JPH11104446A - Wet exhaust gas desulfurization apparatus - Google Patents
Wet exhaust gas desulfurization apparatusInfo
- Publication number
- JPH11104446A JPH11104446A JP9269909A JP26990997A JPH11104446A JP H11104446 A JPH11104446 A JP H11104446A JP 9269909 A JP9269909 A JP 9269909A JP 26990997 A JP26990997 A JP 26990997A JP H11104446 A JPH11104446 A JP H11104446A
- Authority
- JP
- Japan
- Prior art keywords
- exhaust gas
- absorption tower
- hot
- boiler
- spray nozzle
- 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.)
- Pending
Links
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 26
- 230000023556 desulfurization Effects 0.000 title claims abstract description 26
- 239000007921 spray Substances 0.000 claims abstract description 57
- 239000000498 cooling water Substances 0.000 claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000005507 spraying Methods 0.000 claims abstract description 15
- 239000007789 gas Substances 0.000 claims description 43
- 238000010521 absorption reaction Methods 0.000 claims description 42
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 19
- 239000003546 flue gas Substances 0.000 claims description 19
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical class S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 claims description 5
- 229910052815 sulfur oxide Inorganic materials 0.000 claims description 5
- 238000002485 combustion reaction Methods 0.000 claims description 3
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000001816 cooling Methods 0.000 description 14
- 239000007788 liquid Substances 0.000 description 6
- 238000010248 power generation Methods 0.000 description 3
- 239000003595 mist Substances 0.000 description 2
- 230000010485 coping Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000003685 thermal hair damage Effects 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、排煙脱硫装置に関
し、特に、ボイラの運転停止中におけるホットバンキン
グ時に吸収塔内へ流入する高温排ガスを冷却させるのに
好適な排煙脱硫装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flue gas desulfurization apparatus, and more particularly to a flue gas desulfurization apparatus suitable for cooling high-temperature exhaust gas flowing into an absorption tower during hot banking while a boiler is not operating.
【０００２】[0002]
【従来の技術】近年、地球を取り巻く自然環境は悪化し
てきており、中でも世界各地に設置された火力発電所か
ら排出されるＳＯ2ガスは、その絶対量も多いことから
環境に与える影響も大きいと考えられ、排煙脱硫装置を
用いたＳＯ2ガス放出量を低減することが環境汚染対策
を行っていく上で重要な課題となっている。In recent years, and the natural environment surrounding the earth has deteriorated, among others SO 2 gas emitted from the installed thermal power plants worldwide is larger impact on the environment since the absolute amount of many It is considered that reducing SO 2 gas emission using a flue gas desulfurization apparatus is an important issue in taking environmental pollution countermeasures.
【０００３】通常のボイラは、定期点検を行う時のよう
に長期間ボイラ運転を停止する場合はボイラ内を強制冷
却する。しかしそれ以外の短期間のボイラ運転停止時に
は、ボイラ再起動を容易にするために、ボイラ内の温度
を低下させないように、ボイラ入口及び出口のダンパー
を閉めてボイラより熱が逃げないように、ボイラ内を締
め切り、保温するホットバンキング状態にしている。In a normal boiler, when the operation of the boiler is stopped for a long period of time, such as when performing a periodic inspection, the inside of the boiler is forcibly cooled. However, during other short-term boiler operation shutdown, in order to facilitate boiler restart, close the boiler inlet and outlet dampers so that heat does not escape from the boiler so as not to lower the temperature inside the boiler. The inside of the boiler is closed and the hot banking condition is maintained.
【０００４】しかし、ボイラ出入口のダンパーを閉じて
もボイラ内の完全密閉は不可能であり、閉めたダンパー
部分から少しではあるが１２０〜１３０℃の高温排ガス
がリークしてくる。これにより、図２の従来技術の排煙
脱硫装置に示すように、吸収塔３へつながるボイラ１の
図示しない出口ダンパーよりリークした高温排ガスが吸
収塔３へ流れ込むことになる。ボイラ１の運転停止時に
は、図示しない発電設備が運転を停止しているので、排
煙脱硫装置の吸収塔３も運転を停止している。そのた
め、高温排ガスが吸収塔入口９から吸収塔３へ流れ込む
と、吸収塔３内の高温に耐えられない材質で製作されて
いる飛散ミスト回収用のデミスタ５等が損傷することに
なる。However, even if the damper at the entrance and exit of the boiler is closed, it is impossible to completely seal the inside of the boiler, and a small amount of high-temperature exhaust gas at 120 to 130 ° C. leaks from the closed damper. As a result, as shown in the conventional flue gas desulfurization apparatus of FIG. 2, high-temperature exhaust gas leaked from an outlet damper (not shown) of the boiler 1 connected to the absorption tower 3 flows into the absorption tower 3. When the operation of the boiler 1 is stopped, the power generation equipment (not shown) has stopped operating, so the operation of the absorption tower 3 of the flue gas desulfurization device has also stopped. Therefore, when high-temperature exhaust gas flows into the absorption tower 3 from the absorption tower inlet 9, the mist recovery mist collector 5 made of a material that cannot withstand high temperatures in the absorption tower 3 is damaged.
【０００５】これを防止するため、従来の排煙脱硫装置
には、ボイラ１の短期間の運転停止時には、ボイラ排ガ
スを排煙脱硫装置に送るファン２も停止し、ボイラ１か
らの高温排ガスが吸収塔３へ直接流れ込まないように、
ボイラ１と吸収塔３の間にバイパスライン１３が設けら
れており、ボイラ１からバイパスライン１３を経て煙突
１０へ排ガスが直接送られる。しかし、近年のプラント
においてはバイパスライン１３が設置されていない火力
発電プラントが建設されており、これらのプラントにお
いては火力発電プラントの運転停止時に吸収塔３への高
温排ガスが流入するのを防止するために吸収塔入口９に
設けられた緊急冷却スプレノズル６を起動して排ガスを
冷却する必要がある。In order to prevent this, in the conventional flue gas desulfurization apparatus, when the operation of the boiler 1 is stopped for a short time, the fan 2 for sending the boiler exhaust gas to the flue gas desulfurization apparatus is also stopped, and the high temperature exhaust gas from the boiler 1 is removed. In order not to flow directly into the absorption tower 3,
A bypass line 13 is provided between the boiler 1 and the absorption tower 3, and the exhaust gas is directly sent from the boiler 1 to the chimney 10 via the bypass line 13. However, in recent years, thermal power plants without the bypass line 13 are being constructed, and in these plants, high-temperature exhaust gas is prevented from flowing into the absorption tower 3 when the operation of the thermal power plant is stopped. Therefore, it is necessary to activate the emergency cooling spray nozzle 6 provided at the absorption tower inlet 9 to cool the exhaust gas.
【０００６】[0006]
【発明が解決しようとする課題】上記図２に示す従来技
術において、緊急冷却スプレノズル６から噴霧される水
量は、ボイラ１の最大負荷時の排ガス量に見合った容量
としている。短期間の運転停止時におけるホットバンキ
ング状態は通常夜間停止時の数時間から半日程度で終了
するため、ホットバンキングの時間内に緊急冷却スプレ
ノズル６からの冷却水を噴霧すると、噴霧水量が排ガス
中の硫黄酸化物吸収用の吸収液貯溜用の循環タンク７の
容量を超えてしまうおそれがある。また、この緊急冷却
スプレノズル６の噴霧時間は通常２〜３分程度であり、
上記のホットバンキングの時間に対応できるような冷却
水の噴霧容量を維持するためには大容量の冷却水タンク
１１を常備しておくことが必要となる。In the prior art shown in FIG. 2, the amount of water sprayed from the emergency cooling spray nozzle 6 is set to a capacity corresponding to the amount of exhaust gas at the maximum load of the boiler 1. Since the hot banking state at the time of short-time operation stoppage usually ends in several hours to about half a day from the time of the nighttime stoppage, when the cooling water from the emergency cooling spray nozzle 6 is sprayed during the hot banking time, the amount of sprayed water is There is a possibility that the capacity of the circulation tank 7 for storing the absorption liquid for absorbing sulfur oxides may be exceeded. The spray time of the emergency cooling spray nozzle 6 is usually about 2 to 3 minutes,
In order to maintain the spray volume of the cooling water capable of coping with the hot banking time, it is necessary to always have a large-capacity cooling water tank 11.
【０００７】このように、近年は図２に示すバイパスラ
イン１３を設けない火力発電プラントが建設されるよう
になり、しかもそのような場合における緊急冷却スプレ
ノズル６を設けると大容量の冷却水タンク１１を備える
ことが必要となる不具合がある。そこで本発明の課題
は、ボイラのホットバンキング時における排煙脱硫装置
の効果的な冷却を行うことである。As described above, in recent years, thermal power plants without the bypass line 13 shown in FIG. 2 have been constructed, and when the emergency cooling spray nozzle 6 is provided in such a case, the large capacity cooling water tank 11 is provided. There is a problem that needs to be provided. Accordingly, an object of the present invention is to provide effective cooling of a flue gas desulfurization device during hot banking of a boiler.
【０００８】[0008]
【課題を解決するための手段】本発明の上記課題は、次
の構成により解決される。すなわち、本発明は燃焼装置
から排出される排ガスを吸収塔に導き、排ガス中の硫黄
酸化物を吸収液と接触させる湿式排煙脱硫装置におい
て、吸収塔の排ガス入口ダクト内に冷却水を噴霧するた
めのホットバンキング用スプレノズルを設けた湿式排煙
脱硫装置である。The above object of the present invention is attained by the following constitution. That is, in the present invention, in a wet flue gas desulfurization device in which exhaust gas discharged from a combustion device is guided to an absorption tower and sulfur oxides in the exhaust gas are brought into contact with an absorbing solution, cooling water is sprayed into an exhaust gas inlet duct of the absorption tower. Wet flue gas desulfurization apparatus provided with a spray nozzle for hot banking.
【０００９】ここで、吸収塔の排ガス入口ダクト内に冷
却水を噴霧するためのホットバンキング用スプレノズル
からホットバンキング時の排ガス温度を吸収塔内の設備
が損傷しない程度の温度に冷却するのに十分な水量を噴
霧する冷却水噴霧量調整手段をホットバンキング用スプ
レノズルの給水系に設けることが望ましい。Here, the spray nozzle for hot banking for spraying cooling water into the exhaust gas inlet duct of the absorption tower is sufficient to cool the exhaust gas temperature during hot banking to a temperature at which equipment in the absorption tower is not damaged. It is desirable to provide a cooling water spray amount adjusting means for spraying a large amount of water in the water supply system of the spray nozzle for hot banking.
【００１０】また、本発明は上記吸収塔の排ガス入口ダ
クト内に冷却水を噴霧するためのホットバンキング用ス
プレノズルと共にボイラ運用中に脱硫装置が停止した際
に緊急用として冷却水を噴霧する緊急用スプレノズルと
を設けた湿式排煙脱硫装置も含む。[0010] The present invention also provides a spray nozzle for hot banking for spraying cooling water into an exhaust gas inlet duct of the absorption tower and an emergency spraying cooling water for emergency use when a desulfurization unit is stopped during operation of a boiler. It also includes a wet flue gas desulfurization device provided with a spray nozzle.
【００１１】[0011]
【作用】本発明において、ボイラと吸収塔間にバイパス
ラインを設けないプラントにおいても、新たに吸収塔入
口ダクト付近に緊急冷却用スプレノズルとは別に、新た
にホットバンキング用スプレノズルを設置することによ
り、上記従来技術で問題となっているホットバンキング
時の高温排ガスを冷却することができる。In the present invention, even in a plant in which a bypass line is not provided between a boiler and an absorption tower, a new spray nozzle for hot banking is installed separately from a spray nozzle for emergency cooling near the absorption tower inlet duct. It is possible to cool high-temperature exhaust gas generated during hot banking, which is a problem in the above-described conventional technology.
【００１２】ホットバンキング用スプレノズルからは、
数時間から半日程度のボイラの一時運転停止中にボイラ
側から排出される高温排ガスに対して、循環タンク内の
容量を超えることなく、なおかつ、例えば１２０〜１３
０℃であるホットバンキング時の高温排ガスを約８０℃
以下まで下げるのに十分なスプレ水量を噴霧することに
より、ホットバンキング時に吸収塔内に流入する高温排
ガスを冷却することができる。From the spray nozzle for hot banking,
With respect to the high-temperature exhaust gas discharged from the boiler side during the temporary stoppage of the boiler for several hours to half a day, the capacity of the boiler does not exceed the capacity in the circulation tank and, for example, 120 to 13
Approximately 80 ° C high-temperature exhaust gas during hot banking at 0 ° C
By spraying a sufficient amount of spray water to lower the temperature to below, it is possible to cool the high-temperature exhaust gas flowing into the absorption tower during hot banking.
【００１３】これにより、ボイラと吸収塔間にバイパス
ラインを設けないプラントにおいても、ボイラのホット
バンキング中に、吸収塔内に流れ込む高温排ガスを問題
なく冷却することが可能となり、吸収塔内のライニング
やデミスタ等を熱損傷から守ることができる。[0013] Thus, even in a plant in which a bypass line is not provided between the boiler and the absorption tower, the high-temperature exhaust gas flowing into the absorption tower can be cooled without any problem during hot banking of the boiler. And demisters can be protected from thermal damage.
【００１４】また、ホットバンキング用スプレノズルの
他に緊急用スプレノズルを吸収塔入口ダクトに設けてお
くと、緊急に吸収塔流入排ガスを冷却するのに十分な量
の冷却水を噴出させることができる。If an emergency spray nozzle is provided in the inlet duct of the absorption tower in addition to the spray nozzle for hot banking, a sufficient amount of cooling water for urgently cooling the exhaust gas flowing into the absorption tower can be jetted.
【００１５】[0015]
【発明の実施の形態】本発明の実施の形態を図１に示
す。図１に示すようにボイラから排出する排ガスの排煙
脱硫装置は、図２に示した装置と同様なものであり、当
該排煙脱硫装置を構成する部材などは図２に示したもの
と同一であるので、それらの説明は省略するが、図１に
示すプラントにはボイラ１と脱硫装置の吸収塔３の間に
図２に示すバイパスライン１３を設けない。FIG. 1 shows an embodiment of the present invention. As shown in FIG. 1, the flue gas desulfurization device for the exhaust gas discharged from the boiler is the same as the device shown in FIG. 2, and the members constituting the flue gas desulfurization device are the same as those shown in FIG. Therefore, the description thereof is omitted, but the plant shown in FIG. 1 is not provided with the bypass line 13 shown in FIG. 2 between the boiler 1 and the absorption tower 3 of the desulfurization unit.
【００１６】図１において、ボイラ１からの排ガスは入
口ダクト９から吸収塔１内に導入され、スプレノズル４
から噴霧される吸収液と接触する。排ガス中の硫黄酸化
物とばいじんを吸収、除去した吸収液は循環タンク７に
一旦貯留された後、循環ポンプ８によりスプレノズル４
に循環供給される。In FIG. 1, the exhaust gas from the boiler 1 is introduced from an inlet duct 9 into the absorption tower 1, and the spray nozzle 4
Contact with absorbing liquid sprayed from. The absorbing solution that has absorbed and removed sulfur oxides and dust in the exhaust gas is once stored in a circulation tank 7 and then sprayed by a spray pump 4 by a circulation pump 8.
To be circulated.
【００１７】また、吸収塔３の排ガス入口ダクト９内に
冷却水を噴霧するためのホットバンキング用スプレノズ
ル１４からホットバンキング時の排ガス温度を吸収塔内
の設備が損傷しない程度の温度に冷却するのに十分な水
量を噴霧する冷却水噴霧量調整手段１５をホットバンキ
ング用スプレノズル１４の給水系に設ける。したがっ
て、ボイラ１が短時間、運転停止したホットバンキング
状態の時、ボイラ側より流れ出る高温排ガスを冷却する
ために、吸収塔入口ダクト９に設置するホットバンキン
グ用スプレノズル１４から予め定められた液量を噴霧さ
せることができる。前記予め定められた液量とは、循環
タンク内の容量を超えず、なおかつ、１２０〜１３０℃
あるホットバンキング時の高温排ガスを約８０℃以下ま
で下げるのに十分な噴霧量である。ホットバンキング用
スプレノズル１４には濾液ラインまたは工業用水ライン
等からの冷却水を導き、吸収塔入口ダクト９内の高温排
ガスに向けて噴霧する。Also, the temperature of the exhaust gas during hot banking is cooled from the spray nozzle 14 for hot banking for spraying cooling water into the exhaust gas inlet duct 9 of the absorption tower 3 to a temperature at which equipment in the absorption tower is not damaged. The cooling water spray amount adjusting means 15 for spraying a sufficient amount of water is provided in the water supply system of the spray nozzle 14 for hot banking. Therefore, when the boiler 1 is in the hot banking state in which the operation is stopped for a short time, in order to cool the high-temperature exhaust gas flowing out from the boiler side, a predetermined liquid amount is discharged from the hot banking spray nozzle 14 installed in the absorption tower inlet duct 9. Can be sprayed. The predetermined amount of the liquid does not exceed the capacity in the circulation tank and is set at 120 to 130 ° C.
The spray amount is sufficient to lower the high-temperature exhaust gas during hot banking to about 80 ° C. or less. Cooling water from a filtrate line or an industrial water line is guided to the hot banking spray nozzle 14 and sprayed toward high-temperature exhaust gas in the absorption tower inlet duct 9.
【００１８】こうして吸収塔３内に流れ込む高温排ガス
を約８０℃以下に冷却することができ、吸収塔３内のラ
イニングやデミスタ５等を熱損傷から防止することがで
きる。通常の吸収塔入口ダクト９にはスプレ水用タンク
１１から供給される緊急冷却スプレノズル６を設置して
いるが、このスプレノズル６は緊急用であり、ボイラの
最大負荷時の排ガス量に対応したスプレ容量を確保でき
るような容量のスプレ水用タンク１１が設置されてい
る。Thus, the high-temperature exhaust gas flowing into the absorption tower 3 can be cooled to about 80 ° C. or less, and the lining, the demister 5 and the like in the absorption tower 3 can be prevented from being damaged by heat. The ordinary absorption tower inlet duct 9 is provided with an emergency cooling spray nozzle 6 supplied from a spray water tank 11, but this spray nozzle 6 is for emergency use and has a spray nozzle corresponding to the amount of exhaust gas at the maximum load of the boiler. A spray water tank 11 having a capacity sufficient to secure a capacity is provided.
【００１９】また、図示していないが緊急冷却スプレノ
ズル６をホットバンキング用スプレノズル１４と兼用と
し、緊急冷却スプレノズル６の給水系に冷却水噴霧量調
整手段１５を設け、十分な容量のスプレ水用タンク１１
からの給水をホットバンキング時の冷却水として使用し
てもよい。Although not shown, the emergency cooling spray nozzle 6 is also used as a hot banking spray nozzle 14, and a cooling water spray amount adjusting means 15 is provided in a water supply system of the emergency cooling spray nozzle 6, and a sufficient capacity spray water tank is provided. 11
May be used as cooling water during hot banking.
【００２０】このため、図２に示すバイパスライン１３
を設けない火力発電設備においては、予め定められた容
量の循環タンク７より少ない容量で、なおかつ、１２０
〜１３０℃あるホットバンキング時の高温排ガスを約８
０℃以下まで下げるのに十分な噴霧量を噴霧させる新た
なホットバンキング用スプレノズル１４を緊急冷却スプ
レノズル６とは別途作動するように設けた。For this reason, the bypass line 13 shown in FIG.
In the thermal power generation equipment not provided with the circulating tank 7, the capacity is smaller than that of the circulation tank 7 having a predetermined capacity, and
Approximately 8 high-temperature exhaust gases during hot banking
A new hot banking spray nozzle 14 for spraying a sufficient spray amount to lower the temperature to 0 ° C. or less was provided to operate separately from the emergency cooling spray nozzle 6.
【００２１】なお、本発明では吸収液のスプレノズル
配管の方式や構造、スプレノズル使用吸収液、スプ
レノズルの員数、形状、構造等の仕様により限定される
ものではなく、濡れ壁方式の排煙脱硫装置にも適用可能
である。It should be noted that the present invention is not limited by the specifications of the type and structure of the spray nozzle pipe of the absorbing liquid, the absorbing liquid used by the spray nozzle, the number, shape and structure of the spray nozzle. Is also applicable.
【００２２】[0022]
【発明の効果】本発明によれば、吸収塔入口ダクト付近
にホットバンキング用スプレノズルを設けることによ
り、長期間安定した脱硫性能が維持でき、かつ、より低
廉型の火力発電設備を設置することができる。According to the present invention, by providing a spray nozzle for hot banking near the inlet duct of the absorption tower, stable desulfurization performance can be maintained for a long time, and a cheaper thermal power generation facility can be installed. it can.
【図１】 本発明の実施の形態の排煙脱硫装置の概略図
である。FIG. 1 is a schematic view of a flue gas desulfurization apparatus according to an embodiment of the present invention.
【図２】 従来技術の排煙脱硫装置の概略図である。FIG. 2 is a schematic view of a conventional flue gas desulfurization apparatus.
１ ボイラ ２ ファン ３ 吸収塔 ４ スプレノズル ５ デミスタ ６ 緊急冷却スプレノ
ズル ７ 循環タンク ８ 循環ポンプ ９ 吸収塔入口ダクト １０ 煙突 １１ スプレ水用タンク １３ バイパスライン １４ ホットバンキング用スプレノズル １５ 冷却水噴霧量調整手段Reference Signs List 1 boiler 2 fan 3 absorption tower 4 spray nozzle 5 demister 6 emergency cooling spray nozzle 7 circulation tank 8 circulation pump 9 absorption tower entrance duct 10 chimney 11 spray water tank 13 bypass line 14 hot banking spray nozzle 15 cooling water spray amount adjusting means
Claims (3)
に導き、排ガス中の硫黄酸化物を吸収液と接触させる湿
式排煙脱硫装置において、吸収塔の排ガス入口ダクト内
に冷却水を噴霧するためのホットバンキング用スプレノ
ズルを設けたことを特徴とする湿式排煙脱硫装置。In a wet flue gas desulfurization device for guiding exhaust gas discharged from a combustion device to an absorption tower and bringing sulfur oxides in the exhaust gas into contact with an absorbing solution, cooling water is sprayed into an exhaust gas inlet duct of the absorption tower. Wet flue gas desulfurization apparatus provided with a spray nozzle for hot banking.
噴霧するためのホットバンキング用スプレノズルからホ
ットバンキング時の排ガス温度を吸収塔内の設備が損傷
しない程度の温度に冷却するのに十分な水量を噴霧する
冷却水噴霧量調整手段をホットバンキングノズルへの給
水系に設けたことを特徴とする請求項１記載の湿式排煙
脱硫装置。2. A hot-banking spray nozzle for spraying cooling water into an exhaust-gas inlet duct of the absorption tower, which is sufficient to cool the exhaust-gas temperature during hot-banking to a temperature at which equipment in the absorption tower is not damaged. The wet flue gas desulfurization apparatus according to claim 1, wherein cooling water spray amount adjusting means for spraying the water amount is provided in a water supply system to the hot banking nozzle.
に導き、排ガス中の硫黄酸化物を吸収液と接触させる湿
式排煙脱硫装置において、吸収塔の排ガス入口ダクト内
に冷却水を噴霧するためのホットバンキング用スプレノ
ズルと共にボイラ運用中に脱硫装置が停止した際に緊急
用として冷却水を噴霧する緊急用スプレノズルとを設け
たことを特徴とする湿式排煙脱硫装置。3. In a wet flue gas desulfurization device in which exhaust gas discharged from a combustion device is guided to an absorption tower and sulfur oxides in the exhaust gas are brought into contact with an absorbing solution, cooling water is sprayed into an exhaust gas inlet duct of the absorption tower. An emergency spray nozzle for spraying cooling water as an emergency when the desulfurization unit stops during operation of the boiler, together with a spray nozzle for hot banking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9269909A JPH11104446A (en) | 1997-10-02 | 1997-10-02 | Wet exhaust gas desulfurization apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9269909A JPH11104446A (en) | 1997-10-02 | 1997-10-02 | Wet exhaust gas desulfurization apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11104446A true JPH11104446A (en) | 1999-04-20 |
Family
ID=17478919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9269909A Pending JPH11104446A (en) | 1997-10-02 | 1997-10-02 | Wet exhaust gas desulfurization apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11104446A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005296732A (en) * | 2004-04-07 | 2005-10-27 | Tousetsu:Kk | Detoxifying apparatus |
| CN116951433A (en) * | 2023-07-27 | 2023-10-27 | 合肥工业大学 | A kind of flue gas treatment system and its treatment method |
-
1997
- 1997-10-02 JP JP9269909A patent/JPH11104446A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005296732A (en) * | 2004-04-07 | 2005-10-27 | Tousetsu:Kk | Detoxifying apparatus |
| CN116951433A (en) * | 2023-07-27 | 2023-10-27 | 合肥工业大学 | A kind of flue gas treatment system and its treatment method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9341101B2 (en) | System for collecting carbon dioxide in flue gas | |
| JP6408812B2 (en) | Anti-icing system for gas turbine | |
| US5775266A (en) | Steam generator | |
| KR100612534B1 (en) | Exhaust gas processing device, and method of using the same | |
| WO2015064193A1 (en) | Gas turbine combined cycle power generation system | |
| WO2019159734A1 (en) | Denitration device, waste heat recovery boiler provided with same, gas turbine combined cycle power plant, and method of denitration | |
| JPH0426432Y2 (en) | ||
| US20200348045A1 (en) | Methods systems and devices for controlling temperature and humidity using excess energy from a combined heat and power system | |
| JPH11104446A (en) | Wet exhaust gas desulfurization apparatus | |
| JPH0828855A (en) | Exhaust gas desulfurizing apparatus | |
| US3473331A (en) | Incinerator-gas turbine cycle | |
| JP4969149B2 (en) | Ammonia injection device and method for exhaust heat recovery boiler | |
| JP3994075B2 (en) | Exhaust gas cooling device | |
| JP4453452B2 (en) | Method for removing impurities from gas turbine equipment and humidification system in gas turbine equipment | |
| KR102624232B1 (en) | Combined SCR System | |
| KR101974003B1 (en) | Reheater of desulfurization equipment with By-Pass Line | |
| KR101832895B1 (en) | SOx Reduction System For Ship And Operating Method Of That | |
| JP2000009308A (en) | Exhaust white smoke prevention device for water injection type gas turbine | |
| JP3853559B2 (en) | Corrosion prevention method for exhaust gas treatment equipment | |
| JP2016050679A (en) | Incineration equipment | |
| JP2014009835A (en) | Exhaust gas treatment apparatus | |
| CN109443017B (en) | Flue gas treatment system and operation method thereof | |
| JP4221790B2 (en) | Waste treatment equipment | |
| JP2001003711A (en) | Exhaust heat recovery boiler and method of operating exhaust heat recovery boiler | |
| US20210356170A1 (en) | Methods systems and devices for controlling temperature and humidity using excess energy from a combined heat and power system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20040728 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20050705 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20050826 |
|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20051101 |