CN203346349U - Process burning nozzle of high-strength gasification furnace - Google Patents
Process burning nozzle of high-strength gasification furnace Download PDFInfo
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- CN203346349U CN203346349U CN 201320304345 CN201320304345U CN203346349U CN 203346349 U CN203346349 U CN 203346349U CN 201320304345 CN201320304345 CN 201320304345 CN 201320304345 U CN201320304345 U CN 201320304345U CN 203346349 U CN203346349 U CN 203346349U
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- oxygen
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- coal slurry
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- cooling water
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Abstract
The utility model relates to a burning nozzle, in particular to a process burning nozzle of a high-strength gasification furnace, and mainly solves the technical problems that an outlet of a central oxygen pipe of the burning nozzle is in the form of a straight pipe, so that the central oxygen jetting speed is slower and the premixing efficiency of coal slurry and oxygen is lower; and a jacket type cooling pipe is adopted, so that the cooling effect is poorer in the prior art. The process burning nozzle comprises an outer pipe, wherein one end of the outer pipe is connected with a nozzle mechanism through a flange; the nozzle mechanism is wound with a cooling water coil pipe; the nozzle mechanism comprises a primary oxygen jetting nozzle; a coal slurry nozzle is formed in the primary oxygen jetting nozzle; a secondary oxygen jetting nozzle is formed in the coal slurry nozzle; the end surface of the secondary oxygen jetting nozzle has a certain contraction amount from the reference surface of the end surface of the burning nozzle; the end parts of the primary oxygen jetting nozzle, the coal slurry nozzle and the secondary oxygen jetting nozzle are all in the form of a contraction hole; and the primary oxygen jetting nozzle, the coal slurry nozzle and the secondary oxygen jetting nozzle are communicated with a primary oxygen inlet, a coal slurry inlet and a secondary oxygen inlet through a pipeline mechanism respectively.
Description
Technical field
The utility model relates to a kind of burner, especially relates to a kind of high strength vapourizing furnace process burner.
Background technology
Process burner structure formation one is removed as, concentric three runners, and two runners, have outer oxygen pipe, coal slurry pipe, central oxygen pipe and water-cooled tube.Chinese patent discloses a kind of coal water slurry burner, and (publication number: CN103013574 A), it comprises fuel gas pipe, has the fuel gas passage in fuel gas pipe, in the fuel gas passage, is provided with ignition mechanism; The first oxygen hose, the first oxygen hose is set in the outside of fuel gas pipe to limit the first oxygen channel of annular between the first oxygen hose and fuel gas pipe; Water-coal slurry pipe, water-coal slurry pipe is set in the outside of the first oxygen hose to limit annular coal water slurry passage between water-coal slurry pipe and the first oxygen hose; The second oxygen hose, the second oxygen hose is set in the outside of water-coal slurry pipe to limit the second oxygen channel of annular between the second oxygen hose and water-coal slurry pipe; And cooling tube, cooling tube is set in the outside of the second oxygen hose between cooling tube and the second oxygen hose, to limit annular cooling channel; The lower end of cooling tube is connected with the lower end of the second oxygen hose with under the sealing cooling channel; Be provided with isolated tube between cooling tube and the second oxygen hose, isolated tube is isolated into annular water entry and annular water exit by cooling channel, and water exit is communicated with the lower end of water entry; The outside wall surface inboard and the second oxygen hose that water entry is positioned at water exit is provided with a plurality of radiating pieces for heat radiation; Also comprise closure member, the lower end of cooling tube is connected with closure member respectively with the lower end of the second oxygen hose; The lower surface of coal water slurry passage extends beyond lower surface first predetermined distance of fuel gas passage and the first oxygen channel downwards; The lower surface of the first oxygen channel extends beyond lower surface second predetermined distance of fuel gas passage downwards, and the lower surface of the second oxygen channel extends beyond lower surface the 3rd predetermined distance of coal water slurry passage downwards, and the second and the 3rd predetermined distance is less than the first predetermined distance.But the outlet of the central oxygen pipe of this burner is straight pipe type, and while spraying central oxygen like this, speed is slower, the premix efficiency of coal slurry and oxygen is lower, and adopts the cooling tube of jacketed type to make cooling performance poor.
The utility model content
The utility model is to provide a kind of high strength vapourizing furnace process burner, it is mainly that the outlet of the central oxygen pipe of the existing burner of solution prior art is straight pipe type, while spraying central oxygen like this, speed is slower, the premix efficiency of coal slurry and oxygen is lower, and adopts the cooling tube of jacketed type to make poor etc. the technical problem of cooling performance.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals:
A kind of high strength vapourizing furnace process burner of the present utility model, comprise outer tube, described outer tube one end is connected with nozzle mechanism by flange, nozzle mechanism is outer has cooling water coil around volume, nozzle mechanism includes and once sprays the oxygen mouth, once spray in the oxygen mouth and be provided with the coal slurry nozzle, once spray between oxygen mouth and coal slurry nozzle and be provided with the gap that can allow oxygen pass through, be provided with secondary spray oxygen mouth in the coal slurry nozzle, be provided with the gap that can allow coal slurry pass through between coal slurry nozzle and secondary spray oxygen mouth, be provided with the passage that can allow oxygen pass through in secondary spray oxygen mouth, secondary spray oxygen mouth tip-to-face distance burner end standard face has certain retraction amount, once spray the oxygen mouth, the coal slurry nozzle, the end of secondary spray oxygen mouth is all the reducing type, once spray the oxygen mouth, the coal slurry nozzle, secondary spray oxygen mouth is communicated with the oxygen entrance one time by pipeline mechanism respectively, the coal slurry entrance, secondary oxygen entrance, the 15-30% that the spray oxygen amount of secondary spray oxygen mouth is total spray oxygen amount, all the other are the spray oxygen amount of once spraying the oxygen mouth.
The purpose of cooling water coil is set, and is to change for the protection burner partly is difficult for producing brilliant picture in high-temperature gas.
The outlet of burner central oxygen pipe is designed to the reducing form, and purpose is accelerated central oxygen, and its tip-to-face distance burner end standard face, have certain retraction amount simultaneously.Form the pre-confounding of a coal water slurry and central oxygen, the outlet pipe of coal water slurry also is designed to the reducing form, the coal water slurry that makes to enter pre-confounding possesses certain pressure, in pre-confounding, improve rheological property, the effect of coal water slurry, guarantee the atomizing effect of coal water slurry after leaving burner.No matter be central oxygen, or the circulation area of coal water slurry and outer oxygen, all need to meet the traffic requirement of medium separately, in the situation that supply pressure allows, strive the mixing and the atomizing effect that reach necessary.
But the ratio of central oxygen will have certain restricted condition, be generally 20%, 25% of total oxygen demand, all the other are all as outer oxygen.The central oxygen amount can not be too little, not so do not reach dilution and booster action to coal slurry.The central oxygen amount can not be too large, too conference increases too much the mixture velocity in pre-mixing district, cause the wear pattern in pipe core exit to worsen. and unstable, the continuous work-ing life of reducing burner, and this point affects the burner main factor in work-ing life just.On the other hand, when the central oxygen amount increases, must make the axial velocity amount of burner outlet material increase, radial velocity component reduces, its result makes the flame profile of whole burner outlet become elongated, can't mate with the inner profile of vapourizing furnace, cause the residence time of larger-diameter pulverized coal particle in vapourizing furnace to shorten, carbon content in slag increases, cause the reduction of gasification efficiency, and can make flame fling furnace bottom, damage the cone brick, causing that chilling ring crosses cause thermal damage and reduce normal operation, can also cause. the vibration of rising villous themeda decline villous themeda damages.
As preferably, describedly once spray the inwall of oxygen mouth and the angle α of vertical plane is 45-55 °, the angle β of the inwall of coal slurry nozzle and vertical plane, the outer wall of secondary spray oxygen mouth and the angle of vertical plane are all 65-75 °.The reducing ratio of the outer oxygen mouth of pipe is larger, and purpose is the oxygen gas flow rate improved, and carries out good atomization for the coal water slurry mixture by pre-confounding, in order to reach good atomizing effect in vapourizing furnace.
As preferably, described cooling water coil is made by the Inconel600 high temperature material.The material that the material of cooling water coil should select Inconel600 to have stable high-temperature performance, the Inconel600 alloy is nickel-chromium-iron-based solid solution strengthened alloy, there is good high-temperature corrosion resistance and antioxidant property, good cold and hot working and welding property, there is satisfied heat resistance and high plasticity below 700 ℃.Alloy can be strengthened by cold working, also can use resistance welding, molten weldering or brazing, and suitable for making is at the anti-oxidant part that bears low load below 1100 ℃.Cooling water coil, in bending process, be controlled the speed of bending well, controls deflection and the attenuate amount of tubing, guarantees integral body, strength and stiffness after the coil pipe moulding.
As preferably, described coal slurry nozzle is made by GH188 or UMCo-50 high-abrasive material.Therefore in order to increase the antiwear property of slurry spray head, select abrasion resistance, GH188 or UMCo-50 that antioxidant property is good.
As preferably, the outside surface of described coal slurry nozzle is coated with ceramic layer.Another damage type in process burner of water-coal-slurry gasification furnace continuous work-ing life is the footpath radiotropism crackle of outer shower nozzle end face and the formation of irregular be full of cracks.After burner normally moves for some time, the edge of outer oxygen nozzle oral area. there will be footpath radiotropism crackle and irregular be full of cracks, thermal shock effect.Due to the end face of outer oxygen nozzle, at furnace high-temperature gas, 1200 ~ 1500 ℃, metallic substance long term operation under such hot conditions, will make it to smelting and forging process, also has higher oxygen gas concentration will form irregular be full of cracks like this.Because the oxygen concentration at outer oxygen nozzle place is higher, oxidizing reaction, in the well-oxygenated environment of high temperature, can occur in metallic substance.Under high-temperature condition, certain carburizing effect also can occur in metallic substance, and the composition of metallic substance and performance are changed.The sulphur contained in coal, also can make metallic surface that high-temperature sulfidation attack occurs.The crackle of footpath radiotropism oral area, under hot conditions, the release that is stress is also the principal element that outer oxygen nozzle damages.There is higher jet in the exit of process burner, is also the highest zone of high-temperature gas return velocity, constantly the washing away of the high-temperature gas that the end face of outer oxygen nozzle is subject to containing solid coal powder particle, the factor damaged.Therefore adopt ceramic layer can improve the hardened surface structure properties, guarantee surperficial smooth finish,, guarantee that the inner quality of material is even.
As preferably, form the pre-confounding of coal water slurry between described secondary spray oxygen mouth end face and burner end standard face, pre-confounding outlet mean flow rate is generally the 12-20 meter per second, the exit velocity of secondary spray oxygen mouth is generally the 150-180 meter per second, coal slurry jet exit flow velocity is generally the 2-4 meter per second, and the exit velocity that once sprays the oxygen mouth is generally the 160-200 meter per second.In order to make the fully gasification in vapourizing furnace of coal dust in coal water slurry, must utilize the oxygen of respective numbers to carry out atomization effectively to coal water slurry, coal water slurry atomizing droplet size. and atomizing gas flow, flow velocity, between relation.In order to reach good atomizing effect, the flow velocity of gas must reach certain numerical value.That is to say, the mixture in pre-confounding, flow velocity must reach certain value, contains a large amount of coal dust solid particulates in mixture, and this is the major cause that causes the slurry spray head inner wall abrasion.
As preferably, the temperature of cooling water in described cooling water coil is 160-200 ℃.If it is improper that the temperature of cooling water in cooling water coil is controlled, can cause the low temperature corrosion of coil surface, usually temperature of cooling water is controlled at more than 160 ℃ proper.
As preferably, described pipeline mechanism includes the first flange be connected with nozzle mechanism, the first flange is connected with the first threeway by outer tube, the first threeway connects respectively the oxygen entrance one time, the second flange, the second flange is connected with the second threeway by the coal slurry pipe, the coal slurry pipe extend in outer tube, the second threeway connects respectively the coal slurry entrance, three-flange, three-flange is connected with the 3rd threeway by inner tube, inner tube extend in the coal slurry pipe, the 3rd threeway is connecting secondary oxygen entrance respectively, the 4th flange, the two ends of cooling water coil are connected with cooling water outlet, cooling water inlet.
As preferably, the front end of a described oxygen entrance is provided with the water diversion disk that is communicated with cooling water coil, and the angle γ of this part that cooling water coil is connected with water diversion disk and horizontal plane is 10-20 °.
Therefore, the utlity model has the application of the advantages such as vapor pressure is high, gasification furnace structure is simple, production cost is low and slurry spray head abrasion resistance material, improve slurry spray head wear-resisting, effectively protected outer oxygen nozzle, simple and reasonable for structure.
The accompanying drawing explanation
Accompanying drawing 1 is a kind of structural representation of the present utility model;
Accompanying drawing 2 is that the A of Fig. 1 is to structural representation;
Component, position and numbering in figure: outer tube 1, water diversion disk 2, cooling water coil 3, once spray oxygen mouth 4, coal slurry nozzle 5, secondary spray oxygen mouth 6, oxygen entrance 7, coal slurry entrance 8, secondary oxygen entrance 9, the first flange 10, the second flange 11, the first threeway 12, coal slurry pipe 13, the second threeway 14, three-flange 15, inner tube 16, the 3rd threeway 17, the 4th flange 18, cooling water inlet 19, cooling water outlet 20.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment: a kind of high strength vapourizing furnace process burner of this example, Fig. 3 as shown in Figure 1, Figure 2,, comprise outer tube 1, outer tube one end is connected with nozzle mechanism by flange, nozzle mechanism is outer has cooling water coil 3 around volume, cooling water coil is made by the Inconel600 high temperature material, and the temperature of cooling water in cooling water coil is 160-200 ℃.Nozzle mechanism includes and once sprays oxygen mouth 4, once sprays in the oxygen mouth and is provided with coal slurry nozzle 5, and the coal slurry nozzle is made by GH188 and UMCo-50 high-abrasive material, and the outside surface of coal slurry nozzle is coated with ceramic layer.Once spray between oxygen mouth and coal slurry nozzle and be provided with the gap that can allow oxygen pass through, be provided with secondary spray oxygen mouth 6 in the coal slurry nozzle, be provided with the gap that can allow coal slurry pass through between coal slurry nozzle and secondary spray oxygen mouth, be provided with the passage that can allow oxygen pass through in secondary spray oxygen mouth, secondary spray oxygen mouth tip-to-face distance burner end standard face has certain retraction amount, the end of once spraying oxygen mouth, coal slurry nozzle, secondary spray oxygen mouth be all the reducing type, once sprays oxygen mouth, coal slurry nozzle, secondary and sprays the oxygen mouth and be communicated with oxygen entrance 7, coal slurry entrance 8, secondary oxygen entrance 9 by pipeline mechanism respectively.Pipeline mechanism includes the first flange 10 be connected with nozzle mechanism, the first flange is connected with the first threeway 12 by outer tube, the first threeway connects respectively oxygen entrance 7 one time, the second flange 11, the second flange is connected with the second threeway 14 by coal slurry pipe 13, the coal slurry pipe extend in outer tube, the second threeway connects respectively coal slurry entrance 8, three-flange 15, three-flange is connected with the 3rd threeway 17 by inner tube 16, inner tube extend in the coal slurry pipe, the 3rd threeway is connecting secondary oxygen entrance 9 respectively, the 4th flange 18, the two ends of cooling water coil are connected with cooling water outlet 20, cooling water inlet 19.The front end of an oxygen entrance is provided with the water diversion disk 2 that is communicated with cooling water coil 3, and the angle γ of this part that cooling water coil is connected with water diversion disk and horizontal plane is 15 °.The spray oxygen amount of secondary spray oxygen mouth is 20% of total spray oxygen amount, and all the other are the spray oxygen amount of once spraying the oxygen mouth.Once spraying the inwall of oxygen mouth and the angle α of vertical plane is 50 °, and the angle β of the inwall of coal slurry nozzle and vertical plane, the outer wall of secondary spray oxygen mouth and the angle of vertical plane are all 70 °.Form the pre-confounding of coal water slurry between secondary spray oxygen mouth end face and burner end standard face, pre-confounding outlet mean flow rate is generally the 12-20 meter per second, the exit velocity of secondary spray oxygen mouth is generally the 150-180 meter per second, coal slurry jet exit flow velocity is generally the 2-4 meter per second, and the exit velocity that once sprays the oxygen mouth is generally the 160-200 meter per second.
During use, whole process burner is linked in vapourizing furnace by flange, at oxygen entrance 7, secondary oxygen entrance 9, coal slurry entrance 8 interior difference oxygen and a coal slurry, oxygen, coal slurry are respectively from once spraying oxygen mouth 4, secondary spray oxygen mouth 6,5 ejections of coal slurry nozzle, at pre-confounding, mixed, after ignition device, coal slurry and purity oxygen be in the cigarette burning of burner, the gas mixture that the main component that reaction generates is carbon monoxide and hydrogen.
The foregoing is only specific embodiment of the utility model, but constitutional features of the present utility model is not limited to this, any those skilled in the art is in field of the present utility model, and the variation of doing or modification all are encompassed among the scope of the claims of the present utility model.
Claims (9)
1. a high strength vapourizing furnace process burner, comprise outer tube (1), it is characterized in that described outer tube (1) one end is connected with nozzle mechanism by flange, nozzle mechanism is outer has cooling water coil (3) around volume, nozzle mechanism includes and once sprays oxygen mouth (4), once spray in the oxygen mouth and be provided with coal slurry nozzle (5), once spray between oxygen mouth and coal slurry nozzle and be provided with the gap that can allow oxygen pass through, be provided with secondary spray oxygen mouth (6) in the coal slurry nozzle, be provided with the gap that can allow coal slurry pass through between coal slurry nozzle and secondary spray oxygen mouth, be provided with the passage that can allow oxygen pass through in secondary spray oxygen mouth, secondary spray oxygen mouth tip-to-face distance burner end standard face has certain retraction amount, once spray the oxygen mouth, the coal slurry nozzle, the end of secondary spray oxygen mouth is all the reducing type, once spray the oxygen mouth, the coal slurry nozzle, secondary spray oxygen mouth is communicated with an oxygen entrance (7) by pipeline mechanism respectively, coal slurry entrance (8), secondary oxygen entrance (9), the 15-30% that the spray oxygen amount of secondary spray oxygen mouth is total spray oxygen amount, all the other are the spray oxygen amount of once spraying the oxygen mouth.
2. a kind of high strength vapourizing furnace process burner according to claim 1, it is characterized in that describedly once spraying the inwall of oxygen mouth (4) and the angle α of vertical plane is 45-55 °, the angle β of the inwall of coal slurry nozzle and vertical plane, the outer wall of secondary spray oxygen mouth (6) and the angle of vertical plane are all 65-75 °.
3. a kind of high strength vapourizing furnace process burner according to claim 1 and 2, is characterized in that described cooling water coil (3) made by the Inconel600 high temperature material.
4. a kind of high strength vapourizing furnace process burner according to claim 1 and 2, is characterized in that described coal slurry nozzle (5) made by GH188 or UMCo-50 high-abrasive material.
5. a kind of high strength vapourizing furnace process burner according to claim 1 and 2, is characterized in that the outside surface of described coal slurry nozzle (5) is coated with ceramic layer.
6. a kind of high strength vapourizing furnace process burner according to claim 1 and 2, it is characterized in that forming the pre-confounding of coal water slurry between described secondary spray oxygen mouth (6) end face and burner end standard face, pre-confounding outlet mean flow rate is generally the 12-20 meter per second, the exit velocity of secondary spray oxygen mouth is generally the 150-180 meter per second, coal slurry nozzle (6) exit velocity is generally the 2-4 meter per second, and the exit velocity that once sprays oxygen mouth (4) is generally the 160-200 meter per second.
7. a kind of high strength vapourizing furnace process burner according to claim 1 and 2, is characterized in that the temperature of cooling water in described cooling water coil (3) is 160-200 ℃.
8. a kind of high strength vapourizing furnace process burner according to claim 1 and 2, it is characterized in that described pipeline mechanism includes the first flange (10) be connected with nozzle mechanism, the first flange is connected with the first threeway (12) by outer tube (1), the first threeway connects respectively an oxygen entrance (7), the second flange (11), the second flange is connected with the second threeway (14) by coal slurry pipe (13), the coal slurry pipe extend in outer tube, the second threeway connects respectively coal slurry entrance (8), three-flange (15), three-flange is connected with the 3rd threeway (17) by inner tube (16), inner tube extend in the coal slurry pipe, the 3rd threeway is connecting secondary oxygen entrance (9) respectively, the 4th flange (18), the two ends of cooling water coil (3) are connected with cooling water outlet (20), cooling water inlet (19).
9. a kind of high strength vapourizing furnace process burner according to claim 1 and 2, the front end that it is characterized in that a described oxygen entrance (7) is provided with the water diversion disk (2) that is communicated with cooling water coil (3), and the angle γ of this part that cooling water coil is connected with water diversion disk and horizontal plane is 10-20 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320304345 CN203346349U (en) | 2013-05-30 | 2013-05-30 | Process burning nozzle of high-strength gasification furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320304345 CN203346349U (en) | 2013-05-30 | 2013-05-30 | Process burning nozzle of high-strength gasification furnace |
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| Publication Number | Publication Date |
|---|---|
| CN203346349U true CN203346349U (en) | 2013-12-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320304345 Withdrawn - After Issue CN203346349U (en) | 2013-05-30 | 2013-05-30 | Process burning nozzle of high-strength gasification furnace |
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| Country | Link |
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| CN (1) | CN203346349U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103305284A (en) * | 2013-05-30 | 2013-09-18 | 杭州浙南压缩机有限公司 | High-strength gasifier process burner |
| CN103849434A (en) * | 2014-03-13 | 2014-06-11 | 杜建吉 | Combined type coal water slurry nozzle provided with ignition device |
-
2013
- 2013-05-30 CN CN 201320304345 patent/CN203346349U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103305284A (en) * | 2013-05-30 | 2013-09-18 | 杭州浙南压缩机有限公司 | High-strength gasifier process burner |
| CN103305284B (en) * | 2013-05-30 | 2014-10-08 | 杭州浙南压缩机有限公司 | High-strength gasifier process burner |
| CN103849434A (en) * | 2014-03-13 | 2014-06-11 | 杜建吉 | Combined type coal water slurry nozzle provided with ignition device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131218 Effective date of abandoning: 20141008 |
|
| RGAV | Abandon patent right to avoid regrant |