CN105627280B - A kind of lignite semi-coke combustion with meagre oxygen boiler - Google Patents
A kind of lignite semi-coke combustion with meagre oxygen boiler Download PDFInfo
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- CN105627280B CN105627280B CN201610153272.4A CN201610153272A CN105627280B CN 105627280 B CN105627280 B CN 105627280B CN 201610153272 A CN201610153272 A CN 201610153272A CN 105627280 B CN105627280 B CN 105627280B
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- cyclone cylinder
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- boiler
- firing chamber
- dual firing
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 61
- 239000001301 oxygen Substances 0.000 title claims abstract description 43
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 43
- 239000003077 lignite Substances 0.000 title claims abstract description 35
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 241000707825 Argyrosomus regius Species 0.000 title claims abstract description 27
- 239000000571 coke Substances 0.000 title claims abstract description 21
- 238000010304 firing Methods 0.000 claims abstract description 43
- 230000009977 dual effect Effects 0.000 claims abstract description 40
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000003546 flue gas Substances 0.000 claims abstract description 20
- 238000010438 heat treatment Methods 0.000 claims abstract description 15
- 238000006243 chemical reaction Methods 0.000 claims abstract description 11
- 238000002309 gasification Methods 0.000 claims abstract description 8
- 239000007789 gas Substances 0.000 claims abstract description 5
- 230000000694 effects Effects 0.000 claims abstract description 4
- 239000002893 slag Substances 0.000 claims description 45
- 238000002844 melting Methods 0.000 claims description 20
- 230000008018 melting Effects 0.000 claims description 20
- 239000000779 smoke Substances 0.000 claims description 15
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 4
- 230000033228 biological regulation Effects 0.000 abstract description 6
- 239000003344 environmental pollutant Substances 0.000 abstract description 6
- 231100000719 pollutant Toxicity 0.000 abstract description 6
- 230000014759 maintenance of location Effects 0.000 abstract description 3
- 239000002737 fuel gas Substances 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 9
- 239000007788 liquid Substances 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 239000003245 coal Substances 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000003818 cinder Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000004449 solid propellant Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 206010020843 Hyperthermia Diseases 0.000 description 1
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical class [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 239000011280 coal tar Substances 0.000 description 1
- 238000004581 coalescence Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000036031 hyperthermia Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- CSJDCSCTVDEHRN-UHFFFAOYSA-N methane;molecular oxygen Chemical compound C.O=O CSJDCSCTVDEHRN-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000012265 solid product Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L9/00—Passages or apertures for delivering secondary air for completing combustion of fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B31/00—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus
- F22B31/02—Installation of water-tube boilers in chimneys, e.g. in converter chimneys
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B31/00—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus
-
- 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
- F23C7/02—Disposition of air supply not passing through burner
Abstract
The invention discloses a kind of lignite semi-coke combustion with meagre oxygen boiler, including some cyclone cylinder lean-oxygen burners and boiler body；Boiler body includes dual firing chamber, is arranged at the boiler heating surface and exhaust opening on dual firing chamber top；Cyclone cylinder lean-oxygen burner is an inverted Adiabatic Cyclone separator with central tube；The dual firing chamber of the cyclone cylinder lean-oxygen burner connection boiler body.Lignite semi-coke powder tangentially or is cut to the annular space entered between central tube and cyclone cylinder under primary air effect, be formed as high-temp combustion gasification zone in the bottom of annular space, excess air coefficient is kept to be less than 1 in this region, maintenance reaction is combustion with meagre oxygen atmosphere；Flue gas containing fuel gas enters dual firing chamber, and fully burning generation high-temperature flue gas is up respectively by each heating surface of boiler of tower arrangement, completes heat transfer, flue gas is reduced to certain exhaust gas temperature.Combustion intensity of the present invention is high, retention efficiency is high, pollutant emission is low, load regulation range is wide.
Description
Technical field
The present invention relates to boiler technology field, more particularly to a kind of lignite semi-coke combustion with meagre oxygen boiler.
Background technology
Lignite is a kind of low-order coal, and the reserves in China and the world are huge, but the water content of lignite is high, and volatile matter is high, is easy to
Spontaneous combustion, it is unfavorable for transporting, constrains the extensive utilization of lignite.By lignite upgrading, classification sub-prime comprehensive utilization, for lignite
Develop significant.
Field is utilized in lignite, middle low temperature pyrogenation technology is that a kind of more promising lignite classification sub-prime utilizes skill
Art.Solid product lignite semi-coke is pyrolyzed because volatile matter is reduced, moisture is reduced, and caloric value improves, and is a kind of preferable fuel, brown
The high-efficiency low-pollution of coal semicoke, which utilizes to improve using comprehensive energy efficiency for lignite classification sub-prime, to be had the function that to hold the balance.
Lignite semi-coke can be used for gasification furnace raw material manufacture coal gas, can be used for boiler oil directly burn production heat energy.
It is most direct Application way to be wherein used for the direct combustion heating working medium production hot water of boiler or steam.But because lignite semi-coke is waved
Hair point substantially reduces, and its flammability is affected.It is stable to develop a kind of combustibility, the low combustion lignite of pollutant emission half
Burnt boiler is most important.
Currently, the primary combustion mode of solid fuel coal and coal tar has three kinds：Grate furnace, fluid bed furnace and coal-powder boiler.Coal
Powder stove is the main combustion system of station boiler.
Also a kind of combustion system cyclone firing also once obtained more application.Cyclone firing is that the one kind artificially organized is steady
Fixed controllable high speed swirl flame, combustion flame degree of filling is higher, and disturbance ability is extremely strong, suitable for powder, the solid combustion of bits shape
The combustion process of material, there is higher calorific intensity than in general room combustion mode.Because solid fuel exists necessarily in a combustion chamber
Amount of savings, there is the considerably long holdup time in cyclone furnace, contribute to maintain combustion process continuity.Scorching hot slag
Film accumulates certain heat, is the burning bed of stabilizer pole, can maintain the stability of combustion process.Cyclone firing has burning strong
The advantages that degree is high, retention efficiency is high, flameholding, but due to analysis iron, hydrogen is quick-fried, deslagging is difficult and pollutant such as discharged nitrous oxides
The problems such as high, its application are subject to certain restrictions.
Under the overall background of energy-saving and emission-reduction, coal-burning power plant carries important power peak regulation task, it is desirable to station boiler energy
Enough stable and high effective operations in the load range of broadness.The stability high efficiency and boiler of burning generally be present in existing station boiler
Underrun between contradiction.Therefore, it is necessary to propose a kind of new burning boiler, it can realize that high-efficiency low-pollution fires
Burn, can also realize larger Load Regulation.
The content of the invention
It is an object of the invention to provide a kind of lignite semi-coke combustion with meagre oxygen boiler, to solve existing coal-powder boiler boiler combustion
The problem of low intensity, load regulation range are narrow, pollutant emission is exceeded；Boiler of the present invention have combustion intensity is high, retention efficiency is high,
The advantages that pollutant emission is low, load regulation range is wide.
To achieve the above objectives, the present invention, which adopts the following technical scheme that, is achieved：
A kind of lignite semi-coke combustion with meagre oxygen boiler, including some cyclone cylinder lean-oxygen burners and boiler body；Boiler sheet
Body includes dual firing chamber, is arranged at the boiler heating surface and exhaust opening on dual firing chamber top；Cyclone cylinder lean-oxygen burner is one and fallen
The Adiabatic Cyclone separator with central tube put；The dual firing chamber of the cyclone cylinder lean-oxygen burner connection boiler body.
Further, cyclone cylinder lean-oxygen burner includes cyclone cylinder, central tube, smoke tube and Secondary Air cyclone；
The lower sides of cyclone cylinder are provided with primary air nozzle；The bottom centre of cyclone cylinder is provided with through hole, and central tube passes through cyclone cylinder bottom
Through hole stretch into inside cyclone cylinder, be arranged at intervals for through hole at the top of central tube and with cyclone cylinder top inner wall, central tube and whirlwind
The sealing of cylinder junction；Melting slag bath is provided with positioned at the lower section of primary air nozzle in cyclone cylinder, the bottom for melting slag bath is provided with first row
Cinder notch；The bottom of central tube is provided with the second slag-drip opening, smoke tube one end vertical connection central tube, other end connection dual firing chamber.
Further, the Secondary Air eddy flow for being used for being sent into afterburning Secondary Air is provided with the porch of smoke tube and dual firing chamber
Device.
Further, primary air nozzle tilts down setting.
Further, each cyclone cylinder side wall is provided with two primary air nozzles for being used to form whirlwind in cyclone cylinder.
Further, the tower arrangement of boiler heating surface.
Further, lignite semi-coke powder tangentially or cuts to from cyclone cylinder bottom primary air nozzle under primary air effect
Enter the annular space between central tube and cyclone cylinder, be formed as high-temp combustion gasification zone in the bottom of annular space, in this area
Domain keeps excess air coefficient to be less than 1, and maintenance reaction is combustion with meagre oxygen atmosphere；Generate flue gas strong rotation removing in cyclone cylinder
Molten slag, then flue gas dual firing chamber is entered by the smoke tube between dual firing chamber and cyclone cylinder, enter dual firing chamber when mend
Part auxiliary air is filled, dual firing chamber is entered with rotating jet；Flue gas fully burning and further heat release, Ran Housheng in dual firing chamber
It is up respectively by each heating surface of boiler of tower arrangement into high-temperature flue gas, heat transfer is completed, flue gas is reduced to exhaust gas temperature
Discharged afterwards from exhaust opening.
Further, central tube and cyclone cylinder are made up of silicon nitride material, the whirlwind formed between central tube and cyclone cylinder
Combustion chamber is insulated combustion chamber.
Further, the burning carried out in dual firing chamber is homogeneous combustion, and excess air coefficient is 1.05~1.1.
Further, the temperature for melting reaction zone above slag bath is higher than grey melting temperature 100~200 DEG C.
Further, cyclone cylinder lean-oxygen burner is multiple and be uniformly distributed in boiler body periphery.
Compared with prior art, it is an advantage of the invention that：
1st, most of fuel bound nitrogen is converted into, in dual firing chamber using classification by nitrogen using melting combustion with meagre oxygen in cyclone cylinder
Air burning, reduce the discharge of nitrogen oxides.
2nd, more liquid slag forms slag bath in cyclone cylinder ring casing space, the melting ash content in slag bath is to residual burnt gasification
Burning is played a part of being catalyzed and providing thermal source, maintains the stability of burning, improves charcoal percent conversion.Each cyclone cylinder has
2 wind inlets being arranged symmetrically, form strong swirling eddy in cyclone cylinder；It is to have certain depth above cyclone cylinder bottom
Melting slag bath, ickings fast pyrogenation and gasification in slag slag bath of bulky grain, realize high carbon conversions；It is provided with below slag bath
Mud hole, the temperature in cyclone cylinder maintain more than grey melting temperature, and smooth slag tap can be achieved.
3rd, the gasification, and combustion in slag bath is mainly carbon oxygen exothermic reaction so that localized hyperthermia is maintained at slag bath, is advantageous to carry
High combustion intensity and the mobility for improving liquid slag.
4th, the strong swirling eddy in cyclone cylinder combustion chamber, cinder is thrown to wall and realizes point of molten melt drop and flue gas
From improving and mend slag rate, the contamination and follow-up dedusting for significantly reducing follow-up tower boiler heating surface are born.
5th, the central tube bottom between cyclone cylinder and dual firing chamber is provided with the second slag separation chamber, has not enough time to the liquid of separation
State slag is captured into this slag bath, further reduces the flying dust share in flue gas and realizes to the greatest extent may be used for liquid slag and gaseous product
Can separation.
6th, the supplement Secondary Air of rotating jet is provided with dual firing chamber's import, maintains overall excess air coefficient in relatively low water
It is flat, in the mainly homogeneous combustion that dual firing chamber is carried out, reduce the generation of nitrogen oxides.
7th, cyclone cylinder, central tube and conduit pipe with thermal insulation use silicon nitride material, improve the resistance to heat shocks energy of equipment.
8th, a boiler can match somebody with somebody multiple cyclone cylinder combustion with meagre oxygen equipment.
Brief description of the drawings
Below in conjunction with the drawings and the specific embodiments, the present invention is described in further detail.
Fig. 1 is a kind of structural representation of lignite semi-coke combustion with meagre oxygen boiler of the present invention；
Fig. 2 is Fig. 1 top view.
In figure：1st, cyclone cylinder；2nd, central tube；3rd, boiler heating surface；4th, exhaust opening；5th, dual firing chamber；6th, Secondary Air cyclone；
7th, smoke tube；8th, the second slag-drip opening；9th, the first slag-drip opening；10th, slag bath is melted；11st, primary air nozzle.
Embodiment
Refer to shown in Fig. 1, a kind of lignite semi-coke combustion with meagre oxygen boiler of the present invention, including some cyclone cylinder combustion with meagre oxygen dress
Put and boiler body, both satellite types are arranged.
The bottom of boiler body is dual firing chamber 5, and the top of dual firing chamber 5 is the boiler heating surface 3 of tower arrangement, boiler heating surface
3 tops are provided with exhaust opening 4.
Cyclone cylinder lean-oxygen burner includes cyclone cylinder 1, central tube 2, smoke tube 7 and Secondary Air cyclone 6.Cyclone cylinder
1 lower sides are provided with primary air nozzle 11, and primary air nozzle 11 is micro- to tilt down setting；Each side wall of cyclone cylinder 1 is provided with two
The individual primary air nozzle 11 for being used to form whirlwind in cyclone cylinder 1.The bottom centre of cyclone cylinder 1 is provided with through hole, and central tube 2 passes through rotation
The through hole of the bottom of air duct 1 is stretched into inside cyclone cylinder 1, and the top of central tube 2 is arranged at intervals for through hole and with the top inner wall of cyclone cylinder 1,
Central tube 2 seals with the junction of cyclone cylinder 1.In cyclone cylinder 1 melting slag bath 10, liquid slag are provided with positioned at the lower section of primary air nozzle 11
The bottom in pond 10 is provided with the first slag-drip opening 9.The bottom of central tube 2 is provided with the second slag-drip opening 8, one end vertical connection of smoke tube 7
Central tube 2, other end connection dual firing chamber 5, is provided with Secondary Air cyclone 6 in the porch of smoke tube 7 and dual firing chamber 5, is used for
It is sent into the Secondary Air of afterburning.
In order to realize combustion with meagre oxygen, lignite semi-coke powder is by primary air and flue gas recycled by micro- First air tilted down
Mouth 11 is sent into cyclone cylinders 1 annular region for melting the top of slag bath 10, and lignite Jiao is fast under strong high-temperature slag heat effect
Speed heat solution is simultaneously burnt, in the range of the excess air coefficient of primary air is maintained less than 1.Little particle is fast in the presence of air-flow
Quick burning burns, and because strong turbulent flow combustion is dynamic, short grained grey molten melt drop coalescence is simultaneously thrown to rotation under the influence of centrifugal force
On the wall of air duct 1, melting slag bath 10 is flowed under gravity, and the coke powder of bulky grain also sticks under the influence of centrifugal force
On liquid slag film, melting slag bath 10 is flowed slowly under gravity, and residual burnt particle occurs to gasify and burnt in flowing
Reaction, flow into melting slag bath 10 after the residence time dramatically increase, improve the burn-off rate of carbon.Melt the top reaction zone of slag bath 10
Temperature remains higher than grey melting temperature 100~200 DEG C using adjustment excess air coefficient and the control of flue gas recycled rate.Melting
Slag bath 10 has larger thermal capacity, can quickly complete residual burnt gasification, and combustion., can due to having one layer of slag in melting slag bath 10
Ensure the stability and slag fluidity of slag bath temperature, unnecessary slag is discharged by the first slag-drip opening 9.It is raw in ring-like reaction zone
Into gaseous product complete from the area of turning back on the top of cyclone cylinder 1 along central tube 2 downwards and to pass through with the gas-liquid separation of slag, gas
Smoke tube 7 is sent into dual firing chamber 5.Afterburning is sent into by Secondary Air cyclone 6 in the porch of smoke tube 7 and dual firing chamber 5
Secondary Air, completely burned is completed with 1.05~1.1 small excess air coefficient in the inside of dual firing chamber 5.Generated after completely burned
High-temperature flue gas is upward from dual firing chamber 5, passes sequentially through each boiler heating surface 3, and flue gas is reduced to one with the heat-exchange temperature of boiler heating surface 3
Fixed temperature discharges boiler from exhaust opening 4, sets gas recirculating fan to introduce a certain amount of smoke evacuation once in system simultaneously
Air port 11.
The structure of lignite semi-coke combustion with meagre oxygen boiler of the present invention is with process characteristic：
In the circular passage that adiabatic high-temp. vortex cylinder 1 is formed with central tube 2 made of the silicon nitride, the excess that is passed through
Air coefficient is less than 1, forms combustion with meagre oxygen condition, while has thicker melting slag bath 10 in this region, residual burnt completion melting
Burn, contain more fuel gas in the flue gas of generation.It is higher to melt the temperature of slag bath, is advantageous to the complete conversion of carbon residue,
Make deslagging smooth simultaneously.Inverted cyclone cylinder causes slag is realized with gaseous product farthest to separate.Simultaneously because high temperature
The nitrogen oxides of combustion with meagre oxygen generation also substantially reduces.In dual firing chamber, due to being homogeneous combustion, relatively low excess can be maintained
Air coefficient, to reduce the generation of pollutant.The characteristics of this kind of boiler is that each boiler body can configure multiple cyclone cylinders
Lean-oxygen burner, each cyclone cylinder lean-oxygen burner can isolated operation, so as to improve lignite semi-coke combustion with meagre oxygen pot
The Load Regulation ratio of stove.
Claims (8)
1. a kind of lignite semi-coke combustion with meagre oxygen boiler, it is characterised in that including some cyclone cylinder lean-oxygen burners and boiler sheet
Body；
Boiler body includes dual firing chamber (5), is arranged at the boiler heating surface (3) and exhaust opening (4) on dual firing chamber (5) top；
Cyclone cylinder lean-oxygen burner is an inverted Adiabatic Cyclone separator with central tube；The cyclone cylinder oxygen deprivation combustion
Burn the dual firing chamber (5) of device connection boiler body；
Cyclone cylinder lean-oxygen burner includes cyclone cylinder (1), central tube (2), smoke tube (7) and Secondary Air cyclone (6)；Rotation
The lower sides of air duct (1) are provided with primary air nozzle (11)；The bottom centre of cyclone cylinder (1) is provided with through hole, and central tube (2) passes through
It is internal that the through hole of cyclone cylinder (1) bottom stretches into cyclone cylinder (1), at the top of central tube (2) for through hole and with cyclone cylinder (1) top inner wall
It is arranged at intervals, central tube (2) seals with cyclone cylinder (1) junction；Lower section in cyclone cylinder (1) positioned at primary air nozzle (11) is provided with
Slag bath (10) is melted, the bottom of melting slag bath (10) is provided with the first slag-drip opening (9)；The bottom of central tube (2) is provided with the second deslagging
Mouth (8), smoke tube (7) one end vertical connection central tube (2), other end connection dual firing chamber (5)；
Cyclone cylinder lean-oxygen burner is multiple and be uniformly distributed in boiler body periphery.
A kind of 2. lignite semi-coke combustion with meagre oxygen boiler according to claim 1, it is characterised in that smoke tube (7) with
The porch of dual firing chamber (5) is provided with the Secondary Air cyclone (6) for being used for being sent into afterburning Secondary Air.
3. a kind of lignite semi-coke combustion with meagre oxygen boiler according to claim 1, it is characterised in that primary air nozzle (11) is downward
It is obliquely installed.
A kind of 4. lignite semi-coke combustion with meagre oxygen boiler according to claim 1, it is characterised in that each cyclone cylinder (1) side
Wall is provided with two primary air nozzles (11) for being used to form whirlwind in cyclone cylinder (1).
A kind of 5. lignite semi-coke combustion with meagre oxygen boiler according to claim 1, it is characterised in that boiler heating surface (3) tower
Formula is arranged.
6. a kind of lignite semi-coke combustion with meagre oxygen boiler according to claim 1, it is characterised in that lignite semi-coke powder is once
Tangentially or cut empty to the annular entered from cyclone cylinder bottom primary air nozzle (11) between central tube and cyclone cylinder under air effect
Between, be formed as high-temp combustion gasification zone in the bottom of annular space, keep excess air coefficient to be less than 1 in this region, maintain
React for combustion with meagre oxygen atmosphere；Flue gas strong rotation removing molten slag in cyclone cylinder is generated, then flue gas passes through dual firing chamber
Smoke tube (7) between cyclone cylinder enters dual firing chamber, part auxiliary air is supplemented when entering dual firing chamber, with rotating jet
Into dual firing chamber；Flue gas fully burning and further heat release in dual firing chamber, then high-temperature flue gas is up passes through tower respectively for generation
The each heating surface of boiler of formula arrangement, completes heat transfer, and flue gas is reduced to after exhaust gas temperature and discharged from exhaust opening.
A kind of 7. lignite semi-coke combustion with meagre oxygen boiler according to claim 1, it is characterised in that central tube and cyclone cylinder by
Silicon nitride material is made, and the cyclone combustion chamber formed between central tube and cyclone cylinder is insulated combustion chamber.
A kind of 8. lignite semi-coke combustion with meagre oxygen boiler according to claim 1, it is characterised in that the combustion carried out in dual firing chamber
It is 1.05~1.1 to burn for homogeneous combustion, excess air coefficient；The temperature of reaction zone above slag bath (10) is melted than grey melting temperature
It is high 100~200 DEG C.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610153272.4A CN105627280B (en) | 2016-03-17 | 2016-03-17 | A kind of lignite semi-coke combustion with meagre oxygen boiler |
| PCT/CN2016/080062 WO2017156824A1 (en) | 2016-03-17 | 2016-04-22 | Lignite semi-coke oxygen deficient combustion boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610153272.4A CN105627280B (en) | 2016-03-17 | 2016-03-17 | A kind of lignite semi-coke combustion with meagre oxygen boiler |
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| Publication Number | Publication Date |
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| CN105627280A CN105627280A (en) | 2016-06-01 |
| CN105627280B true CN105627280B (en) | 2017-12-15 |
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| CN201610153272.4A Active CN105627280B (en) | 2016-03-17 | 2016-03-17 | A kind of lignite semi-coke combustion with meagre oxygen boiler |
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| WO (1) | WO2017156824A1 (en) |
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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 |
| CN107975782B (en) * | 2017-11-22 | 2019-04-12 | 西安交通大学 | A kind of the fractional combustion boiler system and method for slag combustion with meagre oxygen catalysis oxidation |
| CN108931054A (en) * | 2018-06-04 | 2018-12-04 | 河南龙成煤高效技术应用有限公司 | A kind of hot-blast stove and the method for controlling its burning |
| CN110135065B (en) * | 2019-05-15 | 2024-02-09 | 吉林大学 | Combustion air distribution optimization method based on coal quality soft measurement technology |
| CN110094718A (en) * | 2019-05-28 | 2019-08-06 | 武汉武锅能源工程有限公司 | A kind of low dirt smoke generating apptss and method using pyrolysis waste coke |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2198506Y (en) * | 1994-07-05 | 1995-05-24 | 上海交通大学 | Vertical rear trap slag tube bundle whirlwind boiler with ring room |
| JP2000213707A (en) * | 1999-01-25 | 2000-08-02 | Hitachi Zosen Corp | Combustion apparatus |
| CN201246737Y (en) * | 2008-07-24 | 2009-05-27 | 广东工业大学 | Anthracite duff combustion device of power station boiler |
| CN201487939U (en) * | 2009-07-17 | 2010-05-26 | 刘效洲 | Dual-drum pulverized anthracite burning device |
| CN102062393B (en) * | 2011-01-06 | 2012-11-28 | 西安交通大学 | Cyclone burning method and device for reburning fuel in cyclone drum for denitration |
| CN202166050U (en) * | 2011-07-08 | 2012-03-14 | 贵州电力试验研究院 | Pulverized-coal-combustion-stabilizing dual cyclone air cylinder combustor - W-type flame boiler |
| CN105114943A (en) * | 2015-08-26 | 2015-12-02 | 烟台龙源电力技术股份有限公司 | Cyclone furnace and method for improving slag captured rate of cyclone furnace |
| CN107327819A (en) * | 2015-11-10 | 2017-11-07 | 李聪 | A kind of power station burning boiler |
| CN205447700U (en) * | 2016-03-17 | 2016-08-10 | 西安交通大学 | Oxygendeficient burning boiler of brown coal semicoke |
-
2016
- 2016-03-17 CN CN201610153272.4A patent/CN105627280B/en active Active
- 2016-04-22 WO PCT/CN2016/080062 patent/WO2017156824A1/en active Application Filing
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| WO2017156824A1 (en) | 2017-09-21 |
| CN105627280A (en) | 2016-06-01 |
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