JP2001157821A - Wet flue gas desulfurization equipment and method for operating the same - Google Patents
Wet flue gas desulfurization equipment and method for operating the sameInfo
- Publication number
- JP2001157821A JP2001157821A JP34514099A JP34514099A JP2001157821A JP 2001157821 A JP2001157821 A JP 2001157821A JP 34514099 A JP34514099 A JP 34514099A JP 34514099 A JP34514099 A JP 34514099A JP 2001157821 A JP2001157821 A JP 2001157821A
- Authority
- JP
- Japan
- Prior art keywords
- absorption tower
- internal support
- flue gas
- gas
- inlet
- 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.)
- Granted
Links
Landscapes
- Treating Waste Gases (AREA)
- Gas Separation By Absorption (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係
り、特に吸収塔のガス入口部に設けた内部サポート（入
口部ポスト）へのスケーリングを防止するのに好適な湿
式排煙脱硫装置とその運転方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flue gas desulfurization apparatus, and more particularly to a wet flue gas desulfurization apparatus suitable for preventing scaling to an internal support (entrance post) provided at a gas inlet of an absorption tower. It relates to the driving method.
【０００２】[0002]
【従来の技術】大気汚染防止のため、排ガス中の硫黄酸
化物の除去装置として、湿式石灰石−石膏脱硫装置が広
く実用化されている。この湿式石灰石−石膏脱硫装置の
従来技術を図３に示す。2. Description of the Related Art In order to prevent air pollution, wet limestone-gypsum desulfurization apparatuses are widely used as apparatuses for removing sulfur oxides in exhaust gas. FIG. 3 shows a conventional technique of this wet limestone-gypsum desulfurization apparatus.
【０００３】火力発電所のボイラ等から発生した硫黄酸
化物を含む排ガス１は脱硫装置の吸収塔２に導かれる。
吸収塔２では多数のスプレノズル４を備えたスプレヘッ
ダ３が設置されており、スプレノズル４から微細な液滴
として噴霧される吸収液と排ガス１を接触させること
で、排ガス中の硫黄酸化物は吸収液滴の表面で化学的に
除去される。排ガス流れに同伴する微小な液滴は吸収塔
２の上部に設置されたミストエリミネータ５で除去さ
れ、浄化ガス６は必要により吸収塔２の後流側に設置さ
れる図示していない再加熱設備により昇温されて、煙突
より大気中に排出される。[0003] Exhaust gas 1 containing sulfur oxides generated from a boiler or the like of a thermal power plant is led to an absorption tower 2 of a desulfurizer.
The absorption tower 2 is provided with a spray header 3 having a large number of spray nozzles 4. By contacting the absorption liquid sprayed as fine droplets from the spray nozzles 4 with the exhaust gas 1, the sulfur oxides in the exhaust gas are absorbed by the absorption liquid. Chemically removed at the surface of the drop. Small droplets accompanying the exhaust gas flow are removed by a mist eliminator 5 installed on the upper part of the absorption tower 2, and the purification gas 6 is installed on a downstream side of the absorption tower 2 as necessary, if necessary. , And is discharged from the chimney into the atmosphere.
【０００４】スプレノズル４から噴霧された大部分の液
滴は硫黄酸化物を吸収したのち吸収塔２の下部に設けら
れた吸収塔循環タンク７に落下する。吸収塔循環タンク
７からは循環ポンプ１７により再びスプレノズル４に送
られ、噴霧される。Most of the droplets sprayed from the spray nozzle 4 absorb the sulfur oxides and then fall into an absorption tower circulation tank 7 provided below the absorption tower 2. The water is again sent from the absorption tower circulation tank 7 to the spray nozzle 4 by the circulation pump 17 and sprayed.
【０００５】吸収液に吸収された硫黄酸化物（ＳＯ２）
は、吸収液中に含まれる石灰石（ＣａＣＯ３）と反応
し、さらに吸収塔循環タンク７に供給される空気８によ
って酸化されて石膏（ＣａＳＯ４・２Ｈ２Ｏ）となる。
吸収塔循環タンク７に供給される空気８は酸化用撹拌機
１８で吸収液をかきまぜることによって、前記酸化反応
が促進される。この一連の反応は下記式によって表され
る。 ＳＯ２＋２Ｈ２Ｏ＋ＣａＣＯ３＋１／２Ｏ２→ＣａＳＯ
４・２Ｈ２Ｏ＋ＣＯ２ [0005] Sulfur oxide (SO 2 ) absorbed in the absorbing solution
Reacts with limestone (CaCO 3 ) contained in the absorption liquid, and is further oxidized by air 8 supplied to the absorption tower circulation tank 7 to become gypsum (CaSO 4 .2H 2 O).
The air 8 supplied to the absorption tower circulation tank 7 is stirred by the oxidizing agitator 18 to absorb the absorbing liquid, thereby promoting the oxidizing reaction. This series of reactions is represented by the following formula. SO 2 + 2H 2 O + CaCO 3 + ／ O 2 → CaSO
4 · 2H 2 O + CO 2
【０００６】一方、吸収剤である石灰石９は石灰石供給
設備１０で石灰石スラリとして貯えられ、石灰石スラリ
ポンプ１１より吸収塔循環ランク７へ供給される。ま
た、吸収塔２内で生成した石膏を回収するため、吸収塔
循環タンク７内の吸収液の一部を抜出しポンプ１２によ
り石膏脱水設備１３に送液し、吸収液中に含まれている
石膏１４を煤塵と共に回収する。石膏１４および煤塵の
脱水ろ液は、系内に不純物が濃縮するのを防ぐため一部
を排水ライン１５を通って系外に排出され、残りの液は
石灰石供給設備１０において石灰石スラリ製造用補給水
として使用され、残りは吸収塔２の吸収塔循環タンク７
へ脱水ろ液ライン１６を経て送液される。On the other hand, limestone 9 as an absorbent is stored as limestone slurry in a limestone supply facility 10 and supplied to an absorption tower circulation rank 7 from a limestone slurry pump 11. Further, in order to collect the gypsum generated in the absorption tower 2, a part of the absorption liquid in the absorption tower circulation tank 7 is withdrawn and sent to the gypsum dewatering equipment 13 by the pump 12, and the gypsum contained in the absorption liquid is removed. 14 is collected together with the dust. Part of the dehydrated filtrate of gypsum 14 and dust is discharged out of the system through a drain line 15 to prevent impurities from being concentrated in the system, and the remaining liquid is supplied to a limestone supply facility 10 for limestone slurry production. The remaining water is used as water, and the rest is
The liquid is sent via a dehydration filtrate line 16 to the liquid.
【０００７】また、吸収塔２の排ガス入口部１９には、
その強度を確保するために内部サポート（入口部ポス
ト）２０（図４）が設置されている。The exhaust gas inlet 19 of the absorption tower 2 has
An internal support (entrance post) 20 (FIG. 4) is provided to secure the strength.
【０００８】脱硫装置の通常運転中は通ガスにより前記
入口部１９の内部サポート２０へは吸収液の飛散はあま
り生じないが、脱硫装置の起動時にはホットガスから吸
収塔２の内部を保護するため、先に循環ポンプ１７を起
動し、その後に通ガスを開始する。このため、脱硫装置
の起動開始から通ガスまでの間に吸収塔２でスプレされ
た吸収液の一部が入口部１９側へ再飛散するため、入口
部１９の内部サポート２０への石膏などのスケーリング
が生じていた。During normal operation of the desulfurization unit, the gas does not scatter the absorption liquid to the internal support 20 at the inlet 19 due to the passing gas. However, when the desulfurization unit is started, the interior of the absorption tower 2 is protected from hot gas. First, the circulating pump 17 is started, and thereafter, gas flow is started. For this reason, a part of the absorption liquid sprayed in the absorption tower 2 from the start of the desulfurization device to the passage of gas is re-sprayed to the inlet 19 side. Scaling had occurred.
【０００９】この入口部１９の内部サポート２０への石
膏スケール付着例を図４（図４（ａ）は入口部１９の内
部サポート２０に石膏スケール３１が付着した状態を示
す吸収塔平面断面図、図４（ｂ）は図４（ａ）のＡ−Ａ
線矢視図）に示すが、吸収塔２の入口部１９のガス流れ
断面方向に石膏スケール３１が成長してくるため、吸収
塔２の入口部１９の圧力損失が増大し、石膏スケール３
１の成長度合いが大きくなると、排ガス送風用の図示し
ないファンの容量をオーバーし、脱硫装置が運転不能と
なってしまう問題がある。FIG. 4 shows an example of the gypsum scale attached to the internal support 20 of the inlet 19 (FIG. 4 (a) is a plan sectional view of an absorption tower showing a state where the gypsum scale 31 is attached to the internal support 20 of the inlet 19; FIG. 4B is a sectional view taken along a line AA in FIG.
As shown in the figure, since the gypsum scale 31 grows in the gas flow cross-sectional direction of the inlet section 19 of the absorption tower 2, the pressure loss at the inlet section 19 of the absorption tower 2 increases, and the gypsum scale 3
When the degree of growth of 1 is large, the capacity of a fan (not shown) for blowing exhaust gas is exceeded, and there is a problem that the desulfurization device becomes inoperable.
【００１０】[0010]
【発明が解決しようとする課題】上記従来技術は、吸収
塔２でスプレされた吸収液の一部が吸収塔２の排ガス入
口部１９側へ再飛散するため、前記入口部１９の内部サ
ポート２０へのスケーリングが生じる問題があった。In the above prior art, a part of the absorbing solution sprayed in the absorption tower 2 re-sprays to the exhaust gas inlet 19 side of the absorption tower 2, so that the internal support 20 There was a problem that scaling to to occur.
【００１１】本発明の課題は、吸収塔のガス入口部に設
けられる内部サポートへのスケーリングを防止すること
にある。It is an object of the present invention to prevent scaling to an internal support provided at the gas inlet of an absorption tower.
【００１２】[0012]
【課題を解決するための手段】上記本発明の課題は、側
壁面に設けたガス入口部から導入した排ガスと塔内にお
いて接触させるために一段または複数段設けた排ガス中
の煤塵の除去および硫黄酸化物を吸収除去する吸収液噴
霧用の複数のスプレノズルを有するスプレヘッダを設け
た吸収塔と該吸収塔の下部に設けた硫黄酸化物を吸収し
て亜硫酸塩を生成した吸収液を一時貯留する吸収塔循環
タンクと該吸収塔循環タンクに空気を供給して該亜硫酸
塩を酸化した吸収液を循環ポンプにより再び上記吸収塔
へ再循環させる湿式排煙脱硫装置において、上記吸収塔
のガス入口部を支持する内部サポートを設け、該内部サ
ポートへのスケーリング防止用の水洗ラインを設けた湿
式排煙脱硫装置により解決される。SUMMARY OF THE INVENTION It is an object of the present invention to remove soot and sulfur in exhaust gas provided in one or more stages so as to be brought into contact with the exhaust gas introduced from a gas inlet provided on a side wall surface in a tower. An absorption tower provided with a spray header having a plurality of spray nozzles for spraying an absorption liquid for absorbing and removing oxides, and an absorption for temporarily storing an absorption liquid provided at a lower portion of the absorption tower, which absorbs sulfur oxides and generates sulfite. In a wet flue gas desulfurization apparatus in which air is supplied to a tower circulation tank and the absorption tower circulation tank to recirculate the oxidized absorbent of the sulfite to the absorption tower again by a circulation pump, the gas inlet of the absorption tower is The problem is solved by a wet flue gas desulfurization apparatus provided with an internal support for supporting and a washing line for preventing scaling of the internal support.
【００１３】前記スケーリング防止用の水洗ラインは、
吸収塔のガス入口部の上方部分と内部サポート全面に向
けてそれぞれ水洗水を噴霧するスプレノズルを設ける
か、または吸収塔のガス入口部に設けた内部サポートの
内部に水洗水を供給し、該サポートの上部から水洗水を
流出させる構成とすることにより達成される。[0013] The scaling-preventive washing line includes:
A spray nozzle for spraying washing water toward the upper part of the gas inlet of the absorption tower and the entire surface of the internal support is provided, or washing water is supplied to the inside of the internal support provided at the gas inlet of the absorption tower, and the support is provided. This is achieved by having a configuration in which the washing water flows out from the upper part.
【００１４】なお、湿式排煙脱硫装置の起動時に循環ポ
ンプ起動により内部サポートの水洗を開始し、通ガス開
始以降は吸収塔の水バランスが許容できる範囲で前記水
洗を行うことが効果的である。It is effective to start rinsing of the internal support by activating the circulation pump when the wet flue gas desulfurization apparatus is started, and to perform the rinsing as long as the water balance of the absorption tower is acceptable after the start of gas supply. .
【００１５】[0015]
【作用】湿式排煙脱硫装置の起動時に循環ポンプ起動に
より吸収塔のガス入口部の内部サポート（入口部ポス
ト）の水洗を開始し、通ガス開始以降は吸収塔の水バラ
ンスが許容できる範囲で前記内部サポートの水洗を行う
ことにより、ガス入口部の内部サポートへの石膏スケー
リングを防止することが可能となる。[Function] When the wet flue gas desulfurization unit is started, the circulation pump starts to start washing the internal support (entrance post) of the gas inlet of the absorption tower, and after the start of gas supply, the water balance of the absorption tower is within the allowable range. By washing the internal support with water, it is possible to prevent gypsum scaling of the internal support at the gas inlet.
【００１６】[0016]
【発明の実施の形態】本発明の実施の形態を図面ととも
に説明する。本発明の実施の形態の脱硫装置は図３に示
すものと同一であり、図１には本発明の実施の形態の吸
収塔の排ガス入口部の部分平面断面図（図１（ａ））と
図１（ａ）のＡ−Ａ線矢視図（図１（ｂ））を示す。Embodiments of the present invention will be described with reference to the drawings. The desulfurization apparatus according to the embodiment of the present invention is the same as that shown in FIG. 3, and FIG. 1 is a partial plan cross-sectional view (FIG. 1 (a)) of the exhaust gas inlet of the absorption tower according to the embodiment of the present invention. FIG. 1A is a view taken along line AA of FIG. 1A (FIG. 1B).
【００１７】吸収塔のガス入口部１９の内部の天井付近
に水洗水配管２１を設け、ガス入口部１９に鉛直方向に
複数本設けられた内部サポート２０に向けて洗浄水をス
プレするスプレノズル２２、２３が取り付けてある。ス
プレノズル２２、２３は内部サポート２０全体の前面を
水洗するノズル２２と内部サポート２０上部と吸収塔の
ガス入口部１９の天井面との境界を水洗するノズル２３
から構成されている。なお、内部サポート２０が複数設
けられている場合はそれぞれの内部サポート２０に対し
てスプレノズル２２、２３を設置している。A washing water pipe 21 is provided near the ceiling inside the gas inlet portion 19 of the absorption tower, and spray nozzles 22 for spraying washing water toward internal supports 20 provided vertically in the gas inlet portion 19 are provided. 23 is attached. The spray nozzles 22 and 23 are provided for washing the entire front surface of the internal support 20 with water, and the nozzle 23 for washing the boundary between the upper portion of the internal support 20 and the ceiling of the gas inlet 19 of the absorption tower.
It is composed of When a plurality of internal supports 20 are provided, spray nozzles 22 and 23 are provided for each of the internal supports 20.
【００１８】なお、水洗水配管２１から噴霧する水洗水
は脱硫装置運転中は常時スプレすることを基本とし、特
に脱硫装置の起動時に循環ポンプ１７を起動してから通
ガスするまでの間に水洗を実施することが望ましい。The rinsing water sprayed from the rinsing water pipe 21 is basically sprayed at all times during the operation of the desulfurization apparatus. In particular, the rinsing water is supplied between the time when the circulation pump 17 is started and the time when gas is passed when the desulfurization apparatus is started. It is desirable to carry out.
【００１９】スプレノズル２２、２３から噴霧された水
洗水により、ガス入口部１９に設けられた内部サポート
２０は水洗された状態となり、吸収液が内部サポート２
０に飛散しても水洗されるために内部サポート２０に石
膏スケール３１が生成することを防止できる。The internal support 20 provided at the gas inlet 19 is washed by the washing water sprayed from the spray nozzles 22 and 23, and the absorbing liquid is washed by the internal support 2
The gypsum scale 31 can be prevented from being formed on the internal support 20 because the gypsum scale 31 is washed with water even if it is scattered to zero.
【００２０】また、通ガス中は吸収塔２へ向かうガス流
れにより、内部サポート２０側へ飛散する吸収液は少な
いが、脱硫装置の起動時に循環ポンプ１７を起動してか
ら通ガスするまでの間は、吸収液をスプレノズル４から
噴霧することにより吸収塔のガス入口部１９側へも多く
の吸収液ミストが舞い上がり、内部サポート２０へも吸
収液ミストが付着する。この状態で通ガスした時に、内
部サポート２０に付着した吸収液がドライアップして石
膏スケール３１が生成する。During the passage of the gas, a small amount of the absorbing liquid is scattered toward the internal support 20 due to the gas flow toward the absorption tower 2. By spraying the absorbing liquid from the spray nozzle 4, a large amount of the absorbing liquid mist soars toward the gas inlet 19 of the absorption tower, and the absorbing liquid mist adheres to the internal support 20. When gas is passed in this state, the absorbent adhering to the internal support 20 is dried up, and the gypsum scale 31 is generated.
【００２１】このため、内部サポート２０のスケール３
１生成を防止するためには、特に脱硫装置の起動時に循
環ポンプ１７を起動してから通ガスするまでの間は水洗
を実施することが望ましい。また、脱硫装置の運転停止
時にも通ガス停止後に循環ポンプ１７を停止させるが、
この間も同様に内部サポート２０の水洗を実施すること
が望ましい。For this reason, the scale 3 of the internal support 20
In order to prevent the generation of 1, it is desirable to perform water washing particularly from the time when the circulation pump 17 is started to the time when gas is passed when the desulfurization device is started. In addition, when the operation of the desulfurization device is stopped, the circulation pump 17 is stopped after the gas supply is stopped.
During this time, it is desirable that the internal support 20 be similarly washed with water.
【００２２】本発明によるその他の実施の形態を図２に
示す。図２には、吸収塔２のガス入口部１９の部分平面
断面図（図２（ａ））と図２（ａ）のＡ−Ａ線矢視図
（図２（ｂ））と図２（ｂ）の円Ｂ内の拡大図（図２
（ｃ））を示す。FIG. 2 shows another embodiment of the present invention. FIG. 2 is a partial plan cross-sectional view of the gas inlet portion 19 of the absorption tower 2 (FIG. 2A), a view taken along the line AA of FIG. FIG. 2B is an enlarged view of the circle B (FIG. 2)
(C)) is shown.
【００２３】図２に示す吸収塔２の内部サポート２０
は、その内部が空洞になっており、水洗水は、入口部１
９の外側であって内部サポート２０の上方から内部サポ
ート２０の内側に水洗水配管２４から供給され、該サポ
ート２０の側面の高さ方向に複数設けた下向きに開口し
た小径管２５から内部サポート２０の外表面に流出させ
る構造となっている。The internal support 20 of the absorption tower 2 shown in FIG.
Has a hollow inside, and the washing water is
The inner support 20 is supplied from the washing water pipe 24 to the inside of the inner support 20 from above the inner support 20 from above and below the inner support 20, and from a plurality of downwardly opening small-diameter pipes 25 provided in the height direction of the side surface of the support 20. The structure is designed to flow out to the outer surface of the device.
【００２４】この構造により、図１に示すような吸収塔
入口部１９の内部に水洗水配管２１を設けることなく内
部サポート２０の水洗を実施することが可能となる。With this structure, it is possible to wash the internal support 20 without providing the washing water pipe 21 inside the absorption tower inlet 19 as shown in FIG.
【００２５】[0025]
【発明の効果】本発明によれば、吸収塔入口部の内部サ
ポートへの石膏スケール生成を防止でき、吸収塔のドラ
フトロス増加の問題を解決できる。特に、脱硫装置起動
停止を頻繁に繰り返すプラントに対して本発明は有効で
ある。According to the present invention, the formation of gypsum scale on the internal support at the inlet of the absorption tower can be prevented, and the problem of increasing the draft loss of the absorption tower can be solved. In particular, the present invention is effective for a plant in which the start and stop of the desulfurization device are frequently repeated.
【図１】 本発明の実施の形態の説明図FIG. 1 is an explanatory diagram of an embodiment of the present invention.
【図２】 本発明の他の実施の形態の説明図FIG. 2 is an explanatory view of another embodiment of the present invention.
【図３】 従来技術の説明図FIG. 3 is an explanatory view of a conventional technique.
【図４】 吸収塔入口サポートへの石膏スケール付着例
を示す図FIG. 4 is a diagram showing an example of gypsum scale adhesion to an absorption tower entrance support.
１ 排ガス ２ 吸収塔 ３ スプレヘッダ ４ スプレノズル ５ ミストエリミネータ ６ 浄化ガス ７ 吸収塔循環タンク ８ 空気 ９ 石灰石 １０ 石灰石供給設
備 １１ 石灰石スラリポンプ １２ 抜出しポンプ １３ 石膏脱水設備 １４ 石膏 １５ 排水ライン １６ 脱水ろ液ライ
ン １７ 循環ポンプ １８ 酸化用攪拌機 １９ ガス入口部 ２０ 内部サポート ２１、２４ 水洗水配管 ２２、２３ スプレ
ノズル ２５ 小径管 ３１ 石膏スケールDESCRIPTION OF SYMBOLS 1 Exhaust gas 2 Absorption tower 3 Spray header 4 Spray nozzle 5 Mist eliminator 6 Purification gas 7 Absorption tower circulation tank 8 Air 9 Limestone 10 Limestone supply equipment 11 Limestone slurry pump 12 Extraction pump 13 Gypsum dewatering equipment 14 Gypsum 15 Drainage line 16 Dehydration filtrate line 17 Circulation pump 18 Oxidizing stirrer 19 Gas inlet 20 Internal support 21, 24 Rinsing water pipe 22, 23 Spray nozzle 25 Small diameter pipe 31 Gypsum scale
───────────────────────────────────────────────────── フロントページの続き (72)発明者 大倉 一 広島県呉市宝町６番９号 バブコック日立 株式会社呉事業所内 Ｆターム(参考） 4D002 AA02 AB01 AC01 AC10 BA02 BA05 BA14 BA16 CA01 CA11 CA13 DA05 DA16 EA03 FA03 HA05 4D020 AA06 BA02 BA09 BB03 BB05 CB25 CC05 CC07 CC18 CC30 CD02 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Kazu Okura 6-9 Takara-cho, Kure-shi, Hiroshima Fab term in Babcock-Hitachi Kure Plant (reference) 4D002 AA02 AB01 AC01 AC10 BA02 BA05 BA14 BA16 CA01 CA11 CA13 DA05 DA16 EA03 FA03 HA05 4D020 AA06 BA02 BA09 BB03 BB05 CB25 CC05 CC07 CC18 CC18 CC30 CD02
Claims (4)
排ガスと塔内において接触させるために一段または複数
段設けた排ガス中の煤塵の除去および硫黄酸化物を吸収
除去する吸収液噴霧用の複数のスプレノズルを有するス
プレヘッダを設けた吸収塔と該吸収塔の下部に設けた硫
黄酸化物を吸収して亜硫酸塩を生成した吸収液を一時貯
留する吸収塔循環タンクと該吸収塔循環タンクに空気を
供給して該亜硫酸塩を酸化した吸収液を循環ポンプによ
り再び上記吸収塔へ再循環させる湿式排煙脱硫装置にお
いて、 上記吸収塔のガス入口部に、該入口部を支持する内部サ
ポートを設け、該内部サポートへのスケーリング防止用
の水洗ラインを設けたことを特徴とする湿式排煙脱硫装
置。1. A method for removing dust in exhaust gas and for absorbing and removing sulfur oxides in exhaust gas provided in one or more stages so as to contact the exhaust gas introduced from a gas inlet provided on a side wall surface with the inside of the tower. An absorption tower provided with a spray header having a plurality of spray nozzles, an absorption tower circulating tank provided at the lower part of the absorption tower for temporarily storing an absorbing solution that absorbs sulfur oxides and generates sulfite, and air is supplied to the absorption tower circulating tank. In the wet flue gas desulfurization apparatus for supplying the oxidized sulfite and recirculating the absorbent oxidized by the circulation pump to the absorption tower, an internal support for supporting the inlet is provided at the gas inlet of the absorber. A wet-type flue gas desulfurization apparatus, wherein a water washing line for preventing scaling is provided on the internal support.
トへのスケーリング防止用の水洗ラインは、吸収塔のガ
ス入口部の上方部分と内部サポート全面に向けてそれぞ
れ水洗水を噴霧するスプレノズルを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 rinsing line for preventing scaling of an internal support provided at a gas inlet of an absorption tower includes a spray nozzle for spraying rinsing water toward an upper portion of the gas inlet of the absorption tower and a whole surface of the internal support. The wet flue gas desulfurization device according to claim 1, wherein the device is provided.
トの内部に水洗水を供給し、該サポートの上部から水洗
水を流出させることを特徴とする請求項１記載の湿式排
煙脱硫装置。3. The wet flue gas desulfurization apparatus according to claim 1, wherein washing water is supplied into an internal support provided at a gas inlet of the absorption tower, and the washing water flows out from an upper portion of the support. .
起動により内部サポートの水洗を開始し、通ガス開始以
降は吸収塔の水バランスが許容できる範囲で前記水洗を
行うことを特徴とする請求項１記載の湿式排煙脱硫装置
の運転方法。4. The method according to claim 1, wherein when the wet flue gas desulfurization apparatus is started, the circulating pump is started to wash the internal support, and after the start of gas passage, the washing is performed within an allowable range of the water balance of the absorption tower. Item 4. An operation method of the wet flue gas desulfurization device according to Item 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34514099A JP3623902B2 (en) | 1999-12-03 | 1999-12-03 | Wet flue gas desulfurization device and its operation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34514099A JP3623902B2 (en) | 1999-12-03 | 1999-12-03 | Wet flue gas desulfurization device and its operation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001157821A true JP2001157821A (en) | 2001-06-12 |
| JP3623902B2 JP3623902B2 (en) | 2005-02-23 |
Family
ID=18374559
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34514099A Expired - Lifetime JP3623902B2 (en) | 1999-12-03 | 1999-12-03 | Wet flue gas desulfurization device and its operation method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005152745A (en) * | 2003-11-25 | 2005-06-16 | Babcock Hitachi Kk | Wet flue gas desulfurization method and wet flue gas desulfurizer |
| JP2007301519A (en) * | 2006-05-15 | 2007-11-22 | Mitsubishi Materials Corp | Clogging inhibition method of flue for sulfur containing exhaust gas, and flue for sulfur containing exhaust gas |
-
1999
- 1999-12-03 JP JP34514099A patent/JP3623902B2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005152745A (en) * | 2003-11-25 | 2005-06-16 | Babcock Hitachi Kk | Wet flue gas desulfurization method and wet flue gas desulfurizer |
| JP4587197B2 (en) * | 2003-11-25 | 2010-11-24 | バブコック日立株式会社 | Wet flue gas desulfurization method and apparatus |
| JP2007301519A (en) * | 2006-05-15 | 2007-11-22 | Mitsubishi Materials Corp | Clogging inhibition method of flue for sulfur containing exhaust gas, and flue for sulfur containing exhaust gas |
| JP4715629B2 (en) * | 2006-05-15 | 2011-07-06 | 三菱マテリアル株式会社 | Method for preventing clogging of flue for sulfur-containing exhaust gas and flue for sulfur-containing exhaust gas |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3623902B2 (en) | 2005-02-23 |
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