JPH09119604A - Condensate deaerating device for exhaust gas boiler - Google Patents
Condensate deaerating device for exhaust gas boilerInfo
- Publication number
- JPH09119604A JPH09119604A JP27757395A JP27757395A JPH09119604A JP H09119604 A JPH09119604 A JP H09119604A JP 27757395 A JP27757395 A JP 27757395A JP 27757395 A JP27757395 A JP 27757395A JP H09119604 A JPH09119604 A JP H09119604A
- Authority
- JP
- Japan
- Prior art keywords
- condensate
- economizer
- temperature
- deaerator
- exhaust gas
- 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- Withdrawn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
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、排ガスボイラの高
さを低減することができる排ガスボイラの復水脱気装置
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exhaust gas boiler condensate degassing apparatus capable of reducing the height of the exhaust gas boiler.
【０００２】[0002]
【従来の技術】従来の排ガスボイラの復水脱気装置を、
図２に示す。復水１は給水予熱器１０で加熱された上、
脱気用蒸気ライン７から脱気用蒸気が供給される外部脱
気器２へ導入される。外部脱気器２で加熱され脱気され
た復水は、給水ポンプ３によって節炭器４に供給され、
ここで排ガスボイラからの排ガスによって加熱される。
１１は復水昇温ポンプ１２をもち給水予熱器１０の出口
側から復水を給水予熱器１０の入口側へ戻して給水予熱
器１０の復水の温度を昇温させる復水昇温ラインであ
り、また、１３は流調弁１４をもち、給水予熱器１０を
バイパスして復水を外部脱気器１２に導入する給水予熱
器バイパスラインである。2. Description of the Related Art A conventional condensate deaerator for an exhaust gas boiler is
As shown in FIG. Condensate 1 was heated by the water supply preheater 10,
Degassing steam line 7 is introduced into external deaerator 2 to which degassing steam is supplied. Condensate heated by the external deaerator 2 and deaerated is supplied to the economizer 4 by the water supply pump 3.
Here, it is heated by the exhaust gas from the exhaust gas boiler.
Reference numeral 11 denotes a condensate temperature raising line that has a condensate temperature raising pump 12 and returns condensate from the outlet side of the water preheater 10 to the inlet side of the water preheater 10 to raise the temperature of the condensate of the water preheater 10. Yes, 13 is a feedwater preheater bypass line that has a flow control valve 14 and that bypasses the feedwater preheater 10 and introduces condensate into the external deaerator 12.
【０００３】この排ガスボイラの復水脱気装置では、復
水１を、給水予熱器１０で適当な温度まで昇温した上、
この温度よりも０℃〜７℃程度高い温度を飽和蒸気温度
とする圧力を内圧として設定されている外部脱気器２へ
導入する。外部脱気器２においては、脱気用蒸気ライン
７からの加熱脱気用蒸気で復水の温度を前記０℃〜７℃
上昇させて復水の加熱脱気を行い、その上で復水を節炭
器４に供給する。In this condensate degassing device for an exhaust gas boiler, the condensate 1 is heated to an appropriate temperature by a feed water preheater 10 and
It is introduced into the external deaerator 2 whose internal pressure is set to a pressure at which the saturated steam temperature is higher than this temperature by about 0 ° C to 7 ° C. In the external deaerator 2, the temperature of the condensate is set to 0 ° C. to 7 ° C. with the heating degassing steam from the degassing steam line 7.
The condensate is heated and deaerated by raising the temperature and then the condensate is supplied to the economizer 4.
【０００４】また、節炭器１０へ導入される排ガスボイ
ラの排気によって腐食が起る上限の温度（本明細書では
これをガス側腐食温度という）が極めて高い場合には、
給水予熱器２の加熱では不充分であるので、給水予熱器
バイパスライン１３によって復水の全量を外部脱気器２
に導入し、給水予熱器１０は空焚きとした上で多量の脱
気用蒸気で加熱して復水の脱気と昇温を行っている。When the upper limit temperature at which corrosion occurs due to the exhaust gas from the exhaust gas boiler introduced into the economizer 10 (this is referred to as the gas side corrosion temperature in this specification) is extremely high,
Since the heating of the feedwater preheater 2 is insufficient, the feedwater preheater bypass line 13 is used to remove the entire amount of condensate from the external deaerator 2.
In addition, the feed water preheater 10 is not fired and is heated with a large amount of degassing steam to deaerate and raise the temperature of the condensate.
【０００５】ちなみに、排ガスボイラに排ガスを供給す
るガスタービンがＬＮＧ焚きの時には、排ガスに腐食成
分が含まれないが、外部脱気器２の飽和温度が水露点以
下であると外部脱気器２より復水が供給される節炭器４
では炭酸腐食が発生するので、外部脱気器２の飽和温度
を水露点以上にする必要がある。しかし、排ガスボイラ
に排ガスを供給するガスタービンが油焚きの場合には、
硫酸腐食対策のために水露点より極めて高い酸露点に外
部脱気器２の飽和温度を維持する必要があり、前記のよ
うに復水の全量を給水予熱器バイパスライン１３より外
部脱気器２に導入して多量の脱気用蒸気で復水を加熱す
ることが行われる。By the way, when the gas turbine that supplies the exhaust gas to the exhaust gas boiler is LNG-fired, the exhaust gas does not contain a corrosive component, but if the saturation temperature of the external deaerator 2 is below the water dew point, the external deaerator 2 Economizer 4 to which more condensate is supplied
Since carbonic acid corrosion occurs, it is necessary to set the saturation temperature of the external deaerator 2 to the water dew point or higher. However, if the gas turbine that supplies the exhaust gas to the exhaust gas boiler is oil-fired,
As a countermeasure against sulfuric acid corrosion, it is necessary to maintain the saturation temperature of the external deaerator 2 at an acid dew point extremely higher than the water dew point, and as described above, the entire amount of condensate is supplied from the feed water preheater bypass line 13 to the external deaerator 2. The condensate is heated by introducing a large amount of degassing steam.
【０００６】[0006]
【発明が解決しようとする課題】前記の従来の技術で
は、給水予熱器を用いているので、脱気用蒸気量は若干
少なくてすむものの給水予熱器を節炭器とは別個に設置
する必要がある。このために、給水予熱器の出入口管寄
せ、連絡管及び復水昇温ポンプの設置を必要とし、また
給水加熱器を設けるためにバンクを２個に分割するとバ
ンク間クリアランスの設定を必要とし、これによって排
ガスボイラの高さが上昇することになる。In the above-mentioned prior art, since the feedwater preheater is used, it is necessary to install the feedwater preheater separately from the economizer, although the degassing steam amount can be slightly small. There is. For this reason, it is necessary to install the inlet / outlet pipe of the feed water preheater, the connecting pipe and the condensate water temperature raising pump, and to set the clearance between the banks when the bank is divided into two in order to install the feed water heater, This will increase the height of the exhaust gas boiler.
【０００７】本発明は、以上の欠点を解消することがで
きる排ガスボイラの復水脱気装置を提供しようとするも
のである。The present invention is intended to provide a condensate degassing apparatus for an exhaust gas boiler, which can eliminate the above drawbacks.
【０００８】[0008]
【課題を解決するための手段】本発明の排ガスボイラの
復水脱気装置は、予熱されない復水が直接導入される脱
気器、前記脱気器より復水が供給され復水を昇温させる
節炭器、及び前記節炭器の出口側の復水を前記脱気器へ
戻し前記脱気器から節炭器に供給される復水をガス側腐
食温度まで昇温させる復水昇温ラインを設けた。A condensate deaerator for an exhaust gas boiler according to the present invention is a deaerator into which condensate that is not preheated is directly introduced, and condensate is supplied from the deaerator to raise the temperature of the condensate. The economizer and the condensate on the outlet side of the economizer are returned to the deaerator to raise the condensate supplied from the deaerator to the economizer to the gas side corrosion temperature. Line was set up.
【０００９】本発明では、給水予熱器を廃止し、給水予
熱器の伝熱面積を節炭器に吸収させたこととなり、給水
予熱器の出入口管寄せ、連絡管、復水昇温ポンプが省略
され、ガス給水予熱器を設けるためのバンク間クリアラ
ンスが省略され、従って、排ガスボイラの高さを低減さ
せることができる。In the present invention, the feedwater preheater is abolished and the heat transfer area of the feedwater preheater is absorbed in the economizer, so that the inlet and outlet pipes of the feedwater preheater, the connecting pipe, and the condensate water temperature raising pump are omitted. Therefore, the clearance between banks for providing the gas water preheater is omitted, and therefore the height of the exhaust gas boiler can be reduced.
【００１０】[0010]
【発明の実施の形態】２は予熱されない復水１が直接導
入され脱気用蒸気ライン７から脱気用蒸気が供給される
外部脱気器、４は給水ポンプ３により外部脱気器２より
復水が供給され排ガスボイラの排気によって復水を加熱
する節炭器、５は流調弁６を備え節炭器４の出口側と外
部脱気器２とを接続する復水昇温ラインである。BEST MODE FOR CARRYING OUT THE INVENTION 2 is an external deaerator in which condensate 1 which is not preheated is directly introduced and deaerating steam is supplied from a deaerating steam line 7, 4 is a water supply pump 3 from the external deaerator 2. Condenser is supplied with condensate and heats the condensate by the exhaust gas from the exhaust gas boiler. Reference numeral 5 is a condensate temperature raising line that connects the outlet side of the economizer 4 with the flow regulating valve 6 and the external deaerator 2. is there.
【００１１】本実施の形態では、復水は外部脱気器２に
よって脱気用蒸気ライン７からの脱気用蒸気によって加
熱されて脱気された上、節炭器４で更に加熱される。節
炭器４で加熱された復水の一部は、復水昇温ライン５を
経て、外部脱気器２へ戻され、外部脱気器２内の復水の
温度を昇温させ、外部脱気器２から節炭器４に供給され
る復水をガス側腐食温度まで昇温させる。これによっ
て、節炭器４における腐食を防止することができる。In the present embodiment, the condensate is heated by the external deaerator 2 by the deaerating steam from the deaerating steam line 7 to be deaerated, and is further heated by the economizer 4. Part of the condensate heated by the economizer 4 is returned to the external deaerator 2 via the condensate temperature raising line 5 to raise the temperature of the condensate in the external deaerator 2 and Condensate supplied from the deaerator 2 to the economizer 4 is heated to the gas side corrosion temperature. Thereby, the corrosion of the economizer 4 can be prevented.
【００１２】本実施の形態では、以上の通り、給水予熱
器と省略しても、節炭器４に供給される復水をガス側腐
食温度まで昇温させて節炭器４における腐食を防止する
ことができる。従って、給水予熱器の伝熱面積を節炭器
４に吸収させたこととなり、排ガスボイラの高さを低く
することができる。In the present embodiment, as described above, even if the feed water preheater is omitted, the condensate supplied to the economizer 4 is heated to the gas side corrosion temperature to prevent corrosion in the economizer 4. can do. Therefore, the heat transfer area of the feed water preheater is absorbed by the economizer 4, and the height of the exhaust gas boiler can be reduced.
【００１３】なお、復水器の性能向上により、復水器で
復水がかなり真空脱気され、かつ、排ガスボイラに排ガ
スを供給するガスタービンが腐食成分を含まないＬＮＧ
焚の時には、前記外部脱気器２の飽和温度を水露点に設
定して脱気用蒸気の導入による脱気を行わないように
し、また節炭器４を低圧のものとし、かつ、復水の外部
脱気器飽和温度までの昇温を復水昇温ライン５による復
水の循環にのみによって実施することができる。Due to the improved performance of the condenser, the condensate is considerably deaerated in the condenser, and the gas turbine that supplies the exhaust gas to the exhaust gas boiler does not contain a corrosive component.
At the time of heating, the saturation temperature of the external deaerator 2 is set to the water dew point to prevent deaeration by introducing the deaeration steam, and the economizer 4 has a low pressure and the condensate The temperature rise to the external deaerator saturation temperature can be performed only by circulating the condensate through the condensate temperature raising line 5.
【００１４】[0014]
【発明の効果】本発明では、従来の給水予熱器の伝熱面
積を節炭器に吸収させたこととなり給水予熱器の出入口
管寄せ・連絡管、復水ボンプが省略され、かつ、給水予
熱器のバンク間クリアランスの省略されて、排ガスボイ
ラの高さを低減させることができる。According to the present invention, the heat transfer area of the conventional feed water preheater is absorbed in the economizer, so that the inlet / outlet pipe connecting / connecting pipe and the condensate pump of the feed water preheater are omitted, and the feed water preheating is performed. Since the clearance between the banks of the reactor is omitted, the height of the exhaust gas boiler can be reduced.
【図１】本発明の実施の一形態の全体図である。FIG. 1 is an overall view of an embodiment of the present invention.
【図２】従来の排ガスボイラの脱気装置の全体図であ
る。FIG. 2 is an overall view of a conventional degassing device for an exhaust gas boiler.
１ 復水 ２ 外部脱気器 ３ 給水ポンプ ４ 節炭器 ５ 復水昇温ライン ６ 流調弁 ７ 脱気用蒸気ライン 1 Condensate 2 External deaerator 3 Water supply pump 4 Conservator 5 Condensate temperature raising line 6 Flow control valve 7 Degassing steam line
Claims (1)
器、前記脱気器より復水が供給され復水を昇温させる節
炭器、及び前記節炭器出口側の復水を前記脱気器へ戻し
前記脱気器から節炭器に供給される復水をガス側腐食温
度まで昇温させる復水昇温ラインを備えたことを特徴と
する排ガスボイラの復水脱気装置。1. A deaerator in which condensate that is not preheated is directly introduced, a economizer that raises the temperature of the condensate by supplying the condensate from the deaerator, and the condensate on the outlet side of the economizer is degassed. A condensate degassing apparatus for an exhaust gas boiler, comprising a condensate temperature raising line for returning the condensate supplied from the deaerator to the economizer to a gas side corrosion temperature by returning to the vaporizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27757395A JPH09119604A (en) | 1995-10-25 | 1995-10-25 | Condensate deaerating device for exhaust gas boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27757395A JPH09119604A (en) | 1995-10-25 | 1995-10-25 | Condensate deaerating device for exhaust gas boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09119604A true JPH09119604A (en) | 1997-05-06 |
Family
ID=17585377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27757395A Withdrawn JPH09119604A (en) | 1995-10-25 | 1995-10-25 | Condensate deaerating device for exhaust gas boiler |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09119604A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102183009A (en) * | 2011-05-13 | 2011-09-14 | 江苏双良锅炉有限公司 | Water supply system of condensing steam boiler |
| CN102635847A (en) * | 2012-04-26 | 2012-08-15 | 浙江中烟工业有限责任公司 | Water feeding system for multiple condensing boilers |
| CN104791762A (en) * | 2015-03-25 | 2015-07-22 | 上海大众祥源动力供应有限公司 | Automatic exhaust device for deaerator |
| CN114060796A (en) * | 2021-11-02 | 2022-02-18 | 中国船舶重工集团公司第七0三研究所 | Take exhaust-heat boiler extension economizer system of one-level deoxidization heat source |
-
1995
- 1995-10-25 JP JP27757395A patent/JPH09119604A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102183009A (en) * | 2011-05-13 | 2011-09-14 | 江苏双良锅炉有限公司 | Water supply system of condensing steam boiler |
| CN102635847A (en) * | 2012-04-26 | 2012-08-15 | 浙江中烟工业有限责任公司 | Water feeding system for multiple condensing boilers |
| CN104791762A (en) * | 2015-03-25 | 2015-07-22 | 上海大众祥源动力供应有限公司 | Automatic exhaust device for deaerator |
| CN114060796A (en) * | 2021-11-02 | 2022-02-18 | 中国船舶重工集团公司第七0三研究所 | Take exhaust-heat boiler extension economizer system of one-level deoxidization heat source |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20030107 |