CN203836962U - Burner capable of burning blast furnace gas completely - Google Patents
Burner capable of burning blast furnace gas completely Download PDFInfo
- Publication number
- CN203836962U CN203836962U CN201420138153.8U CN201420138153U CN203836962U CN 203836962 U CN203836962 U CN 203836962U CN 201420138153 U CN201420138153 U CN 201420138153U CN 203836962 U CN203836962 U CN 203836962U
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- Prior art keywords
- furnace gas
- combustion
- section
- sections
- steady combustion
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- 238000002485 combustion reaction Methods 0.000 claims abstract description 97
- 238000009826 distribution Methods 0.000 claims abstract description 29
- 239000000446 fuel Substances 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 35
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 238000010926 purge Methods 0.000 description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000003034 coal gas Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010304 firing Methods 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 239000000567 combustion gas Substances 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 230000009965 odorless effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 206010017740 Gas poisoning Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 206010044565 Tremor Diseases 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 231100000086 high toxicity Toxicity 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000001105 regulatory effect Effects 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
- 238000013024 troubleshooting Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Landscapes
- Regulation And Control Of Combustion (AREA)
Abstract
The utility model belongs to the technical field of burners of blast furnace gas and aims to provide a burner capable of burning blast furnace gas completely without auxiliary fuel ignition. The burner comprises a burner casing, wherein a blower is arranged at one end of the burner casing; a gas main pipeline is arranged on one side of the burner casing; the burner is characterized in that a two-stage air distribution chamber connected with the blower is arranged in the burner casing; a one-stage air distribution pipe connected with the blower is arranged in the two-stage air distribution chamber; a one-stage air adjusting valve is arranged in the one-stage air distribution pipe; a stable combustion air chamber is arranged at the end part of the one-stage air distribution pipe; a one-stage gas supply pipeline is arranged on the gas main pipeline; a primary combustion head at the end part of the one-stage gas supply pipeline is arranged in the stable combustion air chamber; a stable combustion barrel is arranged outside the primary combustion head; an ignition needle, corresponding to the primary combustion head, is arranged in the stable combustion barrel; a stable combustion plate is arranged at the open end of the stable combustion barrel; the gas main pipeline is connected with main combustion heads in the two-stage air distribution room through a two-stage air supply pipe; the main combustion heads are uniformly and annularly distributed outside the stable combustion air chamber.
Description
Technical field
The utility model belongs to blast furnace gas combustion machine technology field, is specifically related to a kind of fully burning blast-furnace gas combustor.
Background technology
High coal gas belongs to fuel gas with low heat value, and blast furnace gas contains H
2(1.5-3.0%), CH
4(0.2-0.5%), CO(25-30%), CO
2(9-12%), N
2(55-60%), O
2(0.2-0.4%); Density is 1.29-1.30Kg/Nm
3.Main combustible component is CO, and general CO content is in 25% left and right, 600～800 kilocalories/cubic metre of calorific capacitys; Blast furnace gas is the gas of colorless and odorless, odorless, thus because of the very high toxicity of CO content very big; Burning velocity is slow, flame is longer; Ignition temperature is greater than 700 DEG C.
Blast furnace gas ignition difficulty, stable ignition is more difficult.Calorific value is not high, 600～800 kilocalories/cubic metre.Wherein contain a large amount of fire-suppressant gas: nitrogen and CO
2.Nitrogen and CO
2absorb heat, do not join burning, and reduce ignition temperature.
Because blast furnace gas is mist, affected by various factors, can not smooth combustion even if light.Macro manifestations is that ignition temperature is low.Ignition electrode is point always, sometimes has fire, sometimes without fire.
For air feed: burn while not giving wind, do not had fire.Just more cannot light to wind, after wind mixes with coal gas, oxygen has had, nitrogen has also increased, and mixed gas concentration in explosion limit (lower limit) in addition, more cannot have been lighted.
At present the ignition method of blast furnace gas is: do auxiliary firing with other high heat value gas, and liquefied gas, natural gas, coke-stove gas, the funds are also larger, and pretty troublesome, invest also not little.
At present, the enterprises such as most steel mills, are directly discharged into blast furnace gas in atmosphere conventionally, not only environment are caused to very big destruction, but also waste energy in a large number.
In addition, due to blast-furnace gas pressure shakiness, temperature is low.And the renewal of technology, causes calorific value of gas lower.More be difficult to realize clean burn and the pure burning of blast furnace gas.
Summary of the invention
The utility model is exactly for the problems referred to above, provides a kind of without auxiliary fuel igniting, and flameholding, can realize the blast furnace gas combustion machine of clean burn.
For realizing above-mentioned purpose of the present utility model, the utility model adopts following technical scheme, the utility model comprises burning casing, one end of burning casing is provided with blower fan, the side of burning casing is provided with gas header pipe road, it is characterized in that: the secondary distribution plenum for being connected with blower fan in burning casing, in secondary distribution plenum, be provided with the connected one-level aid distributing pipe of same blower fan, in one-level aid distributing pipe, be provided with one section of adjusting valve; The end of one-level aid distributing pipe is provided with steady combustion air compartment; On described gas header pipe road, be provided with one section of air feed branch road, the primary combustion head of one section of air feed branch road end is arranged in described steady combustion air compartment; Primary combustion head is outside equipped with steady combustion cylinder, in steady combustion cylinder, is provided with ignition electrode corresponding to primary combustion head, and the openend of steady combustion cylinder is provided with steady combustion plate; Described gas header pipe road is connected with the main combustion head in secondary distribution plenum by two sections of air supply pipes; Described main combustion head uniform ring is distributed in outside described steady combustion air compartment.
The beneficial effects of the utility model: 1, due to design feature of the present utility model, the air distribution of the air distribution of primary combustion head and air inlet and main combustion head and air inlet are separate; Therefore, only need by regulating the air feed speed of one section of air feed branch road and the air feed speed of one-level aid distributing pipe, can make being controlled in steady combustion air compartment of flame stabilization that primary combustion hair goes out, the interference of acceptor's combustion head and secondary distribution plenum air distribution, does not make the utility model flameholding.
2,, when the utility model uses the steady flame firing in cylinder to light main combustion head, the flame in steady combustion cylinder also has the effect of the combustion gas in main combustion head being carried out to preheating, can effectively improve blast furnace gas firing range width; And by controlling the combustion gas dispensing of fan delivery and main combustion head, can realize large adjusting ratio.
3, the utility model, by the cooperation of one-level aid distributing pipe and one section of adjusting valve, can well be controlled air quantity and wind speed in steady combustion air compartment; One section of air feed branch road provides blast furnace gas for primary combustion head; After wind in blast furnace gas and steady combustion air compartment mixes, be easy to reach ignition condition, only need to use ignition electrode fire can be lighted; Flame smooth combustion under the effect of steady combustion cylinder and steady combustion plate; Reaching without auxiliary fuel is ignitable object.
4, the utility model igniting is easy, easy to use, makes blast furnace gas without any processing, and ignition process and common natural gas fired combustion process are basic identical, want just to light and light, and want to stop just stopping.Utilize the waste gas of useless and contaminated environment can realize heating in factory building, dry the functions such as even generating; Turn waste into wealth, there is huge economic benefit and social benefit.
5, the utility model, without heat storage, can be realized pure burning and clean burn.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation that surely fires plate.
Fig. 3 is the A-A cutaway view of Fig. 2.
In accompanying drawing 1 for master control valve, 2 for gas header pipe road, 3 for pressure switch, 4 be two sections of valve sets, 5 be one section of valve sets, 6 be one section of air feed branch road, 7 be two sections of air supply pipes, 8 be main combustion head, 9 for steady combustion plate, 10 for steady combustion cylinder, 11 for primary combustion head, 12 for steady combustion air compartment, 13 for secondary distribution plenum, 14 be two sections of distribution covers, 15 for one-level aid distributing pipe, 16 for operating grip, 17 be one section of adjusting valve, 18 for burning casing, 19 for blower fan, 20 be fin opening.
Detailed description of the invention
The utility model comprises burning casing 18, one end of burning casing 18 is provided with blower fan 19, the side of burning casing 18 is provided with gas header pipe road 2, it is characterized in that: the secondary distribution plenum 13 for being connected with blower fan 19 in burning casing 18, in secondary distribution plenum 13, be provided with the connected one-level aid distributing pipe 15 of same blower fan 19, in one-level aid distributing pipe 15, be provided with one section of adjusting valve 17; The end of one-level aid distributing pipe 15 is provided with steady combustion air compartment 12; The primary combustion 11 that is provided with 6, one sections of air feed branch road 6 ends of one section of air feed branch road on described gas header pipe road 2 is arranged in described steady combustion air compartment 12; Primary combustion 11 is outside equipped with steady combustion cylinder 10, in steady combustion cylinder 10, is provided with ignition electrode corresponding to primary combustion 11, and the openend of steady combustion cylinder 10 is provided with steady combustion plate 9; Described gas header pipe road 2 is connected with the main combustion head 8 in secondary distribution plenum 13 by two sections of air supply pipes 7; Described main combustion head 8 uniform ring are distributed in outside described steady combustion air compartment 12.
Described primary combustion 11 is set to hemispherical, the uniform air vent that is provided with of semispherical surface.
The described steady combustion cylinder 10 uniform burner ports that are provided with in surface.
The surperficial annular arrangement of described steady combustion plate 9 is provided with fin opening 20; The direction of fin opening 20 is all identical.
Because blast furnace gas calorific value is low, minimum 2508KJ/Nm
3(600kal/Nm
3), and pressure oscillation is large, often pressure fluctuates within the scope of 2～15Kpa, so steady combustion difficulty after igniting, by steady combustion plate 9 and steady combustion cylinder 10, and the cooperation of combustion head, make flame level off to 0 at the front flow velocity of steady combustion plate 9, be conducive to that flame combustion is stable not to waft, further improve the object of smooth combustion.
Described one section of air feed branch road 6, through burning casing 18, through secondary distribution plenum 13 and one-level aid distributing pipe 15, stretches in steady combustion air compartment 12, and is connected with a combustion head 11.
Described two sections of air supply pipes 7 are connected with two sections of distribution covers 14 outside burning casing 18, and the main combustion head 8 in described secondary distribution plenum 13 is connected with described two sections of distributions cover 14.Compact conformation, volume is little; Can be applicable to multiple different occasion, as: boiler, hot-blast stove, drying oven etc.
Described burning casing 18 is outside equipped with the same section of operating grip 16 that adjusting valve 17 is connected.
On described gas header pipe road 2, be provided with master control valve 1, on described one section of air feed branch road 6, be provided with one section of valve sets 5; On described two sections of air supply pipes 7, be provided with two sections of valve sets 4.
Described master control valve 1, one section of valve sets 5 are all connected with controller with two sections of valve sets 4, in described steady combustion cylinder 10, are provided with the connected fire sighting pin of same controller.
Described fire sighting pin is set to ion fire sighting pin.Fire sighting pin length can be 200mm, and thickness can be φ 8mm.
General blast furnace gas fire sighting adopts ultraviolet ray inspection flame, and still, during due to blast furnace coal qi exhaustion fire, unburned coal gas amount is larger, easily occurs the danger of gas poisoning and detonation, blast.Because fire has the character of electrical conduction current, in catching fire, have faint electric current and pass through, adopt ion fire sighting pin, fire sighting is very sensitive, once misfire, immediately one section of valve sets 5 and two sections of valve sets 4 is closed, and reports to the police.
Described controller also can be connected with the pressure switch 3 on gas header pipe road 2.Further improve safety coefficient.
Described controller also can be connected with alarm with leak detector.
Described blower fan 19 is for adopting variable-frequency motor.
Below in conjunction with brief description of the drawings use procedure of the present utility model: open master control valve 1, start air feed, start control button, two sections of valve sets 4 are opened, and pressure switch 3 detects gas header pipe road 2; As normal in valve, without leak source, blower fan 19 starts, and full trrottle carries out front purging, purges and finishes, and air door turns down automatically.One section of valve sets 5 is opened, and starts air feed.Manually adjust one section of adjusting valve 17, aperture is ascending, adopts ac step-up transformer 1100V, and the high-pressure electronic ignition electrode of power 100W is lighted a fire; Because blast furnace gas combustion speed is slow, through test determination, the duration of ignition, this was one section of burning generally about 20 seconds.
Fire sighting pin detects that after the igniting signal in steady combustion cylinder 10, two sections of valve sets 4 are opened air feed, and throttle opening strengthens.Give two sections of air supply pipe 7 air feed.Main combustion head 8 is started working; Main combustion head 8 can vary in size according to burner, is set to more than five.
In the time that leak source detector is tested with problem or fire sighting no signal, the utility model automatic alarm.One section of valve sets 5 and two sections of valve sets 4 are closed simultaneously, and full trrottle, purges.After purging, system is closed automatically.Carry out trouble shooting processing.Fault restarts after getting rid of.
When shutdown, two sections of valve sets 4, one section of valve sets 5 order are closed, and full trrottle, carries out automatic post-purge, purges and finishes, and blower fan 19 cuts out.System-down.Close main control valve.
Be understandable that, above about specific descriptions of the present utility model, only for being described, the utility model is not limited to the described technical scheme of the utility model embodiment, those of ordinary skill in the art is to be understood that, still can modify or be equal to replacement the utility model, to reach identical technique effect; Use needs as long as meet, all within protection domain of the present utility model.
Claims (10)
1. fully burning blast-furnace gas combustor, comprise burning casing (18), one end of burning casing (18) is provided with blower fan (19), the side of burning casing (18) is provided with gas header pipe road (2), it is characterized in that: the secondary distribution plenum (13) for being connected with blower fan (19) in burning casing (18), in secondary distribution plenum (13), be provided with the connected one-level aid distributing pipe (15) of same blower fan (19), in one-level aid distributing pipe (15), be provided with one section of adjusting valve (17); The end of one-level aid distributing pipe (15) is provided with steady combustion air compartment (12); On described gas header pipe road (2), be provided with one section of air feed branch road (6), the primary combustion head (11) of one section of air feed branch road (6) end is arranged in described steady combustion air compartment (12); Primary combustion head (11) is outside equipped with steady combustion cylinder (10), in steady combustion cylinder (10), is provided with ignition electrode corresponding to primary combustion head (11), and the openend of steady combustion cylinder (10) is provided with steady combustion plate (9); Described gas header pipe road (2) is connected with the main combustion head (8) in secondary distribution plenum (13) by two sections of air supply pipes (7); Described main combustion head (8) uniform ring is distributed in outside described steady combustion air compartment (12).
2. fully burning blast-furnace gas combustor according to claim 1, is characterized in that: described primary combustion head (11) is set to hemispherical, the uniform air vent that is provided with of semispherical surface.
3. fully burning blast-furnace gas combustor according to claim 1, is characterized in that: the uniform burner port that is provided with in described steady combustion cylinder (10) surface.
4. fully burning blast-furnace gas combustor according to claim 1, is characterized in that: the surperficial annular arrangement of described steady combustion plate (9) is provided with fin opening (20); The direction of fin opening (20) is all identical.
5. fully burning blast-furnace gas combustor according to claim 1, it is characterized in that: described one section of air feed branch road (6) is through burning casing (18), through secondary distribution plenum (13) and one-level aid distributing pipe (15), stretch in steady combustion air compartment (12), and be connected with a combustion head (11).
6. fully burning blast-furnace gas combustor according to claim 1, it is characterized in that: described two sections of air supply pipes (7) are connected with the outer two sections of distribution covers (14) of burning casing (18), and the main combustion head (8) in described secondary distribution plenum (13) is connected with described two sections of distribution covers (14).
7. fully burning blast-furnace gas combustor according to claim 1, is characterized in that: described burning casing (18) is outside equipped with the connected operating grip (16) of same section of adjusting valve (17).
8. fully burning blast-furnace gas combustor according to claim 1, is characterized in that: on described gas header pipe road (2), be provided with master control valve (1), be provided with one section of valve sets (5) on described one section of air feed branch road (6); On described two sections of air supply pipes (7), be provided with two sections of valve sets (4).
9. fully burning blast-furnace gas combustor according to claim 8, it is characterized in that: described master control valve (1), one section of valve sets (5) and two sections of valve sets (4) are all connected with controller, in described steady combustion cylinder (10), be provided with the connected fire sighting pin of same controller.
10. fully burning blast-furnace gas combustor according to claim 9, is characterized in that: described controller is connected with the pressure switch (3) on gas header pipe road (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420138153.8U CN203836962U (en) | 2014-03-26 | 2014-03-26 | Burner capable of burning blast furnace gas completely |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420138153.8U CN203836962U (en) | 2014-03-26 | 2014-03-26 | Burner capable of burning blast furnace gas completely |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203836962U true CN203836962U (en) | 2014-09-17 |
Family
ID=51514794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420138153.8U Expired - Fee Related CN203836962U (en) | 2014-03-26 | 2014-03-26 | Burner capable of burning blast furnace gas completely |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203836962U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103836627A (en) * | 2014-03-26 | 2014-06-04 | 任成勇 | Blast furnace gas burner without auxiliary fuel ignition |
-
2014
- 2014-03-26 CN CN201420138153.8U patent/CN203836962U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103836627A (en) * | 2014-03-26 | 2014-06-04 | 任成勇 | Blast furnace gas burner without auxiliary fuel ignition |
| CN103836627B (en) * | 2014-03-26 | 2015-11-18 | 任成勇 | Without the blast furnace gas combustion machine of auxiliary fuel igniting |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140917 |