JPS60183012A - Steam converter apparatus - Google Patents

Steam converter apparatus

Info

Publication number
JPS60183012A
JPS60183012A JP3723684A JP3723684A JPS60183012A JP S60183012 A JPS60183012 A JP S60183012A JP 3723684 A JP3723684 A JP 3723684A JP 3723684 A JP3723684 A JP 3723684A JP S60183012 A JPS60183012 A JP S60183012A
Authority
JP
Japan
Prior art keywords
water
feed
dissolved oxygen
tank
steam converter
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
JP3723684A
Other languages
Japanese (ja)
Inventor
Takashi Omachi
大町 隆
Tanji Nakamuta
中牟田 端士
Takashi Morimoto
敬 森本
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.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP3723684A priority Critical patent/JPS60183012A/en
Publication of JPS60183012A publication Critical patent/JPS60183012A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To effectively remove dissolved oxygen in feed water in a steam converter during the operation of plant, by arranging an N2-gas supply apparatus in the water feed tank of the steam converter to form an N2-gas atmosphere in said tank. CONSTITUTION:When a power plant is started, feed water 3 transferred from a condensed water booster pump 1 is stored in a water feed tank 2 in high dissolved oxygen content and transferred to a degassifier 8 through a drain cooler 6 by a water feed pump 2 and degassed under heating. The residual dissolved oxygen concn. of feed water 15 is reduced to about 50ppb by this degassifier 8 and stored in a steam converter 10 through a pipe 9. An N2-gas supply apparatus 23 is arranged in the water feed tank 2 so as to cover feed water 3 in the water feed tank 2 with N2-gas and the dissolved oxygen concn. of feed water 3 at the time of usual operation can be held to 50ppb or less and said feed water 3 is sent to the steam converter 10 and stored therein.

Description

【発明の詳細な説明】 第1図は、従来の火力発電用ボイラのスチームコンバー
タ装置の70ーシートヲ示す。
DETAILED DESCRIPTION OF THE INVENTION FIG. 1 shows 70 sheets of a conventional steam converter device for a boiler for thermal power generation.

第1図において、復水プースタボンプ1から移送された
給水は、その溶存酸素濃度が5 0 PPI)以下で、
給水タンク2に供給され、貯留される。
In FIG. 1, the feed water transferred from the condensate pump 1 has a dissolved oxygen concentration of 50 PPI) or less,
The water is supplied to the water tank 2 and stored there.

しかし、この給水タンク2の上部は大気開放となってい
る為、給水タンク2内の給水3の溶存酸素濃度は、0,
5〜2 PPmと高くなっているウ給水タンク2内部の
給水3は、それから、管4を経て、給水ポンプ5により
ドレンクーラー6に移送されて熱交換され、その後管7
を経て脱気器8に移送されて加熱脱気される。こり脱気
器8で、給水は、その溶存酸素濃度が5 0 PPb程
度まで低減され、それから管9を経てスチームコンバー
タ」0へ貯留される。管11は、給水15の水質を調整
するための連続ブロー管である。
However, since the upper part of this water supply tank 2 is open to the atmosphere, the dissolved oxygen concentration of the supply water 3 in the water supply tank 2 is 0,
The water supply 3 inside the water supply tank 2, which is as high as 5 to 2 PPm, is then transferred to a drain cooler 6 by a water supply pump 5 via a pipe 4 for heat exchange, and then transferred to a pipe 7.
It is then transferred to a deaerator 8 where it is heated and degassed. In the dust deaerator 8, the dissolved oxygen concentration of the feed water is reduced to about 50 PPb, and then the water is stored in the steam converter via a pipe 9. The pipe 11 is a continuous blow pipe for adjusting the water quality of the water supply 15.

また、ヒドラジンタンク12からスチームコンバータ用
薬注ボンプ13により゛管14を経て給水ポンプ5の出
口に薬注できるようになっている。
Further, chemicals can be injected from the hydrazine tank 12 to the outlet of the water supply pump 5 via a pipe 14 using a steam converter chemical injection pump 13.

なお、スチームコンバータ10へ貯留されタ給水150
大部分は、発生蒸気となり、管16経て重油加熱器ヘソ
ダー17に移送される。この重油加熱器ヘッダ−17で
使用された後の蒸気は、再び、管18を経て、給水タン
ク2に戻るようになっている。
In addition, the water stored in the steam converter 10 and the water supplied to it 150
Most of it becomes generated steam and is transferred to the heavy oil heater hesodar 17 via the pipe 16. The steam after being used in the heavy oil heater header 17 returns to the water supply tank 2 via a pipe 18 again.

さらに、ボイラ1′9で発生した蒸気の一部分は、スチ
ームコンバータ1o内のスチームコンバータ加熱管20
で給水I5と熱交換された後、ドレンタンク21に貯留
され、それからドレンクーラー加熱管22を経てドレン
クーラー6で給水3と熱交換されるようになっている。
Furthermore, a portion of the steam generated in the boiler 1'9 is transferred to the steam converter heating pipe 20 in the steam converter 1o.
After being heat exchanged with the feed water I5, it is stored in the drain tank 21, and then passed through the drain cooler heating pipe 22 and exchanged heat with the feed water 3 in the drain cooler 6.

しかl−1以」一連へたような従来のスチームコンバー
タ装置は、次に述べるような欠点がある。
However, the conventional steam converter device, which has a series of 1-1 or more failures, has the following drawbacks.

給水タンク2の」−ニ部が人気開放となっているので、
給水3の溶存酸素が増え、金属の腐食に多大な悪影響を
及ばず。、その為に、下記のような不都合が生じる。
The second part of water tank 2 is open to the public, so
Dissolved oxygen in feed water 3 increases and does not have a significant negative effect on metal corrosion. , Therefore, the following inconveniences occur.

(1)給水3の溶存酸素が高いので、スチームコンバー
タ専用の薬注装置12〜14が必要である。
(1) Since the dissolved oxygen in the water supply 3 is high, chemical injection devices 12 to 14 dedicated to the steam converter are required.

(2) スチームコンバータ10の給水15の水質を調
整するために、常時1条の連続ブローを実施しているの
で、熱損失が大きい。
(2) In order to adjust the water quality of the water supply 15 of the steam converter 10, one stream of continuous blowing is always performed, so heat loss is large.

(3)給水3の溶存酸素を低下させる為に、常時脱気器
8を連続運転しなければならない。
(3) In order to reduce dissolved oxygen in the feed water 3, the deaerator 8 must be operated continuously at all times.

(4)給水3の溶存酸素が高いので、スチームコンバー
タ加熱管20及びドレンクーラー加熱管220旧質をス
テンレス鋼に変更しなければならない。
(4) Since the dissolved oxygen in the feed water 3 is high, the steam converter heating tube 20 and the drain cooler heating tube 220 must be replaced with stainless steel.

本発明は、このような従来の問題を解消するためになさ
れたもので、プラント運転時にスチームコンバータ系統
内の給水中の溶存酸素を効果的に除去し、よシ効率的な
運転ができる装置を提供するものである。
The present invention was made in order to solve these conventional problems, and provides a device that can effectively remove dissolved oxygen from the water supply in the steam converter system during plant operation and enable more efficient operation. This is what we provide.

本発明は、スチームコンバータ給水タンクの内部にN2
ガスを供給するN2ガス供給装置を設置することにより
、給水タンクの内部をN2ガス雰囲気にし、これにより
給水タンク内の給水の溶存酸素濃度を50 PPb以下
に保持できるようにしたことを特徴とする。
The present invention provides N2 inside the steam converter water tank.
By installing an N2 gas supply device that supplies gas, the inside of the water supply tank is made into an N2 gas atmosphere, thereby making it possible to maintain the dissolved oxygen concentration of the supply water in the water supply tank at 50 PPb or less. .

以下第2図を参照して本発明の好適な一実施例について
詳述する。
A preferred embodiment of the present invention will be described in detail below with reference to FIG.

第2図において、第1図に示したものと同一の部分には
同一の参照符号を付して表わし、その詳細な説明は省略
する。
In FIG. 2, the same parts as those shown in FIG. 1 are denoted by the same reference numerals, and detailed explanation thereof will be omitted.

しかして、本発明によれば、給水タンク2の内部にN2
ガスを供給するN2ガス供給装置23が設置されている
。このN2ガス供給装置23はN2 ガス加圧装置24
を包含し、とのN2ガス加圧装置24と給水タンク2と
を連絡しているN2ガス供給管25にはN2ガス圧力調
節弁26が設置されて、給水タンク2内をN2ガスで規
定の圧力に調整できるようになっており、これによシ給
水タンク2内部の給水3はN2ガスで被われるようにな
っている。
Therefore, according to the present invention, N2 is stored inside the water tank 2.
A N2 gas supply device 23 is installed to supply gas. This N2 gas supply device 23 is an N2 gas pressurizing device 24.
An N2 gas pressure regulating valve 26 is installed in the N2 gas supply pipe 25 that includes the The pressure can be adjusted so that the water supply 3 inside the water supply tank 2 is covered with N2 gas.

捷な、給水タンク2内部圧力が異常に上昇した場合には
、給水タンク2と連絡しである安全弁27が作動するよ
うになっている。
If the internal pressure of the water tank 2 rises abnormally, a safety valve 27 connected to the water tank 2 is activated.

なお、給水タンク2の上部には、空気抜き弁28が取り
つけである。
Note that an air vent valve 28 is attached to the upper part of the water tank 2.

上記のようなN2ガス供給装置23を設置することによ
り、通常運転時は、給水3の溶存酸素a度を50 PP
b 以下に保持でき、給水ポンプ5によってドレンクー
ラー6、慣7及び脱気器バイパス管29 ヲ経てスチー
ムコンバータ10へ貯留される。
By installing the N2 gas supply device 23 as described above, during normal operation, the dissolved oxygen a degree of the water supply 3 can be reduced to 50 PP.
b The water can be maintained at or below 100 ml, and is stored in the steam converter 10 by the water supply pump 5 via the drain cooler 6, the drain 7, and the deaerator bypass pipe 29.

発電プラントの起動時には、復水ブースタポンプ1から
移送される給水3の溶存酸素は高いまま給水タンク2内
に貯留され給水ポンプ5によってドレンクーラー6を経
て脱気器8に移送され、加熱脱気される。この脱気器8
で給水15の溶存酸素濃度はjOPPb程度まで低減さ
れ、管9を経てスチームコンバータ10へ貯留される。
When the power generation plant is started up, the dissolved oxygen in the feed water 3 transferred from the condensate booster pump 1 is stored in the water tank 2 at a high level, and is transferred by the feed water pump 5 to the deaerator 8 via the drain cooler 6, where it is heated and degassed. be done. This deaerator 8
The dissolved oxygen concentration of the water supply 15 is reduced to approximately jOPPb, and the water is stored in the steam converter 10 via the pipe 9.

起動時、約3時間で復水ブースタポンプ1から移送され
る給水の溶存酸素濃度は、50 PPb以下になり、給
水タンク2に貯留される。
At the time of startup, the dissolved oxygen concentration of the feed water transferred from the condensate booster pump 1 becomes 50 PPb or less in about 3 hours and is stored in the water feed tank 2.

この時点で、脱気器8の運転を停止し、脱気器バイパス
管29を通してスチームコンバータ10へ貯留される。
At this point, the operation of the deaerator 8 is stopped, and the steam is stored in the steam converter 10 through the deaerator bypass pipe 29.

以上述べたように、本発明によれば、従来のスチームコ
ンバータに比べ、給水の溶存酸素濃度を効果的に除去で
き、したがって次に述べるような効果が得られる。
As described above, according to the present invention, the dissolved oxygen concentration of the feed water can be removed more effectively than the conventional steam converter, and therefore the following effects can be obtained.

(1)給水3の溶存酸素が、通常運転時には、20PP
b以下になるので、薬注装置が不要である。
(1) Dissolved oxygen in feed water 3 is 20PP during normal operation.
Since the amount is less than b, a chemical injection device is not required.

(2) 給水3の溶存酸素が20 PPb以下になるの
で、スチームコンバータ10の給水15の水質調整用ブ
ロー管11からの蒸気のブローが少く゛なり、これによ
シ熱損失が少くなる。
(2) Since the dissolved oxygen in the feed water 3 is 20 PPb or less, the amount of steam blown from the blow pipe 11 for adjusting the water quality of the feed water 15 of the steam converter 10 is reduced, thereby reducing heat loss.

(3)発電プラントの起動時は、給水3の溶存酸素が高
い場合、脱気器8を運転するが、通常運転時は、給水3
の溶存酸素濃度が20 ppb以下になるので、脱気器
8の運転を停止し、脱気器バイパス管29を活用するこ
とにより、脱気器8に使用している蒸気が不要になる。
(3) When starting up the power plant, if the dissolved oxygen in the feed water 3 is high, the deaerator 8 is operated, but during normal operation, the deaerator 8 is operated.
Since the dissolved oxygen concentration becomes 20 ppb or less, the operation of the deaerator 8 is stopped and the deaerator bypass pipe 29 is utilized, thereby making the steam used in the deaerator 8 unnecessary.

(4) 給水3の溶存酸素が低くなるので、スチームコ
ンバータ加熱管20及びドレンクーラー加熱管22の材
質をボイラ熱交換器用炭素鋼鋼管に変更でき、低コスト
になる。
(4) Since dissolved oxygen in the feed water 3 is lowered, the material of the steam converter heating tube 20 and the drain cooler heating tube 22 can be changed to carbon steel tubes for the boiler heat exchanger, resulting in lower costs.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は従来例を示す図、第2図は本発明の一実施例を
示す図である。 1・・復水ブースタポンプ、2・・給水タンク、6・・
ドレンクーラー、8・・脱気器、10・・スチームコン
バータ、17・・重油加熱器へツタ−119・・ボイラ
、21・・ドレンタンク、23・・N2ガス供給装置、
24・・N2ガス加圧装置、25・・N2ガス供給管、
26・・N2ガス圧力調節弁、27・・安全弁、28・
・空気抜き弁、29・・脱気器バイパス管。 第f図 第?図
FIG. 1 is a diagram showing a conventional example, and FIG. 2 is a diagram showing an embodiment of the present invention. 1. Condensate booster pump, 2. Water tank, 6.
Drain cooler, 8... Deaerator, 10... Steam converter, 17... Heavy oil heater to 119... Boiler, 21... Drain tank, 23... N2 gas supply device,
24...N2 gas pressurization device, 25...N2 gas supply pipe,
26...N2 gas pressure control valve, 27...safety valve, 28...
・Air vent valve, 29... Deaerator bypass pipe. Figure f? figure

Claims (1)

【特許請求の範囲】[Claims] スチーノ、コンソメ−夕給水タンクの内部にN2ガスを
供給するN2ガス供給装置を具備したことを特徴とする
スチームコンバータ装置。
A steam converter device comprising an N2 gas supply device that supplies N2 gas to the inside of a water supply tank.
JP3723684A 1984-03-01 1984-03-01 Steam converter apparatus Pending JPS60183012A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3723684A JPS60183012A (en) 1984-03-01 1984-03-01 Steam converter apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3723684A JPS60183012A (en) 1984-03-01 1984-03-01 Steam converter apparatus

Publications (1)

Publication Number Publication Date
JPS60183012A true JPS60183012A (en) 1985-09-18

Family

ID=12491970

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3723684A Pending JPS60183012A (en) 1984-03-01 1984-03-01 Steam converter apparatus

Country Status (1)

Country Link
JP (1) JPS60183012A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4861352A (en) * 1987-12-30 1989-08-29 Union Carbide Corporation Method of separating a gas and/or particulate matter from a liquid
JPH01317586A (en) * 1988-06-20 1989-12-22 Osaka Oxygen Ind Ltd Device to remove dissolved oxygen in water as material to be used for drinks such as beer and soft drink

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4861352A (en) * 1987-12-30 1989-08-29 Union Carbide Corporation Method of separating a gas and/or particulate matter from a liquid
JPH01317586A (en) * 1988-06-20 1989-12-22 Osaka Oxygen Ind Ltd Device to remove dissolved oxygen in water as material to be used for drinks such as beer and soft drink

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