CN202938299U - Gasification furnace burner - Google Patents

Gasification furnace burner Download PDF

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Publication number
CN202938299U
CN202938299U CN 201220609607 CN201220609607U CN202938299U CN 202938299 U CN202938299 U CN 202938299U CN 201220609607 CN201220609607 CN 201220609607 CN 201220609607 U CN201220609607 U CN 201220609607U CN 202938299 U CN202938299 U CN 202938299U
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China
Prior art keywords
burner
fuel gas
goes
ignition
central tube
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Ceased
Application number
CN 201220609607
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Chinese (zh)
Inventor
王明坤
姜从斌
郭进军
信伟
周勇
马冬
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Changzheng Engineering Co Ltd
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Changzheng Engineering Co Ltd
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Application filed by Changzheng Engineering Co Ltd filed Critical Changzheng Engineering Co Ltd
Priority to CN 201220609607 priority Critical patent/CN202938299U/en
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Publication of CN202938299U publication Critical patent/CN202938299U/en
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Abstract

The utility model relates to a burner used for starting and preheating of a gasification furnace and using combustible gases as the fuel. A central tube, an inner-layer tube, a middle-layer tube and an outer-layer tube are arranged at the center successively from inside to outside, and an ignition rod is inserted at the center of the central tube. Various medium channels are formed in a space between the ignition rod and the tubes, and are respectively an ignition fuel gas channel, an ignition oxidizer channel, a starting fuel gas channel and a starting oxidizer channel from inside to outside. The burner is characterized in that the central tube and the ignition rod are arranged inside the inner-layer tube, and the inner-layer tube is connected with a combustion stabilizing device; the location of the ignition rod avoids ablation by high temperature flames; the combustion stabilizing device forms a partial combustion chamber of an ignition fuel gas, so that the ignition flames are in reliable combustion, successful ignition of a starting fuel gas is ensured, and the reliability of ignition and the stability of the starting flames can be ensured. A shielding gas is displaced in the starting process, so that pressure balance is achieved between the inside and outside of the burner, and no high-temperature flue gas flows back to a burner channel, thus prolonging the service life of the burner.

Description

Gasification furnace burner
Technical field
The utility model relates to a kind of burner for gasification furnace, particularly a kind of burner of the preheating that goes into operation for gasification furnace.
Background technology
In existing coal gasification apparatus, the main fuel multiselect regardless of the physical state of coal, utilizes thermal-flame that its success rate of directly lighting is lower with dry pulverized coal or water-coal-slurry.And more ripe ignition schemes is " three grades of igniting " at present, its technical process is: at first, directly light more fire-hazardous gaseous fuel and form thermal-flame in igniter burner, by this flame, startup burner is lighted, and gasification furnace is boosted give birth to load, gasification furnace is preheating to high temperature, middle pressure condition the most at last, then throws coal by process burner, gasification furnace ignition trigger overall process is namely completed in spontaneous combustion after coal enters and runs into hot environment and oxidant in gasification furnace and reach ignition condition.
In practical engineering application, the warm of gasification furnace adopts igniter burner and startup burner cooperation more, and both mostly be independent separately, so complex operation, process are complicated.
Especially, at present take the startup burner of fuel oil as the fuel that goes into operation, structure and technological process are more complicated, and cost of investment is large, and the atomizing type of fuel oil is undesirable, affects the well distributed of Combustion Flow Field, causes the startup burner working life shorter.
Igniter burner often adopts fire rod center fire mode, and the ignition location of fire rod often is positioned at combustor external, and in the gasifier to start working process, near the long-time exposed flame of fire rod, easily ablated.At present, industrial in order to prevent the fire rod ablation problem, adopt the packaged type fire rod, stretch out burner during fire rod work, the after-contraction of not working is inner to burner, and this sparking mode cost of investment is large, operate more complicatedly, and the sealing problem under HTHP also is difficult to resolve certainly.
The utility model content
Therefore, the purpose of this utility model is to provide that a kind of gasifier to start working preheat burner take fuel gas as fuel realizes, to solve the following problem that exists in prior art:
(1) many burners cooperation, complicated operation;
(2) with fuel oil for the fuel medium that goes into operation, atomizing effect is poor, the startup burner working life is short;
(3) traditional fixed fire rod works long hours easily ablatedly, and the sealing of packaged type fire rod is incomplete, has leakage problem, and cost of investment is large.
Above-mentioned purpose of the present utility model is by providing a kind of gasifier to start working preheat burner take fuel gas as fuel to realize.This burner comprises: by the fire rod that is positioned at the burner center, central tube, inner layer pipe, middle tube and the outer tube of coaxial arrangement from the inside to the outside, fire rod is built in burner.By a kind of like this structure, can complete independently the process of igniting, the preheating that goes into operation, not need to by or unite other burners, also protected fire rod, avoid the generation of ablation phenomen.
For above technical problem, realize that the technical scheme of the utility model purpose is:
A kind of burner of the preheating that goes into operation take fuel gas as fuel for gasification furnace, its center is disposed with central tube, inner layer pipe, middle tube and outer tube from the inside to the outside, and at insertion point, central tube center lighted torch, space between fire rod and each pipe has formed each medium channel, is respectively from the inside to the outside igniter fuel gas passage, the oxidant channel of lighting a fire, fuel gas passage and the oxidant channel that goes into operation go into operation; It is characterized in that: central tube and fire rod are arranged in inner layer pipe inside, and inner layer pipe is connecting smooth combustion apparatus; The position of fire rod has been avoided by the thermal-flame ablation; Smooth combustion apparatus has formed the partial combustion chamber of igniter fuel gas, makes the ignition flame trouble-free burning, guarantees successfully to light the fuel gas that goes into operation.
Gasifier to start working preheat burner take fuel gas as fuel, it is characterized in that: the burner center is disposed with central tube, inner layer pipe, middle tube and outer tube from the inside to the outside, and at insertion point, central tube center lighted torch, and central tube and fire rod are inner in inner layer pipe, prevent that fire rod is ablated; Space between fire rod and each pipe has formed each medium channel, is respectively from the inside to the outside igniter fuel gas passage, the oxidant channel of lighting a fire, fuel gas passage and the oxidant channel that goes into operation go into operation; Igniting oxidant channel exit has installed smooth combustion apparatus additional, has consisted of partial combustion chamber by it; Igniter fuel gas is connected with igniter fuel gas passage with protection gas and after connecing, two kinds of gases switch by valve, switch protecting gas after the fuel gas that stops lighting a fire, and passing into of gas of protection both protected fire rod, also make the burner internal and external pressure balance, prevent that thermal current is back to burner inside; Igniter fuel gas channel exit has been arranged guide ring, the fire rod head stretches out central tube, igniter fuel gas forms half premixed combustion with the igniting oxidant, and ignition flame is in the inner formation of burner, the undergauge inner chamber of smooth combustion apparatus lengthens flame speed increasing, flame, be conducive to the trouble-free burning of ignition flame, and guarantee successfully to light the fuel gas that goes into operation.
Preferably, the described oxidant channel that goes into operation is provided with swirl-flow devices in its outlet, more is conducive to the tissue of Combustion Flow Field, can select not install additional as required swirl-flow devices.
Preferably, wherein be provided with guide ring at described igniter fuel gas channel exit, it is connecting fire rod and central tube, and make the igniter fuel agent evenly, post the ejection.
Preferably, described central tube, inner layer pipe, middle tube and outer tube all can be substituted by double-deck cooling jacket, greatly prolonging combustion device service life.
Preferably, the described Way out that goes into operation fuel gas passage and the oxidant channel that goes into operation can change, and can adopt with 0 ~ 30 ° of burner axis angle and arrange.
Preferably, the described exit position that goes into operation fuel gas passage and the oxidant channel that goes into operation can be in same plane.
Preferably, can be connected and fixed by welded seal cover plate or flange between described central tube, inner layer pipe, middle tube and outer tube.Every part not only can be dismantled separately and keep in repair, and can not exert an influence to other parts.
Preferably; wherein be connected with igniter fuel gas passage with protection gas and after connecing at igniter fuel gas; two kinds of gases switch by valve; switch protecting gas after the fuel gas that stops lighting a fire; passing into of gas of protection both protected fire rod; also make the burner internal and external pressure balance, prevent that thermal current is back to burner inside.
Preferably, this burner can be arranged on gasification furnace separately by mounting flange, or with the process burner combined type be arranged on gasification furnace, can substitute the startup burner of using in present industry.
Preferably, in order to adapt to wider fuel type, and still need guarantee steady operation, can regulate the dimensional structure of guide ring and smooth combustion apparatus, satisfy certain mixture velocity, make combustion flame stable and do not affect the burner operation life-span.
Preferably, for the higher igniter fuel gas of calorific value, can adopt the distribution mode, pass into inert gas from the protection gas circuit, with suitable reduction igniter fuel gas calorific value, thereby reduce ignition temperature with the protection fire rod.
Burner of the present utility model has the following advantages it and characteristics owing to adopting above technical scheme:
1. the warm of will lighting a fire and go into operation is integrated in one, and realizes multifunctional working, and is fit to use without the type of furnace or the process burner of structure;
2. this burner is to gaseous fuel kind wide adaptability, and is wider to the gas heating value area requirement;
3. adopt the center fire mode, channel exit arranges guide ring, smooth combustion apparatus and swirl-flow devices etc., and reliability and the flame holding that goes into operation can guarantee to light a fire; And/or
4. the introducing of protection gas, make the burner internal and external pressure balance, do not have high temperature gases recirculating to burner channel, guaranteed the service life of burner and fire rod, and flame location and shape are also had certain regulating power;
Description of drawings
Fig. 1 is the cutaway view of the agent structure of burner of the present utility model;
Reference numerals list:
Wherein, 1. high energy ignition unit, the 2. import of igniter fuel gas, 3. fire rod, 4. fuel gas import, 5. igniter fuel gas passage, 6. igniting oxidant channel, 7. mounting flange go into operation, 8. guide ring, 9. swirl-flow devices, 10. smooth combustion apparatus, 11. central tube, 12. inner layer pipe, 13. middle tube, 14. outer tube, the 15. fuel gas passages that go into operation, 16. oxidant channels that go into operation, the oxidant inlet 17. go into operation, 18. igniting oxidant inlets, 19. seal cover boards.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and embodiments.
Referring to Fig. 1, gasifier to start working preheat burner take fuel gas as fuel of the present utility model, comprise fire rod 3, central tube 11, inner layer pipe 12, middle tube 13 and the outer tube 14 of coaxial arrangement from the inside to the outside, consist of the agent structure of gasifier to start working preheat burner.And burner is sealedly connected and fixed by mounting flange 7 and body of heater or process burner (Fig. 1 is not shown).And the pipeline of burner inside connects and completes by seal cover board 19 welding, also can adopt the flange connection of sealing to realize, every part not only can be dismantled separately and keep in repair, and can not exert an influence to other parts.
Described fire rod 3 and central tube 11 have consisted of igniter fuel gas passage 5, fire rod 3 is arranged in the center of central tube 11, and the exit of igniter fuel gas passage 5 is provided with guide ring 8, has both guaranteed the uniform ejection of fuel gas and certain spout flow velocity, the fixing point lighted torch 3 again, make itself and central tube concentric.
Igniter fuel gas is connected with igniter fuel gas passage 5 by igniter fuel gas import 2 with protection gas and after connecing, and two kinds of gases switch by valve.
Described central tube 11 and inner layer pipe 12 be coaxial has consisted of igniting oxidant channel 6, and inner layer pipe 12 heads are connected with smooth combustion apparatus 10, and the igniting oxidant enters igniting oxidant channel 6 by igniting oxidant inlet 18.
Described fire rod 3 and central tube 11 be in inner layer pipe 12 inside, in the gasifier to start working process, by this structural defence fire rod, avoid by the thermal-flame ablation.Utilize smooth combustion apparatus 10, formed the partial combustion chamber of igniter fuel gas in burner inside, flame front is inner at burner, and fire rod 3 stretches out a segment distance from central tube 11 inside, has consisted of premixed combustion, and burning velocity is accelerated.
Described inner layer pipe 12 and middle tube 13 be coaxial has consisted of the fuel gas passage 15 that goes into operation, and the fuel gas that goes into operation enters by the fuel gas import 4 that goes into operation the fuel gas passage 15 that goes into operation.
Described middle tube 13 and outer tube 14 be coaxial has consisted of the oxidant channel 16 that goes into operation, and the oxidant that goes into operation enters by the oxidant inlet 17 that goes into operation the oxidant channel 16 that goes into operation, and the exit of the oxidant channel 16 that goes into operation optionally arranges swirl-flow devices 9.
Described central tube 11, inner layer pipe 12, middle tube 13 and outer tube 14 all can be substituted by double-deck cooling jacket, greatly prolonging combustion device service life.
The described Way out that goes into operation fuel gas passage 15 and oxidant 16 passages that go into operation can change, and can adopt with 0 ~ 30 ° of burner axis angle and arrange.
The described exit position that goes into operation fuel gas passage 15 and the oxidant channel 16 that goes into operation can be in same plane.
Groundwork principle of the present utility model is as follows: igniter fuel gas and igniting oxidant (oxygen or air) mix lights the formation ignition flame by igniter, utilize ignition flame to light at combustor external go into operation fuel gas and the oxidant (oxygen or air) that goes into operation, utilization goes into operation flame to the gasification furnace load up that heats up, and finally reaches the coal condition of throwing.
main working process of the present utility model is as follows: under normal temperature and pressure, igniter fuel gas enters igniting fuel gas passage 5 by igniter fuel gas import 2, igniting oxidant (oxygen or air) enters igniting oxidant channel 6 by igniting oxidant inlet 18, lighted the formation ignition flame by high-octane igniter 1 after two strands of medium premixs in the combustion chamber, the recycling ignition flame is lighted two strands of media that enter from go into operation fuel gas import 4 and the oxidant inlet 17 that goes into operation respectively at combustor external, the final flame that goes into operation that forms, after the flame stabilization that goes into operation, close igniter fuel gas incoming flow valve, and open simultaneously and protect the gas imported valve, protection gas enters igniting fuel gas passage 5 by igniter fuel gas import 2, this moment, gasification furnace began the load up that boosts, finally make the interior temperature and pressure of stove satisfy the condition of firing coal-dust.
By the gasifier to start working preheat burner take fuel gas as fuel of the present utility model, overcome the deficiencies in the prior art, with fuel gas for the fuel that goes into operation, can complete independently the process of igniting, the preheating that goes into operation, not need to by or unite other burners.Wherein, fire rod is built in burner, avoids it by the thermal-flame ablation.Formed partial combustion chamber in igniter fuel gas and igniting oxidant mixed zone.Oxidant outlet place's employing swirl-flow devices goes into operation.This burner is the cell burner take fuel gas as fuel that is applicable to gasification furnace, and need not by or unite other burners, can complete independently igniting and the warm that goes into operation.And to gaseous fuel kind wide adaptability, wider to the gas heating value area requirement; Channel exit arranges smooth combustion apparatus, and reliability and the flame holding that goes into operation can guarantee to light a fire; In start-up process, displacement protection gas, make the burner internal and external pressure balance, do not have high temperature gases recirculating to burner channel, extended the service life of burner.By the appropriate design of structure, guaranteed the safe operation of fire rod, avoid ablated.And fuel mix is effective, organizes burning capacity strong, long service life, and compact conformation, flame is sturdy, and load regulation range is large.
Below combined most preferred embodiment of the present utility model burner of the present utility model has been made detailed description, yet those skilled the in art will appreciate that, in the situation that do not deviate from essence of the present utility model and scope, can carry out various modifications and variations to the utility model.Will be understood that most preferred embodiment of the present utility model is descriptive, but not determinate, scope of the present utility model should be determined according to appended independent claims.

Claims (7)

1. burner that is used for the preheating that goes into operation take fuel gas as fuel of gasification furnace, its center is disposed with central tube (11), inner layer pipe (12), middle tube (13) and outer tube (14) from the inside to the outside, and at central tube (11) insertion point, center lighted torch (3), space between fire rod (3) and each pipe has formed each medium channel, be respectively from the inside to the outside igniter fuel gas passage (5), the igniting oxidant channel (6), fuel gas passage (15) and the oxidant channel that goes into operation (16) go into operation; It is characterized in that: central tube (11) and fire rod (3) are arranged in inner layer pipe (12) inside, and inner layer pipe (12) is connecting smooth combustion apparatus (10); The position of fire rod (3) has been avoided by the thermal-flame ablation; Smooth combustion apparatus (10) has formed the partial combustion chamber of igniter fuel gas, makes the ignition flame trouble-free burning, guarantees successfully to light the fuel gas that goes into operation.
2. the burner of the preheating that goes into operation according to claim 1 wherein is provided with swirl-flow devices (9) in the described oxidant channel that goes into operation (16) exit.
3. the burner of the preheating that goes into operation according to claim 1 wherein is provided with guide ring (8) in described igniter fuel gas passage (5) exit, and it is connecting fire rod (3) and central tube (11), and make the igniter fuel agent evenly, ejection post.
4. the burner of the preheating that goes into operation according to claim 1, among wherein said central tube, inner layer pipe, middle tube and outer tube, at least one can be substituted by double-deck cooling jacket.
5. the burner of the preheating that goes into operation according to claim 1, be connected and fixed by welded seal cover plate (19) or flange respectively between wherein said central tube (11), inner layer pipe (12), middle tube (13) and outer tube (14) independently.
6. the burner of the preheating that goes into operation according to claim 1, the Way out of wherein said go into operation fuel gas passage and the oxidant channel that goes into operation can become 0 ~ 30 ° with the burner axis angle
7. the burner of the preheating that goes into operation according to claim 1; wherein be connected with igniter fuel gas passage (5) with protection gas and after connecing at igniter fuel gas; two kinds of gases switch by valve; switch protecting gas after the fuel gas that stops lighting a fire; passing into of gas of protection both protected fire rod (3); also make the burner internal and external pressure balance, prevent that thermal current is back to burner inside.
CN 201220609607 2012-11-16 2012-11-16 Gasification furnace burner Ceased CN202938299U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220609607 CN202938299U (en) 2012-11-16 2012-11-16 Gasification furnace burner

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Application Number Priority Date Filing Date Title
CN 201220609607 CN202938299U (en) 2012-11-16 2012-11-16 Gasification furnace burner

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ID=48322536

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Application Number Title Priority Date Filing Date
CN 201220609607 Ceased CN202938299U (en) 2012-11-16 2012-11-16 Gasification furnace burner

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103672888A (en) * 2013-09-16 2014-03-26 北京神雾环境能源科技集团股份有限公司 Ignition burner
CN103822208A (en) * 2012-11-16 2014-05-28 航天长征化学工程股份有限公司 Burner of gasification furnace
CN103912872A (en) * 2014-03-21 2014-07-09 中国科学院过程工程研究所 Pulverized coal burner with spout air-cooling structures
CN108728168A (en) * 2017-04-14 2018-11-02 航天长征化学工程股份有限公司 Gasification burner

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103822208A (en) * 2012-11-16 2014-05-28 航天长征化学工程股份有限公司 Burner of gasification furnace
CN103672888A (en) * 2013-09-16 2014-03-26 北京神雾环境能源科技集团股份有限公司 Ignition burner
CN103672888B (en) * 2013-09-16 2016-06-22 北京神雾环境能源科技集团股份有限公司 Igniter burner
CN103912872A (en) * 2014-03-21 2014-07-09 中国科学院过程工程研究所 Pulverized coal burner with spout air-cooling structures
CN108728168A (en) * 2017-04-14 2018-11-02 航天长征化学工程股份有限公司 Gasification burner

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