642084B (en) | 2016-12-08 | 2016-12-08 | It is a kind of double that wind is adjusted to be vortexed by force melting burner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106642084A true CN106642084A (en) | 2017-05-10 |
| CN106642084B CN106642084B (en) | 2019-07-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611121604.7A Active CN106642084B (en) | 2016-12-08 | 2016-12-08 | It is a kind of double that wind is adjusted to be vortexed by force melting burner |
Country Status (1)
| Country | Link |
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| CN (1) | CN106642084B (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87212370U (en) * | 1987-10-16 | 1988-08-10 | 南京工学院 | Pre-burning burner for anthracite duff |
| JPH0237201A (en) * | 1988-07-27 | 1990-02-07 | Kawasaki Heavy Ind Ltd | Cyclone coal burning equipment with precombustor |
| JPH0240404A (en) * | 1988-07-29 | 1990-02-09 | Kawasaki Heavy Ind Ltd | Cyclone coal burner |
| CN2229036Y (en) * | 1995-06-28 | 1996-06-12 | 北京科能达机电新技术公司 | Small burner |
| CN101324334A (en) * | 2008-07-28 | 2008-12-17 | 上海题桥纺织染纱有限公司 | Low NOx liquid state slag-off double-eddy flow coal-powder combustor |
| CN102353049A (en) * | 2011-08-10 | 2012-02-15 | 深圳东方锅炉控制有限公司 | Stable combustion device for pulverized coal ignition |
| CN202328211U (en) * | 2011-11-23 | 2012-07-11 | 陕西升基利科技有限公司 | Multi-element powder flow state slagging cyclone burner |
| CN102607018A (en) * | 2012-03-02 | 2012-07-25 | 中国计量学院 | Graded air-feed dual-swirled pulverized coal industrial furnace combustor |
| CN202902268U (en) * | 2012-01-04 | 2013-04-24 | 刘柏谦 | Multi-nozzle pulverized coal combustion device |
| CN103148477A (en) * | 2013-02-26 | 2013-06-12 | 李延新 | Powder-screwing-in type pulverized coal combustion machine |
| CN103727532A (en) * | 2013-12-25 | 2014-04-16 | 李延新 | Spiral feeding and central reverse flame type pulverized coal gasification combustion machine |
| CN104406161A (en) * | 2014-11-17 | 2015-03-11 | 北京联优创展科技有限公司 | Coal-fired boiler flue gas backflow and supplement burning device |
-
2016
- 2016-12-08 CN CN201611121604.7A patent/CN106642084B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87212370U (en) * | 1987-10-16 | 1988-08-10 | 南京工学院 | Pre-burning burner for anthracite duff |
| JPH0237201A (en) * | 1988-07-27 | 1990-02-07 | Kawasaki Heavy Ind Ltd | Cyclone coal burning equipment with precombustor |
| JPH0240404A (en) * | 1988-07-29 | 1990-02-09 | Kawasaki Heavy Ind Ltd | Cyclone coal burner |
| CN2229036Y (en) * | 1995-06-28 | 1996-06-12 | 北京科能达机电新技术公司 | Small burner |
| CN101324334A (en) * | 2008-07-28 | 2008-12-17 | 上海题桥纺织染纱有限公司 | Low NOx liquid state slag-off double-eddy flow coal-powder combustor |
| CN102353049A (en) * | 2011-08-10 | 2012-02-15 | 深圳东方锅炉控制有限公司 | Stable combustion device for pulverized coal ignition |
| CN202328211U (en) * | 2011-11-23 | 2012-07-11 | 陕西升基利科技有限公司 | Multi-element powder flow state slagging cyclone burner |
| CN202902268U (en) * | 2012-01-04 | 2013-04-24 | 刘柏谦 | Multi-nozzle pulverized coal combustion device |
| CN102607018A (en) * | 2012-03-02 | 2012-07-25 | 中国计量学院 | Graded air-feed dual-swirled pulverized coal industrial furnace combustor |
| CN103148477A (en) * | 2013-02-26 | 2013-06-12 | 李延新 | Powder-screwing-in type pulverized coal combustion machine |
| CN103727532A (en) * | 2013-12-25 | 2014-04-16 | 李延新 | Spiral feeding and central reverse flame type pulverized coal gasification combustion machine |
| CN104406161A (en) * | 2014-11-17 | 2015-03-11 | 北京联优创展科技有限公司 | Coal-fired boiler flue gas backflow and supplement burning device |
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| Publication number | Publication date |
|---|---|
| CN106642084B (en) | 2019-07-26 |
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Effective date of registration: 20211116 Address after: 150000 Wanyou Tun, Wanyou village, Wanbao Town, Songbei District, Harbin City, Heilongjiang Province Patentee after: Heilongjiang helte biomass energy development Co., Ltd Address before: 150000 No. 92, xidazhi street, Nangang District, Harbin City, Heilongjiang Province Patentee before: Harbin Institute of Technology |
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