JP2002022140A - Apparatus for exhaust-gas treatment for coal fired boiler - Google Patents
Apparatus for exhaust-gas treatment for coal fired boilerInfo
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- JP2002022140A JP2002022140A JP2000199255A JP2000199255A JP2002022140A JP 2002022140 A JP2002022140 A JP 2002022140A JP 2000199255 A JP2000199255 A JP 2000199255A JP 2000199255 A JP2000199255 A JP 2000199255A JP 2002022140 A JP2002022140 A JP 2002022140A
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- Prior art keywords
- exhaust gas
- fired boiler
- temperature
- coal
- exhaust
- Prior art date
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- Chimneys And Flues (AREA)
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
- Treating Waste Gases (AREA)
- Electrostatic Separation (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、石炭焚きボイラー
排ガスの除塵と脱硫を行う石炭焚きボイラー用排ガス処
理装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exhaust gas treatment apparatus for a coal-fired boiler for removing dust and desulfurizing exhaust gas from a coal-fired boiler.
【０００２】[0002]
【従来の技術】石炭焚きボイラーの排ガス処理装置とし
て特開昭６０−２２７８４５号公報に開示されている技
術が知られている。この技術は電気集塵機の上流側にガ
スクーラー等を設置して排ガスの温度を制御するもので
あり、同公報には集塵機入口において適正排ガス温度を
維持することで石炭灰等の捕集性を向上させることがで
きると記載されている。2. Description of the Related Art A technique disclosed in Japanese Patent Application Laid-Open No. 60-227845 is known as an exhaust gas treatment device for a coal-fired boiler. This technology is to control the temperature of exhaust gas by installing a gas cooler or the like upstream of the electric dust collector. According to the same publication, it is possible to improve the collection of coal ash etc. by maintaining an appropriate exhaust gas temperature at the dust collector inlet. It is described that it can be made.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、この適
正排ガス温度は電気集塵機における捕集性を確保するよ
う定められたものであるため、捕集性、言い換えると除
塵効率以外の排ガス処理性能、とりわけ脱硫性能につい
ては考慮されていない。However, since this proper exhaust gas temperature is determined so as to ensure the trapping property of the electric precipitator, the trapping property, in other words, the exhaust gas treatment performance other than the dust removal efficiency, especially desulfurization, Performance is not considered.
【０００４】そこで、本発明は、除塵性能、脱硫性能に
優れた石炭焚きボイラー用排ガス処理方法を提供するこ
とを課題とする。Accordingly, an object of the present invention is to provide an exhaust gas treatment method for a coal-fired boiler which is excellent in dust removal performance and desulfurization performance.
【０００５】[0005]
【課題を解決するための手段】上記課題を解決するた
め、本発明に係る石炭焚きボイラー用排ガス処理装置
は、脱硝装置と、エアヒーターと、ガス冷却器と、電気
集塵機と、乾式脱硫装置とを直列に接続して構成されて
おり、乾式脱硫装置への入口排ガス温度が水露点温度を
超え、かつ、１２０℃以下となるようガス冷却器の冷却
能力を制御する制御装置を備えていることを特徴とす
る。Means for Solving the Problems To solve the above problems, an exhaust gas treatment apparatus for a coal-fired boiler according to the present invention comprises a denitration device, an air heater, a gas cooler, an electric dust collector, a dry desulfurization device. And a control device for controlling the cooling capacity of the gas cooler so that the exhaust gas temperature at the inlet to the dry desulfurization device exceeds the water dew point temperature and is 120 ° C. or less. It is characterized by.
【０００６】本発明者らの知見によれば、乾式脱硫装置
の脱硫性能は排ガス温度が低いほど向上する。ただし、
排ガス温度が露点温度以下になると、脱硫装置内の炭素
質吸着剤表面への結露により装置が閉塞してしまうおそ
れがある。このため、脱硫能力向上の観点からは乾式脱
硫装置に導入する排ガス温度は水露点温度を超えるでき
るだけ低い温度であることが好ましい。乾式脱硫装置入
口の排ガス温度がこのような条件を満たすようガス冷却
器で排ガスを冷却した場合、電気集塵機へ導入される排
ガスの温度も比例して低下するので、除塵性能も向上す
る。また、乾式脱硫装置は、移動層集塵機能を併せ持っ
ているので、両者の機能を融合することにより電気集塵
機の大幅な小型化を達成することができる。According to the findings of the present inventors, the desulfurization performance of a dry desulfurization device improves as the exhaust gas temperature decreases. However,
If the temperature of the exhaust gas is lower than the dew point, the device may be blocked due to condensation on the surface of the carbonaceous adsorbent in the desulfurization device. For this reason, from the viewpoint of improving the desulfurization capacity, the temperature of the exhaust gas introduced into the dry desulfurization device is preferably as low as possible, exceeding the water dew point temperature. When the exhaust gas is cooled by the gas cooler so that the exhaust gas temperature at the inlet of the dry desulfurization device satisfies such a condition, the temperature of the exhaust gas introduced into the electric precipitator also decreases in proportion, so that the dust removal performance is improved. In addition, since the dry desulfurization device has a moving bed dust collecting function, the size of the electric dust collector can be significantly reduced by combining both functions.
【０００７】ここで、ガス冷却器は水冷式であり、冷媒
流量を制御することでその冷却能力を制御可能であるこ
とが好ましい。水冷式のガス冷却器を利用すると、冷媒
流量の調整で冷却能力を容易かつ確実に調整することが
可能であり、制御に対する応答性も早いという利点があ
る。Here, it is preferable that the gas cooler is of a water-cooled type and its cooling capacity can be controlled by controlling the flow rate of the refrigerant. The use of a water-cooled gas cooler has the advantage that the cooling capacity can be easily and reliably adjusted by adjusting the flow rate of the refrigerant, and the response to control is quick.
【０００８】また、ガス冷却器の冷媒として石炭焚きボ
イラーの復水器冷却水を使用することにより、新たな冷
媒を必要とせず、設備の省力化を図ることができる。Further, by using the condenser cooling water of the coal-fired boiler as the refrigerant of the gas cooler, it is not necessary to use a new refrigerant and the equipment can be saved.
【０００９】乾式脱硫装置の手前でアンモニアを導入す
ることにより、脱硝を同時に行うことも可能であるが、
１２０℃未満の温度の排ガスの場合は、この方法では極
端に脱硝性能が低下するので、排ガスの温度が高い時
点、すなわち、エアヒーターの手前で脱硝処理を行う
と、高い脱硝率が得られる。[0009] By introducing ammonia before the dry desulfurization unit, denitration can be carried out at the same time.
In the case of exhaust gas having a temperature of less than 120 ° C., the denitration performance is extremely reduced by this method. Therefore, when the exhaust gas is denitrated at a high temperature, that is, before the air heater, a high denitration rate can be obtained.
【００１０】[0010]
【発明の実施の形態】以下、添付図面を参照して本発明
の好適な実施の形態について詳細に説明する。図１は、
本発明に係る石炭焚きボイラー用排ガス処理装置の全体
構成を示すブロック図である。Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG.
It is a block diagram showing the whole flue gas treating device for a coal-fired boiler concerning the present invention.
【００１１】この排ガス処理装置は、ボイラー１と煙突
９の間の排ガス流路であるラインＬ１〜Ｌ６の間に脱硝
装置２、エアヒーター３、ガス冷却器４、電気集塵機
６、乾式脱硫装置８が直列に配列されて構成されてい
る。そして、電気集塵機５と乾式脱硫装置８とを接続す
るラインＬ５には排ガス温度計６が配置され、この温度
計６の出力は制御装置７へと送られる。制御装置７は、
ガス冷却器４の動作を制御するものである。The exhaust gas treatment apparatus includes a denitration device 2, an air heater 3, a gas cooler 4, an electric dust collector 6, a dry desulfurization device 8 between lines L1 to L6, which are exhaust gas channels between the boiler 1 and the chimney 9. Are arranged in series. An exhaust gas thermometer 6 is arranged on a line L5 connecting the electric precipitator 5 and the dry desulfurization device 8, and the output of the thermometer 6 is sent to a control device 7. The control device 7
The operation of the gas cooler 4 is controlled.
【００１２】ボイラー１は石炭焚きボイラーであり、そ
の排ガス中には石炭燃焼灰（フライアッシュ）等のダス
トや硫黄酸化物（SOx）等の酸性成分を含んでいる。脱
硝装置２は、脱硝触媒が充填されており、排ガスに注入
したアンモニアと排ガス中の窒素酸化物（NOx）とを反
応させて分解処理する装置である。エアヒーター３は、
排ガスによりボイラー１への給水を加熱する装置であ
る。これにより、排ガスを冷却する効果を有する。ま
た、ガス冷却器４は、空冷式や水冷式のガス冷却器であ
り、例えば、ボイラー１の復水器冷却水を利用する水冷
式ガス冷却器である。電気集塵機５は、１４０℃前後の
排ガス温度領域で使用されるいわゆる低温電気集塵機で
ある。乾式脱硫装置８は、活性炭等の炭素質吸着剤が充
填されており、充填された炭素質吸着剤を移動させなが
ら排ガスと接触させる移動層式の吸着装置である。The boiler 1 is a coal-fired boiler, and its exhaust gas contains dust such as coal combustion ash (fly ash) and acidic components such as sulfur oxides (SOx). The denitration device 2 is a device that is filled with a denitration catalyst and reacts ammonia injected into the exhaust gas with nitrogen oxides (NOx) in the exhaust gas to perform a decomposition treatment. The air heater 3
This is a device that heats the water supply to the boiler 1 with exhaust gas. This has the effect of cooling the exhaust gas. The gas cooler 4 is an air-cooled or water-cooled gas cooler, for example, a water-cooled gas cooler that uses condenser cooling water of the boiler 1. The electric precipitator 5 is a so-called low-temperature electric precipitator used in an exhaust gas temperature range around 140 ° C. The dry desulfurization device 8 is a moving bed type adsorption device that is filled with a carbonaceous adsorbent such as activated carbon and contacts the exhaust gas while moving the charged carbonaceous adsorbent.
【００１３】次に、本実施形態の動作について詳細に説
明する。ボイラー１から排出された排ガスはラインＬ１
を介して脱硝装置２へ送られ、排ガス中のNOxが分解さ
れ、除去される。一般に脱硝装置２の脱硝性能は排ガス
の温度が１２０℃以下になると極端に低下するため、所
定の脱硝率を確保するためには、排ガス温度が高い処理
装置の上流側へ配置することが好ましい。Next, the operation of this embodiment will be described in detail. Exhaust gas discharged from boiler 1 is supplied to line L1.
The NOx in the exhaust gas is decomposed and removed by the denitration apparatus 2 through the NOx. In general, the denitration performance of the denitration device 2 is extremely reduced when the temperature of the exhaust gas falls to 120 ° C. or lower. Therefore, in order to secure a predetermined denitration rate, it is preferable to arrange the denitration device upstream of the processing device having a high exhaust gas temperature.
【００１４】こうしてNOxが除去された排ガスは３００
〜４００℃程度でラインＬ２を介してエアヒーター３へ
送られ、１３０〜１４０℃程度まで冷却された後、ライ
ンＬ３を介してガス冷却器４へと送られ、さらに１２０
℃程度まで冷却される。ガス冷却器４で冷却された排ガ
スはラインＬ４を介して電気集塵機５へと送られ、ここ
でフライアッシュ等のダストの大部分が回収除去され
る。The exhaust gas from which NOx has been removed is 300
After being sent to the air heater 3 through the line L2 at about 400 ° C. and cooled to about 130 to 140 ° C., it is sent to the gas cooler 4 through the line L3 and
Cooled down to about ° C. The exhaust gas cooled by the gas cooler 4 is sent to an electric precipitator 5 via a line L4, where most of dust such as fly ash is collected and removed.
【００１５】この排ガスはラインＬ５を介して乾式脱硫
装置８へと送られる。ここで排ガス温度計６により乾式
脱硫装置８へ導入される排ガス温度（脱硫装置入口排ガ
ス温度）を測定している。そして、この脱硫装置入口排
ガス温度が水露点温度を超え、かつできるだけ低い温度
になるようガス冷却器４の作動を制御している。すなわ
ち、乾式脱硫装置８の入口排ガス温度が高い場合には、
制御装置７は、ガス冷却器４の冷却能力を増大させてラ
インＬ４より上流側のガス冷却器４出口における排ガス
温度を低下せしめる。一方、乾式脱硫装置８の入口排ガ
ス温度が低い場合には、制御装置７は、ガス冷却器４の
冷却能力を低下させてラインＬ４より上流側のガス冷却
器４出口における排ガス温度を上昇せしめる。ガス冷却
器４が例えば水冷式のガス冷却器である場合、その冷却
能力は冷媒である冷却水の流量を調整することで容易か
つ確実に制御することが可能である。This exhaust gas is sent to a dry desulfurization unit 8 via a line L5. Here, the temperature of the exhaust gas introduced into the dry desulfurization device 8 (the temperature of the exhaust gas at the inlet of the desulfurization device) is measured by the exhaust gas thermometer 6. The operation of the gas cooler 4 is controlled so that the exhaust gas temperature at the desulfurization device inlet exceeds the water dew point temperature and becomes as low as possible. That is, when the exhaust gas temperature at the inlet of the dry desulfurization device 8 is high,
The controller 7 increases the cooling capacity of the gas cooler 4 to lower the exhaust gas temperature at the outlet of the gas cooler 4 upstream of the line L4. On the other hand, when the exhaust gas temperature at the inlet of the dry desulfurization device 8 is low, the control device 7 decreases the cooling capacity of the gas cooler 4 to increase the exhaust gas temperature at the outlet of the gas cooler 4 upstream of the line L4. When the gas cooler 4 is, for example, a water-cooled gas cooler, its cooling capacity can be easily and reliably controlled by adjusting the flow rate of the cooling water as the refrigerant.
【００１６】乾式脱硫装置８内では、排ガスと炭素質吸
着剤とが接触することで、排ガス中のSOx、凝縮ダス
ト、ダイオキシン類、さらには硫酸ミストや可溶性の浮
遊粒子状物質（SPM）、残存するダスト類も炭素質吸着
剤自体に吸着されたり、それらの隙間に捕集されること
で除去される。こうして清浄化された排ガスはラインＬ
４を介して煙突９へと送られ、大気中へと放出される。In the dry desulfurizer 8, the exhaust gas and the carbonaceous adsorbent come into contact with each other, so that SOx, condensed dust, dioxins, sulfuric acid mist, soluble suspended particulate matter (SPM), The dust that is generated is also removed by being adsorbed by the carbonaceous adsorbent itself or by being trapped in gaps between them. The exhaust gas thus purified is supplied to line L
It is sent to the chimney 9 via 4 and discharged to the atmosphere.
【００１７】本実施形態においては、乾式脱硫装置８に
導入される排ガス温度がその水露点温度を超え、かつ、
できるだけ低い温度となるよう制御されている。図２
は、乾式脱硫装置における排ガス温度と脱硫率の関係の
一例を示すグラフである。図から明らかなように排ガス
温度が低下するほど脱硫率は向上することがわかる。排
ガス温度が１２０℃以下の場合は、脱硫率は９９．０％
以上になり、さらに８０℃まで低下させると、約９９．
９％の脱硫率を達成し得る。脱硫率は排ガス温度が低い
ほど向上するが、一方で排ガス温度が水露点温度以下に
なると、乾式脱硫装置８内の炭素質吸着剤上に結露が起
こり、これにより炭素質吸着剤が固着するなどして閉塞
してしまう可能性があるが、本実施形態ではこのような
結露による閉塞が起こるおそれがない。そして、できる
だけ低い温度に設定することで脱硫率を確保することが
できる。この温度範囲は１２０℃以下であることが好ま
しく、１００℃以下若しくは８０℃以下であればさらに
好ましい。また、（露点温度＋ａ℃）として目標を設定
してもよく、目標とする温度範囲のａ℃は、ガス冷却器
４の制御性等を考慮して１０〜３０℃程度の温度範囲に
設定することが好ましい。In the present embodiment, the temperature of the exhaust gas introduced into the dry desulfurization unit 8 exceeds the water dew point temperature, and
The temperature is controlled to be as low as possible. FIG.
3 is a graph showing an example of a relationship between an exhaust gas temperature and a desulfurization rate in a dry desulfurization device. As is apparent from the figure, the desulfurization rate increases as the exhaust gas temperature decreases. When the exhaust gas temperature is 120 ° C or lower, the desulfurization rate is 99.0%.
When the temperature is further lowered to 80 ° C., about 99.
A 9% desulfurization rate can be achieved. The desulfurization rate is improved as the exhaust gas temperature is lower. On the other hand, when the exhaust gas temperature is lower than the water dew point, dew condensation occurs on the carbonaceous adsorbent in the dry desulfurization apparatus 8, thereby causing the carbonaceous adsorbent to adhere. However, in the present embodiment, there is no possibility that such dew condensation will occur. The desulfurization rate can be secured by setting the temperature as low as possible. This temperature range is preferably 120 ° C. or lower, more preferably 100 ° C. or lower or 80 ° C. or lower. Further, a target may be set as (dew point temperature + a ° C.), and the target temperature range of a ° C. is set to a temperature range of about 10 to 30 ° C. in consideration of the controllability of the gas cooler 4 and the like. Is preferred.
【００１８】本実施形態では、乾式脱硫装置８での脱硫
率達成の観点から電気集塵機５上流における排ガス温度
の制御を行うため、特開昭６０−２２７８４５号公報記
載の技術より電気集塵機５へ導入される排ガスの温度が
低くなり、電気集塵機５における捕集性も向上する。ま
た、電気集塵機５を通過したダスト類や、電気集塵機５
では捕集しきれないSPM、ミスト類も乾式脱硫装置８で
捕集することができるので、処理装置全体での捕集性は
格段に向上する。In this embodiment, in order to control the temperature of the exhaust gas upstream of the electrostatic precipitator 5 from the viewpoint of achieving the desulfurization rate in the dry desulfurizer 8, it is introduced into the electric precipitator 5 from the technique described in Japanese Patent Application Laid-Open No. 60-227845. The temperature of the discharged exhaust gas is lowered, and the collecting performance of the electrostatic precipitator 5 is also improved. In addition, dust that has passed through the electrostatic precipitator 5 and the electric precipitator 5
Since the SPM and mist that cannot be completely collected can be collected by the dry desulfurization device 8, the collection performance of the entire processing device is significantly improved.
【００１９】排ガスの脱硝処理を行う必要がある場合
は、ガス冷却器４より上流側に脱硝処理装置を配置すれ
ばよい。あるいは、乾式脱硫装置８手前でアンモニアを
注入することによって脱硫・脱硝の同時処理を行っても
よい。When it is necessary to perform the denitration treatment of the exhaust gas, a denitration treatment device may be arranged upstream of the gas cooler 4. Alternatively, simultaneous treatment of desulfurization and denitration may be performed by injecting ammonia before the dry desulfurization device 8.
【００２０】乾式脱硫装置８内で吸着処理に使用した炭
素質吸着剤は不活性ガス雰囲気中で加熱することにより
吸着物を脱離分解して再生したうえで再使用することが
可能である。この炭素質吸着剤としては、石炭等の炭素
含有物質にバインダを添加して成形後、熱処理又は水蒸
気、空気などで賦活して得られる活性炭、活性コーク
ス、活性チャーなどを用いることができ、これらにバナ
ジウム、鉄、銅等の化合物を担持させた物も好適に使用
することができる。The carbonaceous adsorbent used for the adsorption treatment in the dry desulfurization unit 8 can be reused after heating and desorbing and decomposing the adsorbed material in an inert gas atmosphere. As the carbonaceous adsorbent, activated carbon, activated coke, activated char, and the like obtained by adding a binder to a carbon-containing substance such as coal, forming, and then performing heat treatment or activation with steam, air, or the like can be used. A material in which a compound such as vanadium, iron, copper or the like is supported can also be suitably used.
【００２１】図３は、ガス冷却器４の冷媒としてボイラ
ー１の復水器冷却水を使用した場合の冷却水系の熱収支
を表している。エアヒーター３出口における排ガスの流
量を３×１０6ｍ3（標準状態）／ｈ、その温度を１４０
℃、フライアッシュ濃度を２０ｇ／ｍ3（標準状態）、
水分を１０ｖｏｌ％とし、復水器１１へラインＬ１１に
より供給する海水の流量を１．６２×１０5ｍ3／ｈ、そ
の水温を２０℃、復水器１１からの出口（ラインＬ１
２）における海水温を２７℃とする。ガスクーラー４に
おいて、排ガスを６０℃まで冷却するためには、復水器
１１から出た海水のうち、わずか０．０１７５％にすぎ
ない２８．３ｍ3／ｈをラインＬ１２から分岐したライ
ンＬ１３によりガスクーラー４に供給すればよく、ガス
クーラー４における冷媒である海水の温度上昇も３℃に
すぎない。この海水はラインＬ１４によりラインＬ１２
へと戻されて混合後に海へと放水されるが、混合後の海
水温の上昇は、わずか０．０００５℃にすぎず、その温
度上昇は無視でき、環境への影響も少ない。FIG. 3 shows the heat balance of the cooling water system when the condenser cooling water of the boiler 1 is used as the refrigerant of the gas cooler 4. The flow rate of the exhaust gas at the outlet of the air heater 3 is 3 × 10 6 m 3 (standard state) / h, and the temperature is 140
° C, fly ash concentration 20 g / m 3 (standard condition),
The water content is 10 vol%, the flow rate of seawater supplied to the condenser 11 through the line L11 is 1.62 × 10 5 m 3 / h, the water temperature is 20 ° C., and the outlet from the condenser 11 (line L1
The seawater temperature in 2) is 27 ° C. In the gas cooler 4, in order to cool the exhaust gas to 60 ° C., only 20.0 m 3 / h of only 0.0175% of the seawater discharged from the condenser 11 is branched by the line L 13 branched from the line L 12. What is necessary is just to supply to the gas cooler 4, and the temperature rise of the seawater which is a refrigerant in the gas cooler 4 is only 3 degreeC. This seawater is supplied to line L12 by line L14.
The water is discharged back to the sea after mixing, but the seawater temperature rise after mixing is only 0.0005 ° C, and the temperature rise is negligible and has little effect on the environment.
【００２２】[0022]
【発明の効果】以上説明したように本発明によれば、乾
式脱硫装置における脱硫性能が発揮できる温度範囲に排
ガス温度を制御しているので、脱硫性能の向上が図れ
る。また、電気集塵機で捕集しきれなかったダスト、SP
M類も乾式脱硫装置により捕集することができるので、
除塵性能も向上する。As described above, according to the present invention, since the exhaust gas temperature is controlled within a temperature range in which the desulfurization performance in the dry desulfurization device can be exhibited, the desulfurization performance can be improved. Dust and SP that could not be collected by the electric dust collector
Since Ms can also be collected by a dry desulfurizer,
Dust removal performance is also improved.
【図１】本発明に係る石炭焚きボイラー用排ガス処理装
置を示す全体ブロック図である。FIG. 1 is an overall block diagram illustrating an exhaust gas treatment device for a coal-fired boiler according to the present invention.
【図２】乾式脱硫装置における排ガス温度と脱硫率の関
係を示すグラフである。FIG. 2 is a graph showing a relationship between an exhaust gas temperature and a desulfurization rate in a dry desulfurization apparatus.
【図３】本発明に係る石炭焚きボイラー用排ガス処理装
置における冷媒の熱収支を表す図である。FIG. 3 is a diagram illustrating a heat balance of a refrigerant in an exhaust gas treatment device for a coal-fired boiler according to the present invention.
１…ボイラー、２…脱硝装置、３…エアヒーター、４…
ガス冷却器、５…電気集塵機、６…排ガス温度計、７…
制御装置、８…乾式脱硫装置、９…煙突、Ｌ１〜Ｌ６…
排ガスライン、Ｌ１１〜Ｌ１３…給排水ライン。DESCRIPTION OF SYMBOLS 1 ... Boiler, 2 ... Denitrification apparatus, 3 ... Air heater, 4 ...
Gas cooler, 5 ... Electric dust collector, 6 ... Exhaust gas thermometer, 7 ...
Control device, 8: Dry desulfurization device, 9: Chimney, L1 to L6 ...
Exhaust gas line, L11 to L13 ... supply / drain line.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｂ０３Ｃ 3/013 Ｂ０１Ｄ 53/34 １２３Ｂ 3/01 Ｂ０３Ｃ 3/01 Ｂ Ｆ２２Ｂ 35/00 Ｚ 37/00 Ｆ２３Ｊ 15/00 Ａ Ｆ２３Ｊ 15/00 Ｂ (72)発明者 山本 卓也 神奈川県平塚市夕陽ヶ丘63番30号 住友重 機械工業株式会社平塚事業所内 (72)発明者 後藤 浩平 神奈川県平塚市夕陽ヶ丘63番30号 住友重 機械工業株式会社平塚事業所内 (72)発明者 山田 愼一 神奈川県平塚市夕陽ヶ丘63番30号 住友重 機械工業株式会社平塚事業所内 (72)発明者 三重野 光博 神奈川県平塚市夕陽ヶ丘63番30号 住友重 機械工業株式会社平塚事業所内 (72)発明者 田中 建夫 東京都田無市谷戸町ニ丁目１番１号 住友 重機械工業株式会社田無製造所内 Ｆターム(参考） 3K070 DA02 DA03 DA07 DA09 DA14 DA22 DA23 DA24 DA30 DA35 DA58 3L021 BA01 DA28 4D002 AA02 AA12 AB01 AC01 BA04 BA13 BA14 CA08 CA11 CA13 DA07 DA41 EA02 EA08 GA01 GB03 4D054 AA04 EA21 EA24 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat ゛ (Reference) B03C 3/013 B01D 53/34 123B 3/01 B03C 3/01 B F22B 35/00 Z 37/00 F23J 15 / 00 A F23J 15/00 B (72) Inventor Takuya Yamamoto 63-30 Yuyugaoka, Hiratsuka-shi, Kanagawa Prefecture Sumitomo Heavy Industries Machinery Co., Ltd. Hiratsuka Works (72) Inventor Kohei Goto 63 Yuyugaoka, Hiratsuka-shi, Kanagawa No. 30 Sumitomo Heavy Industries Machinery Co., Ltd. Hiratsuka Works (72) Inventor Shinichi Yamada 63-30 Yuyogaoka Hiratsuka-shi, Kanagawa Prefecture Sumitomo Heavy Industries Machinery Co., Ltd. Hiratsuka Works (72) Inventor Mitsuhiro Mieno Hiratsuka-shi, Kanagawa Prefecture 63-30, Yuhigaoka Sumitomo Heavy Industries Machinery Co., Ltd. Hiratsuka Works (72) Inventor Tateo Tanaka 1-1, Yatocho, Tanashi-shi, Tokyo Sumitomo Shigeru械工 Industry Co., Ltd. Tanashiseizosho in the F-term (reference) 3K070 DA02 DA03 DA07 DA09 DA14 DA22 DA23 DA24 DA30 DA35 DA58 3L021 BA01 DA28 4D002 AA02 AA12 AB01 AC01 BA04 BA13 BA14 CA08 CA11 CA13 DA07 DA41 EA02 EA08 GA01 GB03 4D054 AA04 EA21 EA24
Claims (4)
器と、電気集塵機と、乾式脱硫装置とを直列に接続して
構成されている石炭焚きボイラー用排ガス処理装置であ
って、 前記乾式脱硫装置への入口排ガス温度が水露点温度を超
え、かつ、１２０℃以下となるようガス冷却器の冷却能
力を制御する制御装置を備えている石炭焚きボイラー用
排ガス処理装置。1. An exhaust gas treatment apparatus for a coal-fired boiler, comprising a denitration device, an air heater, a gas cooler, an electric dust collector, and a dry desulfurization device connected in series, wherein the dry desulfurization is performed. An exhaust gas treatment device for a coal-fired boiler, comprising: a control device for controlling a cooling capacity of a gas cooler so that an exhaust gas temperature at an inlet of the device exceeds a water dew point temperature and is 120 ° C. or less.
量を制御することでその冷却能力を制御可能である請求
項１記載の石炭焚きボイラー用排ガス処理装置。2. An exhaust gas treatment apparatus for a coal-fired boiler according to claim 1, wherein said gas cooler is a water-cooled type, and its cooling capacity can be controlled by controlling a flow rate of a refrigerant.
ーの復水器冷却水であることを特徴とする請求項２記載
の石炭焚きボイラー用排ガス処理装置。3. The exhaust gas treatment device for a coal-fired boiler according to claim 2, wherein the refrigerant of the gas cooler is condenser cooling water of a coal-fired boiler.
塵機と、乾式脱硫装置とを直列に接続して構成されてい
る石炭焚きボイラー用排ガス処理装置であって、 前記乾式脱硫装置への入口排ガス温度が水露点温度を超
え、かつ、１２０℃以下となるようガス冷却器の冷却能
力を制御する制御装置を備えている石炭焚きボイラー用
排ガス処理装置。4. An exhaust gas treatment device for a coal-fired boiler, comprising an air heater, a gas cooler, an electric precipitator, and a dry desulfurizer connected in series, wherein an inlet to the dry desulfurizer is provided. An exhaust gas treatment device for a coal-fired boiler, comprising a control device for controlling a cooling capacity of a gas cooler such that an exhaust gas temperature exceeds a water dew point temperature and becomes 120 ° C. or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000199255A JP2002022140A (en) | 2000-06-30 | 2000-06-30 | Apparatus for exhaust-gas treatment for coal fired boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000199255A JP2002022140A (en) | 2000-06-30 | 2000-06-30 | Apparatus for exhaust-gas treatment for coal fired boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002022140A true JP2002022140A (en) | 2002-01-23 |
Family
ID=18697303
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000199255A Pending JP2002022140A (en) | 2000-06-30 | 2000-06-30 | Apparatus for exhaust-gas treatment for coal fired boiler |
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| Country | Link |
|---|---|
| JP (1) | JP2002022140A (en) |
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|---|---|---|---|---|
| JP2003286020A (en) * | 2002-03-27 | 2003-10-07 | Electric Power Dev Co Ltd | Highly activated active coke powder and manufacturing method thereof |
| WO2005030641A1 (en) * | 2003-09-26 | 2005-04-07 | Electric Power Development Co., Ltd. | Highly activated coke powder and process for producing the same |
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| JP2006308269A (en) * | 2004-11-29 | 2006-11-09 | Mitsubishi Heavy Ind Ltd | Heat recovery equipment |
| CN101368733B (en) * | 2008-09-27 | 2012-02-22 | 庞文库 | Flue gas drying method for boiler |
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2000
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003286020A (en) * | 2002-03-27 | 2003-10-07 | Electric Power Dev Co Ltd | Highly activated active coke powder and manufacturing method thereof |
| WO2005030641A1 (en) * | 2003-09-26 | 2005-04-07 | Electric Power Development Co., Ltd. | Highly activated coke powder and process for producing the same |
| JP2006308269A (en) * | 2004-11-29 | 2006-11-09 | Mitsubishi Heavy Ind Ltd | Heat recovery equipment |
| US8099959B2 (en) | 2004-11-29 | 2012-01-24 | Mitsubishi Heavy Industries, Ltd. | Heat recovery equipment |
| US8209985B2 (en) | 2004-11-29 | 2012-07-03 | Mitsubishi Heavy Industries, Ltd. | Heat recovery equipment |
| JP2006232828A (en) * | 2005-01-28 | 2006-09-07 | Lion Corp | Hair growing tonic, hair growing tonic composition and method of hair growth and restoration |
| CN101368733B (en) * | 2008-09-27 | 2012-02-22 | 庞文库 | Flue gas drying method for boiler |
| KR20140017567A (en) | 2011-02-02 | 2014-02-11 | 리켄 비타민 가부시키가이샤 | Method for processing seafood extract, seafood extract, food and drink |
| CN103542420A (en) * | 2013-10-29 | 2014-01-29 | 上海和衡能源科技发展有限公司 | Heat transfer device and method for coal fired boiler flue gas containing sulfur trioxide |
| CN111389166A (en) * | 2020-04-21 | 2020-07-10 | 南通九洲环保科技有限公司 | Hazardous waste incinerator tail gas purification process |
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