JPH0617650B2 - Gas turbine exhaust gas treatment method - Google Patents
Gas turbine exhaust gas treatment methodInfo
- Publication number
- JPH0617650B2 JPH0617650B2 JP63285688A JP28568888A JPH0617650B2 JP H0617650 B2 JPH0617650 B2 JP H0617650B2 JP 63285688 A JP63285688 A JP 63285688A JP 28568888 A JP28568888 A JP 28568888A JP H0617650 B2 JPH0617650 B2 JP H0617650B2
- Authority
- JP
- Japan
- Prior art keywords
- exhaust gas
- gas
- boiler
- gas turbine
- air
- 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
- 238000000034 method Methods 0.000 title claims description 9
- 239000007789 gas Substances 0.000 claims description 140
- 238000002485 combustion reaction Methods 0.000 claims description 20
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 16
- 239000001301 oxygen Substances 0.000 claims description 16
- 229910052760 oxygen Inorganic materials 0.000 claims description 16
- 239000000446 fuel Substances 0.000 claims description 14
- 230000000717 retained effect Effects 0.000 claims description 9
- 239000000567 combustion gas Substances 0.000 claims description 5
- 238000003672 processing method Methods 0.000 claims 1
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 238000011084 recovery Methods 0.000 description 5
- 239000003245 coal Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000002918 waste heat Substances 0.000 description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
Landscapes
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
- Incineration Of Waste (AREA)
Description
【発明の詳細な説明】 〈産業上の利用分野〉 この発明は既設、新設のボイラ装置を使用しガスタービ
ンの排ガスの保有する熱と共に含有する酸素の有効活用
により、排ガスの保有するエネルギーを有効に回収する
ガスタービン排ガス処理方法に関する。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention uses an existing and newly installed boiler device to effectively utilize the oxygen contained together with the heat contained in the exhaust gas of a gas turbine, thereby effectively utilizing the energy contained in the exhaust gas. The present invention relates to a gas turbine exhaust gas treatment method for collecting gas.
〈従来の技術及びその問題点〉 近時負荷の変動が多い発電施設のボイラや、起動停止が
間欠的に行なわれる工場においては、ガスタービンが使
用されることが多い。<Prior Art and Problems Thereof> A gas turbine is often used in a boiler of a power generation facility whose load is often changed recently, or in a factory where starting and stopping are intermittently performed.
しかしガスタービンは加圧された気体による燃焼をター
ビンの回転に変換することからその排ガス温度は約500
℃と高いものになってしまう。However, since the gas turbine converts combustion by pressurized gas into rotation of the turbine, its exhaust gas temperature is about 500
It will be as high as ℃.
このため従来はこの排熱を廃熱回収ボイラ（Waste Heat
Boiler）により回収蒸気とする手段が主として行なわ
れていた。Therefore, in the past, this waste heat was converted to waste heat recovery boiler (Waste Heat Recovery).
Boiler) was mainly used as a means to recover steam.
その構造は一例として第５図に示すようなものとなって
いる。（特開昭57-204704号公報）ガスタービン１′の
排ガスは廃熱ボイラ２′の過熱器管３′、蒸気管４′節
炭器５′を通り煙突より排出される。ドラム６′からの
蒸気は過熱器３′を通り蒸気タービン７′に供給され
る。Its structure is, for example, as shown in FIG. The exhaust gas from the gas turbine 1'is discharged from the chimney through the superheater pipe 3'of the waste heat boiler 2 ', the steam pipe 4'and the economizer 5'. The steam from the drum 6'is supplied to the steam turbine 7'through the superheater 3 '.
従って排ガスの保有する熱が伝熱管群と熱交換して蒸気
を発生するもので、その排ガス中に含まれる約12〜15％
のＯ2の利用については顕熱の利用以外には格別の考慮
は示されていなかった。従って排ガスの温度が約500℃
であることから高圧高温の蒸気を得ることができなかっ
た。ガスタービンを使用している工場には自家発電設備
を有することが多いことから省エネルギーのことを含め
ガスタービンと高温高圧ボイラ設備との組合せをして前
記した問題点を解決することが望まれる。Therefore, the heat contained in the exhaust gas exchanges heat with the heat transfer tube group to generate steam. About 12 to 15% of the exhaust gas is contained in the exhaust gas.
No particular consideration was given to the use of O 2 in the above , other than the use of sensible heat. Therefore, the temperature of the exhaust gas is about 500 ℃
Therefore, high-pressure and high-temperature steam could not be obtained. Since factories that use gas turbines often have private power generation facilities, it is desirable to solve the above-mentioned problems by combining gas turbines and high-temperature high-pressure boiler facilities, including energy conservation.
〈発明の目的〉 この発明はガスタービンの排ガスが高温であることと排
ガス中の残存酸素量を考慮しボイラとの組合せにより省
エネルギーと含有する酸素の有効活用によりボイラの効
率の向上及び高温蒸気をうる低ＮＯｘ燃焼を計るガスタ
ービン排ガスの処理方法を提案することを目的とする。<Object of the invention> This invention considers the high temperature of the exhaust gas of the gas turbine and the amount of residual oxygen in the exhaust gas, and saves energy by combining with the boiler and improves the efficiency of the boiler by effectively utilizing the contained oxygen and high temperature steam. An object of the present invention is to propose a method for treating a gas turbine exhaust gas that measures low NOx combustion.
〈手段の概要〉 要するにこの発明は、ガスタービンの排ガスの酸素含有
量を燃焼用気体として使用するために空気を供給して排
ガスと混合して調節し、ボイラ装置の燃焼部に供給し、
排ガス含有酸素の有効利用によるボイラ排ガス量の減少
による効率の向上と保有熱の回収をはかることを特徴と
する。<Outline of Means> In summary, the present invention supplies air to the oxygen content of the exhaust gas of the gas turbine for use as a gas for combustion to adjust by mixing with the exhaust gas, and supplies the oxygen to the combustion section of the boiler device.
It is characterized by improving the efficiency and recovering the retained heat by reducing the amount of boiler exhaust gas by effectively utilizing the oxygen contained in the exhaust gas.
また流動層炉にガスタービンの排ガスを供給し、その保
有熱で流動層の昇温をはかり急速起動を容易にするもの
である。Further, the exhaust gas of the gas turbine is supplied to the fluidized bed furnace, and the heat retained therein is used to raise the temperature of the fluidized bed to facilitate quick start.
更には燃焼可能な酸素含有量の調節に際し空気を供給し
混合気体の温度を調節した気体をボイラのバーナに供給
し火炉内の燃焼ガスの温度を高め高温高圧の蒸気を得る
ことを可能ならしめるものである。Furthermore, when adjusting the combustible oxygen content, it is possible to supply air and adjust the temperature of the mixed gas to the burner of the boiler to raise the temperature of the combustion gas in the furnace and obtain high-temperature and high-pressure steam. It is a thing.
またボイラの低ＮＯｘボイラ化を図るときは、ガスター
ビン排ガスの酸素含有量が１２〜１５％と低いことを利
用して１本または複数本のバーナに対してはそにまま空
気に代わり直接供給することを可能ならしめているもの
である。When reducing the NOx boiler of the boiler, the fact that the oxygen content of the gas turbine exhaust gas is as low as 12 to 15% is used to directly supply air to the burner or burners instead of air as it is. It is what makes it possible to do.
〈実施例１〉 バーナ２とウインドボックス３を水冷壁に接続したボイ
ラ１に、ガスタービン（図示せず）の排ガスＧは管路４
経由しウインドボックス３に供給される。この場合押込
送風機５から空気Ａが管路６経由して管路４との接続部
に供給され排ガスＧと混合したのちバーナ２に供給され
る。<Example 1> Exhaust gas G of a gas turbine (not shown) is connected to a pipeline 4 in a boiler 1 in which a burner 2 and a wind box 3 are connected to a water cooling wall.
It is supplied to the wind box 3 via the. In this case, the air A is supplied from the forced air blower 5 to the connecting portion with the pipe 4 via the pipe 6, mixed with the exhaust gas G, and then supplied to the burner 2.
ガスタービンからの排ガスＧは通常温度約500℃酸素
（Ｏ2）含有14〜15％（容積）のものである。また近い
将来にはガスタービン効率の向上で含有率の下ることが
予想される。送風機５より供給される空気は20℃、Ｏ22
1％（容積）（重量で23.2％の組成）のものである。The exhaust gas G from the gas turbine has a temperature of about 500 ° C. and oxygen (O 2 ) content of 14 to 15% (volume). It is expected that the content rate will fall in the near future due to the improvement of gas turbine efficiency. The air supplied from the blower 5 is 20 ° C. and O 2 2
1% (volume) (23.2% composition by weight).
従ってその空気の供給量を制御するときはバーナ２に約
300℃の排ガスと空気の混合気体でＯ217％（以下数値は
容積％で示す）にした気体を供給することができバーナ
の燃焼継続に支障なくかつ従来の再循環排ガスによる窒
素酸化物の発生の少ない低ＮＯｘ燃焼に代りＯ2調節を
したガスタービン排ガスで低ＮＯｘ燃焼ができる。Therefore, when controlling the amount of air supplied to the burner 2,
It is possible to supply a gas of O 2 17% (the numerical values below are shown in volume%) with a mixed gas of exhaust gas and air at 300 ° C., which does not hinder the combustion continuation of the burner, and does not generate nitrogen oxides generated by conventional recirculated exhaust gas. Low NOx combustion can be performed with gas turbine exhaust gas in which O 2 is adjusted instead of low NOx combustion which is less likely to occur.
ガスタービン排ガス量がバーナ部必要量より大となった
ときは、ボイラ１へのガスタービン排ガスの供給量を減
少させるためその一部を管路４から分岐する管路７に設
けたダンパ7aを開にし、ボイラ出口排ガス管路８に供給
し、ボイラの排ガスで300℃などのものと混合し約430℃
にするときは節炭器９との温度差を大にして熱回収も良
くボイラとしての効率を向上させることができる。なお
ボイラのドラフトロスが少ないときはボイラ入口（過熱
器出口が良い）に入れる方法も良い。When the amount of gas turbine exhaust gas becomes larger than the required amount of the burner section, a damper 7a provided in a pipe 7 that branches a part of the gas turbine exhaust gas from the pipe 4 in order to reduce the amount of gas turbine exhaust gas supplied to the boiler 1 is installed. Open it and supply it to the boiler outlet exhaust gas pipe line 8 and mix it with the boiler exhaust gas such as 300 ° C to about 430 ° C.
In this case, the temperature difference with the economizer 9 can be increased to improve heat recovery and improve the efficiency of the boiler. If the draft loss of the boiler is small, it is also possible to put it in the boiler inlet (superheater outlet is good).
気体の流量と温度の信号は制御箱10に夫々送られる。管
路４には排ガスの温度計4a，流量計4b，空気との混合ガ
スについては温度計4c，流量計4dが設けられ、その信号
は夫々制御箱10に送られる。空気供給管路６には温度計
6a，流量計6bが設けられその信号は制御箱10に送られ
る。排ガスをバイパスする管路７には流量計7bを、管路
８には混合ガスの温度計8aが設けられ制御箱10にその信
号が送られる。Gas flow rate and temperature signals are sent to the control box 10, respectively. The pipe 4 is provided with an exhaust gas thermometer 4a, a flow meter 4b, and a thermometer 4c and a flow meter 4d for the mixed gas with air, and the signals thereof are sent to the control box 10, respectively. The air supply line 6 has a thermometer
6a and a flow meter 6b are provided, and the signal thereof is sent to the control box 10. A flowmeter 7b is provided in the pipe 7 bypassing the exhaust gas, and a mixed gas thermometer 8a is provided in the pipe 8 to send a signal to the control box 10.
制御箱10には排ガスの量と空気量と、夫々の温度、その
混合割合に基づく混合ガスの温度と酸素含有量の関係を
記憶させておく。また同様ボイラ排ガスとガスタービン
の排ガス量と、夫々の温度と、その混合比による保有熱
回収装置（第１図では節炭器９）に供給する管路８にお
ける混合ガス温度の関係を記憶させておく。The control box 10 stores the relationship between the amount of exhaust gas and the amount of air, the respective temperatures, the temperature of the mixed gas based on the mixing ratio thereof, and the oxygen content. Similarly, the relationship between the amounts of the boiler exhaust gas and the gas turbine exhaust gas, the respective temperatures, and the temperature of the mixed gas in the pipe 8 supplied to the retained heat recovery device (coal saver 9 in FIG. 1) according to the mixing ratio is stored. Keep it.
前記した各温度計４ａ、６ａ、４ｃ，流量計４ｂ、６
ｂ、１１ｂ、４ｄの信号を受けた制御箱10はその記憶す
るデータと対比し管路６のダンパ6d，管路７のダンパ7d
を制御する。The above-mentioned thermometers 4a, 6a, 4c, flow meters 4b, 6
The control box 10 receiving the signals b, 11b, and 4d compares the data stored therein with the damper 6d of the pipeline 6 and the damper 7d of the pipeline 7.
To control.
また燃料供給系のポンプ11より送出され、管路13を経由
する燃料量はボイラ負荷に合わせ制御弁12により制御さ
れる。送出燃料量は管路13に設けた燃料流量計11bで制
御箱１０に信号が送られる。Further, the amount of fuel delivered from the pump 11 of the fuel supply system and passing through the pipeline 13 is controlled by the control valve 12 according to the boiler load. The amount of fuel to be sent is sent to the control box 10 by the fuel flow meter 11b provided in the conduit 13.
〈実施例２〉 大容量のボイラを使用するプラントでは相当量の未燃灰
（EP灰と称す）が排出され含有する未燃炭素の燃却によ
る減容とエネルギー回収を必要とすることから流動層ボ
イラが使用されている。<Example 2> In a plant using a large-capacity boiler, a considerable amount of unburned ash (referred to as EP ash) is discharged, and it is necessary to reduce the volume by burning the unburned carbon contained and recover energy. A layer boiler is used.
従来の流動層ボイラの一例を第２図に示す。流動層ボイ
ラ14は砂等の流動媒体よりなる流動層内に伝熱管を浸漬
し蒸気を発生させている。この際負荷変動への対応、起
動時に流動媒体の昇温を早くする等のため多孔板15下の
空気室16は複数に区画して気室16a,16b,16c,16dとし、
流動層内には背の低い仕切り17を設け層下部を複数に仕
切りしている。起動に際しては熱ガス発生炉18のバーナ
18aの燃焼により生じた熱ガスでまず図示気室16d上の流
動層を加熱し、その加熱媒体により順次各気室に対応す
る流動層の燃料に着火させ媒体を加熱している。石炭等
を燃料とするときは層内に微粉炭Ｐ1を供給し、燃焼性
のよいことを利用し負荷変動に対応させ、層上からは粗
粒炭Ｃを供給し燃焼に時間のかかることから、応答性が
遅くてもよい定常負荷に対処している。しかしこの場合
バーナ18aには起動用の燃料供給を必要としこれに伴う
制御の問題がある。An example of a conventional fluidized bed boiler is shown in FIG. In the fluidized bed boiler 14, a heat transfer tube is immersed in a fluidized bed made of a fluid medium such as sand to generate steam. At this time, in response to load fluctuations, the air chamber 16 under the perforated plate 15 is divided into a plurality of air chambers 16a, 16b, 16c, 16d in order to accelerate the temperature rise of the fluidized medium at startup,
A short partition 17 is provided in the fluidized bed to divide the lower part of the bed into a plurality of partitions. When starting, the burner of the hot gas generation furnace 18
First, the hot gas generated by the combustion of 18a heats the fluidized bed on the illustrated air chamber 16d, and the heating medium sequentially ignites the fuel in the fluidized bed corresponding to each air chamber to heat the medium. When coal or the like is used as a fuel, pulverized coal P 1 is supplied into the bed, and the fact that it has good combustibility is used to respond to load fluctuations, and coarse coal C is supplied from above the bed and combustion takes time. Therefore, it deals with a steady load that may have slow response. However, in this case, the burner 18a needs a fuel supply for starting, and there is a control problem associated therewith.
この発明の実施例としての流動層ボイラ１４を第３図に
示す。流動層ボイラ14の構造は第２図の場合と同様であ
る。この場合ガスタービンからの排ガスＧは押込送風機
（図示せず）付きの管路20内に、送風機付きの管路21か
らの空気の供給を受け要すれば混合器22を設けここで混
合し、混合ガスとして各気室16a〜16dに供給する。この
装置により起動時には500℃もあるガスタービン排ガス
なのでそのまま起動時の流動層加熱用に使用できる。ま
た空気と排ガスとの混合を適正にするとき燃焼用気体と
して燃焼負荷に対応して直接気室に供給できる。A fluidized bed boiler 14 as an embodiment of the present invention is shown in FIG. The structure of the fluidized bed boiler 14 is the same as that shown in FIG. In this case, the exhaust gas G from the gas turbine is mixed in a pipe 20 equipped with a forced air blower (not shown) and a mixer 22 provided if air supply from the pipe 21 equipped with a blower is required. The mixed gas is supplied to each of the air chambers 16a to 16d. With this device, the gas turbine exhaust gas, which has a temperature of 500 ° C at startup, can be used as it is for heating the fluidized bed at startup. Further, when the air and the exhaust gas are properly mixed, the gas for combustion can be directly supplied to the air chamber according to the combustion load.
また低Ｏ2の混合ガスとするときは流動層での低NOx燃焼
用の気体ともなる。そのガスタービンよりの排ガスにつ
いてのＯ2制御は制御箱23により第１の実施例のように
排ガスと空気との混合ができる。管路20を経由するガス
タービン排ガスは実施例１と同様に混合ガスにして節炭
器のボイラ給水加熱用に使用できる。When the mixed gas of low O 2 is used, it also serves as a gas for low NOx combustion in the fluidized bed. For the O 2 control of the exhaust gas from the gas turbine, the exhaust gas and air can be mixed by the control box 23 as in the first embodiment. The gas turbine exhaust gas passing through the pipe 20 can be used as a mixed gas for heating the boiler feed water of the economizer as in the first embodiment.
符号19a,20aは温度計、符号19b,20bは流量計である。Reference numerals 19a and 20a are thermometers, and reference numerals 19b and 20b are flow meters.
〈実施例３〉 第４図は低NOxボイラでバーナの空気比の調節により低N
Ox燃焼をするボイラの構造を示す。（特公昭62-25927
号） ボイラ１に代わる低ＮＯｘボイラ２５には下段から空気
比１以下で燃焼する主バーナ26、その燃焼ガス下流にそ
れより低い空気比の副バーナ27,28が順に位置し、更に
その下流に空気供給口29が位置する。<Embodiment 3> FIG. 4 shows a low NOx boiler, which has a low N ratio by adjusting the air ratio of the burner.
The structure of the boiler which burns Ox is shown. (Japanese Patent Sho 62-25927
The low NOx boiler 25, which replaces the boiler 1, has a main burner 26 that burns at an air ratio of 1 or less from the lower stage, sub-burners 27 and 28 that have lower air ratios downstream from the combustion gas, and further downstream. The air supply port 29 is located.
この場合ガスタービン排ガスの管路30は、燃焼空気用押
込送風機31をもつ管路32から分岐する管路33より空気の
供給を受け混合ガスを生成し、適当な低空気比とするバ
ーナ、例えばバーナ27に、その燃焼する燃料量に対応す
る酸素量を供給することになる酸素含有量の混合ガスを
管路34から供給することにより、ガスタービン排ガスの
保有熱量の回収、含有酸素の有効使用をすることができ
る。In this case, the gas turbine exhaust gas pipe 30 is supplied with air from a pipe 33 branched from a pipe 32 having a forced air blower 31 for combustion to generate a mixed gas, and a burner having an appropriate low air ratio, for example, By supplying to the burner 27 a mixed gas having an oxygen content that will supply an oxygen content corresponding to the amount of fuel to be burned, from the pipeline 34, recovery of the heat quantity possessed by the gas turbine exhaust gas and effective use of the oxygen content. You can
燃料供給系及び供給する排ガス量、空気量の制御手段に
ついては実施例１．２に準じたものとなるので図示及び
説明は省略する。The fuel supply system and the means for controlling the amount of exhaust gas and the amount of air to be supplied are in accordance with Example 1.2, and therefore illustration and description thereof are omitted.
〈発明の効果〉 （ａ）バーナの燃焼用気体としては０２の含有が１２〜
１５％と低くかつ５００℃と高くて不適のガスタービン
排ガスを空気管路６より空気を供給し、温度を３００℃
位まで減温し、Ｏ２含有を燃焼に適す含有率に高めるこ
とができ、ガスタービン排ガスの保有熱の回収と、ガス
タービン排ガスの補給により送風機の動力を大幅に減少
できる。<Effects of the Invention> (a) The content of 0 2 is 12 to 12 as the combustion gas of the burner.
The unsuitable gas turbine exhaust gas as low as 15% and as high as 500 ° C. is supplied with air from the air pipeline 6 to keep the temperature at 300 ° C.
It is possible to reduce the temperature to the order of magnitude and increase the O 2 content to a content rate suitable for combustion, and the power of the blower can be significantly reduced by recovering the heat retained by the gas turbine exhaust gas and supplementing the gas turbine exhaust gas.
（ｂ）節炭器９では、加熱ガスとし管路７から過剰とす
る５００℃のガスタービン排ガスを管路８に供給し、高
温の混合ガスを造り熱交換効果を高めることができ、過
剰ガスの有効利用ができる。(B) In the economizer 9, the gas turbine exhaust gas at 500 ° C., which is the excess gas from the pipeline 7, is supplied to the pipeline 8 as a heating gas to form a high temperature mixed gas and enhance the heat exchange effect. Can be effectively used.
（ｃ）流動層ボイラを設ける時は、混合器２２の混合ガ
スを４００℃近くにでき、流動媒体を予熱し急速起動が
でき、また起動後燃焼と流動用気体とし使用するとき
は、その保有熱で流動層ボイラ１４の使用燃料量を低減
できる。また特別の起動用の熱ガス発生炉１８などの付
属装置を不要とする。(C) When a fluidized bed boiler is provided, the mixed gas in the mixer 22 can be set to near 400 ° C., the fluidized medium can be preheated and rapidly started, and the combustion gas after startup and its use when used as a fluidizing gas are retained. The amount of fuel used in the fluidized bed boiler 14 can be reduced by heat. Further, a special starting device such as the hot gas generating furnace 18 for starting is unnecessary.
（ｄ）ボイラ１を低ＮＯｘボイラ２５に代えるときは、
ガスタービンの排ガスが低Ｏ２含有なのでこれをそのま
ま直接バーナ２６に供給し、空気比１以下の燃焼を容易
にし、ＮＨ２、ＣＮ、等の還元ラジカル成分の発生を良
好にし、ＮＯｘ排出を少なくできる。(D) When replacing the boiler 1 with the low NOx boiler 25,
Since the exhaust gas of the gas turbine contains a low amount of O 2 , it is directly supplied to the burner 26 as it is, facilitating the combustion with an air ratio of 1 or less, improving the generation of reducing radical components such as NH 2 and CN, and reducing NOx emissions. it can.
また第４図のバーナ２７，２８については管路３３より
管路３０に空気供給がされて適当な酸素含有濃度のガス
にしたものの供給を受けるので、これらバーナの空気比
制御ば容易になる。いずれにしても低ＮＯｘボイラとし
ての機能を高めることができる。Further, the burners 27 and 28 shown in FIG. 4 are supplied with air from the conduit 33 to the conduit 30 to obtain gas having an appropriate oxygen-containing concentration, so that it becomes easy to control the air ratio of these burners. In any case, the function as a low NOx boiler can be enhanced.
第１図はこの発明の第１実施例にかかる装置の構造、配
管系統、制御系統を示す図面、第２図は従来の流動層ボ
イラの起動手段を示す装置の配管系統図、第３図は第２
図の装置に本願発明を実施したときの第２実施例の図
面、第４図は低NOxボイラに本願発明を実施した第３実
施例の配管系統図、第５図は従来のガスタービンと廃熱
ボイラの組合せを示す構造図面である。 １…ボイラ、Ｇ…ガスタービンの排ガス ２…バーナ、３…ウインドボックス ４…管路、５…押込送風機 6,7…管路、９…節炭器 10…制御箱、11…燃料ポンプ 12…制御弁、14…流動層ボイラ 16a,16b,16c,16d…気室 18…熱ガス発生炉、22…混合器 23…制御箱、25…低NOxボイラ Ａ…空気FIG. 1 is a drawing showing the structure, piping system and control system of the apparatus according to the first embodiment of the present invention, FIG. 2 is a piping system diagram of the apparatus showing the starting means of a conventional fluidized bed boiler, and FIG. 3 is Second
FIG. 4 is a drawing of a second embodiment when the present invention is applied to the apparatus shown in FIG. 4, FIG. 4 is a piping system diagram of a third embodiment where the present invention is applied to a low NOx boiler, and FIG. It is a structural drawing which shows the combination of a heat boiler. 1 ... Boiler, G ... Exhaust gas from gas turbine 2 ... Burner, 3 ... Windbox 4 ... Pipe line, 5 ... Push blower 6,7 ... Pipe line, 9 ... Economizer 10, Control box, 11 ... Fuel pump 12 ... Control valve, 14 ... Fluidized bed boiler 16a, 16b, 16c, 16d ... Air chamber 18 ... Hot gas generator, 22 ... Mixer 23 ... Control box, 25 ... Low NOx boiler A ... Air
Claims (5)
供給し、かつ該ボイラの燃焼排ガス管路にその燃焼排ガ
スの保有熱を回収する装置を設けたガスタービン排ガス
処理方法において、前記ガスタービン排ガスをボイラ
（１）に供給する管路（４）に空気を供給するダンパ付
き管路（６）を接続して前記ボイラの燃焼部に供給する
混合ガスの温度を調節し、また前記管路（４）より分岐
し、前記ボイラ（１）の排ガス管路（８）に設けた排ガ
ス保有熱量を回収する装置の上流管路と接続するダンパ
（７ｄ）付き管路（７）を設け、過剰ガスタービン排ガ
スの保有熱を回収することを特徴とするガスタービン排
ガス処理方法。1. A gas turbine exhaust gas treatment method, comprising a device for supplying exhaust gas of a gas turbine to a combustion section of a boiler and for recovering heat retained by the combustion exhaust gas in a combustion exhaust gas line of the boiler. A pipe line (6) for supplying air to a pipe line (4) for supplying exhaust gas to the boiler (1) is connected to adjust the temperature of the mixed gas supplied to the combustion section of the boiler, and the pipe line is also provided. (4) is branched and a pipe line (7) with a damper (7d) connected to the upstream pipe line of the device for recovering the exhaust gas holding heat amount provided in the exhaust gas pipe line (8) of the boiler (1) is provided, A method for treating gas turbine exhaust gas, which comprises recovering the heat retained by the gas turbine exhaust gas.
炭器（９）とすることを特徴とする請求項１記載のガス
タービン排ガス処理方法。2. The gas turbine exhaust gas treatment method according to claim 1, wherein the device for recovering the retained heat of the combustion gas is a economizer (9).
置を流動層ボイラとし、管路（２０）の排ガスと押込み
送風機（１９）の空気の混合ガスで流動媒体を予熱し前
記流動層ボイラの起動速度を早め、かつ起動後は燃焼と
流動用の気体として使用することを特徴とする請求項１
記載のガスタービン排ガス処理方法。3. A fluidized bed boiler is used as a device for recovering the retained heat of the gas turbine exhaust gas, and the fluidized medium is preheated by a mixed gas of the exhaust gas in the pipe (20) and the air in the forced draft blower (19). 2. The starting speed is increased, and after starting, it is used as a gas for combustion and flow.
The gas turbine exhaust gas treatment method described.
ナを設け、その上段に空気口を設け、各段のバーナの夫
々の酸素濃度比を調節して低ＮＯｘ燃焼をする低ＮＯｘ
ボイラ（２５）とすることを特徴とする請求項１記載の
ガスタービン排ガス処理方法。4. A low NOx that burns low NOx by adjusting the oxygen concentration ratio of each burner of each stage by providing burners in a plurality of stages on the wall surface of the boiler (1) and providing an air port in the upper stage thereof.
The gas turbine exhaust gas treatment method according to claim 1, wherein the method is a boiler (25).
空気供給管路（６）とに夫々設けた流量計（４ｂ）（６
ｂ）、温度計（４ａ）（６ａ）の信号を、前記ガスター
ビン排ガス流量と前記供給空気の流量の比率により規定
される混合ガスの酸素含有濃度と温度を記憶する制御箱
（１０）に送り、前記制御箱（１０）からの指令でボイ
ラ負荷に合うよう燃料の制御弁（１２）を制御し、その
燃料流量計（１１ｂ）指示の燃料量に必要とする空気量
を得るためダンパ（７ｄ）とダンパ（６ｄ）を制御する
ことを特徴とする請求項１ないし４のいずれかに記載の
ガスタービン排ガス処理方法。5. An exhaust gas delivery line (4) for a gas turbine,
Flowmeters (4b) (6) provided respectively in the air supply pipeline (6)
b), sending signals from thermometers (4a) (6a) to a control box (10) that stores the oxygen content concentration and temperature of the mixed gas defined by the ratio of the gas turbine exhaust gas flow rate to the supply air flow rate A damper (7d) for controlling the fuel control valve (12) according to a command from the control box (10) so as to match the boiler load, and obtaining the air amount required for the fuel amount indicated by the fuel flow meter (11b). ) And a damper (6d) are controlled, The gas-turbine exhaust-gas processing method in any one of Claim 1 thru | or 4 characterized by the above-mentioned.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63285688A JPH0617650B2 (en) | 1988-11-14 | 1988-11-14 | Gas turbine exhaust gas treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63285688A JPH0617650B2 (en) | 1988-11-14 | 1988-11-14 | Gas turbine exhaust gas treatment method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02136520A JPH02136520A (en) | 1990-05-25 |
| JPH0617650B2 true JPH0617650B2 (en) | 1994-03-09 |
Family
ID=17694757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63285688A Expired - Lifetime JPH0617650B2 (en) | 1988-11-14 | 1988-11-14 | Gas turbine exhaust gas treatment method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0617650B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5541225A (en) * | 1994-10-11 | 1996-07-30 | The General Hospital Corporation | α-Linolenic acid and eicosatetraynoic acid in the prevention and treatment of ventricular tachyarrhythmia |
| US20110272051A1 (en) * | 2009-01-15 | 2011-11-10 | Flsmidth A/S | Damper Arrangement |
| CN106247368B (en) * | 2016-07-29 | 2018-07-17 | 上海交通大学 | A kind of industrial coal powder boiler flue gas recirculation low nitrogen burning method and system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5947137A (en) * | 1982-09-03 | 1984-03-16 | Miyano Tekkosho:Kk | Spindle controller of machine tool |
| DE3612888A1 (en) * | 1986-04-17 | 1987-10-29 | Metallgesellschaft Ag | COMBINED GAS / STEAM TURBINE PROCESS |
-
1988
- 1988-11-14 JP JP63285688A patent/JPH0617650B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02136520A (en) | 1990-05-25 |
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