CN105485676B - The low nitrogen powder combustor of slag tap formula - Google Patents
The low nitrogen powder combustor of slag tap formula Download PDFInfo
- Publication number
- CN105485676B CN105485676B CN201610019873.6A CN201610019873A CN105485676B CN 105485676 B CN105485676 B CN 105485676B CN 201610019873 A CN201610019873 A CN 201610019873A CN 105485676 B CN105485676 B CN 105485676B
- Authority
- CN
- China
- Prior art keywords
- slag
- combustion
- combustion chamber
- hypoxemia
- air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 239000002893 slag Substances 0.000 title claims abstract description 65
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 18
- 239000000843 powder Substances 0.000 title claims abstract description 14
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 9
- 238000002485 combustion reaction Methods 0.000 claims abstract description 46
- 206010021143 Hypoxia Diseases 0.000 claims abstract description 27
- 208000018875 hypoxemia Diseases 0.000 claims abstract description 27
- 238000001816 cooling Methods 0.000 claims abstract description 12
- 229940098458 powder spray Drugs 0.000 claims abstract description 11
- 230000007246 mechanism Effects 0.000 claims abstract description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 7
- 239000001301 oxygen Substances 0.000 claims description 7
- 229910052760 oxygen Inorganic materials 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 230000008676 import Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 230000004048 modification Effects 0.000 claims description 2
- 238000012986 modification Methods 0.000 claims description 2
- 239000002817 coal dust Substances 0.000 abstract description 22
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 abstract description 18
- 239000003245 coal Substances 0.000 abstract description 10
- 238000003723 Smelting Methods 0.000 abstract description 6
- 238000004939 coking Methods 0.000 abstract description 3
- 230000008859 change Effects 0.000 abstract description 2
- 239000002956 ash Substances 0.000 description 8
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 239000010883 coal ash Substances 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D1/00—Burners for combustion of pulverulent fuel
-
- 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
Abstract
The present invention relates to powder combustor, the low nitrogen powder combustor of specifically a kind of slag tap formula.Including powder spray gun, air compartment, a secondary air chamber, in addition to slag combustion chamber；Slag combustor side sets an air compartment, and slag combustion chamber opposite side sets secondary air chamber, and one time air compartment connects powder spray gun；Slag combustion chamber sets once hypoxemia backflow cooling wind inlet；Slag combustion chamber is provided with slag tap mechanism, and the slag mouth of slag tap mechanism is drawn by slag bottom of combustion chamber, and corresponding slag mouth is provided with slag tank.The deslagging mode and combustion atmospheres that the present invention passes through change burning device, the problems such as so as to effectively control the discharge of nitrogen oxides, burner hearth coking, the stable burning of low heat value coal dust and low ash smelting point coal dust to burn, coal adaptability can be substantially improved, adapt it to low heat value, the burning of low ash smelting point coal dust.
Description
Technical field
The present invention relates to powder combustor, the low nitrogen powder combustor of specifically a kind of slag tap formula.
Background technology
Existing coal burner proposes higher want to the calorific value of the coal of adaptation, fugitive constituent, ash content, ash fusion point
Ask, and at present can meet requirement coal dust reserves largely reduce, the price Continued of coal, greatly add operation into
This, while also result in the idle of a large amount of low-quality coals.
CN103062759A discloses a kind of vertical boiler of powder combustor bottom type, and its powder combustor still falls within biography
The powder combustor of deslagging in the form of flyash of system.Due to needing the ash fusion point of consideration coal ash, it is necessary to which fire box temperature is controlled
At 1000 DEG C or so, it is possible to cause coal ash in burner hearth to melt later more than 1100 DEG C, is adhered to above furnace wall cooling
Cause slagging failure.
The content of the invention
Present invention seek to address that above mentioned problem existing for prior art, and coal adaptation energy can be substantially improved by providing one kind
Power, adapt it to low heat value, the low nitrogen powder combustor of the slag tap formula of low ash smelting point coal dust burning.
The present invention solves the technical scheme that its technical problem uses：
A kind of low nitrogen powder combustor of slag tap formula, including powder spray gun, air compartment, a secondary air chamber, in addition to
Slag combustion chamber；
Slag combustor side sets an air compartment, and slag combustion chamber opposite side sets secondary air chamber, an air compartment connection
Powder spray gun；
Slag combustion chamber sets once hypoxemia backflow cooling wind inlet；
Slag combustion chamber is provided with slag tap mechanism, and the slag mouth of slag tap mechanism is drawn by slag bottom of combustion chamber
Go out, corresponding slag mouth is provided with slag tank.
The low nitrogen powder combustor for the slag tap formula that above-mentioned technical proposal provides, during coal dust firing, coal dust is by powder spray
Rifle is sent into burner, and an air compartment provides a hypoxemia combustion air, a part of backflow flue gas is mixed with hypoxemia combustion air, will be combustion-supporting
Oxygen concentration in wind reduces, it is possible thereby to slow down the burning velocity of coal dust, reduces the combustion intensity of coal dust, while the combustion air
Coefficient of excess be less than 1, allow coal dust one reduction atmosphere in burnt, it is possible thereby to substantially reduce the production of nitrogen oxides
It is raw.Flame provides a certain amount of secondary combustion-supporting wind in time after slag combustion chambers burn, by secondary air chamber, promotes its progress secondary
Burning, to lift the burn-off rate of coal dust.This burner uses the form of slag tap, can try out in low heat value, low ash smelting point
Coal dust, it is possible thereby to avoid the generation of burner hearth coking, reduce the operating cost of user.
In summary, using the present invention of above-mentioned technical proposal, compared with prior art, its advantage is：
By the deslagging mode and combustion atmospheres of change burning device, so as to effectively control the discharge of nitrogen oxides, burner hearth
The problems such as the problem of coking, the stable burning of low heat value coal dust and low ash smelting point coal dust burn, thus the burner makes slag tap
And low nitrogen burning is carried out on miniature boiler.Compared with traditional burner, the ability for adapting to coal obtains significantly
Lifting, be adapted to low heat value, the coal dust of low ash smelting point；Fire box temperature can reach more than 1300 DEG C, can so reduce
The heating surface area of boiler, makes the steel quantity consumption of boiler reduce, and reduces the discharge capacity of flue gas, reduces coal consumption；Due to the ash in burner hearth
Dust quantity is reduced, and exhaust smoke level is reduced, and can be strengthened the heat transfer efficiency of convection bank, be reduced the investment in terms of sack cleaner, enter
One step improves the thermal efficiency of industrial furnace.
Preferably, the further technical scheme of the present invention is：
Air compartment is provided with a combustion-supporting wind inlet of hypoxemia, and the hypoxemia combustion air that the combustion-supporting wind inlet of a hypoxemia provides contains
Oxygen amount is less than 21%.
The hypoxemia backflow wind oxygen content that hypoxemia backflow cooling wind inlet provides is 5%.
Flow control valve is installed on hypoxemia backflow cooling wind inlet.
Flow section valve is installed on the secondary combustion-supporting wind inlet of secondary air chamber.
Combustion air split channel is provided with First air room, each combustion air split channel exit is provided with water conservancy diversion whirlwind
Piece.
Water conservancy diversion whirlwind sheet is connected with the YE by remote control, the adjustable swirl vane of composition activity.
The angle modification scope of water conservancy diversion whirlwind sheet is 0-90 °.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention；
In figure：1- powder spray guns；Air compartment of 2-；3- slags combustion chamber；4- slag tanks；5- secondary air chambers；11- coal dusts
Import；Combustion-supporting wind inlet of hypoxemia of 21-；Hypoxemia backflow cooling wind inlet of 31-；32- slag mouths；51- secondary combustion-supporting wind
Import.
Embodiment
The present invention is further elaborated with reference to embodiments, but the present embodiment does not form any restrictions to the present invention.
Referring to Fig. 1, a kind of low NO for slag tap formula that the present embodiment provides, mainly by powder spray gun 1, once
Outside slag tap mechanism and burner body built in air compartment 2, slag combustion chamber 3, secondary air chamber 5 and slag combustion chamber 3
The slag tank of setting is formed, and the coal dust import 11 of powder spray gun 1 connects powder feeding wind mechanism, is set once on an air compartment 2
The combustion-supporting wind inlet 21 of hypoxemia, secondary combustion-supporting wind inlet 51, the side of slag combustion chamber 3 connection First air are provided with secondary air chamber 5
Room 2, the opposite side connecting secondary air compartment 5 of slag combustion chamber 3, one time air compartment 2 connects powder spray gun 1；Slag combustion chamber 3 is provided with one
Secondary hypoxemia backflow cooling wind inlet 31；The slag mouth 32 of slag tap mechanism is drawn by the bottom of slag combustion chamber 3, corresponding slag mouth
32 are provided with slag tank 4.This burner is applied to various stoves.
During this case burner combustion, coal dust is sent into pulverized coal gun 1, a hypoxemia by a pulverizer air by coal dust import 11
Combustion air enters an air compartment 2 by the combustion-supporting wind inlet 21 of a hypoxemia, and the backflow cigarette of a part is mixed with the hypoxemia combustion air
Gas, the oxygen concentration in combustion air is reduced to suitable concn, it is possible thereby to slow down the burning velocity of coal dust, reduces the combustion of coal dust
Intensity is burnt, while the coefficient of excess of the combustion air is less than 1, allows coal dust to be burnt in the atmosphere of a reduction, it is possible thereby to
Substantially reduce the generation of nitrogen oxides.Pulverized coal flame is burnt in the stabilization of slag combustion chamber 3, and the slag combustion chamber 3 is designed once
Hypoxemia backflow cooling wind inlet 31, the hypoxemia that a certain amount of oxygen content the is 5% during operating wind that flows back pass through a hypoxemia backflow cooling
Wind inlet 31 is entered in slag burner 3, for preventing the temperature in slag combustion chamber 3 too high, causes it to burn out, in slag
Burner 3 has secondary air chamber 5 below, and secondary combustion-supporting wind is by secondary combustion-supporting wind inlet 51 in exit and flue gas caused by burning
Mix, second-time burning is carried out, to ensure the burn-off rate of coal dust.
Be designed with water conservancy diversion whirlwind sheet in an air compartment 2 corresponding on burner, the whirlwind sheet with by the electronic of remote control
Actuator connects, it is possible thereby to form the adjustable swirl vane of activity.By adjusting the angle of the swirl vane, fire can be adjusted
The size of flame, make fuel efficient burning in effective burning situation, further suppress the production of nitrogen oxides, and reduce
The discharge of nitrogen oxides.
Preferably feasible embodiment of the invention is the foregoing is only, not thereby limits to the interest field of the present invention,
All equivalence changes made with present specification, it is both contained within the interest field of the present invention.
Claims (1)
1. a kind of low nitrogen powder combustor of slag tap formula, including powder spray gun（1）, an air compartment（2）, secondary air chamber（5）、
Slag combustion chamber（4）, slag combustion chamber（3）It is provided with slag tap mechanism, the slag mouth of slag tap mechanism（32）By slag
Combustion chamber（3）Bottom is drawn, corresponding slag mouth（32）It is provided with slag tank（4）；It is characterized in that：
Slag combustion chamber（3）Side sets an air compartment（2）, slag combustion chamber（3）Opposite side sets secondary air chamber（5）, once
Air compartment（2）Connect powder spray gun（1）；Air compartment（2）The once combustion-supporting wind inlet of hypoxemia is set（21）, a hypoxemia combustion air
Import（21）The hypoxemia combustion air oxygen content of offer is less than 21%；Air compartment（2）Combustion air split channel is inside provided with, each
Combustion air split channel exit is provided with water conservancy diversion whirlwind sheet；Water conservancy diversion whirlwind sheet is connected with the YE by remote control,
The adjustable swirl vane of composition activity；The angle modification scope of water conservancy diversion whirlwind sheet is 0-90 °；Secondary air chamber（5）Secondary combustion-supporting
Wind inlet（51）On flow control valve is installed；
Slag combustion chamber（3）Once hypoxemia backflow cooling wind inlet is set（31）；Hypoxemia backflow cooling wind inlet（31）
The hypoxemia backflow wind oxygen content of offer is 5%；Hypoxemia backflow cooling wind inlet（31）On flow control valve is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610019873.6A CN105485676B (en) | 2016-01-13 | 2016-01-13 | The low nitrogen powder combustor of slag tap formula |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610019873.6A CN105485676B (en) | 2016-01-13 | 2016-01-13 | The low nitrogen powder combustor of slag tap formula |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105485676A CN105485676A (en) | 2016-04-13 |
| CN105485676B true CN105485676B (en) | 2018-01-26 |
Family
ID=55672832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610019873.6A Active CN105485676B (en) | 2016-01-13 | 2016-01-13 | The low nitrogen powder combustor of slag tap formula |
Country Status (1)
| Country | Link |
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| CN (1) | CN105485676B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6034007B2 (en) * | 1980-07-15 | 1985-08-06 | 日鉄化工機株式会社 | High load combustion method |
| JPS58179710A (en) * | 1982-04-15 | 1983-10-21 | Ishikawajima Harima Heavy Ind Co Ltd | Gasifying combustion of pulverized coal |
| CN101324334B (en) * | 2008-07-28 | 2011-03-23 | 上海题桥纺织染纱有限公司 | Low NOx liquid state slag-off double-eddy flow coal-powder combustor |
| CN201496952U (en) * | 2009-08-11 | 2010-06-02 | 重庆市牛人科技有限公司 | Sectional powdered coal burner |
| CN101806453B (en) * | 2010-04-26 | 2011-08-10 | 中国科学院广州能源研究所 | Vertical air-cooled pulverized coal burner capable of realizing continuous slag tapping |
| CN103123113A (en) * | 2013-01-24 | 2013-05-29 | 孙公钢 | Double-rotational-flow industrial boiler pulverized coal burner with back-blowing device |
| CN205279074U (en) * | 2016-01-13 | 2016-06-01 | 唐山金沙燃烧热能科技有限公司 | Low nitrogen powder combustor of slag -tap formula |
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2016
- 2016-01-13 CN CN201610019873.6A patent/CN105485676B/en active Active
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| CN105485676A (en) | 2016-04-13 |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 063000 No. 655 science and technology road, Qian'an high tech Industrial Development Zone, Tangshan City, Hebei Patentee after: TANGSHAN JINSHA COMBUSTION HEAT ENERGY CO.,LTD. Address before: 064400 No. 655 science and technology road, Qian'an high tech Industrial Development Zone, Tangshan City, Hebei Patentee before: TANGSHAN GOLD SAND COMBUSTION ENERGY TECHNOLOGY CO.,LTD. |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Low nitrogen powder burner with liquid slag discharge Effective date of registration: 20210624 Granted publication date: 20180126 Pledgee: Bank of China Limited Qian'an Branch Pledgor: TANGSHAN JINSHA COMBUSTION HEAT ENERGY Co.,Ltd. Registration number: Y2021990000552 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20221111 Granted publication date: 20180126 Pledgee: Bank of China Limited Qian'an Branch Pledgor: TANGSHAN JINSHA COMBUSTION HEAT ENERGY CO.,LTD. Registration number: Y2021990000552 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Low nitrogen powder burner with liquid slag removal Effective date of registration: 20230208 Granted publication date: 20180126 Pledgee: Bank of China Limited Qian'an Branch Pledgor: TANGSHAN JINSHA COMBUSTION HEAT ENERGY CO.,LTD. Registration number: Y2023980032301 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230919 Granted publication date: 20180126 Pledgee: Bank of China Limited Qian'an Branch Pledgor: TANGSHAN JINSHA COMBUSTION HEAT ENERGY CO.,LTD. Registration number: Y2023980032301 |