JP3107214B2 - Combustion air supply device - Google Patents
Combustion air supply deviceInfo
- Publication number
- JP3107214B2 JP3107214B2 JP02158837A JP15883790A JP3107214B2 JP 3107214 B2 JP3107214 B2 JP 3107214B2 JP 02158837 A JP02158837 A JP 02158837A JP 15883790 A JP15883790 A JP 15883790A JP 3107214 B2 JP3107214 B2 JP 3107214B2
- Authority
- JP
- Japan
- Prior art keywords
- air
- combustion
- air supply
- supply device
- air passage
- 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 - Fee Related
Links
- 238000002485 combustion reaction Methods 0.000 title claims description 41
- 238000002347 injection Methods 0.000 claims description 12
- 239000007924 injection Substances 0.000 claims description 12
- 238000005192 partition Methods 0.000 claims description 3
- 239000000446 fuel Substances 0.000 description 8
- 239000007789 gas Substances 0.000 description 5
- 238000009841 combustion method Methods 0.000 description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 230000035515 penetration Effects 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000809 air pollutant Substances 0.000 description 1
- 231100001243 air pollutant Toxicity 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
Landscapes
- Air Supply (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ この発明は燃焼装置に対して燃焼用空気を供給する装
置に係り、特に二段燃焼を効果的に行い燃料の未燃分を
減少させる空気供給装置に関する。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for supplying combustion air to a combustion device, and particularly to air for effectively performing two-stage combustion and reducing unburned fuel content. It relates to a supply device.
［従来の技術］ 窒素酸化物（以下「NOX」と記す。）は大気汚染物質
の一つであり、各種燃焼装置においてもその排出量を可
能な限り低減する方法が試みられている。このNOX低減
方法に二段燃焼法および強化二段燃焼法をベースとした
炉内脱硝燃焼方法がある。[Prior Art] Nitrogen oxides (hereinafter referred to as “NO X ”) are one of air pollutants, and various combustion apparatuses have been trying to reduce their emission as much as possible. This NO X reduction method is based the furnace denitration combustion method a two-stage combustion method and reinforcing the two-stage combustion method.
第２図（ａ）は二段燃焼法を事業所用大型ボイラに実
施した場合を示し、ボイラ本体１の壁面1aに対して炉底
側から順にバーナ２、３、４およびアフタエアポート５
と称する空気供給装置が設置してある。このボイラ本体
１において、例えばバーナ２、３、４の空気比を1.0以
下として燃料の燃焼温度を低下させ、これによりいわゆ
るサーマルNOXの発生を防止し、次にこの低NOX燃焼によ
り生じた燃料の未燃分をアフタエアポート５から供給さ
れる燃焼用空気により燃焼させ、燃焼排ガス中の未燃分
含有量を減少させる。FIG. 2 (a) shows a case where the two-stage combustion method is applied to a large-scale boiler for business use, and the burners 2, 3, 4 and the after-air port 5 are arranged in order from the furnace bottom side with respect to the wall surface 1a of the boiler body 1.
There is an air supply device called. In this boiler body 1, for example, the air ratio of the burner 2, 3 and 4 to reduce the combustion temperature of the fuel as 1.0 or less, thereby preventing the occurrence of so-called thermal NO X, then caused by the low NO X combustion The unburned portion of the fuel is burned by the combustion air supplied from the after-air port 5 to reduce the unburned portion content in the combustion exhaust gas.
第２図（ｂ）は、この空気供給装置の構造を具体的に
示す断面図である。図中符号６は風箱でありこの風箱６
内には炉壁７に形成した空気口８の中心線９を中心とし
て放射状に複数枚の案内羽根10を取り付けた空気旋回器
11が設置してある。このアフタエアポート５において風
箱６に流入した燃焼用空気Ａは各案内羽根10の取り付け
角度を所定の値に設置しておくことにより、この空気旋
回器11で適当な旋回力が与えられ、火炉12に噴射され
る。図中符号13は案内羽根10の取り付け角度調節用ロッ
ド、14は各案内羽根10を接続するリンク、15はロッド回
転用ハンドルである。FIG. 2 (b) is a sectional view specifically showing the structure of the air supply device. In the figure, reference numeral 6 denotes a wind box.
Inside, an air swirler having a plurality of guide vanes 10 mounted radially around a center line 9 of an air port 8 formed in a furnace wall 7.
11 are installed. The combustion air A flowing into the wind box 6 at the after-air port 5 is provided with an appropriate swirling force by the air swirler 11 by setting the mounting angle of each guide blade 10 at a predetermined value. Injected into 12. In the figure, reference numeral 13 denotes a rod for adjusting the mounting angle of the guide blade 10, reference numeral 14 denotes a link for connecting each guide blade 10, and reference numeral 15 denotes a rod rotation handle.
以上の装置において、低NOX燃焼により生じた未燃分
を良好に燃焼させるには、当然のことながらこのアフタ
エアポート５から供給された燃焼用空気と低NOX燃焼に
よる排ガスもしくは火炎との混合が良好であることが前
提となる。In the above apparatus, in order to satisfactorily burn the unburned caused by low NO X combustion, of course mixing with the exhaust gas or flame with low NO X combustion and combustion air supplied from the after-air port 5 Is assumed to be good.
しかしながら、ボイラ本体１の火炉12は平面的には角
形状をしており、第２図（ｃ）に火炉12の横断面に示す
ようにアフタエアポート５を多数設置してもアフタエア
ポート５間、あるいは火炉12のコーナ部にはアフタエア
ポート５から供給される空気の隙間5aができてしまう。
このため燃焼ガスおよび火炎が激しい上昇力により隙間
5aを通過してしまい未燃分と空気の混合が大幅に低下す
る。つまり、隣接アフタエアポート５間に空気噴射がさ
れない隙間5aができるため未燃分燃焼の効率が低下す
る。However, the furnace 12 of the boiler body 1 has a square shape in plan view, and even if a large number of after-air ports 5 are installed as shown in the cross section of the furnace 12 in FIG. Alternatively, a gap 5 a of the air supplied from the after-air port 5 is formed at the corner of the furnace 12.
As a result, the combustion gas and flames are
After passing through 5a, the mixture of unburned components and air is greatly reduced. In other words, since there is a gap 5a between the adjacent after-air ports 5 where no air is injected, the efficiency of unburned combustion decreases.
このような状態は炉内脱硝のように空気比（空気過剰
率）を特に下げた燃焼バーナ段を設ける場合は煙色発生
等の原因となり、重大な問題があった。Such a state has a serious problem, for example, in the case of providing a combustion burner stage in which the air ratio (excess air ratio) is particularly low, such as denitration in a furnace, which causes generation of smoke color.
なお、空気噴射の隙間5aができないように大量の燃焼
用空気を供給することは未燃分燃焼の点からは効果的で
あるが、この燃焼の際に大量のNOXが発生するので好ま
しくない。Since it possible to supply a large amount of combustion air so that there is no gap 5a of the air injection is effective in terms of unburned combustion, a large amount of the NO X in the combustion occurs unfavorably .
上記欠点を改良するために、特開昭59−109714号には
第３図に記載した空気供給装置がある。第３図に示す空
気供給装置（アフタエアポート）５は直進空気流23用の
空気通路26と旋回流25用の空気通路27とからなるもの
で、空気通路26の空気流量をダンパ22で調整することで
火炉12の中心部と壁面部に供給する空気量を分配制御す
るものである。そのためアフタエアポート５間、あるい
は火炉12のコーナ部にはアフタエアポート５から供給さ
れる空気の隙間5a（第２図（ｃ））が発生しにくくな
る。In order to improve the above-mentioned disadvantage, Japanese Patent Application Laid-Open No. 59-109714 discloses an air supply device shown in FIG. The air supply device (after-air port) 5 shown in FIG. 3 comprises an air passage 26 for a straight air flow 23 and an air passage 27 for a swirl flow 25, and the air flow rate in the air passage 26 is adjusted by the damper 22. In this way, the amount of air supplied to the central portion and the wall portion of the furnace 12 is distribution-controlled. Therefore, a gap 5a (FIG. 2C) of the air supplied from the after-air port 5 is less likely to be generated between the after-air ports 5 or at a corner of the furnace 12.
［発明が解決しようとする課題］ しかしながら、前記特開昭59−109714号記載の発明で
も、燃料負荷が小さくなると、火炉12内に空気の隙間5a
が生じることがある。たとえば、燃料負荷が小さくなる
と空／燃比が低下し、アフタエアポート５の旋回流25部
分への空気流量が不足することがある。[Problems to be Solved by the Invention] However, even in the invention described in JP-A-59-109714, when the fuel load is reduced, the air gap 5a is formed in the furnace 12.
May occur. For example, when the fuel load is reduced, the air / fuel ratio is reduced, and the air flow to the swirl flow 25 of the after-airport 5 may be insufficient.
本発明の目的は、上述した問題点に鑑み、燃料負荷に
大きな変動があっても、常時空気の燃料隙間を少なく
し、燃焼用空気と未燃分との混合が良好に行える空気供
給装置を提供することにある。In view of the above-described problems, an object of the present invention is to provide an air supply device that can always reduce the fuel gap of air even when the fuel load fluctuates greatly, and can mix combustion air and unburned components satisfactorily. To provide.
［課題を解決するための手段］ 本発明の上記目的は次の構成により達成される。[Means for Solving the Problems] The above object of the present invention is achieved by the following configurations.
すなわち、燃焼装置内の火炎および排ガス流れの下流
側において燃焼用空気を供給し、火炎および排ガス中に
含有される未燃分を燃焼させる燃焼用空気供給装置にお
いて、燃焼装置の炉壁に開口した空気供給口に臨んだ風
箱内に中心空気通路およびこの中心空気通路と同一軸心
状に二つの環状空気通路を形成し、該二つの環状空気通
路を仕切る仕切部材の炉壁側の先端部と前記炉壁の空気
供給口の端部は共に同一方向に略同一角度で拡開する構
成を備え、空気供給量のいかんに係りなく常時高い空気
噴射速度を確保し、また燃焼装置内での空気の噴射隙間
をなくすために各空気供給口に供給する空気流量を相互
に関連付けながら調整する空気流通制御手段を各空気通
路入口に取り付けた燃焼用空気供給装置である。That is, in the combustion air supply device for supplying combustion air downstream of the flow of the flame and the exhaust gas in the combustion device and burning unburned components contained in the flame and the exhaust gas, the combustion air supply device was opened to the furnace wall of the combustion device. A central air passage and two annular air passages formed coaxially with the central air passage in the wind box facing the air supply port, and a tip end on the furnace wall side of a partition member that separates the two annular air passages And the end of the air supply port of the furnace wall are both expanded in the same direction at substantially the same angle, always ensuring a high air injection speed regardless of the amount of air supply, and in the combustion device. This is a combustion air supply device in which air flow control means for adjusting the flow rate of air supplied to each air supply port in association with each other in order to eliminate an air injection gap is attached to each air passage inlet.
［作用］ 少なくとも大口径部、中口径部、小口径部の三段に同
軸心環状に形成された空気供給口は、空気供給量の変化
に対応して使用すべき空気供給口を変え、空気供給量の
いかんに係りなく常時高い空気噴射速度を確保し、また
各空気供給口に供給する空気量の調整が可能なため、空
気の噴射隙間をなくすことができる。[Operation] At least three large-diameter, medium-diameter, and small-diameter air supply ports formed in a coaxial annular shape change the air supply port to be used in response to a change in the air supply amount. Regardless of the supply amount, a high air injection speed is always ensured, and the amount of air supplied to each air supply port can be adjusted, so that the air injection gap can be eliminated.
［実施例］ 以下、この発明の実施例について説明する。[Example] Hereinafter, an example of the present invention will be described.
第１図（ａ）に空気供給装置５の断面図を示す。空気
供給装置５の中心部には筒体31が配置され、その開口端
は空気流の貫通力を増すために絞り構造35とし、炉壁７
に設けた空気口８のほぼ中心に位置するよう配置する。
この筒体31の他端は空気量調節用スリープ33および該ス
リープ33操作用の操作ハンドル34が取り付けてあり、第
一次空気通路32を形成している。筒体16は筒体31に支持
され、筒体31と同一軸心上に環状に配置されている。筒
体16の先端部は空気流の旋回力を高めるために、空気口
８の開口角度とほぼ同等の角度を有し、同一方向に拡開
したガイドスリーブ29をもっている。この筒体16の他端
には支持板17が取り付けられており、この支持板17と筒
体31に支持された支持端板18の間には第二次空気通路25
が形成され、かつその通路25の入口部には複数枚の案内
羽根19が筒体31および筒体16により形成される第二次空
気流路25の中心軸線を中心として放射状に配置してあ
る。そして、案内羽根19はロッド20に取り付けられてお
り、このロッド20は筒体16の同軸方向に支持板17と支持
端板18とを貫通し、空気供給装置に取り付けられる。ロ
ッド20は空気供給装置５の外部から操作可能なハンドル
21を有している。上記案内羽根19の取付角度はハンドル
21で調節可能になっている。FIG. 1A shows a cross-sectional view of the air supply device 5. A cylindrical body 31 is disposed at the center of the air supply device 5, and the opening end thereof has a throttle structure 35 to increase the penetration force of the air flow.
Is disposed so as to be located substantially at the center of the air port 8 provided in the above.
The other end of the cylindrical body 31 is provided with a sleep 33 for adjusting the amount of air and an operation handle 34 for operating the sleep 33 to form a primary air passage 32. The cylinder 16 is supported by the cylinder 31 and is annularly arranged on the same axis as the cylinder 31. The tip of the cylindrical body 16 has a guide sleeve 29 which has an angle substantially equal to the opening angle of the air port 8 and is expanded in the same direction in order to increase the turning force of the air flow. A support plate 17 is attached to the other end of the cylinder 16, and a secondary air passage 25 is provided between the support plate 17 and a support end plate 18 supported by the cylinder 31.
Are formed, and a plurality of guide blades 19 are radially arranged around the central axis of the secondary air flow path 25 formed by the cylindrical body 31 and the cylindrical body 16 at the entrance of the passage 25. . The guide blade 19 is attached to a rod 20, which penetrates the support plate 17 and the support end plate 18 in the coaxial direction of the cylinder 16, and is attached to the air supply device. The rod 20 is a handle that can be operated from outside the air supply device 5
Has 21. The mounting angle of the guide vane 19 is the handle
21 is adjustable.
次に炉壁７の風箱６側壁面には空気口８とほぼ同一の
径を有するノズル体22が形成してあり、このノズル体22
と筒体16の外周に形成され、筒体16の半径方向に取り付
けられた支持板23との間には第三次空気通路24を環状に
形成してある。この第三次空気通路24の入口部には案内
羽根26が複数枚配置されており、前述の案内羽根19と同
様、ノズル体22と筒体16から形成される第三次空気流路
24の中心軸線を中心として放射状に配置してある。これ
ら案内羽根26の取付角度は空気供給装置５を貫通して取
り付けられたロッド27のハンドル28で調節される。Next, a nozzle body 22 having substantially the same diameter as the air port 8 is formed on the side wall surface of the wind box 6 of the furnace wall 7.
A tertiary air passage 24 is formed in an annular shape between the outer peripheral surface of the cylindrical body 16 and a support plate 23 attached in the radial direction of the cylindrical body 16. A plurality of guide vanes 26 are arranged at the inlet of the tertiary air passage 24, and a tertiary air passage formed by the nozzle body 22 and the cylindrical body 16 like the guide vane 19 described above.
It is arranged radially around 24 central axes. The mounting angle of these guide vanes 26 is adjusted by a handle 28 of a rod 27 mounted through the air supply device 5.
以上の装置において、燃焼装置の負荷が比較的少ない
場合には案内羽根26の取り付け角を変えて第三次空気通
路24を閉じ、空気調整スリーブ33と案内羽根19を開く。
これにより燃焼用空気Ａは全て第二次空気通路25および
第一次空気通路32に至り空気口８よりも小径の筒体16、
31から高速で噴射する。このとき第二次空気通路25内か
らの空気はガイドスリーブ29との関連で炉壁に添って広
角の空気流となる。第１図（ｃ）にその様子を示す。こ
のため、燃焼用空気Ａは噴射量が少ない割には高い貫通
力を有し、火炎および排ガスの激しい上昇流内に吹き込
み未燃分と良好に混合する。同時に、噴射量が少ない割
には第二次空気通路25内からの空気は炉壁に添った広角
の空気流となるため、空気噴流の隙間5a（第２図（ｃ）
参照）は生じない。In the above device, when the load on the combustion device is relatively small, the mounting angle of the guide blade 26 is changed to close the tertiary air passage 24, and the air adjustment sleeve 33 and the guide blade 19 are opened.
As a result, all the combustion air A reaches the secondary air passage 25 and the primary air passage 32, and the cylindrical body 16 having a smaller diameter than the air port 8,
Inject at high speed from 31. At this time, the air from inside the secondary air passage 25 forms a wide-angle airflow along the furnace wall in relation to the guide sleeve 29. FIG. 1 (c) shows the situation. For this reason, the combustion air A has a high penetration force in spite of the small injection amount, and is blown into the violent upward flow of the flame and the exhaust gas and is mixed well with the unburned components. At the same time, although the injection amount is small, the air from inside the secondary air passage 25 becomes a wide-angle air flow along the furnace wall, so that the air jet gap 5a (FIG. 2 (c))
Does not occur).
次に燃焼装置の負荷が大きく空気の隙間5aができる場
合等には、第一次空気通路32の空気調整スリーブ33を開
き、第二次空気通路25の案内羽根19も開とし、筒体16、
31から高い貫通力を有する空気を噴射させるほか、案内
羽根26も開とし、第三次空気通路24からも燃焼用空気を
噴射する。この場合第三次空気通路24から噴射される空
気は環状の噴射口から炉内に噴射され、ガイドスリープ
29との関係で拡散力が高くなり、空気噴流の隙間5aは生
じない。Next, when the load of the combustion device is large and an air gap 5a is formed, the air adjusting sleeve 33 of the primary air passage 32 is opened, the guide blade 19 of the secondary air passage 25 is also opened, and the cylindrical body 16 is opened. ,
In addition to injecting air having a high penetration force from 31, the guide blade 26 is also opened, and combustion air is also injected from the tertiary air passage 24. In this case, the air injected from the tertiary air passage 24 is injected into the furnace from the annular injection port, and the guide sleep
The diffusing force is increased in relation to 29, and the air jet gap 5a does not occur.
低負荷時において、燃焼用空気Ａの噴射量が少なく空
気噴射の隙間5aが大きい場合は、高い拡散力が必要なた
め案内羽根19を閉として第二次空気通路25からの空気の
供給をやめ、第一次空気通路32と第三次空気通路24から
燃焼用空気を供給してもよい。第１図（ｂ）にその様子
を示す。At a low load, when the injection amount of the combustion air A is small and the gap 5a of the air injection is large, the guide blade 19 is closed and the supply of air from the secondary air passage 25 is stopped because a high diffusion force is required. Alternatively, combustion air may be supplied from the primary air passage 32 and the tertiary air passage 24. FIG. 1B shows this state.
［発明の効果］ この発明を実施することにより燃焼装置の負荷に係り
なく、常時燃焼用空気の噴射力を高く保持でき、また拡
散力を強く保持できるので燃焼装置内に空気の隙間はで
きず、未燃分を良好に燃焼でき、低NOX化を達成できる
と共に未燃分の排出量を大幅に低減することができる。[Effects of the Invention] By practicing the present invention, regardless of the load on the combustion device, it is possible to always maintain a high injection force of the combustion air and a high diffusion force, so that no air gap is formed in the combustion device. , unburned be satisfactorily combusted, it is possible to significantly reduce the emission of unburned together can achieve low NO X reduction.
第１図（ａ）は本発明に係る空気供給装置の断面図、第
１図（ｂ）はその空気供給装置による空気流れの様子を
示し、第二次空気通路を絞った状態を示す。第１図
（ｃ）は第三次空気通路を絞った状態を示す。第２図
（ａ）は二段燃焼の状態を示すボイラの断面図、第２図
（ｂ）は従来の空気供給装置の断面図、第２図（ｃ）は
従来の空気供給装置による火炉への空気流れの様子を示
す。第３図は従来の空気供給装置の断面図である。 ５……空気供給装置、６……風箱、７……炉壁、８……
空気供給口、19、26……案内羽根、32……第一次空気通
路（環状空気通路）、25……第二次空気通路（環状空気
通路）、24……第三次空気通路（中心空気通路）、33…
…空気調整スリーブFIG. 1 (a) is a cross-sectional view of an air supply device according to the present invention, and FIG. 1 (b) shows a state of air flow by the air supply device, showing a state where a secondary air passage is narrowed. FIG. 1C shows a state where the tertiary air passage is narrowed. 2 (a) is a sectional view of a boiler showing a state of two-stage combustion, FIG. 2 (b) is a sectional view of a conventional air supply device, and FIG. 2 (c) is a furnace using a conventional air supply device. The state of the air flow of is shown. FIG. 3 is a sectional view of a conventional air supply device. 5 ... air supply device, 6 ... wind box, 7 ... furnace wall, 8 ...
Air supply ports, 19, 26 ... Guide vane, 32 ... Primary air passage (annular air passage), 25 ... Secondary air passage (annular air passage), 24 ... Tertiary air passage (center) Air passage), 33 ...
... Air adjustment sleeve
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平１−167514（ＪＰ，Ａ) 実公 平２−9204（ＪＰ，Ｙ２) ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-1-167514 (JP, A) JP-A-2-9204 (JP, Y2)
Claims (1)
側において燃焼用空気を供給し、火炎および排ガス中に
含有される未燃分を燃焼させる燃焼用空気供給装置にお
いて、 燃焼装置の炉壁に開口した空気供給口に臨んだ風箱内に
中心空気通路およびこの中心空気通路と同一軸心状に二
つの環状空気通路を形成し、該二つの環状空気通路を仕
切る仕切部材の炉壁側の先端部と前記炉壁の空気供給口
の端部は共に同一方向に略同一角度で拡開する構成を備
え、空気供給量のいかんに係りなく常時高い空気噴射速
度を確保し、また燃焼装置内での空気の噴射隙間をなく
すために各空気供給口に供給する空気流量を相互に関連
付けながら調整する空気流通制御手段を各空気通路入口
に取り付けたことを特徴とする燃焼用空気供給装置。1. A combustion air supply device for supplying combustion air downstream of a flow of a flame and exhaust gas in a combustion device to burn unburned components contained in the flame and the exhaust gas. A central air passage and two annular air passages formed coaxially with the central air passage in the wind box facing the air supply opening opened at the furnace wall side of the partition member that partitions the two annular air passages The tip of the furnace and the end of the air supply port of the furnace wall are both expanded at substantially the same angle in the same direction, ensuring a high air injection speed at all times regardless of the amount of air supply. An air supply device for combustion, characterized in that air flow control means for adjusting the flow rate of air supplied to each air supply port in association with each other in order to eliminate a gap for jetting air inside the air passage is provided at each air passage inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP02158837A JP3107214B2 (en) | 1990-06-19 | 1990-06-19 | Combustion air supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP02158837A JP3107214B2 (en) | 1990-06-19 | 1990-06-19 | Combustion air supply device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0452414A JPH0452414A (en) | 1992-02-20 |
| JP3107214B2 true JP3107214B2 (en) | 2000-11-06 |
Family
ID=15680483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP02158837A Expired - Fee Related JP3107214B2 (en) | 1990-06-19 | 1990-06-19 | Combustion air supply device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3107214B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2005229668B2 (en) | 2004-11-04 | 2008-03-06 | Babcock-Hitachi K.K. | Overfiring air port, method for manufacturing air port, boiler, boiler facility, method for operating boiler facility and method for improving boiler facility |
| JP4664179B2 (en) * | 2005-10-17 | 2011-04-06 | バブコック日立株式会社 | Boiler equipment, boiler equipment operation method, and boiler equipment repair method |
| JP2011058737A (en) | 2009-09-11 | 2011-03-24 | Babcock Hitachi Kk | Pulverized coal burning boiler |
| JP5530373B2 (en) | 2011-01-12 | 2014-06-25 | バブコック日立株式会社 | Boiler equipment |
| JP6203033B2 (en) * | 2013-12-17 | 2017-09-27 | 三菱日立パワーシステムズ株式会社 | boiler |
-
1990
- 1990-06-19 JP JP02158837A patent/JP3107214B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0452414A (en) | 1992-02-20 |
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