CN106032907B - Blast furnace gas burner igniter - Google Patents
Blast furnace gas burner igniter Download PDFInfo
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- CN106032907B CN106032907B CN201510107201.6A CN201510107201A CN106032907B CN 106032907 B CN106032907 B CN 106032907B CN 201510107201 A CN201510107201 A CN 201510107201A CN 106032907 B CN106032907 B CN 106032907B
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- blast furnace
- furnace gas
- pure oxygen
- gas burner
- fuel supply
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Abstract
The present invention relates to blast furnace gas recycling field more particularly to a kind of blast furnace gas combustion ignition installations and ignition method.A kind of blast furnace gas burner igniter, the fuel supply rifle being arranged on including one at blast furnace gas burner spout axle center；Air supply pipe of the coaxial package outside fuel supply rifle；It is arranged on the steady combustion cover of fuel supply rifle front end；The steady combustion cover and combustion-supporting pure oxygen pipeline connection.A kind of blast furnace gas burner ignition method when fuel oil burns to lead at blast furnace gas burner spout and fuel nozzle pure oxygen synchronize light blast furnace gas, cut-out fuel supply keeps pure oxygen supply after burning a period of time, until boiler temperature reaches the requirement of blast furnace gas stabilization burning.The calorific value heating boiler of the invention for mainly utilizing blast furnace gas itself, the stable burning until realizing blast furnace gas, smooth ignition；The heat source that this ignition way utilizes is mainly blast furnace gas, reduces the required amount of fuel of boiler startup, has saved the igniting cost of boiler.
Description
Technical field
The present invention relates to blast furnace gas recycling field more particularly to a kind of blast furnace gas combustion ignition installations.
Background technology
Blast furnace gas is a kind of tail gas of the steel-making blast furnace discharge of low heat value, as a kind of gaseous fuel, wherein non-combustible
Ingredient is more, and combustible component is less, and combustible component is about 30% or so, therefore its calorific capacity is relatively low, and burning velocity is slower,
Fiery temperature is more than 700 DEG C, is not easy to catch fire.In view of being recycled to tail gas, for domestic large-scale steel-making enterprise power plant for self-supply,
Usually generated electricity using cheap blast furnace gas as boiler oil.But because blast furnace gas calorific value is relatively low, therefore large-scale steel-making
The blast furnace gas burner that the boiler of industrial power plant uses is commonly designed that gas velocity is higher, this results in it in relatively low burner hearth temperature
It cannot stablize burning under degree.Therefore, burn blast furnace gas boiler in black furnace start-up course firstly the need of input largely help
Fuel oil burning preheating is fired, blast furnace gas is put into again when boiler bulk temperature is higher than the ignition point of blast furnace gas, makes its combustion of catching fire
It burns, is finally reached the purpose that boiler cold-state igniting starts.This to need a large amount of combustion-supporting combustion of input in boiler black furnace start-up course
Oil, operating cost are higher.
Invention content
The technical problems to be solved by the invention are to provide a kind of blast furnace gas burner igniter, utilize a small amount of fuel oil
Burning starting stage can combustion-supporting blast furnace gas, the main calorific value heating boiler for utilizing blast furnace gas itself, Zhi Daoshi
Existing blast furnace gas stablizes burning, smooth ignition；Solving existing ignition way heating boiler and fully relying on fuel oil leads to fuel oil
Consume the defects of excessive.
The invention is realized in this way：A kind of blast furnace gas burner igniter, including blast furnace gas burner spout
With grease gun igniting device, the grease gun igniting device includes：
One is arranged on the fuel supply rifle at blast furnace gas burner spout axle center；
Air supply pipe of the coaxial package outside fuel supply rifle；
It is arranged on the steady combustion cover of fuel supply rifle front end；
The steady combustion cover and combustion-supporting pure oxygen pipeline connection.
A pure oxygen cavity is provided on the steady combustion cover, and the pure oxygen cavity is annular housing, pure oxygen cavity coaxial package
In fuel supply rifle front end, separated between the gas outlet of pure oxygen cavity and steady combustion cover by annular partition, on the annular partition
Circular array shows several through-holes, and the combustion-supporting pure oxygen pipeline is connected with the air inlet of pure oxygen cavity.
The fuel supply rifle is gasified fuel spray gun.
A kind of blast furnace gas burner ignition method, one burning-flame port of setting cover the fuel oil of blast furnace gas burner spout
Nozzle, when fuel oil burns to lead at blast furnace gas burner spout and fuel nozzle pure oxygen synchronize light blast furnace gas, burn
Fuel supply is cut off after a period of time and keeps pure oxygen supply, until boiler temperature reaches the requirement that blast furnace gas stablizes burning,
Pure oxygen supply is cut off, it is final to realize boiler smooth ignition.
Blast furnace gas burner igniter of the present invention can combustion-supporting blast furnace in the starting stage of burning using a small amount of fuel oil
Coal gas, the main calorific value heating boiler for utilizing blast furnace gas itself, until realizing that stablizing for blast furnace gas is burnt, smooth point
Fire；The heat source that this ignition way utilizes is mainly blast furnace gas, reduces the required amount of fuel of boiler startup, has saved boiler
Igniting cost.
Description of the drawings
Fig. 1 is the dimensional structure diagram of blast furnace gas burner igniter in the present invention；
Fig. 2 is the main structure diagram of blast furnace gas burner igniter in the present invention；
Fig. 3 is the main structure diagram of grease gun igniting device in the present invention.
In figure：1 blast furnace gas burner spout, 2 grease gun igniting devices, 3 fuel supply rifles, 4 fuel oils, 5 air supply pipes, 6
Combustion-supporting pure oxygen pipeline, 7 steady combustion covers, 8 pure oxygen cavitys, 9 annular partitions, 10 through-holes.
Specific embodiment
With reference to specific embodiment, the present invention is further explained.It should be understood that these embodiments are merely to illustrate the present invention
Rather than it limits the scope of the invention.In addition, it should also be understood that, after the content of the invention stated has been read, people in the art
Member can make various changes or modifications the present invention, and such equivalent forms equally fall within the application the appended claims and limited
Range.
Embodiment 1
As shown in Figure 1, 2, 3, a kind of blast furnace gas burner igniter, including blast furnace gas burner spout 1 and oil
Rifle igniter 2, the grease gun igniting device 2 include fuel supply rifle 3, air supply pipe 5 and steady combustion cover 7, in the present embodiment institute
Fuel supply rifle 3 is stated as gasified fuel spray gun, fuel supply rifle 3 is arranged at the axle center of blast furnace gas burner spout 1, described
For 5 coaxial package of air supply pipe outside fuel supply rifle 3, the steady combustion cover 7 is arranged on the front end of fuel supply rifle 3, steady combustion cover 7
Combustion-supporting pure oxygen pipeline 6 is communicated with, the ignition temperature of fuel oil is improved using pure oxygen, reduces the firing temperature of blast furnace gas, it is final real
The simultaneous ignition of existing blast furnace gas and fuel oil so that be heated to stablize burning during this in boiler, blast furnace gas equally into
Combustion heating is gone, this reduces the consumption of fuel oil.
In the present embodiment, for the combustion-supporting pure oxygen of the supply of stable and uniform, the steady combustion is covered is provided with a pure oxygen on 7
Cavity 8, the pure oxygen cavity 8 are annular housing, 8 coaxial package of pure oxygen cavity in 3 front end of fuel supply rifle, pure oxygen cavity 8
It is separated between gas outlet and steady combustion cover 7 by annular partition 9, circular array shows several through-holes 10 on the annular partition 9, described
Combustion-supporting pure oxygen pipeline 6 is connected with the air inlet of pure oxygen cavity 8.
A kind of blast furnace gas burner ignition method, one burning-flame port of setting cover the fuel oil of blast furnace gas burner spout
Nozzle, when fuel oil burns to lead at blast furnace gas burner spout and fuel nozzle pure oxygen synchronize light blast furnace gas, burn
Fuel supply is cut off after a period of time and keeps pure oxygen supply, until boiler temperature reaches the requirement that blast furnace gas stablizes burning,
Pure oxygen supply is cut off, it is final to realize boiler smooth ignition.
Entire ignition process is divided into following several stages
1) plus pure oxygen assists combustion-supporting fuel oil burning
In boiler ignition start, the fuel oil 4 of igniting is sprayed by fuel supply rifle 3, and fuel oil 4 burns required air
It is sprayed by air supply pipe 5, the air needed for burning is provided for fuel oil.After fuel oil 4 is lighted in steady combustion cover 7, pure oxygen is from pure oxygen
Cavity 8 is sent into steady combustion cover 7, and the burning of fuel oil 4, the shape at blast furnace gas burner spout 1 are finally promoted because adding in pure oxygen
Into the high temperature heat source for covering full spout.
Because of the addition of pure oxygen, fuel oil combustion intensity, fuel oil combustion flame temperature higher, in blast furnace gas burner are improved
Nozzle forms the heat source for the sufficiently high temperature for covering full spout, is conducive to light the blast furnace gas of low heat value；
2) blast furnace gas combustion
After the continuous high temperature heat source for covering full spout is formed at blast furnace gas burner spout 1, when blast furnace gas and air
It can be lighted rapidly in blast furnace gas burner spout 1 after the grid spout ejection of blast furnace gas burner, at this time blast furnace
The heat of the generation of gas-fired improves boiler temperature together in cooperation fuel oil；
3) igniting later stage
With blast furnace gas combustion certain time, make the rising of boiler hearth temperature, when fire box temperature reaches about 700 DEG C
Afterwards, stop the input of fuel oil 4, blast furnace gas, while being continuously added by pure oxygen directly lighted by the volume seat of high-temperature flue gas,
The combustion stability of blast furnace gas is improved, the supply of cut-out pure oxygen after the firing temperature of blast furnace gas is finally reached, makes boiler suitable
Profit igniting.
Claims (2)
1. a kind of blast furnace gas burner igniter, including blast furnace gas burner spout (1) and grease gun igniting device (2),
It is characterized in, the grease gun igniting device (2) includes：
One is arranged on the fuel supply rifle (3) at blast furnace gas burner spout (1) axle center；
Air supply pipe (5) of the coaxial package in fuel supply rifle (3) outside；
It is arranged on the steady combustion cover (7) of fuel supply rifle (3) front end；
The steady combustion cover (7) connects with combustion-supporting pure oxygen pipeline (6)；
A pure oxygen cavity (8) is provided on the steady combustion cover (7), and the pure oxygen cavity (8) is annular housing, pure oxygen cavity (8)
Coaxial package passes through annular partition (9) between fuel supply rifle (3) front end, the gas outlet of pure oxygen cavity (8) and steady combustion cover (7)
It separates, circular array shows several through-holes (10), the combustion-supporting pure oxygen pipeline (6) and pure oxygen cavity (8) on the annular partition (9)
Air inlet connection.
2. blast furnace gas burner igniter as described in claim 1, it is characterized in that：The fuel supply rifle (3) is gas
Change fuel lance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510107201.6A CN106032907B (en) | 2015-03-12 | 2015-03-12 | Blast furnace gas burner igniter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510107201.6A CN106032907B (en) | 2015-03-12 | 2015-03-12 | Blast furnace gas burner igniter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106032907A CN106032907A (en) | 2016-10-19 |
| CN106032907B true CN106032907B (en) | 2018-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510107201.6A Active CN106032907B (en) | 2015-03-12 | 2015-03-12 | Blast furnace gas burner igniter |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107300170A (en) * | 2017-08-11 | 2017-10-27 | 云汇环保科技南通有限公司 | A kind of fine coal all-oxygen combustion device on smelting kiln |
| CN110822421A (en) * | 2019-12-14 | 2020-02-21 | 南京建安机械制造有限公司 | Ignition device of combustor and ignition method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63171810A (en) * | 1987-01-09 | 1988-07-15 | Nkk Corp | Firing method for oxygen blast furnace |
| KR20050004998A (en) * | 2003-07-01 | 2005-01-13 | 한국에너지기술연구원 | a multi-inlet combustor for low calorific value gases and combustion method thereof |
| CN101324341A (en) * | 2008-07-09 | 2008-12-17 | 西安热工研究院有限公司 | Apparatus and method of pulverized coal boiler pure oxygen ignition / steady combustion |
| CN101561150A (en) * | 2009-06-02 | 2009-10-21 | 向卫 | Oxygen-enriched tiny-oil ignition combustion-stabilizing device |
| CN202132947U (en) * | 2011-07-01 | 2012-02-01 | 中国计量学院 | Porous medium burner for burning low heat value gas fuel |
-
2015
- 2015-03-12 CN CN201510107201.6A patent/CN106032907B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63171810A (en) * | 1987-01-09 | 1988-07-15 | Nkk Corp | Firing method for oxygen blast furnace |
| KR20050004998A (en) * | 2003-07-01 | 2005-01-13 | 한국에너지기술연구원 | a multi-inlet combustor for low calorific value gases and combustion method thereof |
| CN101324341A (en) * | 2008-07-09 | 2008-12-17 | 西安热工研究院有限公司 | Apparatus and method of pulverized coal boiler pure oxygen ignition / steady combustion |
| CN101561150A (en) * | 2009-06-02 | 2009-10-21 | 向卫 | Oxygen-enriched tiny-oil ignition combustion-stabilizing device |
| CN202132947U (en) * | 2011-07-01 | 2012-02-01 | 中国计量学院 | Porous medium burner for burning low heat value gas fuel |
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| Publication number | Publication date |
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| CN106032907A (en) | 2016-10-19 |
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