JPH10300367A - Chlorine generating facility of power generation plant - Google Patents
Chlorine generating facility of power generation plantInfo
- Publication number
- JPH10300367A JPH10300367A JP10593197A JP10593197A JPH10300367A JP H10300367 A JPH10300367 A JP H10300367A JP 10593197 A JP10593197 A JP 10593197A JP 10593197 A JP10593197 A JP 10593197A JP H10300367 A JPH10300367 A JP H10300367A
- Authority
- JP
- Japan
- Prior art keywords
- water
- chlorine
- pipe
- cooling tower
- condenser
- 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.)
- Withdrawn
Links
Landscapes
- Water Treatment By Electricity Or Magnetism (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、海洋生成物の付着
を防止するために用いられる発電プラントの塩素発生設
備に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chlorine generating facility of a power plant used for preventing marine products from adhering.
【０００２】[0002]
【従来の技術】発電プラントの復水器の冷却水には湿式
冷却塔で冷却された海水を使用する形式のものがある。
この形式のものにおいては循環水ポンプや海水取水管な
どの海水系統に貝類などの海洋生成物が付着する。これ
を防止するため、海水系統に塩素の化合物である次亜塩
素酸ナトリウム（ＮａＯＣｌ）を注入する。次亜塩素酸
ナトリウムは、遊離の酸素を発生し強い酸化性を示し殺
菌力がある。用途としては殺虫剤、消毒材、防臭剤など
に使われる。また、次亜塩素酸ナトリウムの製法として
は、塩素発生装置で海水を無隔膜で電気分解する方法が
用いられている。2. Description of the Related Art There is a type of cooling water for a condenser of a power plant which uses seawater cooled by a wet cooling tower.
In this type, marine products such as shellfish adhere to seawater systems such as circulating water pumps and seawater intake pipes. To prevent this, sodium hypochlorite (NaOCl), which is a chlorine compound, is injected into the seawater system. Sodium hypochlorite generates free oxygen, has strong oxidizing properties, and has bactericidal activity. It is used for insecticides, disinfectants and deodorants. In addition, as a method for producing sodium hypochlorite, a method of electrolyzing seawater without a diaphragm using a chlorine generator has been used.
【０００３】図２は従来の発電プラントにおける塩素発
生設備の系統図である。図において、１は取水口、２は
放水口、３は冷却塔のベイスン、４は復水器、５は冷却
塔、６は塩素発生装置、７は前記取水口から冷却塔ベイ
スンへ海水を取り入れる海水取水管、８は同管上に設け
られている取水ポンプ、９は冷却塔のベイスン３から復
水器４へ冷却水を供給し、冷却塔へ戻す循環水管、１０
は同管上に設けられている循環水ポンプ、１１は循環水
管の復水器４と冷却塔５との間から分岐して放水口２へ
開口するブロー管、１２は同管上に設けられているブロ
ーポンプ、１３は取水管７から分岐して塩素発生装置６
へ海水を供給する塩素発生用原料水取水管、１４は同管
上に設けられているブースターポンプ、１５は塩素発生
装置６から取水ポンプ８の入口側へ塩素を戻すための塩
素戻し管である。１６は塩素発生装置６の残渣を放水口
２へ放出するための残渣放出管である。なお本明細書に
おいては、正しくは「次亜塩素酸ナトリウム」と言うべ
きところを、用語の繁雑さを避けるために「塩素」と表
現した部分がある。例えば、「塩素発生装置」などであ
る。FIG. 2 is a system diagram of a chlorine generation facility in a conventional power plant. In the figure, 1 is an intake, 2 is a discharge outlet, 3 is a basin of a cooling tower, 4 is a condenser, 5 is a cooling tower, 6 is a chlorine generator, and 7 is a seawater intake from the intake to the cooling tower basin. A seawater intake pipe, 8 is an intake pump provided on the pipe, 9 is a circulating water pipe that supplies cooling water from the basin 3 of the cooling tower to the condenser 4 and returns the cooling water to the cooling tower.
Is a circulating water pump provided on the pipe, 11 is a blow pipe branched from the condenser 4 between the condenser 4 and the cooling tower 5 and opened to the water discharge port 2, and 12 is provided on the pipe. Blow pump 13 is branched from the water intake pipe 7 and the chlorine generator 6
A raw water intake pipe for chlorine generation for supplying seawater to the pipe, a booster pump 14 provided on the pipe, and a chlorine return pipe 15 for returning chlorine from the chlorine generator 6 to the inlet side of the intake pump 8. . Reference numeral 16 denotes a residue discharge pipe for discharging the residue of the chlorine generator 6 to the water outlet 2. In the present specification, there should be a part where "sodium hypochlorite" should be correctly described as "chlorine" in order to avoid complication of the term. An example is a “chlorine generator”.
【０００４】この系統において、海水は、取水口１から
取水ポンプ８によって、海水取水管７を経て冷却塔のベ
イスン３へ供給される。海水は同ベイスン３から循環水
ポンプ１０によって、循環水管９を経て復水器４へ冷却
水として供給され、同復水器において、蒸気タービンの
排気を冷却し、冷却塔５へ循環させられる。この循環す
る海水は、冷却塔５において蒸発し、塩分などの溶解物
が濃縮するので、溶解物の濃度を一定以下に保つため、
循環水管９の復水器４から冷却塔５に至る配管部分から
分岐するブロー管１１を経てブローポンプ１２によって
循環水を放水口２へ放出する。この放出分を補うため
に、前述の取水ポンプ８によって海水が補給される。In this system, seawater is supplied from an intake port 1 by an intake pump 8 to a basin 3 of a cooling tower via a seawater intake pipe 7. Seawater is supplied as cooling water from the basin 3 to the condenser 4 via the circulating water pipe 9 by the circulating water pump 10, where the condenser cools the exhaust gas of the steam turbine and circulates it to the cooling tower 5. Since the circulating seawater evaporates in the cooling tower 5 and the dissolved matter such as salt is concentrated, the concentration of the dissolved matter is kept below a certain level.
Circulating water is discharged to the water discharge port 2 by a blow pump 12 through a blow pipe 11 branching from a pipe section from the condenser 4 of the circulating water pipe 9 to the cooling tower 5. To compensate for this release, seawater is replenished by the water intake pump 8 described above.
【０００５】この取水口１から取水された海水は取水ポ
ンプ８を出た後、冷却塔ベイスン３の上流側で分岐する
塩素発生用原料水取水管１３を経て分岐し、ブースター
ポンプ１４によって昇圧され、塩素発生装置６に原料水
として供給される。そしてこの塩素発生装置６で生成さ
れた次亜塩素酸ナトリウムは、塩素戻し管１５を通って
取水ポンプ８の入口側に注入されて海洋生成物の付着を
防止する。そして塩素発生装置６の残渣は、残渣放出管
１６を経て放水口２へ放出される。[0005] The seawater taken from the water intake 1 exits the water intake pump 8, branches off through a chlorine generation raw water intake pipe 13 branched on the upstream side of the cooling tower basin 3, and is boosted by a booster pump 14. , To the chlorine generator 6 as raw water. The sodium hypochlorite generated by the chlorine generator 6 is injected into the inlet side of the water intake pump 8 through the chlorine return pipe 15 to prevent the adhesion of marine products. Then, the residue of the chlorine generator 6 is discharged to the water outlet 2 through the residue discharge pipe 16.
【０００６】[0006]
【発明が解決しようとする課題】前記の従来の次亜塩素
酸ナトリウム（ＮａＯＣｌ）の製法では、塩素発生装置
で海水を電気分解して次亜塩素酸ナトリウムが生成され
るが、電気分解には多量の電力を消費するためランニン
グコストが非常に高くつく。In the above-described conventional method for producing sodium hypochlorite (NaOCl), sodium hypochlorite is produced by electrolyzing seawater with a chlorine generator. The running cost is very high because a large amount of power is consumed.
【０００７】本発明は、この問題点を解消するためにな
されたもので、電気分解の電力消費量の低減及びこれに
よるランニングコストの低減を図ろうとするものであ
る。The present invention has been made to solve this problem, and aims to reduce the power consumption of electrolysis and the running cost.
【０００８】[0008]
【課題を解決するための手段】本発明は上記課題を解決
したものであって、発電プラントの復水器に海水を冷却
水として供給し冷却塔との間で循環させると共に、その
循環水中の塩分等溶解物の濃度の上昇を防ぐために循環
水の一部をブロー水として外部へ放出する系統に設備さ
れるものであって、塩素発生装置に原料水として海水を
供給し、その海水を電気分解して次亜塩素酸ナトリウム
を発生させ、これを系統内に注入して系統内の機器への
海洋生成物の付着を防止する発電プラントの塩素発生設
備において、上記塩素発生装置に原料水を供給する塩素
発生用原料水取水管を、復水器と冷却塔との間の循環水
系から分岐させ、原料水としてブロー水を用いるように
した。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and supplies seawater as cooling water to a condenser of a power plant, circulates the same with a cooling tower, and circulates water in the circulating water. This system is installed in a system that discharges part of circulating water to the outside as blow water in order to prevent the concentration of dissolved substances such as salts from rising.It supplies sea water as raw water to the chlorine generator, and the sea water is Decompose to generate sodium hypochlorite, and inject it into the system to prevent the adhesion of marine products to equipment in the system. The feed water intake pipe for chlorine generation to be supplied was branched from the circulating water system between the condenser and the cooling tower, and blow water was used as the feed water.
【０００９】[0009]
【発明の実施の形態】図１は本発明の実施の一形態に係
る発電プラントにおける塩素発生装置の系統図である。
本発明の系統が従来の系統と異る点は、従来のブロー管
１１とブローポンプ１２とを廃止し、同ブロー管が元分
岐していた位置に塩素発生用原料水取水管を接続するよ
う接続位置を変更したものである。即ち新しい塩素発生
用原料水取水管１３Ａは、従来の塩素発生用原料水取水
管１３の接続位置を変えたもので、循環水配管９の復水
器４から冷却塔５に至る配管部分から分岐している。同
原料水取水管１３Ａには従来通り、ブースターポンプ１
４が設けられ、さらに塩素発生装置６が接続されてい
る。同装置６で発生した次亜塩素酸ナトリウムは従来通
り塩素戻し管１５を通って取水ポンプ８の上流側へ注入
される。塩素発生装置６の残渣は従来通り残渣放出管１
６を経て放水口２へ放出される。上記の構成は別の見方
をすれば、従来のブロー管上に塩素発生装置を設置し、
原料水としてブロー水を用いるようにしたものと見るこ
ともできる。上記以外の部分の構成は従来技術（図２）
と同じである。なお、塩素発生用原料水取水管１３Ａは
復水器と冷却塔を循環する循環水系の何処から分岐させ
てもよい。FIG. 1 is a system diagram of a chlorine generator in a power plant according to an embodiment of the present invention.
The system of the present invention is different from the conventional system in that the conventional blow pipe 11 and the blow pump 12 are eliminated, and the raw water intake pipe for chlorine generation is connected to the position where the blow pipe originally branched. The connection position has been changed. That is, the new chlorine-generating raw water intake pipe 13A is obtained by changing the connection position of the conventional chlorine-generating raw water intake pipe 13 and branches off from the pipe section from the condenser 4 to the cooling tower 5 of the circulating water pipe 9. doing. The booster pump 1 is connected to the raw water intake pipe 13A as before.
4 is provided, and a chlorine generator 6 is further connected. The sodium hypochlorite generated in the device 6 is injected into the upstream side of the water intake pump 8 through the chlorine return pipe 15 as in the conventional case. The residue of the chlorine generator 6 is the same as the residue discharge pipe 1 as before.
The water is discharged to the water discharge port 2 through 6. Put another way, the above configuration is to install a chlorine generator on a conventional blow pipe,
It can be seen that blow water is used as raw water. The configuration of the other parts is the conventional technology (FIG. 2)
Is the same as In addition, the raw material water intake pipe 13A for chlorine generation may be branched from anywhere in the circulating water system that circulates through the condenser and the cooling tower.
【００１０】本実施形態においては、循環水の一部が循
環水管９から分岐し、ブースターポンプ１４で昇圧さ
れ、塩素発生装置６にその原料水として供給される。同
塩素発生装置６で生成された次亜塩素酸ナトリウムは塩
素戻し管１５を経て取水ポンプ８の入口側に注入されて
海洋生成物の付着を防止する。塩素発生装置１６の残渣
は、残渣放出管１６を経て放水口に放出される。したが
ってこの系統は、循環水の中の塩分等溶解物の濃度を一
定以下に保つブローの作用と、次亜塩素酸ナトリウムを
発生させて系に戻す作用とを兼ねている。In the present embodiment, part of the circulating water branches off from the circulating water pipe 9, is pressurized by a booster pump 14, and is supplied to the chlorine generator 6 as its raw water. The sodium hypochlorite generated by the chlorine generator 6 is injected into the inlet side of the water intake pump 8 through the chlorine return pipe 15 to prevent the adhesion of marine products. The residue of the chlorine generator 16 is discharged to a water outlet through a residue discharge pipe 16. Therefore, this system has both the function of blowing to keep the concentration of dissolved substances such as salt in the circulating water at a certain level or less, and the function of generating sodium hypochlorite and returning it to the system.
【００１１】前述のように、この設備では冷却塔５にお
いて循環水の水分が蒸発し、塩分濃度が高くなる。本実
施形態では、塩分濃度の高くなった海水を循環水管９か
ら分岐して塩素発生装置６の原料水としている。一般に
塩素濃度が高いほど塩素発生装置６における電気分解に
要する消費電力は少なくてすむ。したがって本実施形態
の系統では、従来技術に比して少い消費電力で塩素を発
生させ、系に戻すことができる。さらに循環水の塩分等
溶解物の濃度を調節することができる。As described above, in this facility, the water in the circulating water evaporates in the cooling tower 5 and the salt concentration increases. In the present embodiment, seawater having a high salt concentration is branched from the circulating water pipe 9 to be used as raw water for the chlorine generator 6. In general, the higher the chlorine concentration, the smaller the power consumption required for electrolysis in the chlorine generator 6. Therefore, in the system of the present embodiment, chlorine can be generated with less power consumption than in the related art, and can be returned to the system. Further, the concentration of the dissolved substance such as the salt content of the circulating water can be adjusted.
【００１２】[0012]
【発明の効果】本発明の発電プラントの塩素発生設備に
おいては、塩素発生装置に原料水を供給する塩素発生用
原料水取水管を、復水器と冷却塔との間の循環水系から
分岐させ、原料水としてブロー水を用いるようにしてあ
る。復水器と冷却塔を循環する循環水の水分は冷却塔に
よって蒸発し、塩素濃度が高くなっている。一般に、電
気分解によって同量の次亜塩素酸ナトリウムを発生する
に要する電力使用量は、塩素濃度が高いほど少い。本発
明の設備では、上記のように塩素濃度の高い循環水を原
料水として電気分解を行うので、電力使用量を低減する
ことができ、ランニングコストの低減を図ることができ
る。さらに循環水の塩分等溶解物の濃度を調節すること
ができる。In the chlorine generating equipment of the power plant according to the present invention, a raw water intake pipe for chlorine generation for supplying raw water to the chlorine generating device is branched from a circulating water system between the condenser and the cooling tower. In this case, blow water is used as raw water. The water in the circulating water circulating through the condenser and the cooling tower is evaporated by the cooling tower, and the chlorine concentration is high. In general, the power consumption required to generate the same amount of sodium hypochlorite by electrolysis is lower as the chlorine concentration is higher. In the facility of the present invention, since the electrolysis is performed using the circulating water having a high chlorine concentration as the raw material water as described above, the power consumption can be reduced, and the running cost can be reduced. Further, the concentration of the dissolved substance such as the salt content of the circulating water can be adjusted.
【図１】本発明の実施の一形態に係る発電プラントにお
ける塩素発生設備の系統図。FIG. 1 is a system diagram of a chlorine generation facility in a power plant according to an embodiment of the present invention.
【図２】従来の発電プラントにおける塩素発生設備の系
統図。FIG. 2 is a system diagram of a chlorine generation facility in a conventional power plant.
１ 取水口 ２ 放水口 ３ 冷却塔ベイスン ４ 復水器 ５ 冷却塔 ６ 塩素発生装置 ７ 取水管 ８ 取水ポンプ ９ 循環水管 １０ 循環水ポンプ １１ ブロー管 １２ ブローポンプ １３，１３Ａ 塩素発生用原料水取水管 １４ ブースターポンプ １５ 塩素戻し管 １６ 残渣放出管 DESCRIPTION OF SYMBOLS 1 Intake port 2 Outlet 3 Cooling tower basin 4 Condenser 5 Cooling tower 6 Chlorine generator 7 Intake pipe 8 Intake pump 9 Circulating water pipe 10 Circulating water pump 11 Blow pipe 12 Blow pump 13,13A Raw water intake pipe for chlorine generation 14 Booster pump 15 Chlorine return pipe 16 Residue discharge pipe
Claims (1)
して供給し冷却塔との間で循環させると共に、その循環
水中の塩分等溶解物の濃度の上昇を防ぐために循環水の
一部をブロー水として外部へ放出する系統に設備される
ものであって、塩素発生装置に原料水として海水を供給
し、その海水を電気分解して次亜塩素酸ナトリウムを発
生させ、これを系統内に注入して系統内の機器への海洋
生成物の付着を防止する発電プラントの塩素発生設備に
おいて、上記塩素発生装置に原料水を供給する塩素発生
用原料水取水管を、復水器と冷却塔との間の循環水系か
ら分岐させ、原料水としてブロー水を用いるようにした
ことを特徴とする発電プラントの塩素発生設備。1. Seawater is supplied to a condenser of a power plant as cooling water and circulated between the cooling tower and a part of the circulating water in order to prevent an increase in the concentration of dissolved substances such as salts in the circulating water. It is installed in a system that discharges it as blow water to the outside, supplies seawater as raw material water to the chlorine generator, electrolyzes the seawater to generate sodium hypochlorite, and puts this into the system In a chlorine generation facility of a power plant that injects and prevents marine products from adhering to equipment in the system, a chlorine generation raw water intake pipe that supplies raw water to the chlorine generation device includes a condenser and a cooling tower. Characterized in that the water is branched from the circulating water system and blow water is used as raw water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10593197A JPH10300367A (en) | 1997-04-23 | 1997-04-23 | Chlorine generating facility of power generation plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10593197A JPH10300367A (en) | 1997-04-23 | 1997-04-23 | Chlorine generating facility of power generation plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10300367A true JPH10300367A (en) | 1998-11-13 |
Family
ID=14420609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10593197A Withdrawn JPH10300367A (en) | 1997-04-23 | 1997-04-23 | Chlorine generating facility of power generation plant |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10300367A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104729178A (en) * | 2015-03-19 | 2015-06-24 | 中国能源建设集团广东省电力设计研究院有限公司 | Power plant seawater once-through cooling system |
-
1997
- 1997-04-23 JP JP10593197A patent/JPH10300367A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104729178A (en) * | 2015-03-19 | 2015-06-24 | 中国能源建设集团广东省电力设计研究院有限公司 | Power plant seawater once-through cooling system |
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| A300 | Withdrawal of application because of no request for examination |
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