CN105526588A - Fuel gas swirling low-nitrogen burner of steam-injection boiler - Google Patents
Fuel gas swirling low-nitrogen burner of steam-injection boiler Download PDFInfo
- Publication number
- CN105526588A CN105526588A CN201610035684.8A CN201610035684A CN105526588A CN 105526588 A CN105526588 A CN 105526588A CN 201610035684 A CN201610035684 A CN 201610035684A CN 105526588 A CN105526588 A CN 105526588A
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- air
- secondary air
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- chamber
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/20—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone
- F23D14/22—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other
- F23D14/24—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other at least one of the fluids being submitted to a swirling motion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
- F23D2900/21—Burners specially adapted for a particular use
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
The invention discloses a fuel gas swirling low-nitrogen burner of a steam-injection boiler. Such a crude oil swirling low-nitrogen burner comprises, in an air flow direction, an air inlet, a control damper, a central air chamber, secondary air chambers, peripheral air chambers, a secondary air nozzle and a peripheral air nozzle in order. Central air orderly flows through the central air chamber, a central air duct and a flame stabilizer. Secondary air orderly flows through one secondary air chamber, a secondary air swirling plate, the other secondary air chamber and the secondary air nozzle. Peripheral air orderly flows through one peripheral air chamber, the other peripheral air chamber and the peripheral air nozzle. The burner provided by the present invention organizes air for combustion via reasonable staging to realize staged combustion of the crude oil, and therefore, the generation of nitrogen oxides may be effectively reduced and nitrogen emissions may be reduced; in addition, the burner has the advantages of simple system, easy maintenance, low maintenance cost and long service life.
Description
Technical field
The present invention relates to a kind of burner that can realize injection boiler employing combustion gas low nitrogen burning.
Background technology
In July, 2013, Shandong Province issues " the regional discharge standard of air pollutants in Shandong Province ", and specify on January 1st, 2017, oil burning boiler discharged nitrous oxides standard is at 250mg/Nm
3within, to the year two thousand twenty January 1, oil burning boiler discharged nitrous oxides standard is at 200mg/Nm
3within.But because existing gas injection burner all adopts high excess air coefficient to burn, and its structure is simple, organizes wind single, causes discharged nitrous oxides to exceed standard; The discharge improving steam-injected boiler efficiency of combustion and reduction nitrogen oxide becomes the task of top priority of steam-injected boiler industry.In recent years, power industry has carried out a large amount of technological improvement to station boiler conventional ignition mode, has occurred as plasma, Gasifying Small Oil Gun, two device such as by force.But above-mentioned each device, due to reasons such as its inherent mechanisms, all has some limitations when being applied in injection boiler.As plasma burner: once invest high, suitability of fuel is poor, and power consumption is high, and service life is short, system complex and maintenance cost high.As North America burner: inlet burner, once drop into high, can not reduce discharged nitrous oxides, maintaining costly.As two strong burner: system complex, fuel consumption is large, invests high.
In sum, this type of technology is applicable to the power industry boiler of Large Copacity high parameter or is applicable to coal-burning boiler, in injection boiler uses, there is great limitation.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the invention provides one and can not only realize crude oil ignition and combustion, can also realize the injection boiler combustion gas eddy flow low NO of efficient low nitrogen burning by swirling eddy.
Technical scheme: for solving the problems of the technologies described above, a kind of injection boiler combustion gas eddy flow low NO of the present invention, burner air flow to comprising air intake successively through air intake, be located at total air compartment at air intake place, the damper be located in total air compartment, center air compartment, secondary air chamber, circumference air compartment, overfire air port, surrounding air spout; Centre wind flows through center air compartment, the central air hose be connected with center air compartment successively, is located at the stabilizer that central air hose exports inside; Secondary Air flows through secondary air chamber successively, the Secondary Air spinning disk be located in secondary air chamber, the secondary air channel be connected with secondary air chamber, be located at the overfire air port of the end of secondary air channel; Surrounding air flows through circumference air compartment, the circumference airduct be connected with circumference air compartment, the surrounding air spout that is located at surrounding air pipe port successively; Described central air hose is located in secondary air channel, secondary air channel is located in circumference airduct, central air hose, secondary air channel, circumference airduct three central shaft are all on central air hose axial line, burning torch is provided with in described central air hose, described burner is provided with a gas burner, described gas burner comprises gas distributor and one group of gas gun that is coupled and that be located at outside centre wind spout, gas gun even circumferential is distributed in secondary air chamber, and gas burner ecto-entad is through center air compartment and secondary air chamber.
Further, described burning torch axial line is on central air hose axial line.
Further, flame detector is provided with in described central air hose.
Further, described Secondary Air spinning disk is connected with a secondary air regulation device, can regulate Secondary Air air quantity and eddy flow angle, can adjust the total blast volume and wind speed that enter burner by damper.
Burning torch is Small scale gas combustion burners.It is inner that stabilizer is positioned at central air hose outlet, for being installed on the swirl vane assembly of central air hose inner walls; After overfire air port is positioned at stabilizer, for being installed on the reducing conical pipe of secondary air chamber end; Surrounding air spout is positioned at outside circumference air compartment end, overfire air port, is diffusion spout, the two equal adjustable flame profile and intensity.
Principle of the present invention and feature are: during boiler ignition start, utilize combustion gas fully to mix with air in situation after the injection and lighted the thermal-flame of generation, combustion gas molecule rapid cleavage through this flame is burnt, combustion flame is through stabilizer, because air capacity is improved, burn stronger; Subsequently, combustion flame is through overfire air port, and being subject to Secondary Air swirling eddy at this affects and passive rotation, the oxygen that simultaneously stability Secondary Air supplements, and burning is more strong, and ignition temperature is higher; Finally, combustion flame, through surrounding air spout, is subject to surrounding air airflow influence and flame is strengthened at this, the oxygen that simultaneously stability surrounding air supplements, and burning is more strong and thoroughly.By a series of overheavy firing, ensure that combustion gas normal combustion when low excess air coefficient, realize gas ignition and surely fire and low nitrogen burning.
Beneficial effect: the present invention in terms of existing technologies, have the following advantages: burner provided by the invention is through reasonable hierarchically organized burning wind, realize the fractional combustion of combustion gas, effectively can reduce the generation of nitrogen oxide, reduce nitrogen discharged, and system is simple, compact conformation, easy care, maintenance cost are low, long service life, once drop into low, payback period short; And can fuel gas buring be realized.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Wherein: 1-burning torch; 2-center air compartment; 3-gas distributor; 4-secondary air regulation device; 5-secondary air chamber; 6-Secondary Air spinning disk; 7-circumference air compartment; 8-overfire air port; 9-surrounding air spout; 10-gas burner; 11-stabilizer; 12-circumference air compartment; 13-damper; 14-central air hose; 15-secondary air chamber; The total air compartment of 16-; 17-flame detector; 18-gas gun.
Detailed description of the invention
Below in conjunction with description and Fig. 1, the injection boiler combustion gas eddy flow low NO to combustion gas rotary combustion is described further.
The injection boiler combustion gas eddy flow low NO of combustion gas rotary combustion, this combustion gas eddy flow low NO, according to air flow, is followed successively by: air intake, total air compartment 16, damper 13, center air compartment 2, secondary air chamber 5, circumference air compartment 7, overfire air port 8, surrounding air spout 9.Wherein, centre wind flows through center air compartment 2, central air hose 14, stabilizer 11 successively.Secondary Air flows through secondary air chamber 5, Secondary Air spinning disk 6, secondary air chamber 15, overfire air port 8 successively.Surrounding air flows through circumference air compartment 7, circumference air compartment 12, surrounding air spout 9 successively.In the equal centering airduct 14 of burning torch 1, flame detector 17 and stabilizer 11; Central air hose 14 is placed in secondary air chamber 15; Secondary air chamber 15 is placed in circumference air compartment 12.Three's central shaft is all on central air hose 14 axial line; Central air hose 14 is outer is secondary air chamber 15, circumference air compartment 12 successively.Parallel on burning torch 1 igniter and flame detector 17 are installed.
Gas burner 10 is made up of gas distributor 3 and gas gun (18).Secondary air chamber 5 is designed with secondary air regulation device 4, can regulate Secondary Air air quantity and eddy flow angle.The total blast volume and wind speed that enter burner can be adjusted by damper 13.
Burning torch 1 is Small scale gas combustion burners.Stabilizer 11 is positioned at central air hose 14 and exports inside, for being installed on the swirl vane assembly of central air hose 14 inner walls; After overfire air port 8 is positioned at stabilizer 11, for being installed on the reducing conical pipe of secondary air chamber 15 end; Surrounding air spout 9 is positioned at outside circumference air compartment 12 end, overfire air port 8, is diffusion spout, the two equal adjustable flame profile and intensity.
Burning torch 1 axial line is on central air hose 14 axial line, and its outlet is at secondary air chamber 15 center.Combustion case is monitored by flame detector 17.
During igniting, in the pipeline of burning torch 1, add combustion gas, combustion gas fully mixes with compressed air or steam through nozzle, forms mist, then lighted by igniter in stabilizer 11 exit.After seeing clear flame by flame detector 17, combustion gas is passed in gas distributor 3, combustion gas is evenly distributed to after gas burner 10 through this and enters gas gun 18 again, finally spraying enters in secondary air chamber 15, meanwhile, pass into quantitative centre wind at central air hose 14, centre wind fully mixes in stabilizer 11 exit with mixed airflow, make combustion gas Thorough combustion, form fiery core; At this moment flame momentum is large, rigidity is strong, spread speed is fast, central temperature is high.By the Secondary Air driven rotary rotated when overfire air port 8, fill into oxygen, burning is strengthened simultaneously.Eventually pass surrounding air spout 9, pass into a certain amount of surrounding air at this, burn more anxious thoroughly strong.
Subsequently, secondary air channel aperture is regulated by secondary air regulation device 4 according to case of fire, and then regulate Secondary Air air quantity and eddy flow angle, total intake and wind speed is adjusted by damper 13, final adjustment flame profile and intensity, make it Thorough combustion under the condition meeting operating load, reduce formation of nitrogen oxides.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (6)
1. an injection boiler combustion gas eddy flow low NO, is characterized in that: burner air flow to comprising air intake successively through air intake, be located at total air compartment (16) at air intake place, the damper (13) be located in total air compartment (16), center air compartment (2), secondary air chamber (5), circumference air compartment (7), overfire air port (8), surrounding air spout (9), centre wind flows through center air compartment (2), the central air hose (14) be connected with center air compartment (2) successively, is positioned at the stabilizer (11) that central air hose (14) exports inside, Secondary Air flows through secondary air chamber (5) successively, the Secondary Air spinning disk (6) be located in secondary air chamber (5), the secondary air duct (15) be connected with secondary air chamber (5), the overfire air port (8) that is located at secondary air duct (15) port, surrounding air flows through circumference air compartment (7), the circumference air compartment (12) be connected with circumference air compartment (7), the surrounding air spout (9) that is located at circumference air compartment (12) port successively, described central air hose (14) is located in secondary air chamber (15), secondary air chamber (15) is located in circumference air compartment (12), central air hose (14), secondary air chamber (15), circumference air compartment (12) three's central shaft is all on central air hose (14) axial line, burning torch (1) is provided with in described central air hose (14), the outlet of burning torch (1) is at secondary air chamber (15) center, described burner is provided with a gas burner (10), described gas burner (10) comprises gas distributor (3) and coupled and be located at central air hose (14) one group of gas gun (18) outward, gas gun (18) even circumferential is distributed in secondary air chamber (5), gas burner (10) ecto-entad is through center air compartment (2) and secondary air chamber (15).
2. injection boiler combustion gas eddy flow low NO according to claim 1, is characterized in that: described burning torch (1) axial line is on central air hose (14) axial line.
3. injection boiler combustion gas eddy flow low NO according to claim 1, is characterized in that: described Secondary Air spinning disk (6) is connected with a secondary air regulation device (4).
4. injection boiler combustion gas eddy flow low NO according to claim 1, is characterized in that: described stabilizer is for being arranged on the swirl vane assembly of central air hose (12) inner walls.
5. injection boiler combustion gas eddy flow low NO according to claim 1, is characterized in that: described secondary air chamber (15) end is reducing conical pipe.
6. injection boiler combustion gas eddy flow low NO according to claim 1, is characterized in that: be provided with flame detector in described central air hose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610035684.8A CN105526588A (en) | 2016-01-19 | 2016-01-19 | Fuel gas swirling low-nitrogen burner of steam-injection boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610035684.8A CN105526588A (en) | 2016-01-19 | 2016-01-19 | Fuel gas swirling low-nitrogen burner of steam-injection boiler |
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| CN105526588A true CN105526588A (en) | 2016-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610035684.8A Pending CN105526588A (en) | 2016-01-19 | 2016-01-19 | Fuel gas swirling low-nitrogen burner of steam-injection boiler |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105805746A (en) * | 2016-05-12 | 2016-07-27 | 徐州科融环境资源股份有限公司 | Classified-combustion fuel gas low-nitrogen combustor |
| CN108413415A (en) * | 2018-04-03 | 2018-08-17 | 武汉武锅能源工程有限公司 | A kind of highly concentrated odor combustion device |
| CN110107894A (en) * | 2019-06-04 | 2019-08-09 | 唐山金沙燃烧热能股份有限公司 | A kind of ultralow nitrogen metal surface combustion system of high-power anti-backfire |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01167502A (en) * | 1987-12-22 | 1989-07-03 | Nkk Corp | Burner with low nox |
| CN101029732A (en) * | 2006-03-01 | 2007-09-05 | 广州市优华能源技术有限公司 | Multi-purpose burner |
| CN102003710A (en) * | 2010-12-10 | 2011-04-06 | 上海诺特飞博燃烧设备有限公司 | Low emission high-power staged-combustion gas burner and gas collocation method thereof |
| CN202002096U (en) * | 2011-03-25 | 2011-10-05 | 武汉华是能源环境工程有限公司 | Water-coal-slurry low-nitrogen swirl burner |
-
2016
- 2016-01-19 CN CN201610035684.8A patent/CN105526588A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01167502A (en) * | 1987-12-22 | 1989-07-03 | Nkk Corp | Burner with low nox |
| CN101029732A (en) * | 2006-03-01 | 2007-09-05 | 广州市优华能源技术有限公司 | Multi-purpose burner |
| CN102003710A (en) * | 2010-12-10 | 2011-04-06 | 上海诺特飞博燃烧设备有限公司 | Low emission high-power staged-combustion gas burner and gas collocation method thereof |
| CN202002096U (en) * | 2011-03-25 | 2011-10-05 | 武汉华是能源环境工程有限公司 | Water-coal-slurry low-nitrogen swirl burner |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105805746A (en) * | 2016-05-12 | 2016-07-27 | 徐州科融环境资源股份有限公司 | Classified-combustion fuel gas low-nitrogen combustor |
| CN105805746B (en) * | 2016-05-12 | 2017-12-15 | 徐州科融环境资源股份有限公司 | A kind of fractional combustion combustion gas low NO |
| CN108413415A (en) * | 2018-04-03 | 2018-08-17 | 武汉武锅能源工程有限公司 | A kind of highly concentrated odor combustion device |
| CN110107894A (en) * | 2019-06-04 | 2019-08-09 | 唐山金沙燃烧热能股份有限公司 | A kind of ultralow nitrogen metal surface combustion system of high-power anti-backfire |
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| PB01 | Publication | ||
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Application publication date: 20160427 |