JPH0481082B2 - - Google Patents
Info
- Publication number
- JPH0481082B2 JPH0481082B2 JP19757183A JP19757183A JPH0481082B2 JP H0481082 B2 JPH0481082 B2 JP H0481082B2 JP 19757183 A JP19757183 A JP 19757183A JP 19757183 A JP19757183 A JP 19757183A JP H0481082 B2 JPH0481082 B2 JP H0481082B2
- Authority
- JP
- Japan
- Prior art keywords
- premixture
- guide vane
- fuel pipe
- air guide
- front plate
- 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.)
- Expired - Lifetime
Links
- 239000000446 fuel Substances 0.000 claims description 26
- 239000003381 stabilizer Substances 0.000 claims description 14
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- 238000002485 combustion reaction Methods 0.000 description 28
- 238000009792 diffusion process Methods 0.000 description 6
- 239000002737 fuel gas Substances 0.000 description 5
- 239000007789 gas Substances 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 238000004904 shortening Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
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
- F23D14/46—Details, e.g. noise reduction means
- F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
- F23D14/74—Preventing flame lift-off
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gas Burners (AREA)
Description
【発明の詳細な説明】
この発明はガスタービン廃ガス等濃度13〜
18wet.Vol％の酸素を含んでいる廃ガスを利用す
るボイラの助燃用ガス焚きダクトバーナ装置の改
良に関するものである。[Detailed Description of the Invention] This invention provides gas turbine exhaust gas with a concentration of 13~
This invention relates to the improvement of a gas-fired duct burner device for auxiliary combustion of a boiler that utilizes waste gas containing 18 wet.Vol% oxygen.
従来例を第１図、第２図により説明すると、燃
料管０３の一側に先開きの空気案内羽根０１を設
け、その燃料管０３と末広がりの空気案内羽根０
１の基部との間にスリツト状の隙間０２を設ける
と共に、燃料管０３と空気案内羽根０１とを点付
０９により固定する。 A conventional example will be explained with reference to FIGS. 1 and 2. An air guide vane 01 that opens at the end is provided on one side of a fuel pipe 03, and the air guide vane 0 that widens at the end is connected to the fuel pipe 03.
A slit-like gap 02 is provided between the fuel pipe 03 and the base of the air guide vane 01, and the fuel pipe 03 and the air guide vane 01 are fixed with dots 09.
燃料管０３には空気案内羽根０１に沿つて噴出
する燃料噴出孔０４を複数個設け、かつ燃料管０
３と先開きの空気案内羽根０１と前面板０５Ｂと
により囲う予混合気室０５を設け、燃料噴出孔０
４を通して噴出する燃料ガスと隙間０２を通して
流入する燃焼用空気とを混合して予混合気を作
る。 The fuel pipe 03 is provided with a plurality of fuel injection holes 04 that eject fuel along the air guide vane 01, and the fuel pipe 0
A premixture chamber 05 is provided which is surrounded by a front-opening air guide vane 01 and a front plate 05B.
The fuel gas ejected through the gap 02 and the combustion air flowing in through the gap 02 are mixed to form a premixture.
予混合気室０５の前面板０５Ｂに予混合気用ノ
ズル孔０７を複数個設け、空気案内羽根０１の延
長上に保炎器０６を設けると共に保炎器にその直
角方向に多数の補強板０８を設ける。 A plurality of premixture nozzle holes 07 are provided on the front plate 05B of the premixture chamber 05, a flame stabilizer 06 is provided on the extension of the air guide vane 01, and a large number of reinforcing plates 08 are provided in the direction perpendicular to the flame stabilizer. will be established.
燃料ガスは燃料管０３の燃料噴出孔０４を通じ
て予混合室０５へ噴出され、スリツト状の隙間０
２を通じて流入してきた燃焼用空気と混合して予
混合気を作る。 The fuel gas is injected into the premixing chamber 05 through the fuel injection hole 04 of the fuel pipe 03, and the fuel gas is ejected into the premixing chamber 05 through the slit-shaped gap 0.
It mixes with the combustion air that has flowed in through 2 to create a premixture.
予混合気室０５内の混合気は前面板０５Ｂに設
けた予混合気用ノズル孔０７を通して噴出され、
予混合気は保炎器０６内部の循環流と周囲からの
燃焼用空気の拡散により安定した燃焼を持続す
る。 The mixture in the premixture chamber 05 is ejected through the premixture nozzle hole 07 provided on the front plate 05B,
The premixture maintains stable combustion due to the circulating flow inside the flame stabilizer 06 and the diffusion of combustion air from the surroundings.
予混合窒０５の前面板０５Ｂに設けたノズル孔
０７から噴出される予混合気が形成する燃焼火炎
の長さは、保炎器０６の上方及び下方から拡散し
てくる燃焼用空気の速さに左右される。従つて従
来型バーナでは燃焼用空気と予混合気の拡散混合
が遅く、特に燃焼用空気の流速が遅い場合拡散混
合が悪く、その結果細長い燃焼火炎が形成され
る。長い燃焼火炎の場合、ダクトバーナの下流に
設ける蒸発器あるいは過熱器の保護の点からダク
トバーナよりかなり離れた位置に設けることにな
り、コスト増につながる。 The length of the combustion flame formed by the premixed air jetted from the nozzle hole 07 provided on the front plate 05B of the premixed nitrogen 05 is determined by the speed of the combustion air that diffuses from above and below the flame stabilizer 06. depends on. Therefore, in conventional burners, the diffusion mixing of the combustion air and the premixture is slow, especially when the flow velocity of the combustion air is low, the diffusion mixing is poor, resulting in the formation of an elongated combustion flame. In the case of a long combustion flame, the evaporator or superheater installed downstream of the duct burner must be located at a considerable distance from the duct burner in order to protect it, leading to increased costs.
この発明の目的は上記の状況に鑑み、構造を複
雑にすることなく、かつ燃焼用空気の流量及び空
気中酸素の制限なしに短炎のガス焚きダクトバー
ナ装置を提供することにある。 In view of the above circumstances, an object of the present invention is to provide a short-flame gas-fired duct burner device without complicating the structure and without limiting the flow rate of combustion air and oxygen in the air.
この発明の他の目的は燃焼管及び予混合気室の
前面板に穿設されるノズル孔を上方と下方の２つ
の水平線で千鳥足状に配置することにより前面板
に設けたノズル孔から噴出される予混合気と保炎
器の上方及び下方を流れる燃焼用空気との拡散混
合を良くし、燃焼火炎が飛躍的に短くなり、ダク
トバーナと蒸発器あるいは過熱器との距離を飛躍
的に短くすることにある。 Another object of the present invention is to arrange the nozzle holes formed in the front plate of the combustion tube and the premixture chamber in a staggered manner in two horizontal lines, upper and lower, so that air can be emitted from the nozzle holes provided in the front plate. This improves the diffusion and mixing of the premixed air and the combustion air flowing above and below the flame stabilizer, dramatically shortening the combustion flame and dramatically shortening the distance between the duct burner and the evaporator or superheater. There is a particular thing.
本発明を添付図面の第３図〜第５図の実施例に
より説明する。燃料管３の一側に末広がりの空気
案内羽根１を設け、その燃料管３と空気案内羽根
１の基部との間にスリツト状の隙間２を設けると
共に、燃料管３と空気案内羽根１との間を数カ所
の固定板９により固定する。燃料管３の前面に軸
線と平行な少なくとも２線以上に千鳥足状に燃料
噴出ノズル孔４Ａ，４Ｂを穿設する。 The present invention will be explained with reference to the embodiments shown in FIGS. 3 to 5 of the accompanying drawings. An air guide vane 1 that widens toward the end is provided on one side of the fuel pipe 3, and a slit-shaped gap 2 is provided between the fuel pipe 3 and the base of the air guide vane 1. The space between them is fixed by fixing plates 9 at several places. Fuel injection nozzle holes 4A and 4B are bored in the front surface of the fuel pipe 3 in a staggered manner along at least two or more lines parallel to the axis.
又燃料管３と、空気案内羽根１と、前面板５Ｂ
とに囲う予混合気室５を形成する。予混合気室５
の前面板５Ｂに、前記燃料噴出ノズル４Ａ，４Ｂ
の放射線上に、軸線と平行な少くなくとも２線以
上に跨つて千鳥足状に予混合気噴出ノズル孔７
Ａ，７Ｂを複数個設ける。 Also, the fuel pipe 3, the air guide vane 1, and the front plate 5B
A premixture chamber 5 is formed which surrounds the premixture chamber 5. Premixture chamber 5
The fuel injection nozzles 4A, 4B are mounted on the front plate 5B of the
The premixture injection nozzle holes 7 are arranged in a staggered manner over at least two lines parallel to the axis.
A plurality of A and 7B are provided.
又空気案内羽根１の延長上に保炎器６を設け、
その保炎器６に補強及びダクト幅方向の火炎のぶ
れを防ぐための補強板８を複数個設ける。 Further, a flame stabilizer 6 is provided on the extension of the air guide vane 1,
The flame stabilizer 6 is provided with a plurality of reinforcing plates 8 for reinforcing it and preventing flame fluctuation in the duct width direction.
本実施例が従来例と異なる点は燃料管３及び前
面板５Ｂに設けたそれぞれの４Ａ，４Ｂ及び７
Ａ，７Ｂのノズル孔を千鳥足状に配置したことで
ある。ただし上記実施例のように軸線の数を必ず
しも２線にこだわる必要がない。また各ノズル孔
４Ａ，４Ｂ，７Ａ，７Ｂの孔径も必要によつて
種々の孔径とすることもできる。なお燃料管３の
各ノズル孔４Ａ，４Ｂの流体噴出方向は前面板５
Ｂの各ノズル孔７Ａ，７Ｂに合致する如く形成す
るのがよい。 This embodiment differs from the conventional example in that the fuel pipes 3 and 4A, 4B, and 7 are provided on the front plate 5B.
The nozzle holes A and 7B are arranged in a staggered manner. However, it is not necessary to limit the number of axis lines to two as in the above embodiment. Further, the hole diameters of the respective nozzle holes 4A, 4B, 7A, and 7B can also be made to have various hole diameters as necessary. Note that the fluid ejection direction of each nozzle hole 4A, 4B of the fuel pipe 3 is determined by the front plate 5.
It is preferable to form them so as to match the respective nozzle holes 7A and 7B of B.
本発明の作用を説明すると、燃料管３と燃焼用
空気案内羽根１との間のスリツト状の隙間を通し
て、燃焼用空気の一部は予混合室５へ流入する。 To explain the operation of the present invention, a part of the combustion air flows into the premixing chamber 5 through the slit-shaped gap between the fuel pipe 3 and the combustion air guide vane 1.
燃料ガスは燃料管３に設けたノズル孔４Ａ，４
Ｂを通して予混合気室５へ噴出され、スリツト状
の隙間２を通して流入してきた燃焼用空気と混合
して予混合気を形成する。 The fuel gas is supplied through nozzle holes 4A, 4 provided in the fuel pipe 3.
B is injected into the premixture chamber 5 and mixed with combustion air that has flowed in through the slit-shaped gap 2 to form a premixture.
予混合気室５内の燃料ガスと燃焼用空気の混合
気は前面板５Ｂに設けたノズル孔７Ａ，７Ｂを通
して噴出される。 The mixture of fuel gas and combustion air in the premix chamber 5 is ejected through nozzle holes 7A and 7B provided in the front plate 5B.
ノズル孔７Ａ，７Ｂから噴出された予混合気は
保炎器６内部の循環流と周囲からの燃焼用空気の
拡散により安定した燃焼を持続する。 The premixed gas ejected from the nozzle holes 7A and 7B maintains stable combustion due to the circulating flow inside the flame stabilizer 6 and the diffusion of combustion air from the surroundings.
従来型バーナでは予混合気が水平方向に噴出さ
れるので、予混合気と保炎器の上方及び下方を流
れる燃焼用空気との拡散混合が悪く、その結果燃
焼火炎が長くなる。これに対して本発明によれば
水平線より上方に向けられたノズル孔から噴出さ
れる予混合気は保炎器上方を流れる燃焼用空気と
すぐに混合する。又水平線より下方に向けられた
ノズル孔から噴出される予混合気は保炎器下方を
流れる燃焼用空気とすぐに混合するので、その結
果燃焼火炎は短くなる。 In conventional burners, the premixture is ejected in a horizontal direction, resulting in poor diffusion mixing of the premixture and combustion air flowing above and below the flame stabilizer, resulting in a long combustion flame. On the other hand, according to the present invention, the premixture jetted out from the nozzle hole directed above the horizontal line immediately mixes with the combustion air flowing above the flame stabilizer. Further, the premixed air jetted from the nozzle hole directed below the horizontal line immediately mixes with the combustion air flowing below the flame stabilizer, resulting in a shorter combustion flame.
本発明は上記の構成であり、予混合気が保炎器
内で大円に拡散し、燃焼用空気と混合し易くな
り、燃焼火炎が短かくなる。従つてダクトバーナ
と下流に設ける過熱器や蒸発器との間の距離を短
くすることができ、使用資材も少くてすみ大幅な
コストダウンとなる。 The present invention has the above-mentioned configuration, and the premixture diffuses in a large circle within the flame stabilizer, making it easier to mix with combustion air and shortening the combustion flame. Therefore, the distance between the duct burner and the downstream superheater or evaporator can be shortened, and fewer materials can be used, resulting in a significant cost reduction.
第１図は従来例の縦断正面図、第２図は第１図
の−線視側面図、第３図は本発明の縦断正面
図、第４図は第３図の−線視側面図、第５図
は第３図の−線断面側面図である。
１……空気案内羽根、２……隙間、３……燃料
管、４Ａ，４Ｂ……燃料噴出ノズル孔、５……予
混合気室、５Ｂ……前面板、６……保炎器、７
Ａ，７Ｂ……予混合気噴出ノズル孔。
FIG. 1 is a longitudinal sectional front view of the conventional example, FIG. 2 is a side view taken along the - line in FIG. 1, FIG. 3 is a longitudinal sectional front view of the present invention, and FIG. 4 is a side view taken along the - line in FIG. FIG. 5 is a cross-sectional side view taken along the line -- in FIG. 3. 1... Air guide vane, 2... Gap, 3... Fuel pipe, 4A, 4B... Fuel injection nozzle hole, 5... Premixture chamber, 5B... Front plate, 6... Flame stabilizer, 7
A, 7B... Premixture jet nozzle hole.
Claims (1)
の空気案内羽根を設け、該燃料管と該空気案内羽
根と前面板とにより予混合気室を形成し、前記空
気案内羽根の先端に保炎器を設けた装置におい
て、前記燃料管および前記前面板に穿設される燃
料噴出ノズル孔及び予混合気噴出ノズル孔を軸線
と平行に少なくとも２線以上の線上に千鳥足状に
配置したことを特徴とするガス焚きダクトバーナ
装置。1 A fuel pipe is provided with an air guide vane that widens toward the end through a slit-like gap, a premixture chamber is formed by the fuel pipe, the air guide vane, and a front plate, and a flame stabilizer is installed at the tip of the air guide vane. The apparatus is characterized in that fuel injection nozzle holes and premixture injection nozzle holes bored in the fuel pipe and the front plate are arranged in a staggered manner on at least two or more lines parallel to the axis. Gas-fired duct burner equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19757183A JPS6089611A (en) | 1983-10-24 | 1983-10-24 | Gas fuel duct burner device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19757183A JPS6089611A (en) | 1983-10-24 | 1983-10-24 | Gas fuel duct burner device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6089611A JPS6089611A (en) | 1985-05-20 |
| JPH0481082B2 true JPH0481082B2 (en) | 1992-12-22 |
Family
ID=16376711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19757183A Granted JPS6089611A (en) | 1983-10-24 | 1983-10-24 | Gas fuel duct burner device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6089611A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6468073B1 (en) * | 2001-06-12 | 2002-10-22 | Forney Corporation | Duct burner diffuser |
| FR3017445B1 (en) * | 2014-02-12 | 2019-05-24 | Fives Pillard | VEIN BURNER MODULE |
-
1983
- 1983-10-24 JP JP19757183A patent/JPS6089611A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6089611A (en) | 1985-05-20 |
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