CN105972595A - Combustor - Google Patents
Combustor Download PDFInfo
- Publication number
- CN105972595A CN105972595A CN201610484936.5A CN201610484936A CN105972595A CN 105972595 A CN105972595 A CN 105972595A CN 201610484936 A CN201610484936 A CN 201610484936A CN 105972595 A CN105972595 A CN 105972595A
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- CN
- China
- Prior art keywords
- combustion air
- burner
- runner
- flow
- grades
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
-
- 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
- F23D14/60—Devices for simultaneous control of gas and combustion air
-
- 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
Abstract
The invention discloses a combustor which a combustion chamber, a premixing chamber and a plurality of air supply channels, wherein the premixing chamber is located at the front end of the combustion chamber; a combustor throat is formed between the premixing chamber and the combustion chamber; the air supply channels form a coaxial arrangement and are located at the front end of the premixing chamber; the air supply channels include a primary combustion-supporting air channel, a secondary combustion-supporting air channel and at least one combustible gas channel used for supplying combustible gas; the primary combustion-supporting air channel is located at the center of the coaxial arrangement; and an outlet of the secondary combustion-supporting air channel is located in the premixing chamber. The combustor adopts two-stage air distribution, has high operational flexibility and is adapted to stable operation under various working conditions.
Description
Technical field
Present invention relates in general toBurner, more particularly to reacting furnace sour gas in a kind of sulfur recovery facilityBurner。
Background technology
There are many sulfur recovery facilities at oil and chemical field, pass throughBurnerCombustion acid gas carries out the method for thermal response, reaches recovery of sulfur, the purpose of protection environment.Wherein sour gas passes throughBurnerThe effect of combustion reaction in reacting furnace, directly affects the recovery of sulfur efficiency of whole sulfur recovery system.
Conventional exterior mixingBurnerSour gas from air gun shower nozzle spray after mix with combustion air while burn in fire trough.This kind of formBurnerSimple to operate, flameholding in low-load conditions, it is difficult to tempering.But, exterior mixingBurnerIn, mixing intensity is low, and incorporation time is long, and sour gas and combustion air begin to burning in the case of not being sufficiently mixed, combustion intensity is low, combustion flame is long, moves, under same size of burner hearth (economical size) after causing burner hearth high-temperature region, high-temperature flue gas is short in the burner hearth time of staying, response time is short, reacts insufficient, the final sulphur recovery efficiency affecting whole sulfur recovery system.
Conventional premixed sour gasBurner, after sour gas first mixes with combustion air, then spraying into fire trough and burn, mixing intensity is high, and incorporation time is short, and flame is very brief, and thoroughly, under same size of burner hearth, flue gas stops and the response time is longer in burning, and fully, sulphur recovery efficiency is high in reaction.But this kind of formBurnerWhen running on the lower load, easily it is tempered, willBurnerAditus laryngis and rifle headPortion of portionPart burns, thereforeBurnerOperating flexibility little, low-load operation difficulty.
Summary of the invention
It is an object of the invention to provide a kind of two level air-distributionsBurner, its air distribution mode allowing to be adjusted combustion air according to the change of practical operation operating mode (payload), thus overcome the problems referred to above of the prior art.
According to the present invention, it is provided that a kind ofBurner, comprising: combustor；Premixer, described premixer is positioned at described chamber front end, and is formed between described premixer and combustorBurnerAditus laryngis；And it is multiple for flow channel, the plurality of confession flow channel is formed coaxially arranged, and it is positioned at the front end of described mixing chamber, wherein said multiple confession flow channel includes: one-level combustion air runner, two grades of combustion air runners and at least one fuel gas runner being used for supplying fuel gas, wherein, described one-level combustion air runner is positioned at described coaxially arranged center, and the outlet of described two grades of combustion air runners is positioned at described premixer.
Preferably, the smallest cross-section area of described one-level combustion air runner is less than the 30% of the smallest cross-section area of two grades of combustion air runners, more preferably can be less than the 15% of the latter.
In one embodiment, the outlet of described one-level combustion air runner is positioned at described premixer.In another embodiment, the outlet of described one-level combustion air runner is positioned at describedBurnerAt aditus laryngis.
Preferably, described two grades of combustion air runners are positioned at described coaxially arranged outermost layer.
Described fuel gas runner can include fuel gas flow passage between described firsts and seconds combustion air runner.
In certain embodiments, described combustible gas runner can also include the sour gas runner between described firsts and seconds combustion air runner.Preferably, described sour gas runner is positioned at the outside of described fuel gas flow passage.
Preferably,BurnerCan also include: for controlling the first valve of the opening and closing of described one-level combustion air runner；For controlling the second valve of the opening and closing of described two grades of combustion air runners；And controller, this controller receives the signal indicating the flow in described sour gas runner, and controls described first valve and the second valve based on this signal.
Preferably, described controller is configured to: when in described sour gas runner flow is flow at full capacity less than 25% time, control described first valve and open described one-level combustion air runner, and control two grades of combustion air runners described in described second valve closing.
Preferably, described controller is further configured for: when in described sour gas runner flow is flow at full capacity more than 25% time, control described first valve and open described one-level combustion air runner, and control described second valve and progressively open described two grades of combustion air runners；When in described sour gas runner flow is flow at full capacity more than 75% time, fully open described two grades of combustion air runners.
According to embodiments of the present invention, use two level air-distributions,BurnerOperating flexibility is big, adapts to the stable operation under various operating mode.
Accompanying drawing explanation
By reading with reference to followingAccompanying drawing instituteThe detailed description that non-limiting example is made made, thisInventionOther features, objects and advantages will become more apparent upon:
Figure 1It is according to a first embodiment of the present inventionBurnerStructural representationFigure；
Figure 2According to first embodimentBurnerThe cross section of multiple fluid passagesFigure；
Figure 3It is according to a second embodiment of the present inventionBurnerStructural representationFigure。
Detailed description of the invention
Below in conjunction withAccompanying drawingWith embodiment, the application is described in further detail.It is understood that specific embodiment described herein is used only for explaining related invention, rather than the restriction to this invention.It also should be noted that, for the ease of describing,In accompanying drawingIllustrate only and invent relevant part.
It should be noted that in the case of not conflicting, the embodiment in the application and the feature in embodiment can be mutually combined.Below with reference toAccompanying drawingAnd describe the application in detail in conjunction with the embodiments.
First combineFigure 1WithFigure 2Introduce according to a first embodiment of the present inventionBurner100。
Figure 1It isBurnerThe structural representation of 100Figure；Figure 2It isBurnerThe cross section of multiple fluid passages of 100Figure。
As Figure 1Shown in,Burner100 include: combustor 10, be positioned at the premixer 20 of combustor 10 front end and be positioned at the multiple for flow channels 30 of front end, premixer 20.Formed between premixer 20 and combustor 10BurnerAditus laryngis 10a.Multiple confession flow channels 30 are formed coaxially arranged.
As Figure 1Shown in, in the present embodiment, the plurality of one-level combustion air runner 31, fuel gas flow passage 32, sour gas runner 33 and the two grades of combustion air runners 34 including for flow channel 30 being from inside to outside sequentially arranged.One-level combustion air runner 31 is positioned at described coaxially arranged center.Figure 2Cross sectionFigureMore clearly from show multiple above-mentioned layout for flow channel.
According to embodiments of the present invention, when design, one-level combustion air runner circulation differs certain proportion with two grades of combustion air runner circulatioies, and one-level combustion air circulation is little.Preferably, the circulation of one-level combustion air runner 31 is designed as the circulation significantly less than two grades of combustion air runners 34.Preferably, the smallest cross-section area of described one-level combustion air runner less than two grades of combustion air runners smallest cross-section area 30%, even more preferably less than 15%.
In the present embodiment,Such as figure 1Shown in, the outlet 31a of one-level combustion air the runner 31 and outlet 34a of two grades of combustion air runners 34 is respectively positioned in premixer 20.
Burner100 can include the first and second valve (not shown) being respectively used to control the opening and closing of one-level combustion air runner 31 and two grades of combustion air runners 34.
The Main Function of fuel gas flow passage 32 is to provide fuel gas at the initial stage that goes into operation, and is used for improving combustion furnace bore temperature.When fire box temperature reaches a timing, it is passed through sour gas, closes fuel gas.
WhenBurnerDuring 100 large load operation, such as, when more than 25% that the flow in sour gas runner 33 is flow at full capacity, the flow-rate ratio needing combustion air is bigger.At this point it is possible to progressively opened by two grades of combustion air runners 34, it is ensured that the required combustion air of sour gas burning, form premix combustion, it is ensured that combustion efficiency.Preferably, when in described sour gas runner 33 flow is flow at full capacity more than 75% time, by fully open for I and II combustion air runner 31,34, improve combustion efficiency.
It will be seen that according to the present embodiment,Burner100 when large load operation, and especially when nominal situation (design load) runs, two grades of combustion airs and sour gas 20 carry out strength and mix in premixer, then fromBurnerAditus laryngis 10a ejection is burnt.The premix combustion that this mode is used, sour gas is high with combustion air mixing intensity, and incorporation time is short, and flame is very brief, thoroughly, under same size of burner hearth, flue gas stops and the response time is long in burning, fully, sulphur recovery utilization ratio is high in reaction, burns ammonia good impurity removing effect.
WhenBurnerWhen 100 Smaller load run, the flow of the combustion air of needs greatly reduces.At this point it is possible to two grades of combustion air runner 34 flows are turned down, it is even switched off, and opens one-level combustion air runner 31.Such as when less than 25% that the flow in sour gas runner 33 is flow at full capacity, can only open one-level combustion air runner 31.
It will be seen thatBurnerWhen Smaller load runs, the flow when flow of sour gas and combustion air compares design load is little a lot.According to traditional premixed structure, itsBurnerThe flow velocity at the place of aditus laryngis is the lowest, is very easy to occur tempering to cause during burningBurner100 heads burn out.But, the present invention'sBurner100 when Smaller load runs, and can turn down and be even switched off two grades of combustion air runners 34, opens one-level combustion air runner 31.Owing to one-level combustion air runner 31 is centrally-disposed so that the flow design of its runner can be less, so that combustion air existsBurnerHigher flow velocity can be kept at aditus laryngis 10a, and the sour gas that flow velocity about is slower is produced negative-pressure ejecting effect.This causesBurnerSour gas at aditus laryngis 10a maintains rational flow velocity with the gaseous mixture of combustion air, thus ensures that flame is upright and outspoken effectively, is not tempered, well solves premixedBurnerSmaller load runs and is easily tempered this difficult problem.
In general,Burner100 use two level air-distributions, and operating flexibility is big, adapts to the stable operation under various operating mode.
Preferably,Burner100 can also include controller (In figureNot shown), this controller is it is so structured that the signal of flow that receives in instruction sour gas runner 33, and controls above-mentioned for one-level combustion air runner 31 and the first valve of two grades of combustion air runners 34 with the second valve based on this signal.
Referring toFigure 3Introduce according to a second embodiment of the present inventionBurner200。
Burner200 with according to first embodimentBurner100 have essentially identical configuration, and difference is:BurnerThe outlet of the one-level combustion air runner 31 of 200 is not located in premixer, and is inBurnerAt aditus laryngis 10a.
According to the present embodiment, whenBurnerDuring 200 large load operation, such as when more than 25% that the flow in sour gas runner 33 is flow at full capacity, two grades of combustion air runners 34 can be opened, form premix combustion, it is ensured that combustion efficiency.Preferably, when in described sour gas runner 33 flow is flow at full capacity more than 75% time, by fully open for I and II combustion air runner 31,34, improve combustion efficiency.
WhenBurnerWhen 200 Smaller load run, two grades of combustion air runner 34 flows can be turned down, be even switched off, and open one-level combustion air runner 31.Such as when less than 25% that the flow in sour gas runner 33 is flow at full capacity, can only open one-level combustion air runner 31.
According to the present embodiment, due toBurnerThe outlet 31a of the one-level combustion air runner 31 of 200 is positioned atBurnerAditus laryngis 10a, so sour gas is passing throughBurnerAfter aditus laryngis 10a, ability is met with the combustion air of one-level combustion air runner 31.When only opening one-level combustion air runner 31, sour gas and combustion air burn on combustor 10 inner edge mixing limit, form exterior mixing burning.Moreover, centrally-disposed due to one-level combustion air runner 31 so that the flow design of its runner can be less, thus combustion air existsBurnerHigher flow velocity can be kept at aditus laryngis 10a, and the sour gas that flow velocity about is slower is produced negative-pressure ejecting effect.This causesBurnerSour gas at aditus laryngis 10a maintains rational flow velocity with the gaseous mixture of combustion air, thus ensures that flame is upright and outspoken effectively, is not tempered.Therefore,Burner200 flameholdings in low-load conditions, are difficult to tempering, solve wellBurnerSmaller load runs and is easily tempered this difficult problem.
When only opening two grades of combustion air runners 34, two grades of combustion airs carry out strength in premixer and mix with sour gas, form premix combustion.In this case, sour gas is high with combustion air mixing intensity, and incorporation time is short, and flame is very brief, and burning is thoroughly.
When opening one-level combustion air runner 31 and two grades of combustion air runners 34 simultaneously, combustion air and sour gas from two grades of combustion air runners 34 premix in premixer 20, form premixed combustion；Meanwhile, the combustion air from one-level combustion air runner 31 mixes while burn with sour gas in combustor 10, forms exterior mixing burning, thus generally forms the hybrid burning of premix and outer mixed combination.
It will be seen thatBurner200 use two level air-distributions, and operating flexibility is big, adapts to the stable operation under various operating mode.
It should be noted that, although in above example, fuel gas flow passage 32, sour gas runner 33, the distinguished and admirable road of secondary combustion-supporting 34 are from inside to outside arranged according to this order, but the present invention is not limited to this, but can apply to above-mentioned runner and have arrangement relation inside and outside differenceBurner.The inside and outside layout of different runner such as can be changed according to the relativeness of uninterrupted in each runner.Such as, the runner with maximum stream flow can be arranged in diameter maximum outermost layer.
Further, it should be noted that although above in association with sour gasBurnerDescribe embodiments of the invention, but the present invention is also not limited to sour gasBurner.The graduation two wind structure (one-level combustion air runner and two grades of combustion air flow passage structures) of the present invention can apply to otherBurner, realize in the way of similar to above-described embodimentBurnerStable burning under different operating modes, it is to avoid premixedBurnerTempering problem under low operating mode.Such as, present invention could apply to suchBurner:BurnerMultiple air supply channels in addition to firsts and seconds combustion air runner, only include that other runners are (such as waste gasBurnerIn waste gas runner, or air stoveBurnerIn fuel gas flow passage).
Above description is only the preferred embodiment of the application and the explanation to institute's application technology principle.Skilled artisan would appreciate that, invention scope involved in the application, it is not limited to the technical scheme of the particular combination of above-mentioned technical characteristic, also should contain in the case of without departing from described inventive concept, other technical scheme being carried out combination in any by above-mentioned technical characteristic or its equivalent feature and being formed simultaneously.Such as features described above and (but not limited to) disclosed herein have the technical characteristic of similar functions and replace mutually and the technical scheme that formed.
Claims (11)
1. a burner, including:
Combustor；
Premixer, described premixer is positioned at described chamber front end, and described premixer with
Burner throat is formed between combustor；And
Multiple confession flow channels, the plurality of confession flow channel is formed coaxially arranged, and is positioned at described mixed
Close the front end of room,
Wherein, the plurality of include for flow channel: one-level combustion air runner, two grades combustion-supporting distinguished and admirable
Road and at least one fuel gas runner being used for supplying fuel gas, wherein, described one
Level combustion air runner is positioned at described coaxially arranged center, the outlet of described two grades of combustion air runners
It is positioned at described premixer.
Burner the most according to claim 1, wherein, described one-level combustion air runner
Smallest cross-section area is less than the 30% of the smallest cross-section area of two grades of combustion air runners.
Burner the most according to claim 1, wherein, going out of described one-level combustion air runner
Mouth is positioned at described premixer.
Burner the most according to claim 1, wherein, going out of described one-level combustion air runner
Mouth is positioned at described burner throat.
5. the burner as according to any one of claim 1-4, wherein, described two grades combustion-supporting
Distinguished and admirable road is positioned at described coaxially arranged outermost layer.
6. the burner as according to any one of claim 1-4, wherein, described fuel gas
Runner includes fuel gas flow passage between described firsts and seconds combustion air runner.
7. burner as claimed in claim 6, wherein, described combustible gas runner also includes position
Sour gas runner between described firsts and seconds combustion air runner.
8. burner as claimed in claim 7, wherein, described sour gas runner is positioned at described
The outside of fuel gas flow passage.
9. burner as claimed in claim 7, also includes:
For controlling the first valve of the opening and closing of described one-level combustion air runner；
For controlling the second valve of the opening and closing of described two grades of combustion air runners；With
Controller, this controller receives the signal indicating the flow in described sour gas runner, and
Described first valve and the second valve is controlled based on this signal.
10. burner as claimed in claim 9, wherein, described controller is configured to: when
In described sour gas runner flow is flow at full capacity less than 25% time, control described first
Valve opens described one-level combustion air runner, and controls described in described second valve closing two grades and help
Fire distinguished and admirable road.
11. burners as claimed in claim 10, wherein, described controller constructs further
For: when in described sour gas runner flow is flow at full capacity more than 25% time, control institute
State the first valve and open described one-level combustion air runner, and control described second valve and progressively open
Described two grades of combustion air runners；When the flow in described sour gas runner is flow at full capacity
When more than 75%, fully open described two grades of combustion air runners.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610484936.5A CN105972595B (en) | 2016-06-24 | 2016-06-24 | Burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610484936.5A CN105972595B (en) | 2016-06-24 | 2016-06-24 | Burner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105972595A true CN105972595A (en) | 2016-09-28 |
| CN105972595B CN105972595B (en) | 2018-11-06 |
Family
ID=57020214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610484936.5A Active CN105972595B (en) | 2016-06-24 | 2016-06-24 | Burner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105972595B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113697774A (en) * | 2021-09-17 | 2021-11-26 | 洛阳瑞昌环境工程有限公司 | Ultra-low load sulfur recovery system and process |
| CN114426262A (en) * | 2020-10-14 | 2022-05-03 | 中国石油化工股份有限公司 | Burner for recovering sulfur |
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| CN102141247A (en) * | 2011-04-13 | 2011-08-03 | 中冶京诚工程技术有限公司 | Flame adjusting burner of soaking pit furnace |
| CN203240580U (en) * | 2013-05-03 | 2013-10-16 | 武汉金中海高新科技有限公司 | Burner capable of adjusting flames |
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| CN203869039U (en) * | 2014-03-18 | 2014-10-08 | 徐州能达燃烧控制工程有限公司 | Three-level air distribution gas burner |
| CN104776434A (en) * | 2015-04-27 | 2015-07-15 | 淄博万方窑炉工程有限责任公司 | Nozzle for blast furnace gas oven |
| CN204478046U (en) * | 2015-02-28 | 2015-07-15 | 洛阳明远石化技术有限公司 | A kind of burner |
| CN205807414U (en) * | 2016-06-24 | 2016-12-14 | 洛阳明远石化技术有限公司 | Burner |
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2016
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102141247A (en) * | 2011-04-13 | 2011-08-03 | 中冶京诚工程技术有限公司 | Flame adjusting burner of soaking pit furnace |
| CN203240580U (en) * | 2013-05-03 | 2013-10-16 | 武汉金中海高新科技有限公司 | Burner capable of adjusting flames |
| CN103398379A (en) * | 2013-07-24 | 2013-11-20 | 中冶华天工程技术有限公司 | Oxygen-enriched burner |
| CN203869039U (en) * | 2014-03-18 | 2014-10-08 | 徐州能达燃烧控制工程有限公司 | Three-level air distribution gas burner |
| CN204478046U (en) * | 2015-02-28 | 2015-07-15 | 洛阳明远石化技术有限公司 | A kind of burner |
| CN104776434A (en) * | 2015-04-27 | 2015-07-15 | 淄博万方窑炉工程有限责任公司 | Nozzle for blast furnace gas oven |
| CN205807414U (en) * | 2016-06-24 | 2016-12-14 | 洛阳明远石化技术有限公司 | Burner |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114426262A (en) * | 2020-10-14 | 2022-05-03 | 中国石油化工股份有限公司 | Burner for recovering sulfur |
| CN113697774A (en) * | 2021-09-17 | 2021-11-26 | 洛阳瑞昌环境工程有限公司 | Ultra-low load sulfur recovery system and process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105972595B (en) | 2018-11-06 |
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