CN109751600A - A kind of fuel gas combustion system of multitubular boiler - Google Patents
A kind of fuel gas combustion system of multitubular boiler Download PDFInfo
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- CN109751600A CN109751600A CN201910170598.1A CN201910170598A CN109751600A CN 109751600 A CN109751600 A CN 109751600A CN 201910170598 A CN201910170598 A CN 201910170598A CN 109751600 A CN109751600 A CN 109751600A
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- gas
- boiler
- gun
- spray
- guns
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 26
- 239000002737 fuel gas Substances 0.000 title claims abstract description 18
- 239000007789 gas Substances 0.000 claims abstract description 65
- 239000007921 spray Substances 0.000 claims abstract description 63
- 239000000567 combustion gas Substances 0.000 claims description 16
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 11
- 239000003546 flue gas Substances 0.000 abstract description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 6
- 229910052799 carbon Inorganic materials 0.000 abstract description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 206010021143 Hypoxia Diseases 0.000 description 2
- 235000019504 cigarettes Nutrition 0.000 description 2
- 239000008246 gaseous mixture Substances 0.000 description 2
- 208000018875 hypoxemia Diseases 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The present invention discloses a kind of fuel gas combustion system of multitubular boiler, it mainly include low NO, steady flame device and boiler, low NO and steady flame device are arranged at the front wall of boiler, and steady flame device is located at the centre of low NO, it is provided with multiple preceding spray gas guns and multiple side spray gas guns in low NO, gas guns are sprayed before multiple and the rifle mouth of multiple side spray gas guns protrudes into the furnace chamber of boiler.Gas gun in the present invention stretches out burner throat, and the spray and towards furnace wall side spray before the direction of burner hearth flow of flue gas in such a way that preceding spray gas gun and side spray gas gun combine, make full use of the furnace cavity of multitubular boiler, and generate circulation in flue gas, the discharge of multitubular boiler NOx is reduced, while avoiding the problem that furnace wall carbon distribution.
Description
Technical field
The present invention relates to field of boilers more particularly to a kind of fuel gas combustion systems of multitubular boiler.
Background technique
Though multitubular boiler, which has, saves land occupation, the small advantage of steel consumption, the heat exchange area of burner hearth is than general water pipe pot
Small, the volume heat load height of furnace, and the heat transfer effect of multitubular boiler is worse than water-tube boiler, so multitubular boiler is more difficult to accomplish NOx
Minimum discharge (≤30mg/Nm3), especially some special multitubular boilers, such as central flame flame, cast iron multitubular boiler.It passes
The low NO structure of system, gas gun are located in burner throat, the combustion gas in pipette tips be mostly towards burner hearth direct-injection, though it is subsequent
Combustion process Flame can be diffused to periphery, but still have the boiler furnace space of part not to be fully utilized, and flame compares
It concentrates, causes the raw emissions of NOx high, be difficult to accomplish 30mg/Nm3It is low-nitrogen discharged.
Exist for gas gun to be located on the market at present and is changed to the multitubular boiler that gas gun stretches out aditus laryngis in aditus laryngis, the spray of combustion gas
It penetrates direction radially to be sprayed towards furnace wall by being changed to combustion gas along cigarette airflow direction direct-injection, reduces furnace core flame peak value temperature
Degree achieves the good effect for reducing NOx emission.All combustion gas of multitubular boiler are directly toward furnace wall injection, though reduce furnace
The peak temperature of core flame is the generation for reducing NOx, but a large amount of fuel gas high-speeds spray to furnace wall, are likely to result in furnace wall carbon distribution
Potential problems.
Summary of the invention
Based on the above, the present invention provides a kind of fuel gas combustion system of multitubular boiler, to solve existing reduction fire
The problem of pipe boiler furnace core temperature, the easy carbon distribution in furnace wall.
To achieve this purpose, the present invention adopts the following technical scheme:
A kind of fuel gas combustion system of multitubular boiler, including low NO, steady flame device and boiler, the low nitrogen combustion
Burner and the steady flame device are arranged at the front wall of boiler, and the steady flame device is located at the central part of low NO
Position, be provided in the low NO it is multiple before spray gas guns and multiple side spray gas guns, it is the multiple before spray gas gun and
The rifle mouth of multiple side spray gas guns protrudes into the furnace chamber of boiler.
As a kind of preferred embodiment of the invention, the steady flame device is divided into flame-stabilizing area and fixed disk, the flame-stabilizing area and
Fixed disk is concentric circles, and flame-stabilizing area is located inside fixed disk.
As a kind of preferred embodiment of the invention, several air guns, several described air guns are provided in the flame-stabilizing area
It is equally spaced at annular shape.
As a kind of preferred embodiment of the invention, gas gun and multiple side spray gas guns are sprayed before the multiple respectively at annulus
Shape is equally spaced, and preceding spray gas gun is equal with side spray gas gun number.
As a kind of preferred embodiment of the invention, gas gun is sprayed before described and is located on the inside of side spray gas gun, and preceding spray combustion gas
Rifle and side spray gas gun interlaced arrangement.
As a kind of preferred embodiment of the invention, gas gun is sprayed before described and side spray gas gun is multi-tier arrangement, and is preceding
Interlock layer by layer between spray gas gun and side spray gas gun.
As a kind of preferred embodiment of the invention, combustion air channel is provided in the aditus laryngis of the burner.
The invention has the benefit that
Gas gun in the present invention stretches out burner throat, and combined using preceding spray gas gun and side spray gas gun
Mode sprays before the direction of burner hearth flow of flue gas and towards furnace wall side spray, makes full use of the furnace cavity of multitubular boiler, and produces
Circulation in raw flue gas, reduces the discharge of multitubular boiler NOx, while avoiding the problem that furnace wall carbon distribution.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, institute in being described below to the embodiment of the present invention
Attached drawing to be used is needed to be briefly described.
Fig. 1 is a kind of fuel gas combustion system main view for multitubular boiler that embodiment of the present invention provides；
Fig. 2 is a kind of fuel gas combustion system side view for multitubular boiler that embodiment of the present invention provides；
Fig. 3 is the steady flame device schematic diagram that embodiment of the present invention provides.
Specific embodiment
To keep the technical problems solved, the adopted technical scheme and the technical effect achieved by the invention clearer, below
It will the technical scheme of the embodiment of the invention will be described in further detail in conjunction with attached drawing.
As shown in Figure 1-Figure 3, present embodiment provides a kind of fuel gas combustion system of multitubular boiler, mainly includes low nitrogen
Burner 1, steady flame device 2 and boiler 3, low NO 1 and steady flame device 2 are arranged at the front wall 4 of boiler 3, and steady flame
Device 2 is located at the centre of low NO 1, and multiple preceding spray gas guns 5 and the combustion of multiple side sprays are provided in low NO 1
Air gun 6, sprays gas gun 5 before multiple and the rifle mouth of multiple side spray gas guns 6 protrudes into the furnace chamber of boiler 3, in present embodiment,
Steady flame device 2 divides for flame-stabilizing area 7 and fixed disk 8, and flame-stabilizing area 7 and fixed disk 8 are concentric circles, and flame-stabilizing area 7 is located at fixed disk 8
Inside, in the furnace chamber of the multitubular boiler of traditional level-one at present on the market, there are upper and lower waves for the temperature of flame at the center portion thereof position
It is dynamic, in order to stablize the temperature of flame of centre in furnace chamber, several air guns 9 are set in flame-stabilizing area 7, this is several in present embodiment
A air gun 9 is equally spaced at annular shape, and the muzzle of air gun 9 gos deep into the inside of furnace chamber, in air gun mainly by part of fuel with
Air is mutually mixed, for that can provide required central hot to central area when burning.Preferably, multiple in present embodiment
Preceding spray gas gun 5 is equally spaced at annular shape, and multiple side spray gas guns 6 are equally spaced at annular shape, and preceding spray gas gun 5
It is respectively positioned on the inside of side spray gas gun 6.Preceding spray gas gun 5 and side spray gas gun follow multi-tier arrangement in present embodiment, according to
Gas gun 5 is sprayed before one layer and one layer of interval of side spray gas gun 6 is arranged, and adjacent preceding spray gas gun 5 and side spray gas gun 6 interlocks
Arrangement, avoids interfering with each other when gas gun being avoided to work.
When the fuel gas combustion system is worked, the muzzle position of preceding spray gas gun 5 and side spray gas gun 6 generates high temperature cigarette
It is to form negative relative area between the front wall 4 of boiler 3 at gas, high-temperature flue gas can be back to the region, carry out inner flue gas of the stove again
It recycles and is mixed with combustion air, generate the gaseous mixture of hypoxemia amount, burn again with combustion gas in the gaseous mixture flowing of hypoxemia amount,
And then reduce the discharge of NOx.It is recycled because having been generated in flue gas in furnace, therefore the recycled amount of the outer flue gas of furnace can be reduced, mitigate furnace
Outer flue gas recirculation bring adverse effect.Combustion gas from traditional direct-injection or is changed in multitubular boiler furnace chamber in present embodiment
Side spray after is changed to Some gases and sprays to furnace chamber side wall, sprays before Some gases, combustion gas can penetrate air layer, cover combustion gas
On the section of entire boiler furnace, the overlay area of the jet flames of combustion gas is expanded, reduces the peak temperature of flame.It penetrates
The combustion gas that air layer outer boundary is gone out anoxycausis in laminar air boundary exterior domain, i.e., dense burning, produces a large amount of reduction
Property substance can inhibit NOx to generate；And combustion gas and smoke mixture are gradually flowed towards furnace chamber tail portion, and combustion gas can be made in entire furnace chamber
It inside burns, takes full advantage of the space of furnace chamber, reduce the peak temperature of flame, balanced flame temperature, and then reduce
The discharge of NOx.Because of the problem of being sprayed before Some gases, reducing the combustion gas sprayed towards furnace wall, can avoid furnace wall carbon distribution.In addition,
It is equipped with a small amount of air gun 9 on demand in steady flame device 2, provides central hot by air gun 9, stablizes flame, thus the combustion of the multitubular boiler
Gas combustion system has excellent combustion stability, and from burner hearth in such a way that preceding spray gas gun 5 and side spray gas gun 6 combine
It is sprayed before the direction of flow of flue gas and towards furnace wall side spray, makes full use of the furnace cavity of multitubular boiler, and generate in flue gas and follow
Ring, reduces the discharge of multitubular boiler NOx, while avoiding the problem that furnace wall carbon distribution.
Note that the above is only a better embodiment of the present invention and the applied technical principle.It will be appreciated by those skilled in the art that
The invention is not limited to the specific embodiments described herein, be able to carry out for a person skilled in the art it is various it is apparent variation,
It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out by above embodiments to the present invention
It is described in further detail, but the present invention is not limited to the above embodiments only, without departing from the inventive concept, also
It may include more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.
Claims (7)
1. a kind of fuel gas combustion system of multitubular boiler, which is characterized in that including low NO, steady flame device and boiler,
The low NO and the steady flame device are arranged at the front wall of boiler, and the steady flame device is located at low NO
Centre, be provided in the low NO it is multiple before spray gas guns and multiple side spray gas guns, it is the multiple before spray
The rifle mouth of gas gun and multiple side spray gas guns protrudes into the furnace chamber of boiler.
2. a kind of fuel gas combustion system of multitubular boiler according to claim 1, which is characterized in that the steady flame device
It is divided into flame-stabilizing area and fixed disk, the flame-stabilizing area and fixed disk are concentric circles, and flame-stabilizing area is located inside fixed disk.
3. a kind of fuel gas combustion system of multitubular boiler according to claim 2, which is characterized in that in the flame-stabilizing area
Several air guns are provided with, several described air guns are equally spaced at annular shape.
4. a kind of fuel gas combustion system of multitubular boiler according to claim 1, which is characterized in that spray before the multiple
Gas gun and multiple side spray gas guns are equally spaced at annular shape respectively, and preceding spray gas gun and side spray gas gun number etc.
Together.
5. a kind of fuel gas combustion system of multitubular boiler according to claim 4, which is characterized in that spray combustion gas before described
Rifle position is on the inside of side spray gas gun, and preceding spray gas gun and side spray gas gun interlaced arrangement.
6. a kind of fuel gas combustion system of multitubular boiler according to claim 5, which is characterized in that spray combustion gas before described
Rifle and side spray gas gun are multi-tier arrangement, and interlock layer by layer between preceding spray gas gun and side spray gas gun.
7. a kind of fuel gas combustion system of multitubular boiler according to claim 1, which is characterized in that the burner
Combustion air channel is provided in aditus laryngis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910170598.1A CN109751600A (en) | 2019-03-07 | 2019-03-07 | A kind of fuel gas combustion system of multitubular boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910170598.1A CN109751600A (en) | 2019-03-07 | 2019-03-07 | A kind of fuel gas combustion system of multitubular boiler |
Publications (1)
| Publication Number | Publication Date |
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| CN109751600A true CN109751600A (en) | 2019-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910170598.1A Pending CN109751600A (en) | 2019-03-07 | 2019-03-07 | A kind of fuel gas combustion system of multitubular boiler |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105351925A (en) * | 2015-11-09 | 2016-02-24 | 上海华之邦科技股份有限公司 | Low-emission gas combustion furnace and combustion air preparation method thereof |
| CN106247319A (en) * | 2016-09-22 | 2016-12-21 | 上海华之邦科技股份有限公司 | A kind of gas industry boiler combustion device and combustion gas hierarchical arrangement method thereof |
| US20170276344A1 (en) * | 2014-09-02 | 2017-09-28 | Linde Aktiengesellschaft | LOW-NOx-BURNER |
| CN108488794A (en) * | 2018-05-10 | 2018-09-04 | 上海华之邦科技股份有限公司 | A kind of low NOx high heating values gas combustion apparatus of flue gas classification internal-circulation type |
| CN208253585U (en) * | 2018-05-10 | 2018-12-18 | 上海华之邦科技股份有限公司 | A kind of low NOx high heating value gas combustion apparatus of flue gas classification internal-circulation type |
| CN209763066U (en) * | 2019-03-07 | 2019-12-10 | 上海华之邦科技股份有限公司 | Gas combustion system for fire tube boiler |
-
2019
- 2019-03-07 CN CN201910170598.1A patent/CN109751600A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170276344A1 (en) * | 2014-09-02 | 2017-09-28 | Linde Aktiengesellschaft | LOW-NOx-BURNER |
| CN105351925A (en) * | 2015-11-09 | 2016-02-24 | 上海华之邦科技股份有限公司 | Low-emission gas combustion furnace and combustion air preparation method thereof |
| CN106247319A (en) * | 2016-09-22 | 2016-12-21 | 上海华之邦科技股份有限公司 | A kind of gas industry boiler combustion device and combustion gas hierarchical arrangement method thereof |
| CN108488794A (en) * | 2018-05-10 | 2018-09-04 | 上海华之邦科技股份有限公司 | A kind of low NOx high heating values gas combustion apparatus of flue gas classification internal-circulation type |
| CN208253585U (en) * | 2018-05-10 | 2018-12-18 | 上海华之邦科技股份有限公司 | A kind of low NOx high heating value gas combustion apparatus of flue gas classification internal-circulation type |
| CN209763066U (en) * | 2019-03-07 | 2019-12-10 | 上海华之邦科技股份有限公司 | Gas combustion system for fire tube boiler |
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Address after: 200433, room 202-10, building A, building 128, No. 11 Xiang Yin Road, Shanghai, Yangpu District Applicant after: SHANGHAI WISEBOND TECHNOLOGY Co.,Ltd. Applicant after: Changzhou Jingjie Environmental Protection Technology Co., Ltd Address before: 200433, room 202-10, building A, building 128, No. 11 Xiang Yin Road, Shanghai, Yangpu District Applicant before: SHANGHAI WISEBOND TECHNOLOGY Co.,Ltd. Applicant before: WISEBOND ENVIRONMENTAL PROTECTION TECHNOLOGY (CHANGZHOU) Co.,Ltd. |