WO2019107355A1 - バーナ装置及び多管式貫流ボイラ装置 - Google Patents
バーナ装置及び多管式貫流ボイラ装置 Download PDFInfo
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- WO2019107355A1 WO2019107355A1 PCT/JP2018/043590 JP2018043590W WO2019107355A1 WO 2019107355 A1 WO2019107355 A1 WO 2019107355A1 JP 2018043590 W JP2018043590 W JP 2018043590W WO 2019107355 A1 WO2019107355 A1 WO 2019107355A1
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- Prior art keywords
- passage
- fuel
- mixture
- gas
- mixing chamber
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
- F23R3/28—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply
- F23R3/286—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply having fuel-air premixing devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B21/00—Water-tube boilers of vertical or steeply-inclined type, i.e. the water-tube sets being arranged vertically or substantially vertically
- F22B21/02—Water-tube boilers of vertical or steeply-inclined type, i.e. the water-tube sets being arranged vertically or substantially vertically built-up from substantially-straight water tubes
- F22B21/04—Water-tube boilers of vertical or steeply-inclined type, i.e. the water-tube sets being arranged vertically or substantially vertically built-up from substantially-straight water tubes involving a single upper drum and a single lower drum, e.g. the drums being arranged transversely
- F22B21/06—Water-tube boilers of vertical or steeply-inclined type, i.e. the water-tube sets being arranged vertically or substantially vertically built-up from substantially-straight water tubes involving a single upper drum and a single lower drum, e.g. the drums being arranged transversely the water tubes being arranged annularly in sets, e.g. in abutting connection with drums of annular shape
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- 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
- F23D14/62—Mixing devices; Mixing tubes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
- F23R3/28—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply
-
- 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
- F23D2900/14—Special features of gas burners
- F23D2900/14021—Premixing burners with swirling or vortices creating means for fuel or 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
- F23D2900/14—Special features of gas burners
- F23D2900/14241—Post-mixing with swirling means
Definitions
- the present invention relates to a burner apparatus for mixing and burning a fuel gas such as hydrogen gas and other types of gas.
- a highly reactive fuel such as a hydrogen-containing fuel tends to generate NOx because the combustion temperature is high, and it is necessary to suppress this.
- An object of the present invention is to provide a burner device capable of suppressing the generation of NOx even when using a highly reactive fuel such as hydrogen gas.
- the burner device is A burner device for supplying a mixture of fuel gas and auxiliary gas to a combustion region, A primary mixing passage into which fuel gas and auxiliary gas are introduced and mixed; A secondary mixing chamber formed on the inner side of a wall of a rotor-shaped wall, which is located on the inner diameter side of the primary mixing passage and into which the mixture from the primary mixing passage is introduced and mixed, A secondary mixing chamber forming an injection port for injection into the combustion region; The swirl flow of the mixture is generated by being formed on the peripheral wall of the secondary mixing chamber, and introducing the mixture from the primary mixing passage into the secondary mixing chamber in the eccentric direction of the secondary mixing chamber.
- Multiple mixture introduction holes, And a mixed injection body having
- the first and second gas passages for introducing one of the fuel gas and the auxiliary combustion gas from the radially outer side into the primary mixing passage, the mixed injection body, and the fuel gas and the auxiliary combustion gas may further have a second gas passage for introducing the other into the primary mixing passage in a direction crossing the first gas passage. According to this configuration, the shear force at the time of intersection of the fuel gas and the combustion assisting gas promotes first-stage mixing in the primary mixing passage.
- the burner apparatus concerning one Embodiment of this invention may be equipped with two or more said mixing injection bodies. According to this configuration, the temperature increase can be more effectively suppressed locally by injecting the necessary amount of fuel as a whole from the plurality of mixed injection bodies (injection ports) in a distributed manner. This further suppresses the generation of NOx.
- the secondary mixing chamber may be expanded in diameter toward the downstream side. According to this configuration, the swirl flow is generated in the secondary mixing chamber, and the mixture is allowed to flow along the wall surface of the secondary mixing chamber, whereby the low flow velocity region of the mixture is not formed in the vicinity of the wall surface. Can be prevented.
- the secondary mixing chamber when the diameter of the secondary mixing chamber is expanded toward the downstream side, the secondary mixing chamber is disposed concentrically with the secondary mixing chamber, and
- the fuel cell system may further include an auxiliary cone member for injecting the auxiliary fuel gas from the upstream portion into the secondary mixing chamber. According to this configuration, backfire from the central portion of the secondary mixing chamber can be prevented by injecting the auxiliary combustion gas from the auxiliary cone member.
- the secondary mixing chamber may have a diameter reduced toward the downstream side. According to this configuration, uneven distribution of fuel in the swirling flow of the air-fuel mixture can be suppressed, and more uniform mixing can be realized. Further, by reducing the opening area of the injection port, the flow velocity of the air-fuel mixture is increased, and the occurrence of flashback phenomenon can be effectively prevented.
- the multi-tube type once-through boiler device is A water tube group consisting of a large number of water tubes arranged in a ring; A connecting wall connecting the adjacent water pipes; The burner apparatus having a plurality of the mixed injection bodies disposed to inject a mixture into a combustion chamber formed by the water tube group and the connection wall; The plurality of mixing injectors of the burner apparatus are arranged in a ring concentric with the water tube group.
- the plurality of mixed injection bodies annularly arranged may be arranged to generate a swirling flow of air-fuel mixture in the same direction. According to this configuration, a large swirling flow of the flame can be generated in the combustion chamber, and the flame can efficiently collide with the water pipe. Therefore, the heat transfer to the water pipe is further promoted.
- the plurality of mixed injection bodies arranged annularly are arranged such that adjacent mixed injection bodies generate a swirling flow of air-fuel mixture in the opposite direction. It may be According to this configuration, it is possible to generate a flow of flame outward in the radial direction between the adjacent mixed injection bodies, and to make the water pipe collide with the flame efficiently. Therefore, the heat transfer to the water pipe is further promoted.
- FIG. 1 shows a burner apparatus according to an embodiment of the present invention.
- the burner device 1 shown in the figure is a device for supplying a mixture MG of a fuel gas and a combustion assisting gas to a combustion region R.
- the burner device 1 is used, for example, as a heating device of a power plant such as a boiler or a gas turbine.
- the fuel gas is, for example, a fuel having a high burning rate and a wide flammable concentration range, and in the present embodiment, a hydrogen-containing gas such as hydrogen gas is used as the fuel gas. Further, in the present embodiment, air A is used as the auxiliary combustion gas.
- auxiliary gas in addition to air, for example, gas in which the oxygen concentration in the air is adjusted, exhaust gas, etc. can be used.
- the fuel gas is referred to as "fuel F”
- the auxiliary fuel gas is referred to as "air A”.
- the burner device 1 includes a mixed injection body 7 including a cone member 5 that forms an injection port 3 for injecting the mixture MG into the combustion region R.
- the mixed injection body 7 has a hollow truncated cone-shaped cone member 5 and a hollow cylindrical member 9 that accommodates the cone member 5.
- the hollow cylindrical member 9 is formed in a hollow cylindrical shape.
- the cone member 5 and the hollow cylindrical member 9 are arranged concentrically.
- the hollow cylindrical member 9 may have a rectangular cylindrical shape.
- the burner device 1 is provided with a plurality of (12 in this example, the 12 mixed injectors arranged in 4 ⁇ 3), that is, a plurality of cone members 5.
- axial direction X a direction parallel to the axial direction of each cone member 5
- the radial direction of the cone member 5 is simply referred to as “radial direction”.
- the burner apparatus 1 may be equipped with the pilot burner for ignition which is not shown in figure separately from the mixing injection body 7. As shown in FIG. At the time of ignition, ignition fuel is injected from the pilot burner to the combustion region R.
- an air introduction header 11 for introducing the air A into the mixed injection body 7 and a fuel introduction header 13 for introducing the fuel F into the mixed injection body 7 are provided.
- the upstream bottom wall 9 a of the hollow cylindrical member 9 is fitted into the downstream side wall 13 a of the fuel introduction header 13.
- a fuel introduction pipe 15 forming an introduction passage of the fuel F is connected to the upstream side wall 13 b of the fuel introduction header 13. That is, the fuel introduction pipe 15 is extended in the axial direction X, and introduces the fuel F into the fuel introduction header 13 in the axial direction X.
- the air introduction header 11 is formed to surround the mixed injection body 7, the fuel introduction header 13 and the fuel introduction pipe 15 arranged as described above.
- An air introduction pipe 17 forming an introduction passage of air A is connected to one side wall 11 a of the air introduction header 11.
- the fuel F introduced into the fuel introduction header 13 is dispersed in a planar direction parallel to the axial direction X which is also the introduction direction of the fuel F, and then introduced into the hollow cylindrical member 9.
- the structure of the hollow cylindrical member 9 will be described in detail later.
- a straightening vane 19 is provided so as to project upstream.
- the fuel F introduced into the fuel introduction header 13 is dispersed substantially uniformly in the plane direction parallel to the axial direction X by colliding with the straightening vane 19.
- the fuel F may directly collide with the downstream side wall 13 a of the fuel introduction header 13 by omitting the rectifying plate 19.
- the air A introduced into the air introduction header 11 is introduced into the hollow cylindrical member 9 after passing through the gap 21 between the air introduction header 11 and the fuel introduction header 13.
- an air passage (first gas passage) 25 is formed in the side wall 9 b of the hollow cylindrical member 9 of the mixture injection body 7 so as to extend through the side wall 9 b and further inward.
- the air A from the air introduction header 11 is introduced into the mixing passage (hereinafter referred to as "primary mixing passage 27") formed outside the cone member 5 through the air passage 25. That is, the air passage 25 introduces the air A radially outward into the primary mixing passage 27.
- a plurality of air passages 25 are formed.
- the primary mixing passage 27 is formed as a passage extending further inward from the air passage 25 and extending to the peripheral wall 5 a of the cone member 5.
- the entire gas passage extending from the side wall 9b of the hollow cylindrical member 9 of the present embodiment to the peripheral wall 5a of the cone member 5 to form the air passage 25 and the primary mixing passage 27 I call it ".
- a fuel passage (second gas passage) 31 for introducing the fuel F from the fuel introduction header 13 into the primary mixing passage 27 is formed in the upstream bottom wall 9 a of the hollow cylindrical member 9.
- a plurality of fuel passages 31 are arranged at equal intervals along the peripheral edge of the upstream bottom wall 9 a of the hollow cylindrical member 9.
- each fuel passage 31 extends in the axial direction X.
- Each fuel passage 31 extends through the upstream bottom wall 9 a of the hollow cylindrical member 9 further downstream, and is connected to the upstream end of the primary mixing passage 27.
- the air passage 25 is on the upstream side of the connecting portion of the gas passage 29 with the fuel passage 31, and the primary mixing passage 27 is on the downstream side.
- the primary mixing passage 27 the fuel F introduced from the fuel introduction header 13 and the air A introduced from the air introduction header 11 are mixed.
- the mixture MG from the primary mixing passage 27 is made into a mixing chamber (hereinafter referred to as "secondary mixing chamber 33") which is an inner space of the cone member 5.
- a plurality of mixed gas introduction holes 35 to be introduced are formed. That is, the secondary mixing chamber 33 is formed inside the frusto-conical wall surface located on the inner diameter side of the primary mixing passage 27.
- the mixture MG introduced from the primary mixing passage 27 is further mixed.
- the plurality of air-fuel mixture introduction holes 35 are arranged at equal intervals in the circumferential direction at a plurality of (three in this example) axial direction X positions in the peripheral wall 5a of the cone member 5. It is done.
- the air-fuel mixture introduction holes 35 arranged in the axial direction X position in the axial direction X position on the back side from the front side of the drawing sheet are shown in this order as mixture air-introduction holes 35A, 35B and 35C by solid lines, broken lines and one-dot chain lines. ing.
- the gas passages 29 described later are similarly distinguished and shown.
- the circumferential position of the air-fuel mixture introduction hole 35 is arranged to be deviated between different axial direction X positions.
- the mixture MG is further injected to the mixture MG from the upstream side by providing the mixture introduction holes 35 at a plurality of (three in this example) axial direction X positions different from each other. Promoted. Further, more uniform mixing can be realized by arranging the air-fuel mixture introduction hole 35 so that the circumferential direction position thereof is deviated between the different axial direction X positions.
- the plurality of air-fuel mixture introduction holes 35 are provided so as to extend in the eccentric direction of the secondary mixing chamber 33 at each axial direction X position. That is, each mixture introduction hole 35 extends in a direction inclined with respect to the radial direction. Further, the inclination angles with respect to the radial direction of the plurality of air-fuel mixture introduction holes 35 at the same axial direction X position are the same. With the plurality of mixture introduction holes 35 configured in this manner, the mixture introduction holes 35 are configured to set the mixture MG from the primary mixing passage 27 into the secondary mixing chamber 33 and the secondary mixing chamber 33. By introducing in the eccentric direction, a swirling flow of the mixture MG is generated.
- the gas passages 29 forming the air passages 25 and the primary mixing passage 27 are formed at positions and angles corresponding to the mixture introduction holes 35 of the cone member 5.
- the numbers of the air passages 25 and the primary mixing passages 27 provided in the hollow cylindrical member 9 are the same as the number of the air-fuel mixture introduction holes 35 (12 in this example), and each gas passage
- the reference numeral 29 is arranged so as to have the same axis (mixture introduction axis) C1 as the mixture introduction hole 35 of the cone member 5.
- the air passage 25, the primary mixing passage 27 and the mixture introduction hole 35 into the above-mentioned structure, it is possible to effectively generate the swirling flow of the mixture MG in the secondary mixing chamber 33 with a simple structure.
- a plurality of air-fuel mixture introduction holes 35 are provided so as to extend in the eccentric direction of the secondary mixing chamber 33 at at least one axial direction X position, the swirling flow of the air-fuel mixture MG is transmitted to the secondary mixing chamber 33. Can be generated.
- the other configurations of the air passage 25, the primary mixing passage 27 and the mixture introduction hole 35 are not limited to the illustrated example.
- each fuel passage 31 is configured to introduce the fuel F into the primary mixing passage 27 in a direction intersecting the air passage 25.
- the number of fuel passages 31 provided in the hollow cylindrical member 9 is the same as the number of air passages 25 (12 in this example), and each fuel passage 31 has its axial center (fuel The introductory axis C2 is disposed to be orthogonal to the axial center (air introductory axis) C3 of the corresponding air passage 25.
- each fuel passage 31 by configuring each fuel passage 31 to introduce the fuel F into the primary mixing passage 27 in the direction intersecting the air passage 25, the shear force at the time of the fuel F and the air A crossing causes the primary to flow. First stage mixing in the mixing passage 27 is promoted.
- the crossing angle ⁇ between the fuel introduction axis C2 and the air introduction axis C3 is preferably 90 ° as in this example, but 90 It is not limited to °. Also, it is not essential that each fuel passage 31 be configured to introduce the fuel F into the primary mixing passage 27 in a direction intersecting the air passage 25.
- each fuel passage 31 in the air passage 25 so as to be eccentrically connected to the air introduction axis C3
- a swirling flow of the fuel F is generated in the primary mixing passage 27. Even in this case, the mixing of the fuel F and the air A in the primary mixing passage 27 is promoted.
- the introduction paths of the fuel F and the air A to the primary mixing passage 27 may be interchanged. That is, the fuel F may be allowed to pass through the first gas passage described as the air passage 25 and the air A may be allowed to pass through the second gas passage described as the fuel passage 31. In this case, the air A and the fuel F which are also passed through the corresponding introduction headers 11 and 13 and the introduction pipes 15 and 17 are switched.
- the hollow truncated cone secondary mixing chamber 33 shown in FIG. 2 is expanded in diameter toward the downstream side.
- an auxiliary cone disposed concentrically with the secondary mixing chamber 33 and injecting air A into the secondary mixing chamber 33 from the uppermost stream portion of the secondary mixing chamber 33.
- a member 37 may be provided.
- the auxiliary cone member 37 is formed in the shape of a hollow truncated cone whose diameter decreases toward the downstream side.
- the air A injected from the auxiliary cone member 37 is supplied from, for example, the air introduction header 11 (FIG. 1) by providing the auxiliary air introduction passage 39 for the auxiliary cone member 37 penetrating the fuel introduction header 13 (FIG. 1). Be done.
- a swirling flow is generated in the secondary mixing chamber 33 expanding in diameter toward the downstream side, and the mixture MG flows along the wall surface of the secondary mixing chamber 33, whereby a low speed region of the mixture MG is formed in the vicinity of the wall surface. As it disappears, the occurrence of flashback can be prevented. Furthermore, by injecting the air A from the auxiliary cone member 37, flashback from the central portion of the secondary mixing chamber 33 can be prevented.
- the secondary mixing chamber 33 may be reduced in diameter toward the downstream side. In this case, uneven distribution of the fuel F in the swirling flow of the mixture MG is suppressed, and more uniform mixing can be realized. In addition, by reducing the opening area of the injection port 3, the flow velocity is increased, and the occurrence of flashback can be effectively prevented.
- the shape of the wall surface which forms the secondary mixing chamber 33 may be rotary body shapes other than the truncated cone shape illustrated above, and may be cylindrical shape as an example.
- the mixed injection body 7 for forming the mixture M and injecting it into the combustion region R the cone member 5, the hollow cylindrical member 9, and each element for passing and mixing the gas (primary mixing
- etc., was demonstrated.
- the aspect of the mixed injection body 7 is not limited to this. That is, the mixing injection body 7 may be formed so as to have the respective elements for passing and mixing the gas described in the present embodiment, and for example, each of the above-mentioned each is obtained by cutting out a single metal block. It may be a member formed to have an element.
- premixing is promoted by mixing the two types of gases in two stages by the primary mixing passage 27 and the secondary mixing chamber 33, so that a uniform mixture MG is generated.
- Generation of As a result, local temperature increase of the flame is suppressed, and generation of NOx is suppressed.
- by generating a swirling flow in the secondary mixing chamber 33 further mixing promotion becomes possible.
- the boiler apparatus 51 is equipped with the burner apparatus 1 which concerns on the said embodiment.
- the boiler device 51 further includes a water pipe group 53 composed of a large number of water pipes arranged in an annular shape (in this example, two inner and outer annular shapes).
- the water tube groups 53 communicate with each other by an annular upper header 55 and a lower header 57.
- adjacent water pipes are connected by a connecting wall 59.
- a combustion chamber 61 is formed by the water pipe group 53 and the connection wall 59.
- the burner device 1 is disposed to inject the air-fuel mixture MG into the combustion chamber 57. That is, the water tube group 53 forming the combustion chamber 1 is disposed so as to surround the mixed injection body 7 which injects the air-fuel mixture MG in plan view. In the figure, the water tubes in the outer row are omitted.
- the mixed injection bodies 7 are arranged in an annular shape concentric with the water tube group 53.
- the plurality of mixed injection bodies 7 arranged in an annular shape are arranged to generate a swirling flow of the air-fuel mixture MG in the same direction.
- a large swirling flow F1 of the flame can be generated in the combustion chamber 57, and the flame can efficiently collide with the water tube group 53. Therefore, the heat transfer to the water tube group 53 is promoted.
- the mixed sprayer 7 in addition to the mixed sprayer 7 annularly arranged inside the water tube group 53, the mixed sprayer 7 is disposed at the center of the annular array. By arranging the mixed injection body 7 also in the central portion, the flame distribution in the combustion chamber 57 is made more uniform, and the occurrence of flashback is suppressed.
- the mixing sprayers 7 may be arranged in a single or multiple manner inside the mixing sprayers 7 arranged in a ring as illustrated.
- the boiler apparatus 51 which concerns on FIG. 9 at 2nd Embodiment is shown.
- sequence aspect of the several mixing injection body 7 in the burner apparatus 1 differs from 1st Embodiment. That is, in the present embodiment, the plurality of mixed injection bodies 7 arranged in an annular shape are arranged such that the adjacent mixed injection bodies 7 generate a swirling flow of the air-fuel mixture MG in the opposite direction.
- the other configuration is the same as that of the boiler apparatus 51 according to the first embodiment shown in FIG.
- the flow F2 of the flame outward in the radial direction is generated between the adjacent mixed injection bodies 7, 7, and the flame is efficiently transmitted to the water pipe 53. Can collide. Therefore, the heat transfer to the water pipe 53 is promoted.
- the positional relationship between the water tube group 53 and the mixed injection body 7 in plan view is not limited to the illustrated example, but in the present embodiment, in order to make the water tube 53 collide with the flame more efficiently, FIG. As shown, it is preferable that one water pipe 53 be disposed on the outside of the circumferential position between the adjacent mixed spray bodies 7, 7.
- the arrangement mode of the mixed injection body 7 is not limited to these examples. That is, the burner device 1 according to the present embodiment does not inject the mixture MG in a direction parallel to the water tube group 53, but injects the mixture MG as a swirl flow, so the mixed injection body 7 of the burner device 1 If arranged in a ring shape concentric with the water tube group 53, the flame generated by the mixture MG injected from the cone member 5 collides with the water tube 53, and heat transfer to the water tube group 53 is promoted.
- the burner device 1 according to the present embodiment can be applied not only to the boiler device 51 but also to other types of power devices such as the above-described gas turbine.
- burner device 3 injection port 7 mixing injection body 25 air passage (first gas passage) 27 Primary mixing passage 31
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Abstract
Description
燃料ガスと助燃ガスとの混合気を燃焼領域に供給するバーナ装置であって、
燃料ガスと助燃ガスとが導入されて混合される一次混合通路と、
前記一次混合通路の内径側に位置し、前記一次混合通路からの混合気が導入されてさらに混合される、回転体形状の壁面の内側に形成された二次混合室であって、混合気を前記燃焼領域へ噴射する噴射口を形成する二次混合室と、
前記二次混合室の周壁に形成されて、前記一次混合通路からの混合気を、前記二次混合室に、前記二次混合室の偏心方向に導入することにより混合気の旋回流を生成する複数の混合気導入孔と、
を有する混合噴射体を備えている。
環状に配列された多数の水管からなる水管群と、
隣接する前記水管間を連結する連結壁と、
前記水管群および連結壁によって形成される燃焼室に混合気を噴射するように配置された、複数の前記混合噴射体を有する前記バーナ装置と、
を備え
前記バーナ装置の複数の前記混合噴射体が、前記水管群と同心の環状に配列されている。
3 噴射口
7 混合噴射体
25 空気通路(第1ガス通路)
27 一次混合通路
31 燃料通路(第2ガス通路)
33 二次混合室
35 混合気導入孔
51 ボイラ装置
53 水管群
55 連結壁
57 燃焼室
A 空気(助燃ガス)
F 燃料(燃料ガス)
MG 混合気
R 燃焼領域
Claims (9)
- 燃料ガスと助燃ガスとの混合気を燃焼領域に供給するバーナ装置であって、
燃料ガスと助燃ガスとが導入されて混合される一次混合通路と、
前記一次混合通路の内径側に位置し、前記一次混合通路からの混合気が導入されてさらに混合される、回転体形状の壁面の内側に形成された二次混合室であって、混合気を前記燃焼領域へ噴射する噴射口を形成する二次混合室と、
前記二次混合室の周壁に形成されて、前記一次混合通路からの混合気を、前記二次混合室に、前記二次混合室の偏心方向に導入することにより混合気の旋回流を生成する複数の混合気導入孔と、
を有する混合噴射体を備えるバーナ装置。 - 請求項1に記載のバーナ装置において、
前記混合噴射体が、
燃料ガスおよび助燃ガスの一方を径方向外方から前記一次混合通路に導入する第1ガス通路と、
燃料ガスおよび助燃ガスの他方を前記第1ガス通路に交差する方向に前記一次混合通路に導入する第2ガス通路と、
をさらに有するバーナ装置。 - 請求項1または2に記載のバーナ装置において、前記混合噴射体を複数備えるバーナ装置。
- 請求項1から3のいずれか一項に記載のバーナ装置において、前記二次混合室が下流側に向かって拡径しているバーナ装置。
- 請求項4に記載のバーナ装置において、前記二次混合室と同心状に配置されて、前記二次混合室の最上流部から助燃ガスを前記二次混合室内に噴射する補助コーン部材をさらに備えるバーナ装置。
- 請求項1から3のいずれか一項に記載のバーナ装置において、前記二次混合室が下流側に向かって縮径しているバーナ装置。
- 環状に配列された多数の水管からなる水管群と、
隣接する前記水管間を連結する連結壁と、
前記水管群および連結壁によって形成される燃焼室に混合気を噴射するように配置された請求項3から6のいずれか一項に記載のバーナ装置と、
を備え
前記バーナ装置の複数の前記混合噴射体が、前記水管群と同心の環状に配列されている、
多管式貫流ボイラ装置。 - 請求項7に記載のボイラ装置において、環状に配列された複数の前記混合噴射体が、同一方向の混合気の旋回流を生成するように配置されている多管式貫流ボイラ装置。
- 請求項7に記載のボイラ装置において、環状に配列された複数の前記混合噴射体が、隣接する混合噴射体が逆方向の混合気の旋回流を生成するように配置されている多管式貫流ボイラ装置。
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|---|---|---|---|
| CN201880076487.8A CN111630320B (zh) | 2017-11-29 | 2018-11-27 | 燃烧器装置及多管式直流锅炉装置 |
| EP18883640.7A EP3719396B1 (en) | 2017-11-29 | 2018-11-27 | Multi-tube through-flow boiler device |
| KR1020207018414A KR102462494B1 (ko) | 2017-11-29 | 2018-11-27 | 버너 장치 및 다관식 관류 보일러 장치 |
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| JP2017-229025 | 2017-11-29 | ||
| JP2017229025A JP7126346B2 (ja) | 2017-11-29 | 2017-11-29 | バーナ装置 |
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| WO2019107355A1 true WO2019107355A1 (ja) | 2019-06-06 |
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| JP (1) | JP7126346B2 (ja) |
| KR (1) | KR102462494B1 (ja) |
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| CN114198771A (zh) * | 2021-11-04 | 2022-03-18 | 华能武汉发电有限责任公司 | 一种防水冷壁高温腐蚀的直流锅炉 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113776085A (zh) * | 2021-10-08 | 2021-12-10 | 浙江浙能技术研究院有限公司 | 一种低污染燃烧室喷嘴端部结构及方法 |
| EP4563801A1 (en) * | 2022-07-27 | 2025-06-04 | IHI Corporation | Combustion system |
| US20240191874A1 (en) * | 2022-12-07 | 2024-06-13 | Beckett Thermal Solutions | Combustor |
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| Publication number | Publication date |
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| JP2019100571A (ja) | 2019-06-24 |
| CN111630320A (zh) | 2020-09-04 |
| KR20200090883A (ko) | 2020-07-29 |
| CN111630320B (zh) | 2023-01-10 |
| KR102462494B1 (ko) | 2022-11-03 |
| JP7126346B2 (ja) | 2022-08-26 |
| EP3719396B1 (en) | 2025-10-22 |
| EP3719396A1 (en) | 2020-10-07 |
| EP3719396A4 (en) | 2021-08-04 |
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