JP2000061256A - Gypsum separator filtrate vessel for wet stack gas desulfurizing equipment - Google Patents

Gypsum separator filtrate vessel for wet stack gas desulfurizing equipment

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Publication number
JP2000061256A
JP2000061256A JP10231697A JP23169798A JP2000061256A JP 2000061256 A JP2000061256 A JP 2000061256A JP 10231697 A JP10231697 A JP 10231697A JP 23169798 A JP23169798 A JP 23169798A JP 2000061256 A JP2000061256 A JP 2000061256A
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JP
Japan
Prior art keywords
filtrate
gypsum
water
seal water
storing part
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
Application number
JP10231697A
Other languages
Japanese (ja)
Inventor
Yoshihisa Fujino
善久 藤野
Takumi Endo
巧 遠藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IHI Corp
Original Assignee
IHI Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by IHI Corp filed Critical IHI Corp
Priority to JP10231697A priority Critical patent/JP2000061256A/en
Publication of JP2000061256A publication Critical patent/JP2000061256A/en
Pending legal-status Critical Current

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Abstract

PROBLEM TO BE SOLVED: To make reusable water used as seal water for a vacuum pump as washing water for washing gypsum, and to make savable the used quantity of new industrial water or the like. SOLUTION: The gypsum separator filtrate vessel 13 is divided into: a high chlorine concentration filtrate storing part 27 into which a filtrate 14 of high chlorine concentration separated from gypsum 10 is introduced; a chorine content dilution filtrate storing part 28 into which a filtrate 18 that chlorine content is diluted after washing the gypsum 10 is introduced; and a seal water storing part 36 into which a water used as seal water 24 for a vacuum pump 12 is introduced, and it is constituted so that the filtrate 14 and the seal water 24 overflow the high chlorine concentration filtrate storing part 27 and the seal water storing part 36 respectively into the chlorine content dilution filtrate storing part 28, and it is constituted so that the level of the liquid in the chlorine content dilution filtrate storing part 28 is controlled to keep it lower than the upper ends of compartment walls 26, 37 to the adjacent high chlorine concentration filtrate storing part 27 the seal water storing part 36.

Description

【発明の詳細な説明】 【0001】 【発明の属する技術分野】本発明は、湿式排煙脱硫装置
の石膏分離機濾液槽に関するものである。 【0002】 【従来の技術】一般に、発電所等においては、石炭焚ボ
イラ等から排出される排ガスからSO 2(硫黄酸化物)
を吸収除去するために、吸収剤として炭酸カルシウム
(CaCO3)を用いた湿式排煙脱硫装置が設けられる
が、該湿式排煙脱硫装置は、通常、図2に示されるよう
に、下部に吸収液1の液溜部1aが形成され且つ上部に
多数のスプレーノズル2が配設された吸収塔3と、該吸
収塔3の液溜部1aの吸収液1を汲み上げ前記スプレー
ノズル2から噴霧させて循環させる複数台の循環ポンプ
4と、前記吸収塔3の液溜部1aに酸化空気を供給する
酸化空気ブロワ5とを備えてなる構成を有している。 【0003】更に、前記湿式排煙脱硫装置は、吸収塔3
の液溜部1aから抜出ライン6を介して抜き出される吸
収液1に苛性ソーダ(NaOH)等の中和剤を添加する
石膏分離機供給槽7と、該石膏分離機供給槽7で中和さ
れた吸収液8が中和吸収液ライン9を介して導入され、
該吸収液8中の固形分を含むスラリーを真空ポンプ12
の作動により脱水して石膏10を分離するベルトフィル
タ型の石膏分離機11と、該石膏分離機11で石膏10
と分離された濾液14等が導入される石膏分離機濾液槽
13とを備えている。 【0004】前記石膏分離機11は、所要間隔をあけて
回転可能に配置されたガイドロール20間に無端状のベ
ルトフィルタ21を掛け回し、該ベルトフィルタ21を
ガイドロール20の回転駆動により所要方向へ移動さ
せ、且つ真空ポンプ12の作動により真空タンク22を
介してベルトフィルタ21の下面側を負圧に保持した状
態で、該ベルトフィルタ21上の上流側所要位置に石膏
分離機供給槽7からの吸収液8を流下させることによ
り、脱水を行い、石膏10と濾液14に分離するように
なっており、前記真空ポンプ12の作動により石膏10
と分離した濾液14は、塩素濃度が高いため、濾液ライ
ン15を介して石膏分離機濾液槽13の区画壁26で分
割された高塩素濃度濾液貯留部27へ導入するようにな
っている。又、前記石膏分離機11のベルトフィルタ2
1上の下流側所要位置には、工業用水等の洗浄水16を
洗浄水ライン17から流下させると共に、前記真空ポン
プ12の作動により真空タンク23を介してベルトフィ
ルタ21の下面側を負圧に保持することにより、脱水さ
れた石膏10を洗浄し、且つ該石膏10を洗浄した後の
塩素分が希釈された濾液18を、濾液ライン19を介し
て石膏分離機濾液槽13の区画壁26で分割された塩素
分希釈濾液貯留部28へ導入するようになっている。 【0005】前記真空ポンプ12には、真空保持用の工
業用水等のシール水24を供給する必要があり、真空ポ
ンプ12のシール水24として使用された水は、シール
水ライン25を介して前記石膏分離機濾液槽13の塩素
分希釈濾液貯留部28へ導入するようになっている。 【0006】前記石膏分離機濾液槽13の塩素分希釈濾
液貯留部28に導入された濾液18と真空ポンプ12の
シール水24として使用された水とを含む濾液32は、
途中に流量調整弁33が設けられた回収ライン31を介
して吸収塔3へ戻すようになっており、前記石膏分離機
濾液槽13の塩素分希釈濾液貯留部28には、その液面
レベルを設定値に保持するための開度指令30を前記流
量調整弁33へ出力するレベル指示調節計29が設けら
れている。 【0007】尚、図2中、34は前記石膏分離機濾液槽
13の高塩素濃度濾液貯留部27に導入された濾液14
を系外の排水処理装置35へ排出するための排出ライン
である。 【0008】前述の如き湿式排煙脱硫装置の場合、吸収
液1が循環ポンプ4の作動によりスプレーノズル2から
噴霧されつつ循環しており、図示していない石炭焚ボイ
ラ等から吸収塔3に送り込まれた排ガスは、前記スプレ
ーノズル2から噴霧される吸収液1と接触することによ
り、SO2(硫黄酸化物)が吸収除去された後、外部へ
排出される。 【0009】一方、前記排ガスからSO2を吸収した吸
収液1は、液溜部1aに滴下し、酸化空気ブロワ5の作
動によって液溜部1a内へ供給される酸化空気により強
制的に酸化され、石膏(硫酸カルシウム(CaS
4))が生成され、該石膏を含む液溜部1a内の吸収
液1の一部は、抜出ライン6を介して石膏分離機供給槽
7へ抜き出され、該石膏分離機供給槽7において、苛性
ソーダ(NaOH)等の中和剤により中和され、該石膏
分離機供給槽7で中和された吸収液8は、中和吸収液ラ
イン9を介して石膏分離機11へ導入され、該石膏分離
機11において、真空ポンプ12の作動により脱水さ
れ、石膏10と濾液14に分離され、前記真空ポンプ1
2の作動により石膏10と分離した濾液14は、濾液ラ
イン15を介して石膏分離機濾液槽13の高塩素濃度濾
液貯留部27へ導入され、又、前記石膏分離機11で脱
水された石膏10は、洗浄水ライン17から流下させた
工業用水等の洗浄水16によって洗浄され、該石膏10
を洗浄した後の塩素分が希釈された濾液18は、濾液ラ
イン19を介して石膏分離機濾液槽13の塩素分希釈濾
液貯留部28へ導入される。 【0010】又、前記真空ポンプ12には、真空保持用
の工業用水等のシール水24が供給され、該真空ポンプ
12のシール水24として使用された水は、シール水ラ
イン25を介して前記石膏分離機濾液槽13の塩素分希
釈濾液貯留部28へ導入される。 【0011】前記石膏分離機濾液槽13の塩素分希釈濾
液貯留部28の液面レベルはレベル指示調節計29によ
って検出されており、前記レベル指示調節計29から出
力される開度指令30に応じて流量調整弁33の開度調
整が行われ、前記石膏分離機濾液槽13の塩素分希釈濾
液貯留部28に導入された濾液18と真空ポンプ12の
シール水24として使用された水とを含む濾液32が、
回収ライン31を介して吸収塔3へ適宜戻され、これに
より、前記石膏分離機濾液槽13の塩素分希釈濾液貯留
部28の液面レベルは設定値に保持される。 【0012】又、前記石膏分離機濾液槽13の高塩素濃
度濾液貯留部27に導入された濾液14は、排出ライン
34を介して系外の排水処理装置35へ排出され、該排
水処理装置35において硝化菌の作用により有害な窒素
化合物が分解され、且つCOD(化学的酸素要求量)で
表わされる還元性物質が高分子材料からなる吸着樹脂に
より吸着された後、外部へ排出される。 【0013】 【発明が解決しようとする課題】しかしながら、前述の
如き湿式排煙脱硫装置の石膏分離機濾液槽13において
は、石膏10を洗浄した後の塩素分が希釈された濾液1
8と、真空ポンプ12のシール水24として使用された
水とを同じ塩素分希釈濾液貯留部28に導入するように
してあるため、前記真空ポンプ12のシール水24とし
て使用された水は、例えば、脱水された石膏10を洗浄
するための洗浄水16として再使用できるにもかかわら
ず、吸収塔3へ戻す以外に使い道がなくなり、新規の工
業用水等が多く必要になるといった不具合を有してい
た。 【0014】本発明は、斯かる実情に鑑み、真空ポンプ
のシール水として使用された水を石膏を洗浄するための
洗浄水として再使用でき、新規の工業用水等の使用量を
節約できる湿式排煙脱硫装置の石膏分離機濾液槽を提供
しようとするものである。 【0015】 【課題を解決するための手段】本発明は、真空ポンプの
作動により石膏分離機から排出される濾液と、真空ポン
プのシール水として使用された水とが導入される湿式排
煙脱硫装置の石膏分離機濾液槽であって、石膏分離機で
石膏と分離された塩素濃度の高い濾液が導入される高塩
素濃度濾液貯留部と、石膏分離機で分離された石膏を洗
浄した後の塩素分が希釈された濾液が導入される塩素分
希釈濾液貯留部と、真空ポンプのシール水として使用さ
れた水が導入されるシール水貯留部とを、区画壁によっ
て石膏分離機濾液槽の内部に分割形成すると共に、高塩
素濃度濾液貯留部の濾液並びにシール水貯留部の水の塩
素分希釈濾液貯留部へのオーバフローを許容するよう構
成し、且つ塩素分希釈濾液貯留部の液面を、隣接する高
塩素濃度濾液貯留部並びにシール水貯留部に対する区画
壁の上端より低く制御するよう構成したことを特徴とす
る湿式排煙脱硫装置の石膏分離機濾液槽にかかるもので
ある。 【0016】上記手段によれば、以下のような作用が得
られる。 【0017】石膏分離機濾液槽の内部を区画壁によって
高塩素濃度濾液貯留部と塩素分希釈濾液貯留部とシール
水貯留部とに分割すると、真空ポンプのシール水として
使用されシール水貯留部に導入された水を、石膏を洗浄
するための洗浄水としてそのまま再使用することが可能
となり、新規の工業用水等の使用量が少なくて済む。 【0018】又、高塩素濃度濾液貯留部の濾液並びにシ
ール水貯留部の水のそれぞれの水量のバランスが取れな
い場合は、高塩素濃度濾液貯留部の濾液並びにシール水
貯留部の水がそれぞれ区画壁をオーバフローして塩素分
希釈濾液貯留部へ流入するが、これは液性状に影響を与
えることはなく、しかも、特別な配管や弁等を設けて制
御を行う必要もなく、設備の簡略化にもつながる。 【0019】 【発明の実施の形態】以下、本発明の実施の形態を図示
例と共に説明する。 【0020】図1は本発明を実施する形態の一例であっ
て、図中、図2と同一の符号を付した部分は同一物を表
わしており、基本的な構成は図2に示す従来のものと同
様であるが、本図示例の特徴とするところは、図1に示
す如く、石膏分離機11で石膏10と分離された塩素濃
度の高い濾液14が導入される高塩素濃度濾液貯留部2
7と、石膏分離機11で分離された石膏10を洗浄した
後の塩素分が希釈された濾液18が導入される塩素分希
釈濾液貯留部28と、真空ポンプ12のシール水24と
して使用された水が導入されるシール水貯留部36と
を、区画壁26,37によって石膏分離機濾液槽13の
内部に分割形成すると共に、高塩素濃度濾液貯留部27
の濾液14並びにシール水貯留部36の水の塩素分希釈
濾液貯留部28へのオーバフローを許容するよう構成
し、且つ塩素分希釈濾液貯留部28の液面を、隣接する
高塩素濃度濾液貯留部27並びにシール水貯留部36に
対する区画壁26,37の上端より低く制御するよう構
成した点にある。 【0021】次に、上記図示例の作動を説明する。 【0022】前述の如く、石膏分離機濾液槽13の内部
を区画壁26,37によって高塩素濃度濾液貯留部27
と塩素分希釈濾液貯留部28とシール水貯留部36とに
分割すると、図1に示すように、真空ポンプ12のシー
ル水24として使用されシール水貯留部36に導入され
た水を洗浄水ライン17を介して、石膏10を洗浄する
ための洗浄水16としてそのまま再使用することが可能
となり、新規の工業用水等の使用量が少なくて済む。 【0023】又、高塩素濃度濾液貯留部27の濾液14
並びにシール水貯留部36の水のそれぞれの水量のバラ
ンスが取れない場合は、高塩素濃度濾液貯留部27の濾
液14並びにシール水貯留部36の水がそれぞれ区画壁
26,37をオーバフローして塩素分希釈濾液貯留部2
8へ流入するが、これは液性状に影響を与えることはな
く、しかも、特別な配管や弁等を設けて制御を行う必要
もなく、設備の簡略化にもつながる。 【0024】こうして、真空ポンプ12のシール水24
として使用された水を石膏10を洗浄するための洗浄水
16として再使用でき、新規の工業用水等の使用量を節
約でき、更に設備の簡略化をも図り得る。 【0025】尚、本発明の湿式排煙脱硫装置の石膏分離
機濾液槽は、上述の図示例にのみ限定されるものではな
く、本発明の要旨を逸脱しない範囲内において種々変更
を加え得ることは勿論である。 【0026】 【発明の効果】以上、説明したように本発明の湿式排煙
脱硫装置の石膏分離機濾液槽によれば、真空ポンプのシ
ール水として使用された水を石膏を洗浄するための洗浄
水として再使用でき、新規の工業用水等の使用量を節約
でき、更に設備の簡略化をも図り得るという優れた効果
を奏し得る。
DETAILED DESCRIPTION OF THE INVENTION [0001] TECHNICAL FIELD The present invention relates to a wet flue gas desulfurization apparatus.
The present invention relates to a gypsum separator filtrate tank. [0002] 2. Description of the Related Art In general, coal-fired
SO from exhaust gas discharged from irrigation Two(Sulfur oxides)
To absorb and remove calcium carbonate as absorbent
(CaCOThree) Is provided with a wet flue gas desulfurization device
However, the wet-type flue gas desulfurization apparatus is generally configured as shown in FIG.
A liquid reservoir 1a for absorbing liquid 1 is formed in the lower part and
An absorption tower 3 provided with a number of spray nozzles 2;
The absorption liquid 1 in the liquid reservoir 1a of the collection tower 3 is pumped up and sprayed.
Multiple circulation pumps for spraying and circulating from nozzle 2
And oxidizing air is supplied to the liquid reservoir 1a of the absorption tower 3.
An oxidizing air blower 5 is provided. Further, the above-mentioned wet flue gas desulfurization apparatus is provided with an absorption tower 3
Drawn out from the liquid reservoir 1a through the withdrawal line 6.
Add a neutralizing agent such as caustic soda (NaOH) to the collected liquid 1
Neutralized in the gypsum separator supply tank 7 and the gypsum separator supply tank 7
The absorbed liquid 8 introduced through the neutralized absorbing liquid line 9,
The slurry containing the solid content in the absorbing liquid 8 is supplied to a vacuum pump 12
Fill to separate gypsum 10 by dehydration by the operation of
Gypsum separator 11 and a gypsum 10
Gypsum separator filtrate tank into which the filtrate 14 and the like separated from the liquid are introduced
13 is provided. [0004] The gypsum separator 11 is provided at required intervals.
An endless base is provided between the rotatable guide rolls 20.
The belt filter 21 is wound around the
The guide roll 20 is moved in the required direction
And the vacuum tank 22 is operated by the operation of the vacuum pump 12.
The lower surface of the belt filter 21 is maintained at a negative pressure
In a state, the gypsum is placed at a required position on the
By causing the absorbent 8 to flow down from the separator supply tank 7
Dehydrated and separated into gypsum 10 and filtrate 14
The plaster 10 is operated by the operation of the vacuum pump 12.
The filtrate 14 separated from the filtrate has a high chlorine concentration.
At the partition wall 26 of the gypsum separator filtrate tank 13 through the
To be introduced into the cracked high-filtration-concentration filtrate storage section 27.
ing. Further, the belt filter 2 of the gypsum separator 11
1 at a required downstream position, wash water 16 such as industrial water.
It is made to flow down from the washing water line 17 and the vacuum pump
Belt 12 through the vacuum tank 23 by the operation of the
By holding the lower surface of the filter 21 at a negative pressure,
Washed gypsum 10 and after washing gypsum 10
The filtrate 18 in which the chlorine content has been diluted is passed through a filtrate line 19.
Divided by the partition wall 26 of the gypsum separator filtrate tank 13
The filtrate is introduced into the fractionally diluted filtrate storage unit 28. The vacuum pump 12 is provided with a process for maintaining a vacuum.
It is necessary to supply seal water 24 such as industrial water,
The water used as the seal water 24 of the pump 12
Chlorine in the gypsum separator filtrate tank 13 through the water line 25
The filtrate is introduced into the fractionally diluted filtrate storage unit 28. [0006] Filtration of chlorine in the gypsum separator filtrate tank 13
The filtrate 18 introduced into the liquid storage 28 and the vacuum pump 12
The filtrate 32 containing the water used as the seal water 24,
Through the recovery line 31 provided with a flow control valve 33 in the middle
And returns to the absorption tower 3, and the gypsum separator
The filtrate level is stored in the chlorine-diluted filtrate storage section 28 of the filtrate tank 13.
The opening degree command 30 for maintaining the level at the set value
A level indicating controller 29 for outputting to the amount adjusting valve 33 is provided.
Have been. In FIG. 2, reference numeral 34 denotes a filtrate tank of the gypsum separator.
The filtrate 14 introduced into the high chlorine concentration filtrate storage section 27 of FIG.
Line for discharging wastewater to a wastewater treatment device 35 outside the system
It is. In the case of the wet flue gas desulfurization unit as described above,
Liquid 1 is sprayed from spray nozzle 2 by operation of circulation pump 4
Coal fired boiler (not shown) circulating while being sprayed
The exhaust gas sent to the absorption tower 3 from the
-By contact with the absorbing liquid 1 sprayed from the nozzle 2
SOTwoAfter (sulfur oxide) is absorbed and removed, go to the outside
Is discharged. On the other hand, from the exhaust gas, SOTwoAbsorbed
The collected liquid 1 is dropped into the liquid reservoir 1a and the oxidized air blower 5
Oxidized air supplied into the liquid reservoir 1a by movement
Gypsum (calcium sulfate (CaS
OFour)) Is generated and absorbed in the reservoir 1a containing the gypsum.
Part of the liquid 1 is supplied to the gypsum separator supply tank via the extraction line 6
7 in the gypsum separator feed tank 7
Neutralized by a neutralizing agent such as soda (NaOH)
The absorbing solution 8 neutralized in the separator supply tank 7 is
Is introduced into the gypsum separator 11 through the in 9 and the gypsum separation
In the machine 11, the vacuum pump 12 operates to
And separated into gypsum 10 and filtrate 14, and the vacuum pump 1
The filtrate 14 separated from the gypsum 10 by the operation of Step 2 is
High chlorine concentration filtration of the gypsum separator filtrate tank 13 through the inlet 15
The gypsum separator 11 introduces the liquid into the liquid storage unit 27 and removes it.
The watered gypsum 10 was allowed to flow down from the washing water line 17.
The gypsum 10 is washed with washing water 16 such as industrial water.
The filtrate 18 in which the chlorine content has been diluted after washing the
Through the gypsum separator filtrate tank 13
The liquid is introduced into the liquid storage unit 28. The vacuum pump 12 has a vacuum holding function.
Is supplied with seal water 24 such as industrial water of
The water used as the seal water 24 of the seal water
Chlorine in the gypsum separator filtrate tank 13 through the in 25.
The filtrate is introduced into the filtrate storage unit 28. [0011] The chlorine dilution filter of the gypsum separator filtrate tank 13
The liquid level of the liquid storage section 28 is controlled by a level indicator controller 29.
Output from the level indicating controller 29.
Adjustment of the opening of the flow regulating valve 33 according to the opening command 30
Is adjusted, and the chlorine content dilution filtration of the gypsum separator filtrate tank 13 is performed.
The filtrate 18 introduced into the liquid storage 28 and the vacuum pump 12
The filtrate 32 containing the water used as the seal water 24,
It is appropriately returned to the absorption tower 3 via the recovery line 31, and
From the gypsum separator filtrate tank 13, the chlorine-diluted filtrate is stored.
The liquid level of the section 28 is kept at the set value. In the gypsum separator filtrate tank 13, the high chlorine concentration
The filtrate 14 introduced into the filtrate storage part 27 is
34 to a wastewater treatment device 35 outside the system,
Nitrogen harmful due to the action of nitrifying bacteria in the water treatment device 35
Compounds are decomposed and COD (Chemical Oxygen Demand)
The reducing substance represented is converted into an adsorption resin composed of a polymer material.
After being more adsorbed, it is discharged outside. [0013] However, the above-mentioned problem is not solved.
Plaster separator filtrate tank 13 of wet flue gas desulfurization equipment
Is the filtrate 1 in which the chlorine content after washing the gypsum 10 is diluted.
8 and used as seal water 24 of vacuum pump 12
So that water is introduced into the same chlorine-diluted filtrate storage unit 28
The seal water 24 of the vacuum pump 12
The used water is used to wash the dehydrated plaster 10, for example.
Although it can be reused as washing water 16 for cleaning
And there is no use other than returning to the absorption tower 3
There is a problem that a large amount of industrial water is required.
Was. The present invention has been made in view of the above circumstances, and
Water used as a seal water for washing gypsum
Can be reused as washing water, reducing the amount of new industrial water used
Providing a gypsum separator filtrate tank for wet-type flue gas desulfurization equipment that can save money
What you want to do. [0015] SUMMARY OF THE INVENTION The present invention relates to a vacuum pump.
The filtrate discharged from the gypsum separator by operation and the vacuum pump
Wet drain into which water used as seal water for
Gypsum separator for smoke desulfurization equipment
High salt into which gypsum and separated filtrate with high chlorine concentration are introduced
Wash the gypsum separated with the gypsum separator and the gypsum separator.
Chlorine content to which filtrate after diluting chlorine content after purification is introduced
Used as a sealant for the vacuum pump and the diluted filtrate reservoir
The seal water reservoir where the water is introduced is
Gypsum separator.
Filtrate in elemental concentration filtrate reservoir and water salt in seal water reservoir
The structure should allow overflow to the element dilution filtrate reservoir.
And the liquid level in the chlorine-diluted filtrate storage section is
Compartment for chlorine concentration filtrate storage and seal water storage
It is designed to be controlled lower than the upper edge of the wall.
Gypsum separator of wet flue gas desulfurization equipment
is there. According to the above means, the following effects can be obtained.
Can be The interior of the gypsum separator filtrate tank is defined by partition walls.
High chlorine concentration filtrate storage section and chlorine dilution filtrate storage section and seal
Divided into a water storage section and used as seal water for vacuum pumps
Used water introduced into the seal water storage unit and gypsum washed
Can be reused as washing water for cleaning
Thus, the amount of new industrial water used can be reduced. Also, the filtrate and the sieve in the high chlorine concentration filtrate storage section are used.
Water balance in the water reservoir is not balanced
If not, use the filtrate and seal water in the high chlorine concentration filtrate storage section.
The water in the reservoir overflows the partition walls and causes chlorine
It flows into the diluted filtrate reservoir, which affects the liquid properties.
It can be controlled by providing special piping and valves.
There is no need for control, which leads to simplification of equipment. [0019] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below.
This will be described with an example. FIG. 1 shows an example of an embodiment of the present invention.
In the figure, the parts denoted by the same reference numerals as those in FIG.
The basic configuration is the same as the conventional one shown in FIG.
However, the feature of the illustrated example is shown in FIG.
Thus, the chlorine concentration separated from the gypsum 10 by the gypsum separator 11
High-chlorine-concentration filtrate reservoir 2 into which high-concentration filtrate 14 is introduced
7 and the gypsum 10 separated by the gypsum separator 11 were washed.
Chlorine diluent into which the filtrate 18 in which the subsequent chlorine dilutes is introduced
The filtrate storage part 28 and the seal water 24 of the vacuum pump 12
And a seal water storage 36 into which the water used as the water is introduced.
Of the gypsum separator filtrate tank 13 by the partition walls 26 and 37.
A high chlorine concentration filtrate storage part 27 is formed separately inside.
Dilution of the filtrate 14 and the water in the seal water reservoir 36
Configuration to allow overflow to filtrate reservoir 28
And the liquid surface of the chlorine-diluted filtrate storage unit 28 is
High chlorine concentration filtrate storage part 27 and seal water storage part 36
So that it is lower than the upper ends of the partition walls 26 and 37.
It is in the point that has been completed. Next, the operation of the illustrated example will be described. As described above, the interior of the gypsum separator filtrate tank 13
The high chlorine concentration filtrate storage part 27
And the chlorine-diluted filtrate storage unit 28 and the seal water storage unit 36
When divided, as shown in FIG.
Used as the seal water 24 and introduced into the seal water storage 36.
The gypsum 10 is washed through the washing water line 17 with the washed water.
Can be reused as it is as washing water 16
Thus, the amount of new industrial water used can be reduced. The filtrate 14 in the high chlorine concentration filtrate storage section 27
And the amount of water in each of the seal water storage units 36
If the balance cannot be obtained, the high chlorine concentration filtrate
The liquid 14 and the water in the seal water storage 36 are partitioned walls, respectively.
Overflow of 26 and 37, and chlorine content diluted filtrate reservoir 2
8, which does not affect the liquid properties.
In addition, it is necessary to provide special piping and valves for control.
No, it leads to simplification of equipment. Thus, the seal water 24 of the vacuum pump 12
Water used for washing the plaster 10
It can be reused as 16 and saves new industrial water consumption.
Can be reduced, and the equipment can be simplified. Incidentally, gypsum separation of the wet flue gas desulfurization apparatus of the present invention.
The machine filtrate tank is not limited only to the above illustrated example.
Various changes are made without departing from the spirit of the present invention.
Can of course be added. [0026] As described above, the wet flue gas of the present invention is used as described above.
According to the gypsum separator filtrate tank of the desulfurization unit, the vacuum pump system
Cleaning used to wash gypsum with water used as tool water
Can be reused as water, saving new industrial water usage
Excellent effect of being able to simplify the equipment
Can be played.

【図面の簡単な説明】 【図1】本発明を実施する形態の一例の全体概要構成図
である。 【図2】従来例の全体概要構成図である。 【符号の説明】 10 石膏 11 石膏分離機 12 真空ポンプ 13 石膏分離機濾液槽 14 濾液 16 洗浄水 18 濾液 24 シール水 26 区画壁 27 高塩素濃度濾液貯留部 28 塩素分希釈濾液貯留部 29 レベル指示調節計 30 開度指令 31 回収ライン 33 流量調整弁 36 シール水貯留部 37 区画壁
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overall schematic configuration diagram of an example of an embodiment of the present invention. FIG. 2 is an overall schematic configuration diagram of a conventional example. [Description of Signs] 10 Gypsum 11 Gypsum separator 12 Vacuum pump 13 Gypsum separator filtrate tank 14 Filtrate 16 Washing water 18 Filtrate 24 Seal water 26 Partition wall 27 High chlorine concentration filtrate storage part 28 Chlorine dilution filtrate storage part 29 Level instruction Controller 30 Opening command 31 Recovery line 33 Flow control valve 36 Seal water reservoir 37 Partition wall

Claims (1)

【特許請求の範囲】 【請求項1】 真空ポンプの作動により石膏分離機から
排出される濾液と、真空ポンプのシール水として使用さ
れた水とが導入される湿式排煙脱硫装置の石膏分離機濾
液槽であって、 石膏分離機で石膏と分離された塩素濃度の高い濾液が導
入される高塩素濃度濾液貯留部と、石膏分離機で分離さ
れた石膏を洗浄した後の塩素分が希釈された濾液が導入
される塩素分希釈濾液貯留部と、真空ポンプのシール水
として使用された水が導入されるシール水貯留部とを、
区画壁によって石膏分離機濾液槽の内部に分割形成する
と共に、 高塩素濃度濾液貯留部の濾液並びにシール水貯留部の水
の塩素分希釈濾液貯留部へのオーバフローを許容するよ
う構成し、且つ塩素分希釈濾液貯留部の液面を、隣接す
る高塩素濃度濾液貯留部並びにシール水貯留部に対する
区画壁の上端より低く制御するよう構成したことを特徴
とする湿式排煙脱硫装置の石膏分離機濾液槽。
Claims: 1. A gypsum separator of a wet type flue gas desulfurization device into which a filtrate discharged from a gypsum separator by operation of a vacuum pump and water used as sealing water of the vacuum pump are introduced. A filtrate tank, in which a gypsum-separated gypsum-separated gypsum-separated filtrate is introduced, and a gypsum-separated gypsum-separated gypsum-washed gypsum is diluted. The filtrate is introduced into the chlorine-diluted filtrate reservoir, and the seal water reservoir into which water used as seal water for the vacuum pump is introduced.
The partition wall is formed separately in the interior of the gypsum separator filtrate tank, and is configured to allow overflow of the filtrate of the high chlorine concentration filtrate storage section and the water of the seal water storage section into the chlorine dilution filtrate storage section, and chlorine. A gypsum separator filtrate of a wet type flue gas desulfurization device, characterized in that the liquid surface of the fractionally diluted filtrate storage section is controlled to be lower than the upper end of the partition wall with respect to the adjacent high chlorine concentration filtrate storage section and the seal water storage section. Tank.
JP10231697A 1998-08-18 1998-08-18 Gypsum separator filtrate vessel for wet stack gas desulfurizing equipment Pending JP2000061256A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10231697A JP2000061256A (en) 1998-08-18 1998-08-18 Gypsum separator filtrate vessel for wet stack gas desulfurizing equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10231697A JP2000061256A (en) 1998-08-18 1998-08-18 Gypsum separator filtrate vessel for wet stack gas desulfurizing equipment

Publications (1)

Publication Number Publication Date
JP2000061256A true JP2000061256A (en) 2000-02-29

Family

ID=16927592

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10231697A Pending JP2000061256A (en) 1998-08-18 1998-08-18 Gypsum separator filtrate vessel for wet stack gas desulfurizing equipment

Country Status (1)

Country Link
JP (1) JP2000061256A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021079319A (en) * 2019-11-18 2021-05-27 三菱パワー株式会社 Gypsum slurry dewatering system
CN114073887A (en) * 2020-08-14 2022-02-22 华电国际电力股份有限公司技术服务分公司 Method for optimizing and controlling water balance of limestone-wet desulphurization system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021079319A (en) * 2019-11-18 2021-05-27 三菱パワー株式会社 Gypsum slurry dewatering system
WO2021100628A1 (en) * 2019-11-18 2021-05-27 三菱パワー株式会社 Gypsum slurry dehydration system
JP7351726B2 (en) 2019-11-18 2023-09-27 三菱重工業株式会社 Gypsum slurry dewatering system
CN114073887A (en) * 2020-08-14 2022-02-22 华电国际电力股份有限公司技术服务分公司 Method for optimizing and controlling water balance of limestone-wet desulphurization system
CN114073887B (en) * 2020-08-14 2024-02-27 华电国际电力股份有限公司技术服务分公司 Optimization and control method for water balance of limestone-wet desulfurization system

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