CN101900322B - Dual-cylinder dual-return stroke staged combustion device - Google Patents
Dual-cylinder dual-return stroke staged combustion device Download PDFInfo
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- CN101900322B CN101900322B CN201010142305.8A CN201010142305A CN101900322B CN 101900322 B CN101900322 B CN 101900322B CN 201010142305 A CN201010142305 A CN 201010142305A CN 101900322 B CN101900322 B CN 101900322B
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Abstract
The invention relates to a dual-cylinder dual-return stroke staged combustion device which comprises an outer-layer cyclone combustion cylinder, a combustion spray gun which sprays fuel into the outer-layer cyclone combustion cylinder at high speed is arranged on the upper side surface of the outer-layer cyclone combustion cylinder, a one-time tangential air supply outlet is arranged on the side wall of the outer-layer cyclone combustion cylinder, an inner-layer cyclone combustion cylinder body is arranged in the outer-layer cyclone combustion cylinder, the side wall of the inner-layer cyclone combustion cylinder body and the side wall of the outer-layer cyclone combustion cylinder form a closed combustion interlayer, a flame through hole is arranged on the side wall of the inner-layer cyclone combustion cylinder body at the bottom part of the combustion interlayer, a slag removing port is arranged at the bottom part of the inner-layer cyclone combustion cylinder, and a residual slag tank is arranged at the slag removing port for containing falling ash slag after burnout. The dual-cylinder dual-return stroke staged combustion device has the following benefits: (1) the dual-layer structure can lead flame after fuel combustion to be turned upwards, thereby prolonging the retention time, realizing full combustion, leading the residual slag after the combustion to fall into the residual slag tank through the slag removing port, reducing the emissions of harmful substances and effectively reducing the environmental pollution.
Description
Technical field:
The present invention relates to a kind of combustion apparatus, being specially can a kind of dual-cylinder dual-return stroke staged combustion device of the inferior fuel such as burning low grade coal powder or cinder powder.
Background technology:
China is energy resource consumption big country, and in the wastage in bulk or weight of the national energy, coal occupies very large proportion, reaches more than 75%.Energy restructuring is all being carried out in countries in the world, to save the utilization of the existing energy to greatest extent, and alleviates the environmental pollution day by day increased the weight of.Energy-saving and emission-reduction situation is quite severe for China, and country also solves the problem trying every possible means by every possible means.In addition, along with rising steadily of fuel price, burned coal price is also sharply rising, particularly high-quality bituminous coal, and price is so high that to go against accepted conventions especially, largely improves the operating cost of enterprise.Therefore, more and more urgent to the needs of the boiler of burning smoke coal, station boiler or hot-blast furnace transformation.The burner of existing boiler or hot-blast stove adopts single flow list backhaul coal burner mostly, its characteristic is as follows: 1, only have single burning backhaul, fire stroke is short, can not Thorough combustion, cause certain thermal loss, particularly can not Thorough combustion coal dust inferior or cinder powder; 2, combustion flame can not rotate, and jet extended corner is little, and ability of entrainmenting is little, and the flammability of burner is poor, and burner hearth degree of filling is poor; 3, because DC burner outlet return district is very little, ignition condition is very poor, and the anthracite of burning low volatile is very difficult, extremely difficult especially for coal dust inferior; 4, insufficient owing to burning, discharge the damage ratio of environment comparatively large, can not environmental requirement be met.
Summary of the invention:
The deficiency that object of the present invention exists for the above burner, provide a kind of can burning low grade coal powder or cinder sweet smell, low emission, sufficient combustion a kind of dual-cylinder dual-return stroke staged combustion device.
The present invention is achieved in that a kind of dual-cylinder dual-return stroke staged combustion device, comprise outer cyclone firing cylinder, be provided with a burning spray gun sprayed at a high speed by fuel in outer cyclone firing cylinder the upper side of outer cyclone firing cylinder is minimum, the sidewall of outer cyclone firing cylinder is provided with an once tangential air outlet, internal layer cyclone firing cylindrical shell is provided with in described outer cyclone firing cylinder, airtight burning interlayer is formed between the sidewall of internal layer cyclone firing cylindrical shell and outer cyclone firing cylinder sidewall, the sidewall of the internal layer cyclone firing cylindrical shell of the bottom of burning interlayer is provided with a flame through hole, the bottom of internal layer cyclone firing cylinder is for removing cinder notch, except cinder notch is arranged with the lime-ash fallen after residue pool burns with dress.Second-time burning wall can be provided with at internal layer cyclone firing cylinder and boiler furnace junction, to catch unburnt fine particle, promote burning, reduce the discharge of dust and nitrogen oxide, described second-time burning wall is made up of column and crossbeam, crossbeam is connected between adjacent upright posts, the webbed filtration of shape.Ignited fuel is spurted in the burning interlayer between outer cyclone firing cylinder and internal layer cyclone firing cylinder by burning spray gun, under the tangential wind action that once tangential air outlet is sent into, the flame of fuel turns to lower burning in burning interlayer inward turning, then enter internal layer cyclone firing cylinder by flame through hole upwards to burn, finally enter in the burner hearth of boiler or hot-blast stove, the lime-ash of after-flame is by falling in residue pool except cinder notch.
The interior of described internal layer cyclone firing cylinder is provided with the tangential air intake duct of secondary, the tangential air intake duct of secondary is provided with air inlet so that be connected with blower fan, is provided with secondary tangent air inlet and communicates with the combustion chamber of internal layer cyclone firing cylinder in the tangential air intake duct of secondary.By blower fan to blowing cold air in the tangential air intake duct of secondary, the temperature of internal layer cyclone firing cylinder sidewall can be effectively reduced, improve the service life of sidewall; Effectively can supplement the oxygen required for the burning of internal layer cyclone firing cylinder simultaneously, make burning more abundant.
Described second-time burning wall is made up of column and crossbeam, and crossbeam is connected between adjacent upright posts, the webbed filtration of shape.
Compared with prior art, beneficial effect of the present invention is as follows:
(1), the sidewall of internal layer cyclone firing cylindrical shell and outer cyclone firing cylinder sidewall form airtight burning interlayer double-decker, after fuel combustion, flame can be turned upwards, extend the time of staying, sufficient combustion, residue after burning is by falling into residue pool except cinder notch, discharge of poisonous waste is few, effectively can reduce the pollution to environment.
(2), coal dust burns in burning interlayer, and burning interlayer two sides is hot wall with flues, makes sufficient combustion complete, solves the shortcoming of ignition difficulties.
(3) coal dust can be crossing in 30 ~ 60 ° of angles with air, and mixing fully, promotes burning.
(4) sidewall of internal layer cyclone firing cylindrical shell is provided with blowing cold air in the tangential air intake duct of secondary, the temperature of internal layer cyclone firing cylinder sidewall can be effectively reduced, extend the service life of sidewall; Effectively can supplement the oxygen required for the burning of internal layer cyclone firing cylinder simultaneously, make burning more abundant.
(5) there is secondary tangent air inlet in internal layer cyclone firing cylindrical shell, form second-time burning, effectively can reduce the discharge of nitrogen oxide.
(6) height can be reduced, easy for installation, be suitable for the transformation of used equipment, form two return structures.
(7) once tangential air intake and the tangential air intake of secondary to regulate arbitrarily, and flame export temperature can regulate on a large scale, convenient, flexible.
(6) adopt sandwich, heat release is abundant, and dead band is little, is suitable for the burning of coal dust inferior or cinder powder.
Accompanying drawing illustrates:
Fig. 1 is that the longitudinal direction of a kind of dual-cylinder dual-return stroke staged combustion device of the present invention cuts structural representation open;
Fig. 2 is the A-A cross section structural representation of a kind of dual-cylinder dual-return stroke staged combustion device of the present invention;
Fig. 3 is the B-B cross section structural representation of a kind of dual-cylinder dual-return stroke staged combustion device of the present invention;
Fig. 4 is that the longitudinal direction of the embodiment of a kind of dual-cylinder dual-return stroke staged combustion device of the present invention cuts structural representation open;
Fig. 5 is the cross-sectional structure schematic diagram of burning wall;
Detailed description of the invention:
Below in conjunction with the drawings and specific embodiments, the present invention will be described in detail.
A kind of dual-cylinder dual-return stroke staged combustion device, as shown in Figures 1 to 3, comprise outer cyclone firing cylinder 3, be provided with a burning spray gun 1 sprayed at a high speed by fuel in outer cyclone firing cylinder the upper side of outer cyclone firing cylinder is minimum, the sidewall of outer cyclone firing cylinder is provided with a minimum once tangential air outlet 2.Internal layer cyclone firing cylindrical shell 9 is provided with in described outer cyclone firing cylinder 3, the sidewall of internal layer cyclone firing cylindrical shell 9 and the sidewall of outer cyclone firing cylinder 3 form airtight burning interlayer 10, the sidewall of the internal layer cyclone firing cylindrical shell of the bottom of burning interlayer 10 is minimumly provided with a flame through hole 6, the bottom of internal layer cyclone firing cylinder is except cinder notch 4, except cinder notch 4 is outside equipped with the lime-ash fallen after residue pool 5 burns with dress.Burning spray gun 1 is by coal dust inferior, the inferior fuels such as cinder powder are lighted in the burning interlayer 10 spurted between outer cyclone firing cylinder 3 and internal layer cyclone firing cylinder 9, under the tangential wind action that once tangential air outlet 2 is sent into, the flame of fuel rotates burning downwards around internal layer cyclone firing cylinder in burning interlayer 10, then burned flame enters internal layer cyclone firing cylinder 8 by flame through hole 6 and upwards burns, finally enter in the burner hearth of boiler or hot-blast stove, the lime-ash of after-flame is by falling in residue pool 5 except cinder notch 4.Internal layer cyclone firing cylinder 9 is in hot state when burning, and facilitates the burning of inferior fuel, can effectively solve ignition difficulties and insufficient deficiency of burning.The interior of internal layer cyclone firing cylinder 9 is provided with the tangential air intake duct 8 of secondary, the tangential air intake duct 8 of secondary is provided with air inlet so that be connected with blower fan, is provided with secondary tangent air inlet 7 and communicates with the combustion chamber of internal layer cyclone firing cylinder 9 in the tangential air intake duct 8 of secondary.By blower fan to blowing cold air in the tangential air intake duct 8 of secondary, the temperature of internal layer cyclone firing cylinder 9 sidewall can be effectively reduced, improve the service life of sidewall; Can effectively supplement internal layer cyclone firing cylinder 9 to burn required oxygen simultaneously, make the fuel combustion in internal layer cyclone firing cylinder 9 more abundant, the discharge of minimizing discarded object.Flame through hole 6 can be symmetrical on the sidewall of the internal layer cyclone firing cylindrical shell of the bottom of burning interlayer be provided with four uniformly.Once tangential air outlet 2 can arrange two or more at the lateral wall of outer cyclone firing cylinder, is beneficial to, for burning interlayer 10 provides sufficient combustion air, promote burning.Secondary tangent air inlet 7 can be provided with two or more, is beneficial to, for the combustion chamber of internal layer cyclone firing cylinder 9 provides sufficient combustion air, promote burning, reduce the discharge of discarded object.
As shown in Figure 4 and Figure 5, internal layer cyclone firing cylinder 9 and boiler furnace junction 11 can be provided with second-time burning wall 12, to catch unburnt fine particle, promote burning, reduce the discharge of dust and nitrogen oxide.Second-time burning wall is made up of the column 13 of some irregular arrangements and some crossbeams 14, and crossbeam 14 is connected between adjacent upright posts 13, the webbed filtration of shape.
The present invention is not limited to above-mentioned embodiment, if do not depart from the spirit and scope of the present invention to various change of the present invention or modification, if these are changed and modification belongs within claim of the present invention and equivalent technologies scope, then the present invention also comprises these change and modification.
Claims (3)
1. a dual-cylinder dual-return stroke staged combustion device, comprise outer cyclone firing cylinder, the upper side of outer cyclone firing cylinder is provided with a burning spray gun sprayed at a high speed by fuel in outer cyclone firing cylinder, the sidewall of outer cyclone firing cylinder is provided with an once tangential air outlet, it is characterized in that: in described outer cyclone firing cylinder, be provided with internal layer cyclone firing cylindrical shell, airtight burning interlayer is formed between the sidewall of internal layer cyclone firing cylindrical shell and outer cyclone firing cylinder sidewall, the sidewall of the internal layer cyclone firing cylindrical shell of the bottom of burning interlayer is provided with a flame through hole, the bottom of internal layer cyclone firing cylinder is for removing cinder notch, except cinder notch is arranged with residue pool, internal layer cyclone firing cylinder and boiler furnace junction are provided with second-time burning wall.
2. a kind of dual-cylinder dual-return stroke staged combustion device according to claim 1, it is characterized in that: the interior of described internal layer cyclone firing cylinder is provided with the tangential air intake duct of secondary, the tangential air intake duct of secondary is provided with air inlet and is connected with blower fan, is provided with secondary tangent air inlet and communicates with the combustion chamber of internal layer cyclone firing cylinder in the tangential air intake duct of secondary.
3. a kind of dual-cylinder dual-return stroke staged combustion device according to claim 1, is characterized in that: described second-time burning wall is made up of column and crossbeam, and crossbeam is connected between adjacent upright posts, the webbed filtration of shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010142305.8A CN101900322B (en) | 2010-04-01 | 2010-04-01 | Dual-cylinder dual-return stroke staged combustion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010142305.8A CN101900322B (en) | 2010-04-01 | 2010-04-01 | Dual-cylinder dual-return stroke staged combustion device |
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| Publication Number | Publication Date |
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| CN101900322A CN101900322A (en) | 2010-12-01 |
| CN101900322B true CN101900322B (en) | 2015-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010142305.8A Expired - Fee Related CN101900322B (en) | 2010-04-01 | 2010-04-01 | Dual-cylinder dual-return stroke staged combustion device |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106642082B (en) * | 2016-12-08 | 2019-04-09 | 哈尔滨工业大学 | A kind of small cyclones melting coal-powder boiler |
| WO2019129199A1 (en) * | 2017-12-29 | 2019-07-04 | 广州环峰能源科技股份有限公司 | Composite gasification and combustion system for pulverized biomass |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE460737B (en) * | 1986-05-12 | 1989-11-13 | Konstantin Mavroudis | PANNA FOR FIXED BRAENSLEN, SUPPLIED WITH DEVICES FOR SUPPLY OF SECOND AIR |
| US4782770A (en) * | 1988-01-26 | 1988-11-08 | The United States Of America As Represented By The United States Department Of Energy | Combustor for fine particulate coal |
| US5209187A (en) * | 1991-08-01 | 1993-05-11 | Institute Of Gas Technology | Low pollutant - emission, high efficiency cyclonic burner for firetube boilers and heaters |
| CN1024590C (en) * | 1991-10-25 | 1994-05-18 | 聂森 | Double-sleeve combustion (reaction) device |
| CN1079521C (en) * | 1994-11-02 | 2002-02-20 | 张英杰 | Flue combustor capable of removing dust and fume |
| US5997596A (en) * | 1997-09-05 | 1999-12-07 | Spectrum Design & Consulting International, Inc. | Oxygen-fuel boost reformer process and apparatus |
| AT406901B (en) * | 1998-04-17 | 2000-10-25 | Andritz Patentverwaltung | METHOD AND DEVICE FOR BURNING PARTICULATE SOLIDS |
| SE519605C2 (en) * | 2001-04-26 | 2003-03-18 | Swedish Bioburner System Ab | Solid fuel device and method |
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2010
- 2010-04-01 CN CN201010142305.8A patent/CN101900322B/en not_active Expired - Fee Related
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Address after: 523000 Guangdong province Dongguan City Nancheng Hongfu Road No. 108 Sheng business building 15F Applicant after: Guangdong Christian Dior technology Co., Ltd Address before: 523000 Guangdong province Dongguan City Nancheng Hongfu Road No. 108 Sheng business building 15F Applicant before: Guangdong Di Ao Technology Engineering Ltd. |
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