CN105485676A - Liquid slagging type low-nitrogen powder combustor - Google Patents
Liquid slagging type low-nitrogen powder combustor Download PDFInfo
- Publication number
- CN105485676A CN105485676A CN201610019873.6A CN201610019873A CN105485676A CN 105485676 A CN105485676 A CN 105485676A CN 201610019873 A CN201610019873 A CN 201610019873A CN 105485676 A CN105485676 A CN 105485676A
- Authority
- CN
- China
- Prior art keywords
- slag
- combustion
- combustion chamber
- chamber
- combustor
- 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.)
- Granted
Links
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 239000000843 powder Substances 0.000 title claims abstract description 22
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 18
- 239000007788 liquid Substances 0.000 title abstract 6
- 239000002893 slag Substances 0.000 claims abstract description 61
- 238000002485 combustion reaction Methods 0.000 claims abstract description 60
- 229940098458 powder spray Drugs 0.000 claims abstract description 11
- 238000001816 cooling Methods 0.000 claims abstract description 10
- 230000007246 mechanism Effects 0.000 claims abstract description 9
- 239000001301 oxygen Substances 0.000 claims abstract description 8
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 206010021143 Hypoxia Diseases 0.000 claims description 26
- 208000018875 hypoxemia Diseases 0.000 claims description 26
- 230000008676 import Effects 0.000 claims description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 7
- 239000003818 cinder Substances 0.000 claims description 7
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims description 2
- 230000004048 modification Effects 0.000 claims description 2
- 238000012986 modification Methods 0.000 claims description 2
- 239000002817 coal dust Substances 0.000 abstract description 23
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 abstract description 17
- 239000003245 coal Substances 0.000 abstract description 10
- 238000004939 coking Methods 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 230000006978 adaptation Effects 0.000 abstract 1
- 238000010992 reflux Methods 0.000 abstract 1
- 239000002956 ash Substances 0.000 description 7
- 238000003723 Smelting Methods 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 239000010883 coal ash Substances 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 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
- 238000004519 manufacturing process 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
The invention relates to powder combustors, in particular to a liquid slagging type low-nitrogen powder combustor. The liquid slagging type low-nitrogen powder combustor comprises a powder spray gun, a primary air chamber and a secondary air chamber and further comprises a slag combustion chamber. The primary air chamber is arranged on one side of the slag combustion chamber, the secondary air chamber is arranged on the other side of the slag combustion chamber, and the primary air chamber is connected with the powder spray gun. A primary low-oxygen reflux cooling air inlet is formed in the slag combustion chamber. A liquid slagging mechanism is arranged on the slag combustion chamber, a slag falling opening of the liquid slagging mechanism is led out of the bottom of the slag combustion chamber, and a slag falling water trough is formed corresponding to the slag falling opening. By means of changing of the slagging manner and the combustion atmosphere of the combustor, emission of nitric oxide, hearth coking, low-heating-value coal dust stable combustion, low-ash-fusion-point coal dust combustion and other problems can be effectively controlled, the coal type adaptation capability can be greatly improved, and the liquid slagging type low-nitrogen powder combustor adapts to low-heating-value and low-ash-fusion point coal dust combustion.
Description
Technical field
The present invention relates to powder combustor, specifically a kind of low nitrogen powder combustor of slag tap formula.
Background technology
Existing coal burner all proposes higher requirement to the calorific value of coal adapted to, fugitive constituent, ash content, ash fusion point, and the coal dust reserves that can meet the demands at present reduce in a large number, the price Continued of coal, add the cost of operation greatly, also result in the idle of a large amount of low-quality coal simultaneously.
CN103062759A discloses a kind of vertical boiler of powder combustor bottom type, and its powder combustor still belongs to traditional with the powder combustor of flyash form deslagging.Owing to needing the ash fusion point considering coal ash, fire box temperature must be controlled at about 1000 DEG C, just likely cause coal ash to melt in burner hearth more than 1100 DEG C later, stick to above furnace wall cooling and cause slagging failure.
Summary of the invention
The present invention is intended to the problems referred to above solving prior art existence, and provides one significantly can promote coal adaptive capacity, makes the low nitrogen powder combustor of the slag tap formula that it adapts to low heat value, low ash smelting point coal dust burns.
The technical scheme that the present invention solves the employing of its technical problem is:
A low nitrogen powder combustor for slag tap formula, comprises powder spray gun, air compartment, a secondary air chamber, also comprises slag combustion chamber;
Side, slag combustion chamber arranges an air compartment, and slag combustion chamber opposite side arranges secondary air chamber, and one time air compartment connects powder spray gun;
Slag combustion chamber is provided with a hypoxemia backflow cooling wind inlet;
Slag combustion chamber is provided with slag tap mechanism, and the cinder notch that falls of slag tap mechanism is drawn by slag bottom of combustion chamber, and the correspondence cinder notch that falls is provided with slag bath.
The low nitrogen powder combustor of the slag tap formula that technique scheme provides, during coal dust firing, coal dust sends into burner by powder spray gun, one time air compartment provides a hypoxemia combustion air, a part of backflow flue gas is mixed with in hypoxemia combustion air, oxygen concentration in combustion air is reduced, can be slowed down the burning velocity of coal dust thus, reduce the combustion intensity of coal dust, the coefficient of excess of this combustion air is less than 1 simultaneously, allow coal dust burn in the atmosphere of a reduction, greatly can reduce the generation of nitrogen oxide thus.Flame, after slag combustion chambers burn, provides a certain amount of secondary combustion-supporting wind in time by secondary air chamber, impels it to carry out second-time burning, to promote the burn-off rate of coal dust.This burner adopts the form of slag tap, can try out the coal dust in low heat value, low ash smelting point, can avoid the generation of burner hearth coking thus, reduce the operating cost of user.
In sum, adopt the present invention of technique scheme, compared with prior art, its beneficial effect is:
By changing deslagging mode and the combustion atmospheres of burner, thus effectively can control the discharge of nitrogen oxide, the problem of burner hearth coking, the problem such as the smooth combustion of low heat value coal dust and the burning of low ash smelting point coal dust, this burner makes slag tap and low nitrogen burning be implemented on miniature boiler thus.Compared with traditional burner, the ability adapting to coal is significantly promoted, and can adapt to the coal dust of low heat value, low ash smelting point; Fire box temperature can reach more than 1300 DEG C, can reduce the heating surface area of boiler like this, and the steel quantity consumption of boiler is reduced, and reduces the discharge capacity of flue gas, reduces coal consumption; Because the amount of dust in burner hearth reduces, exhaust smoke level reduces, and can strengthen the heat transfer efficiency of convection bank, reduce the investment of sack cleaner aspect, improves the thermal efficiency of industrial furnace further.
As preferably, the present invention further technical scheme is:
One time air compartment is provided with the import of a hypoxemia combustion air, and the hypoxemia combustion air oxygen content that the import of a hypoxemia combustion air provides is lower than 21%.
The hypoxemia backflow wind oxygen content that a hypoxemia backflow cools wind inlet to be provided is 5%.
A hypoxemia backflow cooling wind inlet is provided with flow control valve.
The secondary combustion-supporting wind inlet of secondary air chamber is provided with flow joint valve.
First air indoor are provided with combustion air split channel, and 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 swirl vane that formation activity is adjustable.
The angle modification scope of water conservancy diversion whirlwind sheet is 0-90 °.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention;
In figure: 1-powder spray gun; 2-air compartment; 3-slag combustion chamber; 4-falls slag bath; 5-secondary air chamber; The import of 11-coal dust; The import of a 21-hypoxemia combustion air; 31-hypoxemia backflow cooling wind inlet; 32-falls cinder notch; 51-secondary combustion-supporting wind inlet.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is further elaborated, but the present embodiment does not form any restriction to the present invention.
See Fig. 1, the low NO of a kind of slag tap formula that the present embodiment provides, primarily of powder spray gun 1, an air compartment 2, slag combustion chamber 3, secondary air chamber 5, and the slag bath that falls of the built-in slag tap mechanism in slag combustion chamber 3 and burner body outer setting is formed, the coal dust import 11 of powder spray gun 1 connects pulverizer air mechanism, an air compartment 2 is provided with hypoxemia combustion air import 21, secondary air chamber 5 is provided with secondary combustion-supporting wind inlet 51, side, slag combustion chamber 3 connects an air compartment 2, slag combustion chamber 3 opposite side connecting secondary air compartment 5, one time air compartment 2 connects powder spray gun 1, slag combustion chamber 3 is provided with a hypoxemia backflow cooling wind inlet 31, the cinder notch 32 that falls of slag tap mechanism is drawn by bottom slag combustion chamber 3, and the correspondence cinder notch 32 that falls is provided with slag bath 4.This burner is applicable to various stove.
During this case burner combustion, coal dust sends into pulverized coal gun 1 by a pulverizer air by coal dust import 11, one time hypoxemia combustion air enters into an air compartment 2 by hypoxemia combustion air import 21, the backflow flue gas of a part is mixed with in this hypoxemia combustion air, oxygen concentration in combustion air is reduced to suitable concn, can be slowed down the burning velocity of coal dust thus, reduce the combustion intensity of coal dust, the coefficient of excess of this combustion air is less than 1 simultaneously, allow coal dust burn in the atmosphere of a reduction, greatly can reduce the generation of nitrogen oxide thus.Pulverized coal flame is in slag combustion chamber 3 smooth combustion, this slag combustion chamber 3 is designed with a hypoxemia backflow cooling wind inlet 31, during running a certain amount of oxygen content be 5% hypoxemia backflow wind enter into slag burner 3 by hypoxemia backflow cooling wind inlet 31, for preventing the temperature in slag combustion chamber 3 too high, cause it to burn out, secondary air chamber 5 is had below at slag burner 3, secondary combustion-supporting wind is mixed with the Gas phase Smoke produced that burns in exit by secondary combustion-supporting wind inlet 51, carry out second-time burning, 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, this whirlwind sheet is connected with the YE by remote control, can form movable adjustable swirl vane thus.By adjusting the angle of this swirl vane, the size of flame can be adjusted, making fuel efficient burning in effective burning situation, suppress the production of nitrogen oxide further, and reduce the discharge of nitrogen oxide.
The foregoing is only the better feasible embodiment of the present invention, not thereby limit to interest field of the present invention, the equivalence change that all utilizations description of the present invention is done, be all contained within interest field of the present invention.
Claims (8)
1. a low nitrogen powder combustor for slag tap formula, comprises powder spray gun at (1), air compartment (2), secondary air chamber (5), it is characterized in that:
Also comprise slag combustion chamber (4);
Slag combustion chamber (3) side arranges an air compartment (2), and slag combustion chamber (3) opposite side arranges secondary air chamber (5), and one time air compartment (2) connects powder spray gun (1);
Slag combustion chamber (3) is provided with hypoxemia backflow cooling wind inlet (8);
Slag combustion chamber (3) is provided with slag tap mechanism, and the cinder notch that falls (32) of slag tap mechanism is drawn by slag combustion chamber (3) bottom, and the correspondence cinder notch (32) that falls is provided with slag bath (4).
2. the low nitrogen powder combustor of slag tap formula according to claim 1, is characterized in that: one time air compartment (2) is provided with hypoxemia combustion air import (21), and the hypoxemia combustion air oxygen content that hypoxemia combustion air import (21) provides is lower than 21%.
3. the low nitrogen powder combustor of slag tap formula according to claim 1, is characterized in that: the hypoxemia backflow wind oxygen content that a hypoxemia backflow cools wind inlet (31) to be provided is 5%.
4. the low nitrogen powder combustor of the slag tap formula according to claim 1 or 3, is characterized in that: hypoxemia backflow cooling wind inlet (31) is provided with flow control valve.
5. the low nitrogen powder combustor of slag tap formula according to claim 1, is characterized in that: the secondary combustion-supporting wind inlet (51) of secondary air chamber (5) is provided with flow control valve.
6. the low nitrogen powder combustor of slag tap formula according to claim 1, is characterized in that: be provided with combustion air split channel in an air compartment (2), and each combustion air split channel exit is provided with water conservancy diversion whirlwind sheet.
7. the low nitrogen powder combustor of slag tap formula according to claim 6, is characterized in that: water conservancy diversion whirlwind sheet is connected with the YE by remote control, the swirl vane that formation activity is adjustable.
8. the low nitrogen powder combustor of slag tap formula according to claim 7, is characterized in that: the angle modification scope of water conservancy diversion whirlwind sheet is 0-90 °.
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 true CN105485676A (en) | 2016-04-13 |
| CN105485676B CN105485676B (en) | 2018-01-26 |
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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 |
|---|---|
| CN (1) | CN105485676B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5721712A (en) * | 1980-07-15 | 1982-02-04 | Nittetsu Kakoki Kk | High load combustion method |
| JPS58179710A (en) * | 1982-04-15 | 1983-10-21 | Ishikawajima Harima Heavy Ind Co Ltd | Gasifying combustion of pulverized coal |
| 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 |
| CN201496952U (en) * | 2009-08-11 | 2010-06-02 | 重庆市牛人科技有限公司 | Sectional powdered coal burner |
| CN101806453A (en) * | 2010-04-26 | 2010-08-18 | 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 |
-
2016
- 2016-01-13 CN CN201610019873.6A patent/CN105485676B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5721712A (en) * | 1980-07-15 | 1982-02-04 | Nittetsu Kakoki Kk | High load combustion method |
| JPS58179710A (en) * | 1982-04-15 | 1983-10-21 | Ishikawajima Harima Heavy Ind Co Ltd | Gasifying combustion of pulverized coal |
| 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 |
| CN201496952U (en) * | 2009-08-11 | 2010-06-02 | 重庆市牛人科技有限公司 | Sectional powdered coal burner |
| CN101806453A (en) * | 2010-04-26 | 2010-08-18 | 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105485676B (en) | 2018-01-26 |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
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| 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 |