JPH102508A - Superheater - Google Patents
SuperheaterInfo
- Publication number
- JPH102508A JPH102508A JP15124396A JP15124396A JPH102508A JP H102508 A JPH102508 A JP H102508A JP 15124396 A JP15124396 A JP 15124396A JP 15124396 A JP15124396 A JP 15124396A JP H102508 A JPH102508 A JP H102508A
- Authority
- JP
- Japan
- Prior art keywords
- furnace
- combustion
- heat transfer
- superheater
- combustion gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、通常発電やその他
の所要蒸気の利用効率を改善するため、飽和蒸気などを
過熱して蒸気条件を改善するための過熱器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a superheater for improving steam conditions by superheating saturated steam or the like in order to improve the efficiency of ordinary power generation and other required steam use.
【0002】[0002]
【従来の技術】例えば、電力会社から電力の供給を受け
るとき、2,000kw未満の場合は、『高圧乙』の種
類になるが、2,000kwを超えると、『特別高圧』
になり、費用がかかる。そこで、自家発電も考えられる
が、自前のボイラの飽和蒸気では、発電効率が劣るの
で、蒸気の質を改善する必要がある。蒸気の質を改善す
る設備として過熱器がある。2. Description of the Related Art For example, when power is supplied from an electric power company, if the power is less than 2,000 kW, the type is "high-voltage power supply".
Costly. Therefore, in-house power generation is conceivable, but it is necessary to improve the quality of the steam because the power generation efficiency is poor with the saturated steam of the own boiler. There is a superheater as equipment for improving the quality of steam.
【0003】図4に示すように、従来の独立過熱器1、
即ち、蒸気発生器を持たないで、飽和蒸気の過熱のみを
行う熱交換器2は、過熱器排ガスGを再循環して燃焼炉
3内の温度を希釈する再循環ブロアー4が必要である。
更に、燃焼空気Aを排ガスGで昇温させるための空気予
熱器5、例えば、多管式空気予熱器又は回転式蓄熱型空
気予熱器(例えば、ユングストローム式)が必要であ
り、いずれも大掛かりな設備になっていた。なお、図
中、Fは、燃料を示している。As shown in FIG. 4, a conventional independent superheater 1,
That is, the heat exchanger 2 that does not have a steam generator and performs only superheating of the saturated steam requires the recirculation blower 4 that recirculates the superheater exhaust gas G and dilutes the temperature in the combustion furnace 3.
Further, an air preheater 5 for raising the temperature of the combustion air A with the exhaust gas G, for example, a multi-tube air preheater or a rotary regenerative air preheater (for example, a Jungstrom type) is required, and both are large-scale. Facilities. In addition, in the figure, F has shown the fuel.
【0004】[0004]
【発明が解決しようとする課題】本発明は、かかる従来
の問題に鑑みてなされたものであり、その目的とすると
ころは、周辺機器が少なく、コンパクトで、設置費用も
少なくて済む過熱器を提供することにある。SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to provide a superheater which requires less peripheral equipment, is compact, and requires less installation cost. To provide.
【0005】[0005]
【課題を解決するための手段】即ち、本発明の過熱器
は、火炉の周囲に多数の伝熱管を配設すると共に、火炉
と伝熱管群との間に耐火断熱壁を設けた過熱器本体に、
前記火炉に臨むようにハイサイクル蓄熱式燃焼バーナー
を設け、かつ、前記耐火断熱壁に、前記燃焼バーナーの
燃焼ガスが火炉から伝熱管群域内に流入する燃焼ガス流
入口と、前記伝熱管群域から前記火炉内に戻る燃焼ガス
流出口を設けている。That is, a superheater according to the present invention comprises a superheater body having a large number of heat transfer tubes disposed around a furnace and a refractory heat insulating wall provided between the furnace and the heat transfer tube group. To
A high-cycle regenerative combustion burner is provided so as to face the furnace, and, on the refractory insulating wall, a combustion gas inlet through which combustion gas of the combustion burner flows from the furnace into the heat transfer tube group, and the heat transfer tube group. And a combustion gas outlet for returning from the furnace to the furnace.
【0006】また、本発明にあっては、燃焼ガス流出口
を燃焼バーナーの近傍に配設させ、燃焼ガス流入口を燃
焼バーナーの遠方に配設させている。更に、ハイサイク
ル蓄熱型燃焼バーナーは、蓄熱器及び燃焼バーナーを有
する第1,第2の2系統の燃焼器と、第1,第2の2系
統の燃焼器に燃焼用空気を供給する空気配管と、該空気
配管の端部に設けた4方バルブと、該4方バルブと前記
第1,第2の2系統の燃焼器に夫々連通する連通管から
構成されている。Further, in the present invention, the combustion gas outlet is arranged near the combustion burner, and the combustion gas inlet is arranged far from the combustion burner. Further, the high-cycle regenerative combustion burner includes a first and second two-system combustor having a regenerator and a combustion burner, and an air pipe for supplying combustion air to the first and second two-system combustor. And a four-way valve provided at an end of the air pipe, and a communication pipe communicating with the four-way valve and the first and second two combustors, respectively.
【0007】[0007]
【発明の実施の形態】以下、図面を参照しながら本発明
の実施の形態について説明する。図1において、10
は、過熱器本体であり、その中心部に位置する火炉11
の周囲に、該火炉11を囲むように、多数の伝熱管12
を設けている。そして、伝熱管12の焼損を防ぐため
に、火炉11と伝熱管群12aとの間に耐火断熱壁13
を設けている。また、過熱器本体10の上下両端部に
は、蒸気ヘッダー14,15が設けられており、下部蒸
気ヘッダー14に飽和蒸気S1 が供給され、上部蒸気ヘ
ッダー15から過熱蒸気S2 が取り出されるようになっ
ている。Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, 10
Denotes a superheater body, and a furnace 11 located at the center thereof.
Around the furnace 11 so as to surround the furnace 11
Is provided. Then, in order to prevent the heat transfer tubes 12 from being burned, the refractory insulation wall 13 is placed between the furnace 11 and the heat transfer tube group 12a.
Is provided. Further, steam headers 14 and 15 are provided at both upper and lower ends of the superheater main body 10 so that the saturated steam S 1 is supplied to the lower steam header 14 and the superheated steam S 2 is extracted from the upper steam header 15. It has become.
【0008】また、過熱器本体10の上部に、火炉11
に臨むように、ハイサイクル蓄熱式燃焼バーナー20を
取り付けている。このハイサイクル蓄熱式燃焼バーナー
20は、図2のように、蓄熱器21及び燃焼バーナー2
2を有する第1系統の燃焼器23と、蓄熱器24及び燃
焼バーナー25を有する第2系統の燃焼器26と、この
第1系統の燃焼器23及び第2系統の燃焼器26に燃焼
用空気Aを供給する空気配管27と、空気配管27の端
部に設けられた4方バルブ28と、4方バルブ28と第
1系統の燃焼器23及び第2系統の燃焼器26とを夫々
連通する連通管29,30から構成されている。Further, a furnace 11 is provided above the superheater body 10.
The high-cycle regenerative combustion burner 20 is attached so as to face. As shown in FIG. 2, the high cycle regenerative combustion burner 20 includes a regenerator 21 and a combustion burner 2.
2, a second system combustor 26 having a regenerator 24 and a combustion burner 25, and combustion air is supplied to the first system combustor 23 and the second system combustor 26. A air pipe 27 for supplying A, a four-way valve 28 provided at an end of the air pipe 27, and the four-way valve 28 communicate with the first system combustor 23 and the second system combustor 26, respectively. It is composed of communication pipes 29 and 30.
【0009】第1,2系統の燃焼器23,26の先端部
23a,26aの断面積aを蓄熱器21,24の断面積
bより小さくし、燃焼器23,26から火炉11内へ噴
出する燃焼ガスの流速を高めるようになっている。但
し、先端部11の断面積aを、あまり小さくすると、火
炉11から第1,2系統の燃焼器23,26への燃焼ガ
スの戻りに支障を起こす恐れがある。The cross-sectional areas a of the tips 23a and 26a of the first and second combustors 23 and 26 are made smaller than the cross-sectional areas b of the regenerators 21 and 24, and are ejected from the combustors 23 and 26 into the furnace 11. The flow rate of the combustion gas is increased. However, if the cross-sectional area a of the tip portion 11 is too small, there is a possibility that the return of the combustion gas from the furnace 11 to the first and second combustors 23 and 26 may be hindered.
【0010】また、上記耐火断熱壁13の下端部に燃焼
ガス流入孔16が設けられ、上端部に燃焼ガス流出孔1
7が設けられている。次に、上記過熱器の作用について
説明する。過熱器本体10に設けた第1系統の燃焼バー
ナー22に供給された燃料、例えば、天然ガスF1 は、
空気配管27、4方バルブ28及び連通管29を経て第
1系統の燃焼器23に流入し、蓄熱器21で高温に加熱
された燃焼用空気Aと混合して燃焼する。そして、この
高温(1350℃)の燃焼ガスGは、燃焼器23の先端
部23aを通って火炉11内に噴出される。火炉11内
の温度は、図3に示すように、耐火断熱壁13を介して
伝熱管12へ伝わる輻射伝熱とのバランスによって決定
される。A combustion gas inflow hole 16 is provided at a lower end of the refractory heat insulating wall 13, and a combustion gas outflow hole 1 is provided at an upper end.
7 are provided. Next, the operation of the superheater will be described. The fuel, for example, natural gas F 1 supplied to the first-system combustion burner 22 provided in the superheater main body 10 is
The air flows into the first system combustor 23 through the air pipe 27, the four-way valve 28, and the communication pipe 29, and is mixed with the combustion air A heated to a high temperature by the regenerator 21 and burned. Then, the high-temperature (1350 ° C.) combustion gas G is ejected into the furnace 11 through the tip 23 a of the combustor 23. As shown in FIG. 3, the temperature in the furnace 11 is determined by the balance with the radiant heat transfer transmitted to the heat transfer tube 12 through the refractory heat insulating wall 13.
【0011】そして、耐火断熱壁13に沿って火炉11
内を流下した燃焼ガスGは、火炉11の下端部にある燃
焼ガス流入孔16から伝熱管群域18内に流入した後、
伝熱管12に沿って上昇し、その間に伝熱管12内の飽
和蒸気S1 を加熱して過熱蒸気S2 に変換させる。そし
て、耐火断熱壁13の上端部にある燃焼ガス流出孔17
から火炉11を経て第2系統の燃焼器26内に流入し、
その蓄熱器24に蓄熱した後、例えば、150℃の低温
排ガスG′になって連通管30、4方バルブ28を経て
系外に排出される。Then, the furnace 11 is moved along the refractory heat insulating wall 13.
The combustion gas G that has flowed down into the heat transfer tube group area 18 from the combustion gas inflow hole 16 at the lower end of the furnace 11,
Rises along the heat transfer tube 12, is converted into superheated steam S 2 by heating the saturated steam S 1 of the heat transfer tube 12 therebetween. Then, the combustion gas outlet hole 17 at the upper end of the refractory heat insulating wall 13 is formed.
From the furnace 11 through the furnace 11 into the second combustor 26,
After the heat is stored in the regenerator 24, the low-temperature exhaust gas G 'of, for example, 150.degree.
【0012】一方、第2系統の燃焼器26が稼働すると
きは、4方バルブ28が切り換えられ、燃焼バーナー2
5に供給された天然ガスF1 は、空気配管27、4方バ
ルブ28及び連通管30を経て第2系統の燃焼器26に
流入し、ガスタービン排ガスG1 及び第1系統の燃焼器
23の燃焼ガスGを蓄熱した蓄熱器24で高温、例え
ば、800℃まで加熱された燃焼用空気Aと混合して燃
焼する。On the other hand, when the second system combustor 26 operates, the four-way valve 28 is switched, and the combustion burner 2
The natural gas F 1 supplied to the gas turbine 5 flows into the second system combustor 26 through the air pipe 27, the four-way valve 28 and the communication pipe 30, and flows into the gas turbine exhaust gas G 1 and the first system combustor 23. The combustion gas G is mixed with the combustion air A heated to a high temperature, for example, 800 ° C., in the regenerator 24 storing the combustion gas G and burned.
【0013】このとき発生する燃焼ガスGは、火炉11
に沿って流下した後、火炉11の下端部にある燃焼ガス
流入孔16から伝熱管群域18内に流入して伝熱管12
内の飽和蒸気S1 を加熱して過熱蒸気S2 に変換する。
そして、蓄熱器21を加熱した後、連通管19、4方バ
ルブ18を経て系外に排出される。以下、インターバ
ル、例えば、20〜30秒間隔で第1系統の燃焼器23
と第2系統の燃焼器26との燃焼が相互に切り換えら
れ、火炉11内に高温場を形成する。The combustion gas G generated at this time is supplied to the furnace 11
After flowing down, heat flows into the heat transfer tube group area 18 through the combustion gas inflow hole 16 at the lower end of the furnace 11 and flows into the heat transfer tube 12.
Converting the saturated steam S 1 of the inner to the superheated steam S 2 heating.
Then, after the regenerator 21 is heated, it is discharged out of the system through the communication pipe 19 and the four-way valve 18. Hereinafter, at intervals, for example, at intervals of 20 to 30 seconds, the first system combustor 23
And the combustion of the second combustor 26 are switched with each other, and a high temperature field is formed in the furnace 11.
【0014】上記のように、ハイサイクル蓄熱型燃焼バ
ーナー20を用いた過熱器本体10の火炉11内は、温
度が高いので、過熱器本体10内の伝熱面をコンパクト
化することができる。因に、図5は、本発明にかかる過
熱器の熱流パターンを示し、図6は、従来の過熱器の熱
流パターンを示している。As described above, since the temperature inside the furnace 11 of the superheater body 10 using the high-cycle regenerative combustion burner 20 is high, the heat transfer surface in the superheater body 10 can be made compact. FIG. 5 shows a heat flow pattern of the superheater according to the present invention, and FIG. 6 shows a heat flow pattern of the conventional superheater.
【0015】ここで、図5中のターミナル温度t1 ,t
2 ,t3 ,t4 で囲まれた面積イと、図6中のターミナ
ル温度t1 ′,t2 ′,t3 ′,t4 ′で囲まれた面積
ロとを比較すると、前者の方が後者よりも大きいから、
その分、過熱器内の伝熱面積をコンパクトにできること
が分かる。Here, the terminal temperatures t 1 and t in FIG.
2, and t 3, the area i surrounded by t 4, the terminal temperature t 1 in FIG. 6 ', t 2', t 3 ', t 4' is compared with the area B surrounded by, the former Is larger than the latter,
It can be seen that the heat transfer area in the superheater can be reduced accordingly.
【0016】[0016]
【発明の効果】上記のように、本発明によれば、過熱器
の伝熱面積を従来よりも小さくすることができるように
なった。従って、設備費用も少なくて済むようになっ
た。As described above, according to the present invention, the heat transfer area of the superheater can be made smaller than before. Accordingly, the equipment cost has been reduced.
【図1】本発明にかかる蒸気過熱器の概略図である。FIG. 1 is a schematic view of a steam superheater according to the present invention.
【図2】本発明にかかる蒸気過熱器の要部拡大詳細図で
ある。FIG. 2 is an enlarged detailed view of a main part of the steam superheater according to the present invention.
【図3】耐火材と蒸気管の熱伝達パターン説明図であ
る。FIG. 3 is an explanatory diagram of a heat transfer pattern between a refractory material and a steam pipe.
【図4】従来の蒸気過熱器の概略図である。FIG. 4 is a schematic view of a conventional steam superheater.
【図5】本発明にかかる蒸気過熱器の熱流パターンであ
る。FIG. 5 is a heat flow pattern of the steam superheater according to the present invention.
【図6】従来の蒸気過熱器の熱流パターンである。FIG. 6 is a heat flow pattern of a conventional steam superheater.
10 過熱器本体 11 火炉 12 伝熱管 12a 伝熱
管群 13 耐火断熱壁 16 燃焼ガ
ス流入口 17 燃焼ガス流出口 18 伝熱管
群域 20 ハイサイクル蓄熱式燃焼バーナー G 燃焼ガ
スDESCRIPTION OF SYMBOLS 10 Superheater main body 11 Furnace 12 Heat transfer tube 12a Heat transfer tube group 13 Fireproof heat insulation wall 16 Combustion gas inlet 17 Combustion gas outlet 18 Heat transfer tube group area 20 High cycle regenerative combustion burner G Combustion gas
───────────────────────────────────────────────────── フロントページの続き (72)発明者 田中 良一 横浜市鶴見区尻手二丁目1番53号 日本フ ァーネス工業株式会社内 (72)発明者 保田 力 横浜市鶴見区尻手二丁目1番53号 日本フ ァーネス工業株式会社内 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Ryoichi Tanaka, Inventor 2-1-1, Shirite, Tsurumi-ku, Yokohama-shi Inside Japan Finance Corporation (72) Inventor Riki Yasuda 2-53, Shirate, Tsurumi-ku, Yokohama-shi Nippon Gas Industry Co., Ltd.
Claims (3)
共に、火炉と伝熱管群との間に耐火断熱壁を設けた過熱
器本体に、前記火炉に臨むようにハイサイクル蓄熱式燃
焼バーナーを設け、かつ、前記耐火断熱壁に、前記燃焼
バーナーの燃焼ガスが火炉から伝熱管群域内に流入する
燃焼ガス流入口と、前記伝熱管群域から前記火炉内に戻
る燃焼ガス流出口を設けた過熱器。1. A high-cycle regenerative combustion system in which a large number of heat transfer tubes are provided around a furnace and a superheater body provided with a refractory heat insulating wall between the furnace and the heat transfer tube group so as to face the furnace. A burner is provided, and on the refractory insulation wall, a combustion gas inlet through which combustion gas of the combustion burner flows from the furnace into the heat transfer tube group area, and a combustion gas outlet from the heat transfer tube group area into the furnace. Superheater provided.
配設させ、燃焼ガス流入口を燃焼バーナーから遠方に配
設させた請求項1記載の過熱器。2. The superheater according to claim 1, wherein the combustion gas outlet is disposed near the combustion burner, and the combustion gas inlet is disposed far from the combustion burner.
熱器及び燃焼バーナーを有する第1,第2の2系統の燃
焼器と、第1,第2の2系統の燃焼器に燃焼用空気を供
給する空気配管と、該空気配管の端部に設けた4方バル
ブと、該4方バルブと前記第1,第2の2系統の燃焼器
に夫々連通する連通管から構成した請求項1又は2記載
の過熱器。3. A high-cycle regenerative combustion burner for supplying combustion air to first and second two-stage combustors having a regenerator and a combustion burner and first and second two-line combustors. 3. An air pipe comprising: an air pipe, a four-way valve provided at an end of the air pipe, and a communication pipe communicating with the four-way valve and the first and second combustors. Superheater as described.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15124396A JPH102508A (en) | 1996-06-12 | 1996-06-12 | Superheater |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15124396A JPH102508A (en) | 1996-06-12 | 1996-06-12 | Superheater |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH102508A true JPH102508A (en) | 1998-01-06 |
Family
ID=15514398
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15124396A Withdrawn JPH102508A (en) | 1996-06-12 | 1996-06-12 | Superheater |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH102508A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4831823A (en) * | 1987-02-24 | 1989-05-23 | Yamada Hatsudoki Kabushiki Kaisha | Exhaust gas control means for motorcycle and the like |
KR100363719B1 (en) * | 2000-04-22 | 2002-12-05 | 박용희 | Spiral Wound Heat Transferring Equipment on the Single Passage for the Super-heater |
-
1996
- 1996-06-12 JP JP15124396A patent/JPH102508A/en not_active Withdrawn
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4831823A (en) * | 1987-02-24 | 1989-05-23 | Yamada Hatsudoki Kabushiki Kaisha | Exhaust gas control means for motorcycle and the like |
KR100363719B1 (en) * | 2000-04-22 | 2002-12-05 | 박용희 | Spiral Wound Heat Transferring Equipment on the Single Passage for the Super-heater |
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