JP2002180804A - Turbine equipment and exhaust heat recovering boiler device and water treatment method - Google Patents
Turbine equipment and exhaust heat recovering boiler device and water treatment methodInfo
- Publication number
- JP2002180804A JP2002180804A JP2000373866A JP2000373866A JP2002180804A JP 2002180804 A JP2002180804 A JP 2002180804A JP 2000373866 A JP2000373866 A JP 2000373866A JP 2000373866 A JP2000373866 A JP 2000373866A JP 2002180804 A JP2002180804 A JP 2002180804A
- Authority
- JP
- Japan
- Prior art keywords
- drum
- recovery boiler
- heat recovery
- water
- pressure
- 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.)
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Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
Landscapes
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は排熱回収ボイラ装置
と蒸気タービンとを組み合わせたタービン設備及び熱源
からの熱により蒸気を発生させる排熱回収ボイラ装置及
び排熱回収ボイラのドラムの水処理を行う水処理方法に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a turbine equipment in which an exhaust heat recovery boiler apparatus and a steam turbine are combined, an exhaust heat recovery boiler apparatus for generating steam by heat from a heat source, and water treatment of a drum of the exhaust heat recovery boiler. It relates to the water treatment method to be performed.
【０００２】[0002]
【従来の技術】エネルギー資源の有効利用と経済性の観
点から、発電設備（発電プラント）では様々な高効率化
が図られている。例えば、ガスタービンと蒸気タービン
を組み合わせたタービン発電プラント（複合発電プラン
ト）もその一つである。複合発電プラントでは、ガスタ
ービンからの高温の排気ガスが排熱回収ボイラ装置に送
られ、排熱回収ボイラ装置内で過熱ユニットを介して蒸
気を発生させ、発生した蒸気を蒸気タービンに送って蒸
気タービンで仕事をするようになっている。過熱ユニッ
トは節炭器、過熱器、ボイラ（ドラム及び蒸発器）等を
有しており、ボイラの熱回収率を向上させるため、複数
段（例えば、高圧、中圧、低圧）の過熱ユニットが備え
られている。そして、高圧、中圧、低圧の過熱ユニット
のそれぞれに過熱器やドラム等が備えられている。2. Description of the Related Art From the viewpoints of effective use of energy resources and economic efficiency, various high efficiencies have been achieved in power generation facilities (power generation plants). For example, a turbine power plant (combined power plant) combining a gas turbine and a steam turbine is one of them. In a combined cycle power plant, high-temperature exhaust gas from a gas turbine is sent to an exhaust heat recovery boiler device, where steam is generated via a superheating unit in the exhaust heat recovery boiler device, and the generated steam is sent to a steam turbine to generate steam. I work with turbines. The superheating unit has a economizer, a superheater, a boiler (drum and evaporator), etc. In order to improve the heat recovery rate of the boiler, a multistage (for example, high pressure, medium pressure, low pressure) superheating unit is provided. Provided. Each of the high-, medium-, and low-pressure superheat units is provided with a superheater, a drum, and the like.
【０００３】排熱回収ボイラ装置では、過熱ユニットが
圧力別に多重に設けられ、各ユニット間で水や蒸気等が
送られる配管が多数設けられ、また、蒸気タービンとの
間で蒸気が送られる配管が設けられている。これら配管
はりん酸塩処理やアルカリ処理（水処理）が施されて浸
食・腐食（エロージョン・コロージョン）等が防止され
ている。具体的には、過熱ユニットのドラム内にりん酸
ナトリウムや苛性ソーダを注入してりん酸処理またはア
ルカリ処理を施し、配管内のエロージョン・コロージョ
ンを防止している。In an exhaust heat recovery boiler, a superheat unit is multiplexed for each pressure, a large number of pipes for sending water, steam, and the like are provided between the units, and a pipe for sending steam to and from a steam turbine. Is provided. These pipes are subjected to a phosphate treatment or an alkali treatment (water treatment) to prevent erosion and corrosion (erosion and corrosion). Specifically, sodium phosphate or caustic soda is injected into the drum of the overheating unit and subjected to phosphoric acid treatment or alkali treatment to prevent erosion and corrosion in the piping.
【０００４】[0004]
【発明が解決しようとする課題】従来の排熱回収ボイラ
装置における水処理では、りん酸塩処理やアルカリ処理
により配管内のエロージョン・コロージョンを防止して
いるが、過熱ユニットが圧力別に多重に設けられた排熱
回収ボイラ装置では、注入したりん酸ナトリウムやアル
カリが特に高圧ボイラ部で濃縮してアルカリ腐食が発生
する問題が生じていた。また、近年は、環境問題等から
排出されるリンの規制が問題になってきている。In the conventional water treatment in a waste heat recovery boiler, erosion and corrosion in the piping are prevented by a phosphate treatment or an alkali treatment. However, multiple heating units are provided for each pressure. In the waste heat recovery boiler device, there is a problem that the injected sodium phosphate or alkali is concentrated particularly in the high-pressure boiler section and alkali corrosion occurs. In recent years, regulations on phosphorus discharged from environmental issues and the like have become a problem.
【０００５】本発明は上記状況に鑑みてなされたもの
で、アルカリ腐食の問題をなくして配管内のエロージョ
ン・コロージョンを防止することができるタービン設備
及び排熱回収ボイラ装置及び水処理方法を提供すること
を目的とする。The present invention has been made in view of the above circumstances, and provides a turbine facility, an exhaust heat recovery boiler apparatus, and a water treatment method capable of preventing erosion and corrosion in piping without causing a problem of alkali corrosion. The purpose is to:
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するため
の本発明のタービン設備の構成は、熱源からの熱によっ
て蒸気を発生させる排熱回収ボイラと、排熱回収ボイラ
の蒸気により作動する蒸気タービンと、蒸気タービンの
排気を復水する復水器と、復水器で凝縮された復水を排
熱回収ボイラ側に送給する給水系統とからなるタービン
設備において、排熱回収ボイラのドラム内の給水のｐＨ
を９．０以上とするように給水系統に薬剤を注入する薬
剤注入手段を設けたことを特徴とする。To achieve the above object, the construction of the turbine equipment of the present invention comprises an exhaust heat recovery boiler for generating steam by heat from a heat source, and a steam operated by the steam of the exhaust heat recovery boiler. In a turbine facility consisting of a turbine, a condenser for condensing exhaust gas from a steam turbine, and a water supply system for supplying condensed water condensed by the condenser to the exhaust heat recovery boiler, a drum of the exhaust heat recovery boiler is used. PH of water supply inside
Is provided with a medicine injecting means for injecting a medicine into a water supply system so that the value is 9.0 or more.
【０００７】また、上記目的を達成するための本発明の
タービン設備の構成は、熱源からの熱によって蒸気を発
生させる排熱回収ボイラと、排熱回収ボイラの蒸気によ
り作動する蒸気タービンと、蒸気タービンの排気を復水
する復水器と、復水器で凝縮された復水を排熱回収ボイ
ラ側に送給する給水系統とからなるタービン設備におい
て、給水系統にアンモニア系薬剤を注入する薬剤注入手
段を設け、排熱回収ボイラのドラム内の給水のアンモニ
ア濃度を０．５ｐｐｍ以上にするように給水系統にアン
モニア系薬剤を注入する薬剤注入手段を設けたことを特
徴とする。In order to achieve the above object, the construction of the turbine equipment according to the present invention comprises an exhaust heat recovery boiler for generating steam by heat from a heat source, a steam turbine operated by steam from the exhaust heat recovery boiler, Chemicals that inject ammonia-based chemicals into the water supply system in a turbine facility consisting of a condenser that condenses the exhaust gas from the turbine and a water supply system that sends the condensate condensed by the condenser to the waste heat recovery boiler An injection means is provided, and a chemical injection means is provided for injecting an ammonia-based chemical into a water supply system such that the ammonia concentration of feedwater in the drum of the exhaust heat recovery boiler is 0.5 ppm or more.
【０００８】また、上記目的を達成するための本発明の
タービン設備の構成は、熱源からの熱によって蒸気を発
生させる排熱回収ボイラと、排熱回収ボイラの蒸気によ
り作動する蒸気タービンと、蒸気タービンの排気を復水
する復水器と、復水器で凝縮された復水を排熱回収ボイ
ラ側に送給する給水系統とからなるタービン設備におい
て、給水系統にアンモニア系薬剤を注入する薬剤注入手
段を設け、排熱回収ボイラのドラム内の給水のｐＨを
９．０以上とすると共に給水のアンモニア濃度を０．５
ｐｐｍ以上にするように給水系統にアンモニア系薬剤を
注入する薬剤注入手段を設けたことを特徴とする。In order to achieve the above object, the construction of the turbine equipment according to the present invention comprises: a heat recovery steam generator for generating steam by heat from a heat source; a steam turbine operated by steam from the heat recovery steam generator; Chemicals that inject ammonia-based chemicals into the water supply system in a turbine facility consisting of a condenser that condenses the exhaust gas from the turbine and a water supply system that sends the condensate condensed by the condenser to the waste heat recovery boiler Injection means is provided to adjust the pH of the feedwater in the drum of the exhaust heat recovery boiler to 9.0 or more and to adjust the ammonia concentration of the feedwater to 0.5.
It is characterized in that a chemical injecting means for injecting an ammonia-based chemical into the water supply system so as to make the amount not less than ppm is provided.
【０００９】そして、復水器で凝縮された復水からアン
モニアを回収するアンモニア回収手段を備えたことを特
徴とする。また、熱源からの熱はガスタービンの排気で
あるコンバインドプラントであることを特徴とする。[0009] An ammonia recovery means for recovering ammonia from the condensate condensed in the condenser is provided. The heat from the heat source is a combined plant that is exhaust gas from a gas turbine.
【００１０】上記目的を達成するための本発明の排熱回
収ボイラ装置の構成は、高圧側蒸気を発生させる高圧側
ユニット及び低圧側蒸気を発生させる低圧側ユニットか
らなり熱源からの熱を回収して高圧側蒸気及び低圧側蒸
気を発生させる排熱回収ボイラと、排熱回収ボイラに給
水する給水系統とからなる排熱回収ボイラ装置におい
て、排熱回収ボイラの低圧側ユニットのドラム内の給水
のｐＨを９．０以上とするように給水系統に薬剤を注入
する薬剤注入手段を設けたことを特徴とする。The exhaust heat recovery boiler of the present invention for achieving the above object comprises a high-pressure side unit for generating high-pressure side steam and a low-pressure side unit for generating low-pressure side steam, and recovers heat from a heat source. In a waste heat recovery boiler device including a waste heat recovery boiler that generates high pressure side steam and low pressure side steam and a water supply system that supplies water to the waste heat recovery boiler, water supply in a drum of a low pressure side unit of the waste heat recovery boiler is performed. A medicine injecting means for injecting medicine into a water supply system so that the pH is 9.0 or more is provided.
【００１１】また、上記目的を達成するための本発明の
排熱回収ボイラ装置の構成は、高圧側蒸気を発生させる
高圧側ユニット及び低圧側蒸気を発生させる低圧側ユニ
ットからなり熱源からの熱を回収して高圧側蒸気及び低
圧側蒸気を発生させる排熱回収ボイラと、排熱回収ボイ
ラに給水する給水系統とからなる排熱回収ボイラ装置に
おいて、給水系統にアンモニア系薬剤を注入する薬剤注
入手段を設け、排熱回収ボイラの低圧側ユニットのドラ
ム内の給水のアンモニア濃度を０．５ｐｐｍ以上にする
ように給水系統にアンモニア系薬剤を注入する薬剤注入
手段を設けたことを特徴とする。The exhaust heat recovery boiler according to the present invention for achieving the above object has a high-pressure side unit for generating high-pressure side steam and a low-pressure side unit for generating low-pressure side steam. A chemical injection means for injecting an ammonia-based chemical into a water supply system in an exhaust heat recovery boiler apparatus comprising a heat recovery steam generator that recovers and generates high-pressure steam and low-pressure steam, and a water supply system that supplies water to the heat recovery steam generator. And a chemical injection means for injecting an ammonia-based chemical into the water supply system so that the ammonia concentration of the feedwater in the drum of the low pressure side unit of the exhaust heat recovery boiler is 0.5 ppm or more.
【００１２】また、上記目的を達成するための本発明の
排熱回収ボイラ装置の構成は、高圧側蒸気を発生させる
高圧側ユニット及び低圧側蒸気を発生させる低圧側ユニ
ットからなり熱源からの熱を回収して高圧側蒸気及び低
圧側蒸気を発生させる排熱回収ボイラと、排熱回収ボイ
ラに給水する給水系統とからなる排熱回収ボイラ装置に
おいて、給水系統にアンモニア系薬剤を注入する薬剤注
入手段を設け、排熱回収ボイラの低圧側ユニットのドラ
ム内の給水のｐＨを９．０以上とすると共に給水のアン
モニア濃度を０．５ｐｐｍ以上にするように給水系統に
アンモニア系薬剤を注入する薬剤注入手段を設けたこと
を特徴とする。The exhaust heat recovery boiler of the present invention for achieving the above object has a high-pressure unit for generating high-pressure steam and a low-pressure unit for generating low-pressure steam. A chemical injection means for injecting an ammonia-based chemical into a water supply system in an exhaust heat recovery boiler apparatus comprising a heat recovery steam generator that recovers and generates high-pressure steam and low-pressure steam, and a water supply system that supplies water to the heat recovery steam generator. A chemical injection for injecting an ammonia-based chemical into a water supply system such that the pH of the feedwater in the drum of the low pressure side unit of the exhaust heat recovery boiler is 9.0 or more and the ammonia concentration of the feedwater is 0.5 ppm or more. Means are provided.
【００１３】そして、排熱回収ボイラには低圧ドラム及
び中圧ドラム及び高圧ドラムが備えられ、低圧ドラムが
低圧側ユニットのドラムとされ、中圧ドラム及び高圧ド
ラムが高圧側ユニットのドラムとされ、中圧ドラムに給
水を行う中圧給水ポンプが備えられ、高圧ドラムに給水
を行う高圧給水ポンプが備えられ、低圧ドラム及び中圧
ドラム及び高圧ドラムに並行に給水が行われることを特
徴とする。The exhaust heat recovery boiler includes a low-pressure drum, a medium-pressure drum, and a high-pressure drum. The low-pressure drum is a drum of the low-pressure unit, and the medium-pressure drum and the high-pressure drum are drums of the high-pressure unit. A medium-pressure water pump for supplying water to the medium-pressure drum is provided, a high-pressure water pump for supplying water to the high-pressure drum is provided, and water is supplied to the low-pressure drum, the medium-pressure drum, and the high-pressure drum in parallel.
【００１４】また、排熱回収ボイラには低圧ドラム及び
中圧ドラム及び高圧ドラムが備えられ、中圧ドラムが低
圧側ユニットのドラムとされ、高圧ドラムが高圧側ユニ
ットのドラムとされ、中圧ドラム及び高圧ドラムに給水
をを行う高・中圧給水ポンプが備えられ、低圧ドラム水
が中圧ドラム及び高圧ドラムの給水とされていることを
特徴とする。The exhaust heat recovery boiler is provided with a low-pressure drum, a medium-pressure drum, and a high-pressure drum. The medium-pressure drum is a drum of the low-pressure unit, the high-pressure drum is a drum of the high-pressure unit, and the medium-pressure drum. And a high / medium pressure water supply pump for supplying water to the high pressure drum, wherein the low pressure drum water is supplied to the medium pressure drum and the high pressure drum.
【００１５】また、中圧ドラムの給水に薬剤を注入する
中圧ドラム薬剤注入手段を設け、高圧ドラムの給水に薬
剤を注入する高圧ドラム薬剤注入手段を設けたことを特
徴とする。The present invention is characterized in that a medium pressure drum medicine injection means for injecting medicine into the water supply of the medium pressure drum is provided, and a high pressure drum medicine injection means for injecting medicine into the water supply of the high pressure drum is provided.
【００１６】上記目的を達成するための本発明の水処理
方法は、熱源からの熱によってドラムの給水を蒸発・過
熱することで蒸気を発生させる排熱回収ボイラの水処理
方法において、ドラム内の給水のｐＨを９．０以上とす
るように給水に薬剤を注入することを特徴とする。In order to achieve the above object, the present invention provides a water treatment method for an exhaust heat recovery boiler that generates steam by evaporating and overheating feed water of a drum by heat from a heat source. The method is characterized by injecting a drug into the feed water so that the pH of the feed water is 9.0 or more.
【００１７】また、上記目的を達成するための本発明の
水処理方法は、熱源からの熱によってドラムの給水を蒸
発・過熱することで蒸気を発生させる排熱回収ボイラの
水処理方法において、ドラム内の給水のアンモニア濃度
を０．５ｐｐｍ以上にするように給水にアンモニア系薬
剤を注入することを特徴とする。Further, the water treatment method of the present invention for achieving the above object is a water treatment method for an exhaust heat recovery boiler that generates steam by evaporating and overheating feed water of a drum by heat from a heat source. It is characterized in that an ammonia-based chemical is injected into the feed water so that the ammonia concentration of the feed water in the inside becomes 0.5 ppm or more.
【００１８】また、上記目的を達成するための本発明の
水処理方法は、熱源からの熱によってドラムの給水を蒸
発・過熱することで蒸気を発生させる排熱回収ボイラの
水処理方法において、ドラム内の給水のｐＨを９．０以
上とすると共に給水のアンモニア濃度を０．５ｐｐｍ以
上にするように給水にアンモニア系薬剤を注入すること
を特徴とする。The water treatment method of the present invention for achieving the above object is also directed to a water treatment method for a waste heat recovery boiler that generates steam by evaporating and overheating feed water of a drum by heat from a heat source. It is characterized by injecting an ammonia-based drug into the feed water so that the pH of the feed water in the feed water is 9.0 or more and the ammonia concentration of the feed water is 0.5 ppm or more.
【００１９】[0019]
【発明の実施の形態】図１には本発明の第１実施形態例
に係る排熱回収ボイラ装置を備えたタービン設備の全体
系統、図２にはアンモニアの分配率と圧力との関係を表
すグラフ、図３にはボイラ水のｐＨ及びアンモニア濃度
を説明する表を示してある。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an entire system of a turbine facility provided with an exhaust heat recovery boiler according to a first embodiment of the present invention, and FIG. 2 shows the relationship between the distribution ratio of ammonia and pressure. A graph and FIG. 3 show a table for explaining the pH and the ammonia concentration of the boiler water.
【００２０】図１に示すように、ガスタービン１からの
排気ガスが排熱回収ボイラ２に送られるようになってお
り、排熱回収ボイラ２には高圧過熱ユニット３、中圧過
熱ユニット４及び低圧過熱ユニット５が備えられてい
る。排熱回収ボイラ２内では高圧過熱ユニット３、中圧
過熱ユニット４及び低圧過熱ユニット５を介して蒸気を
発生させ、発生した蒸気を蒸気タービン６に送って蒸気
タービン６で仕事をするようになっている。蒸気タービ
ン６の排気は復水器８で凝縮されて復水され、復水ポン
プ９により排熱回収ボイラ２に導入される。排熱回収ボ
イラ装置は、排熱回収ボイラ２及び復水ポンプ９からの
給水ライン７（給水系統）によって構成されている。As shown in FIG. 1, the exhaust gas from the gas turbine 1 is sent to an exhaust heat recovery boiler 2. The exhaust heat recovery boiler 2 includes a high-pressure superheat unit 3, an intermediate-pressure superheat unit 4, A low pressure heating unit 5 is provided. In the exhaust heat recovery boiler 2, steam is generated through the high-pressure superheating unit 3, the medium-pressure superheating unit 4, and the low-pressure superheating unit 5, and the generated steam is sent to the steam turbine 6 to work in the steam turbine 6. ing. The exhaust gas of the steam turbine 6 is condensed in the condenser 8 and condensed, and is introduced into the exhaust heat recovery boiler 2 by the condensate pump 9. The waste heat recovery boiler device includes a waste heat recovery boiler 2 and a water supply line 7 (water supply system) from a condensate pump 9.
【００２１】高圧過熱ユニット３は、高圧過熱器１１、
高圧ドラム１２、高圧蒸発器１３及び高圧節炭器１４を
有している。高圧ドラム１２の水は排熱回収ボイラ２内
に配された高圧蒸発器１３で過熱循環され、高圧ドラム
１２内で高圧蒸気を発生する。高圧ドラム１２で発生し
た高圧蒸気は排熱回収ボイラ２内に配された高圧過熱器
１１で過熱されて蒸気タービン６に導入される。The high-pressure superheater unit 3 comprises a high-pressure superheater 11,
It has a high-pressure drum 12, a high-pressure evaporator 13, and a high-pressure economizer 14. The water in the high-pressure drum 12 is superheated and circulated in a high-pressure evaporator 13 disposed in the exhaust heat recovery boiler 2, and generates high-pressure steam in the high-pressure drum 12. The high-pressure steam generated by the high-pressure drum 12 is superheated by a high-pressure superheater 11 arranged in the exhaust heat recovery boiler 2 and is introduced into the steam turbine 6.
【００２２】中圧過熱ユニット４は、中圧過熱器２１、
中圧ドラム２２、中圧蒸発器２３及び中圧節炭器２４を
有している。中圧ドラム２２の水は排熱回収ボイラ２内
に配された中圧蒸発器２３で過熱循環され、中圧ドラム
２２内で中圧蒸気を発生する。中圧ドラム２２で発生し
た中圧蒸気は中圧過熱器２１を通って再熱器２５に導入
され、再熱器２５で再熱されて蒸気タービン６に導入さ
れる。中圧過熱器２１からの蒸気はガスタービン１の高
温部（燃焼器や翼等）の冷却用としてガスタービン１側
に導入される。The medium pressure heating unit 4 includes a medium pressure heating device 21,
It has a medium pressure drum 22, a medium pressure evaporator 23 and a medium pressure economizer 24. The water in the medium pressure drum 22 is superheated and circulated in a medium pressure evaporator 23 disposed in the exhaust heat recovery boiler 2, and generates medium pressure steam in the medium pressure drum 22. The intermediate-pressure steam generated by the intermediate-pressure drum 22 is introduced into the reheater 25 through the intermediate-pressure superheater 21, reheated by the reheater 25, and introduced into the steam turbine 6. The steam from the intermediate-pressure superheater 21 is introduced into the gas turbine 1 for cooling a high-temperature portion (such as a combustor or a blade) of the gas turbine 1.
【００２３】低圧過熱ユニット５は、低圧過熱器３１、
低圧ドラム３２、低圧蒸発器３３及び低圧節炭器３４を
有している。低圧ドラム３２の水は排熱回収ボイラ２内
に配された低圧蒸発器３３で過熱循環され、低圧ドラム
３２内で低圧蒸気を発生する。低圧ドラム３２で発生し
た低圧蒸気は低圧過熱器２１を通って蒸気タービン６に
導入される。The low-pressure superheater unit 5 includes a low-pressure superheater 31,
It has a low-pressure drum 32, a low-pressure evaporator 33 and a low-pressure economizer 34. The water in the low-pressure drum 32 is superheated and circulated in a low-pressure evaporator 33 disposed in the exhaust heat recovery boiler 2, and generates low-pressure steam in the low-pressure drum 32. The low-pressure steam generated by the low-pressure drum 32 is introduced into the steam turbine 6 through the low-pressure superheater 21.
【００２４】低圧ドラム３２には、復水器８からの復水
が脱気器１０及び低圧節炭器３４を介して給水される。
低圧節炭器３４の出口側の流路は高圧ドラム１２及び中
圧ドラム２２につながる給水ライン４１が設けられ、給
水ライン４１からは、高圧給水ポンプ４２を介して高圧
ドラム１２に給水が行われ、中圧給水ポンプ４３を介し
て中圧ドラム２２に給水が行われる。即ち、低圧ドラム
３２及び中圧ドラム２２及び高圧ドラム１２に並行に給
水が行われるようになっており、低圧ドラム３２が低圧
側ユニットのドラムとされ、中圧ドラム２２及び高圧ド
ラム１２が高圧側ユニットのドラムとされている。Condensate from the condenser 8 is supplied to the low-pressure drum 32 via the deaerator 10 and the low-pressure economizer 34.
A water supply line 41 connected to the high-pressure drum 12 and the medium-pressure drum 22 is provided in the flow path on the outlet side of the low-pressure economizer 34, and water is supplied from the water supply line 41 to the high-pressure drum 12 via a high-pressure water supply pump 42. Water is supplied to the medium pressure drum 22 via the medium pressure water supply pump 43. That is, water is supplied to the low-pressure drum 32, the medium-pressure drum 22, and the high-pressure drum 12 in parallel. The low-pressure drum 32 is a drum of the low-pressure unit, and the medium-pressure drum 22 and the high-pressure drum 12 are It is a unit drum.
【００２５】尚、脱気器１０の入口側で復水の一部が復
水器８に戻され、給水ライン４１から分岐して脱気器１
０側に一部の水が戻されるようになっている。排熱回収
ボイラ２内の各機器の配置は一例であり、節炭器や過熱
器の台数や配置はガスタービン１の性能等により適宜変
更されるものである。A part of the condensate is returned to the condenser 8 at the inlet side of the deaerator 10 and branched off from the water supply line 41 to be deaerated.
Part of the water is returned to the zero side. The arrangement of each device in the exhaust heat recovery boiler 2 is an example, and the number and arrangement of the economizers and superheaters are appropriately changed according to the performance of the gas turbine 1 and the like.
【００２６】給水系統である給水ライン７にはｐＨ調整
剤のアンモニアと脱酸素剤のヒドラジンを注入する薬剤
注入手段４５が設けられている。薬剤注入手段４５から
はｐＨ調整用として給水に所定量のアンモニアが注入さ
れ、低圧ドラム３２内の給水のｐＨを９．０以上として
いると共にアンモニア濃度を０．５ｐｐｍ以上となるよ
うにしている。The water supply line 7 serving as a water supply system is provided with a chemical injecting means 45 for injecting ammonia as a pH adjuster and hydrazine as an oxygen scavenger. A predetermined amount of ammonia is injected into the feed water from the chemical injection means 45 for pH adjustment, the pH of the feed water in the low-pressure drum 32 is adjusted to 9.0 or more, and the ammonia concentration is adjusted to 0.5 ppm or more.
【００２７】一般に、給水のｐＨが９．０を下回ると流
れによるエロージョン・コロージョン（腐食・浸食）の
発生が懸念される。このため、低圧ドラム３２内の給水
のｐＨを９．０以上としている。低圧ドラム３２内の給
水の圧力は高圧ドラム１２及び中圧ドラム２２の給水の
圧力よりも低く、アンモニアは蒸発しやすく圧力が低い
程気相側に混合しやすい（液相に混合しにくい）ので、
即ち、気相と液相との分配率の値が高いので、低圧ドラ
ム３２内の給水のｐＨを９．０以上とすることで高圧ド
ラム１２及び中圧ドラム２２の給水のｐＨを９．０より
も高い値にすることができる。In general, when the pH of the water supply falls below 9.0, erosion and corrosion (corrosion / erosion) due to the flow may occur. For this reason, the pH of the supply water in the low-pressure drum 32 is set to 9.0 or more. The pressure of the feedwater in the low-pressure drum 32 is lower than the pressure of the feedwater in the high-pressure drum 12 and the medium-pressure drum 22, and the ammonia evaporates easily and the lower the pressure, the easier it is to mix with the gas phase (the more difficult it is to mix with the liquid phase).
That is, since the value of the distribution ratio between the gas phase and the liquid phase is high, the pH of the feedwater in the low-pressure drum 32 is adjusted to 9.0 or more by setting the pH of the feedwater in the low-pressure drum 32 to 9.0 or higher. Can be higher.
【００２８】図２に示すように、給水の圧力（ｋｇ／ｃ
ｍ2 ）が高くなるにしたがって、アンモニアの分配率
［ＮＨ3 （Ｖ：気相）／ＮＨ3 （Ｌ：液相）］が低くな
る。例えば、高圧ドラム１２の圧力が１３０（ｋｇ／ｃ
ｍ2 ）、中圧ドラム２２の圧力が３０（ｋｇ／ｃ
ｍ2 ）、低圧ドラム３２の圧力が５（ｋｇ／ｃｍ2 ）と
設定されている場合に、高圧ドラム１２での分配率は
２．８、中圧ドラム２２での分配率が５．５、低圧ドラ
ム３２での分配率が１０．０となる。このため、低圧ド
ラム３２では、アンモニアが１：１０の割合で給水の液
相と気相とに分配され、中圧ドラム２２ではアンモニア
が１：５．５の割合で給水の液相と気相とに分配され、
高圧ドラム１２では、１：２．８の割合で給水の液相と
気相とに分配されることになる。As shown in FIG. 2, the feed water pressure (kg / c
As m 2 ) increases, the distribution ratio of ammonia [NH 3 (V: gas phase) / NH 3 (L: liquid phase)] decreases. For example, when the pressure of the high-pressure drum 12 is 130 (kg / c
m 2 ) and the pressure of the medium pressure drum 22 is 30 (kg / c).
m 2 ), when the pressure of the low-pressure drum 32 is set to 5 (kg / cm 2 ), the distribution ratio of the high-pressure drum 12 is 2.8, and the distribution ratio of the medium-pressure drum 22 is 5.5. The distribution rate in the low-pressure drum 32 becomes 10.0. For this reason, in the low pressure drum 32, the ammonia is distributed to the liquid phase and the gas phase of the feed water at a ratio of 1:10, and in the medium pressure drum 22, the ammonia is distributed to the liquid phase and the gas phase of the feed water at a ratio of 1: 5.5. And distributed to
In the high-pressure drum 12, the feed water is distributed into a liquid phase and a gas phase at a ratio of 1: 2.8.
【００２９】上述した排熱回収ボイラ２を備えたタービ
ン設備の水処理方法では、薬剤注入手段４５からは給水
に所定量のアンモニアを注入し、給水のｐＨが、例え
ば、９．９になるようにし、アンモニア濃度が８ｐｐｍ
になるようにする。これにより、図３に示すように、低
圧ドラム３２の給水のｐＨが９．３でアンモニア濃度が
０．８ｐｐｍ（分配率が１０．０のため）となる。ま
た、中圧ドラム２２の給水のｐＨが９．５でアンモニア
濃度が約１．５ｐｐｍ（分配率が５．５のため）とな
る。また、高圧ドラム１２の給水のｐＨが９．７でアン
モニア濃度が約２．９ｐｐｍ（分配率が２．８のため）
となる。In the water treatment method for a turbine facility provided with the exhaust heat recovery boiler 2 described above, a predetermined amount of ammonia is injected into the feed water from the chemical injection means 45 so that the pH of the feed water becomes, for example, 9.9. And the ammonia concentration is 8ppm
So that Thereby, as shown in FIG. 3, the pH of the water supplied to the low-pressure drum 32 is 9.3, and the ammonia concentration is 0.8 ppm (because the distribution ratio is 10.0). Further, the pH of the supply water of the intermediate pressure drum 22 is 9.5 and the ammonia concentration is about 1.5 ppm (because the distribution ratio is 5.5). Further, the pH of the feed water of the high-pressure drum 12 is 9.7 and the ammonia concentration is about 2.9 ppm (because the distribution ratio is 2.8).
Becomes
【００３０】従って、給水のｐＨが最低となる低圧ドラ
ム３２内の給水のｐＨを９．０以上（ｐＨ：９．３）と
することで、中圧ドラム２２及び高圧ドラム１２の給水
のｐＨが９．０以上となる。また、アンモニアの分配率
により、アンモニア濃度が最低となる低圧ドラム３２内
の給水のアンモニア濃度が０．５ｐｐｍ以上（０．８ｐ
ｐｍ）となるようにアンモニアを注入することで、中圧
ドラム２２及び高圧ドラム１２の給水のアンモニア濃度
が０．５ｐｐｍ以上となる。このため、適正なｐＨ及び
アンモニア濃度が維持され、アルカリ腐食の問題をなく
して配管内のエロージョン・コロージョンを防止するこ
とができる。また、低圧ドラム３２及び中圧ドラム２２
及び高圧ドラム１２に並行に給水が行われるため、最小
限のアンモニアの量により適正なｐＨ及びアンモニア濃
度に維持することができる。Accordingly, by setting the pH of the feedwater in the low-pressure drum 32 at which the pH of the feedwater is the lowest to 9.0 or more (pH: 9.3), the pH of the feedwater of the medium-pressure drum 22 and the high-pressure drum 12 is reduced. 9.0 or more. Further, the ammonia concentration of the feedwater in the low-pressure drum 32 at which the ammonia concentration becomes the minimum is 0.5 ppm or more (0.8 p
pm), the ammonia concentration of the feedwater of the medium pressure drum 22 and the high pressure drum 12 becomes 0.5 ppm or more. For this reason, appropriate pH and ammonia concentration are maintained, and erosion and corrosion in the piping can be prevented without the problem of alkali corrosion. The low-pressure drum 32 and the medium-pressure drum 22
In addition, since water is supplied to the high-pressure drum 12 in parallel, it is possible to maintain appropriate pH and ammonia concentration by the minimum amount of ammonia.
【００３１】尚、低圧ドラム３２、中圧ドラム２２及び
高圧ドラム１２の圧力設定により分配率は変わるもので
あり、薬剤注入手段４５から注入するアンモニア量は分
配率により適宜変化させ、低圧ドラム３２内の給水のｐ
Ｈが９．０以上になると共にアンモニア濃度が０．５ｐ
ｐｍ以上となるようなｐＨ及び濃度に給水ライン７の給
水が調整される。The distribution rate varies depending on the pressure settings of the low-pressure drum 32, the medium-pressure drum 22, and the high-pressure drum 12, and the amount of ammonia injected from the chemical injection means 45 is appropriately changed according to the distribution rate. Water supply p
H becomes 9.0 or more and ammonia concentration becomes 0.5p
The supply of water in the water supply line 7 is adjusted to a pH and a concentration that are equal to or more than pm.
【００３２】図４、図５に基づいて本発明の第２実施形
態例を説明する。図４には本発明の第２実施形態例に係
る排熱回収ボイラ装置を備えたタービン設備の全体系
統、図５にはボイラ水のｐＨを説明する表を示してあ
る。尚、図１に示した第１実施形態例と同一部材には同
一符号を付して重複する説明は省略してある。A second embodiment of the present invention will be described with reference to FIGS. FIG. 4 shows an entire system of a turbine facility provided with an exhaust heat recovery boiler device according to a second embodiment of the present invention, and FIG. 5 shows a table for explaining the pH of boiler water. Note that the same members as those of the first embodiment shown in FIG. 1 are denoted by the same reference numerals, and redundant description is omitted.
【００３３】図示のタービン設備の排熱回収ボイラ２
は、給水ライン７からの給水が低圧節炭器３４に送ら
れ、低圧節炭器３４から脱気器１０を介して低圧ドラム
３２に給水が行われる。そして、低圧ドラム３２の水が
給水ライン４１から中圧過熱ユニット４の中圧節炭器２
４及び高圧過熱ユニット３の高圧節炭器１４に送られ、
給水ライン４１には高・中圧給水ポンプ４７が設けられ
ている。即ち、低圧ドラム３２の水が中圧ドラム２２及
び高圧ドラム１２の給水とされ、中圧ドラム２２が低圧
側ユニットのドラムとされ、高圧ドラム１２が高圧側ユ
ニットのドラムとされている。The exhaust heat recovery boiler 2 of the illustrated turbine facility
The water supplied from the water supply line 7 is sent to the low-pressure economizer 34, and water is supplied from the low-pressure economizer 34 to the low-pressure drum 32 via the deaerator 10. Then, the water of the low-pressure drum 32 is supplied from the water supply line 41 to the medium-pressure
4 and sent to the high-pressure economizer 14 of the high-pressure superheating unit 3,
The water supply line 41 is provided with a high / medium pressure water supply pump 47. That is, the water of the low-pressure drum 32 is used as the water supply of the medium-pressure drum 22 and the high-pressure drum 12, the medium-pressure drum 22 is used as the drum of the low-pressure unit, and the high-pressure drum 12 is used as the drum of the high-pressure unit.
【００３４】給水系統である給水ライン７にはアンモニ
アを注入する薬剤注入手段４５が設けられている。薬剤
注入手段４５からは給水に所定量のアンモニアが注入さ
れ、中圧ドラム２２内の給水のｐＨを９．０以上として
いると共にアンモニア濃度を０．５ｐｐｍ以上となるよ
うにしている。The water supply line 7 serving as a water supply system is provided with a chemical injection means 45 for injecting ammonia. A predetermined amount of ammonia is injected into the feed water from the chemical injection means 45, the pH of the feed water in the intermediate pressure drum 22 is adjusted to 9.0 or more, and the ammonia concentration is adjusted to 0.5 ppm or more.
【００３５】上述した排熱回収ボイラ２を備えたタービ
ン設備の水処理方法では、低圧ドラム３２の水が中圧ド
ラム２２及び高圧ドラム１２の給水とされているため、
前述した分配率の関係から、薬剤注入手段４５からは給
水に所定量のアンモニアを注入し、給水のｐＨが、例え
ば、１０．３になるようにし、アンモニア濃度が４４ｐ
ｐｍになるようにする。これにより、図５に示すよう
に、低圧ドラム３２の給水のｐＨが９．８でアンモニア
濃度が４．４ｐｐｍ（分配率が１０．０のため）とな
る。また、中圧ドラム２２の給水のｐＨが９．３でアン
モニア濃度が約０．８ｐｐｍ（分配率が５．５でアンモ
ニア濃度が４．４ｐｐｍの低圧ドラム３２の水が給水さ
れるため）となる。また、高圧ドラム１２の給水のｐＨ
が９．５でアンモニア濃度が約１．６ｐｐｍ（分配率が
２．８でアンモニア濃度が４．４ｐｐｍの低圧ドラム３
２の水が給水されるため）となる。In the water treatment method for the turbine equipment provided with the exhaust heat recovery boiler 2 described above, the water of the low pressure drum 32 is used as the water supply of the medium pressure drum 22 and the high pressure drum 12.
From the above-mentioned relationship of the distribution ratio, a predetermined amount of ammonia is injected into the feed water from the drug injection means 45 so that the pH of the feed water becomes 10.3, for example, and the ammonia concentration becomes 44 p.
pm. Thereby, as shown in FIG. 5, the pH of the water supplied to the low-pressure drum 32 is 9.8 and the ammonia concentration is 4.4 ppm (because the distribution ratio is 10.0). Further, the pH of the feed water of the medium pressure drum 22 is 9.3 and the ammonia concentration is about 0.8 ppm (because the water of the low pressure drum 32 having the distribution ratio of 5.5 and the ammonia concentration of 4.4 ppm is supplied). . In addition, the pH of the feed water of the high-pressure drum 12
9.5 and an ammonia concentration of about 1.6 ppm (a low-pressure drum 3 having a distribution ratio of 2.8 and an ammonia concentration of 4.4 ppm).
2 is supplied).
【００３６】従って、給水のｐＨが最低となる中圧ドラ
ム２２内の給水のｐＨを９．０以上（ｐＨ：９．３）と
することで、低圧ドラム３２及び高圧ドラム１２の給水
のｐＨが９．０以上となる。また、アンモニアの分配率
により、アンモニア濃度が最低となる中圧ドラム２２内
の給水のアンモニア濃度が０．５ｐｐｍ以上（０．８ｐ
ｐｍ）となるようにアンモニアを注入することで、低圧
ドラム３２及び高圧ドラム１２の給水のアンモニア濃度
が０．５ｐｐｍ以上となる。このため、給水ポンプを高
・中圧給水ポンプ４７の１台としてコストを低減させた
排熱回収ボイラ装置で、適正なｐＨ及びアンモニア濃度
が維持され、アルカリ腐食の問題をなくして配管内のエ
ロージョン・コロージョンを防止することができる。Accordingly, by setting the pH of the feed water in the medium pressure drum 22 at which the pH of the feed water is lowest to 9.0 or more (pH: 9.3), the pH of the feed water of the low pressure drum 32 and the high pressure drum 12 is reduced. 9.0 or more. Further, the ammonia concentration of the feed water in the intermediate pressure drum 22 at which the ammonia concentration becomes the lowest is 0.5 ppm or more (0.8 p
pm), the ammonia concentration of the water supplied to the low-pressure drum 32 and the high-pressure drum 12 becomes 0.5 ppm or more. For this reason, the waste heat recovery boiler device, in which the cost is reduced by using the water supply pump as one of the high- and medium-pressure water supply pumps 47, maintains an appropriate pH and ammonia concentration, eliminates the problem of alkali corrosion and eliminates erosion in the piping.・ Corrosion can be prevented.
【００３７】図６に基づいて本発明の第３実施形態例を
説明する。図６には本発明の第３実施形態例に係る排熱
回収ボイラ装置を備えたタービン設備の全体系統を示し
てある。尚、図４に示した第２実施形態例と同一部材に
は同一符号を付して重複する説明は省略してある。A third embodiment of the present invention will be described with reference to FIG. FIG. 6 shows an entire system of a turbine facility provided with an exhaust heat recovery boiler device according to a third embodiment of the present invention. Note that the same members as those of the second embodiment shown in FIG. 4 are denoted by the same reference numerals, and redundant description is omitted.
【００３８】図示の実施形態例では、高圧過熱ユニット
３の高圧節炭器１３の入口側の給水ライン４１に高圧ド
ラム薬剤注入手段１６が設けられ、中圧過熱ユニット４
の中圧節炭器２４の入口側の給水ライン４１に中圧ドラ
ム薬剤注入手段１７が設けられている。高圧ドラム薬剤
注入手段１６及び中圧ドラム薬剤注入手段１７からはア
ンモニアが注入され、高圧ドラム１２の給水及び中圧ド
ラム２２の給水にアンモニアがそれぞれ注入される。In the illustrated embodiment, a high-pressure drum chemical injection means 16 is provided in a water supply line 41 on the inlet side of the high-pressure economizer 13 of the high-pressure superheating unit 3, and the medium-pressure superheating unit 4 is provided.
The medium pressure drum medicine injection means 17 is provided in a water supply line 41 on the inlet side of the medium pressure economizer 24. Ammonia is injected from the high-pressure drum drug injection means 16 and the medium-pressure drum drug injection means 17, and ammonia is injected into the high-pressure drum 12 and the medium-pressure drum 22.
【００３９】上述した排熱回収ボイラ２を備えたタービ
ン設備の水処理方法では、薬剤注入手段４５から給水ラ
イン７の給水に所定量のアンモニアが注入されると共
に、高圧ドラム薬剤注入手段１６及び中圧ドラム薬剤注
入手段１７から高圧ドラム１２の給水及び中圧ドラム２
２の給水にアンモニアがそれぞれ注入されることで、中
圧ドラム２２内の給水のｐＨを９．０以上としていると
共にアンモニア濃度を０．５ｐｐｍ以上となるようにし
ている。In the water treatment method for the turbine equipment provided with the exhaust heat recovery boiler 2 described above, a predetermined amount of ammonia is injected from the chemical injection means 45 into the feed water of the water supply line 7, and the high-pressure drum chemical injection means 16 and Water supply from the high pressure drum 12 to the medium pressure drum 2
By injecting ammonia into the feedwater of No. 2 respectively, the pH of the feedwater in the intermediate pressure drum 22 is adjusted to 9.0 or more and the ammonia concentration is adjusted to 0.5 ppm or more.
【００４０】即ち、薬剤注入手段４５からは給水に所定
量のアンモニアを注入し、給水のｐＨが、例えば、１
０．０になるようにする。これにより、低圧ドラム３２
の給水のｐＨが９．３となる。また、高圧ドラム薬剤注
入手段１６及び中圧ドラム薬剤注入手段１７からのアン
モニアの注入により、中圧ドラム２２の給水のｐＨが
９．５となり、また、高圧ドラム１２の給水のｐＨが
９．７となる。また、アンモニア濃度についても０．５
ｐｐｍ以上に維持されている。That is, a predetermined amount of ammonia is injected into the feed water from the chemical injection means 45, and the pH of the feed water becomes, for example, 1
0.0. Thereby, the low-pressure drum 32
The pH of the supplied water is 9.3. Further, by the injection of ammonia from the high-pressure drum medicine injection means 16 and the medium-pressure drum medicine injection means 17, the pH of the supply water of the medium-pressure drum 22 becomes 9.5, and the pH of the supply water of the high-pressure drum 12 becomes 9.7. Becomes Also, the ammonia concentration is 0.5
ppm is maintained.
【００４１】従って、給水のｐＨが最低となる中圧ドラ
ム２２内の給水のｐＨを９．０以上（ｐＨ：９．３）と
することで、低圧ドラム３２及び高圧ドラム１２の給水
のｐＨが９．０以上となる。このため、給水ポンプを高
・中圧給水ポンプ４７の１台としてコストを低減させた
排熱回収ボイラ装置で、少ないアンモニアの量で適正な
ｐＨ及びアンモニア濃度が維持され、アルカリ腐食の問
題をなくして配管内のエロージョン・コロージョンを防
止することができる。Accordingly, by setting the pH of the feed water in the medium pressure drum 22 at which the pH of the feed water becomes the lowest to 9.0 or more (pH: 9.3), the pH of the feed water of the low pressure drum 32 and the high pressure drum 12 becomes higher. 9.0 or more. For this reason, the waste heat recovery boiler device in which the cost is reduced by using the water supply pump as one of the high / medium pressure water supply pumps 47, the proper pH and ammonia concentration are maintained with a small amount of ammonia, and the problem of alkali corrosion is eliminated. Thus, erosion and corrosion in the piping can be prevented.
【００４２】上述した各実施形態例において、アンモニ
アを系外に排出しないようにするため、復水器８で凝縮
された復水からアンモニアを分離・回収するアンモニア
回収手段を設けることができる。図７にはアンモニア回
収手段を備えた復水器の要部構成を示してある。In each of the above-described embodiments, an ammonia recovery means for separating and recovering ammonia from the condensate condensed in the condenser 8 can be provided in order to prevent the ammonia from being discharged out of the system. FIG. 7 shows a configuration of a main part of a condenser provided with ammonia recovery means.
【００４３】図７に示すように、復水器８からの復水を
真空ポンプ５１で冷却器５２に導入し、冷却器５２で復
水を冷却してアンモニアを分離する。分離されたアンモ
ニアは図示しないタンクに回収されると共に、アンモニ
アが除かれた復水は系外に排出される。または、圧力が
同等のラインに合流される。アンモニアを回収すること
で、アンモニアの排出がなくなり、環境に対して有利と
なる。As shown in FIG. 7, the condensate from the condenser 8 is introduced into a cooler 52 by a vacuum pump 51, and the condensate is cooled by the cooler 52 to separate ammonia. The separated ammonia is collected in a tank (not shown), and the condensate from which the ammonia has been removed is discharged out of the system. Alternatively, the pressure is merged into an equivalent line. By recovering ammonia, there is no emission of ammonia, which is advantageous for the environment.
【００４４】上述した実施形態例は、ガスタービン１と
蒸気タービン６を組み合わせたコンバインドサイクルの
排熱回収ボイラ２として本願発明を適用した例を説明し
たが、多重圧力ボイラを有する排熱回収のボイラであれ
ば、火力発電プラントのボイラに本発明を適用すること
も可能である。In the embodiment described above, an example in which the present invention is applied as the exhaust heat recovery boiler 2 of the combined cycle in which the gas turbine 1 and the steam turbine 6 are combined has been described. However, the exhaust heat recovery boiler having the multiple pressure boiler is described. Then, the present invention can be applied to a boiler of a thermal power plant.
【００４５】[0045]
【発明の効果】本発明のタービン設備は、熱源からの熱
によって蒸気を発生させる排熱回収ボイラと、排熱回収
ボイラの蒸気により作動する蒸気タービンと、蒸気ター
ビンの排気を復水する復水器と、復水器で凝縮された復
水を排熱回収ボイラ側に送給する給水系統とからなるタ
ービン設備において、排熱回収ボイラのドラム内の給水
のｐＨを９．０以上とするように給水系統に薬剤を注入
する薬剤注入手段を設けたので、ドラム内の給水のｐＨ
が９．０以上に維持される。この結果、配管内が適正な
ｐＨに維持され、アルカリ腐食の問題をなくして配管内
のエロージョン・コロージョンを防止することができる
タービン設備とすることが可能となる。The turbine equipment according to the present invention comprises an exhaust heat recovery boiler for generating steam by heat from a heat source, a steam turbine operated by the steam from the exhaust heat recovery boiler, and a condensate for condensing the exhaust of the steam turbine. And a water supply system for supplying condensed water condensed in the condenser to the exhaust heat recovery boiler side, so that the pH of the water supply in the drum of the exhaust heat recovery boiler is 9.0 or more. Is equipped with a drug injection means for injecting a drug into the water supply system, so that the pH of the water supply in the drum
Is maintained at 9.0 or more. As a result, the inside of the pipe is maintained at an appropriate pH, and it is possible to provide a turbine facility capable of preventing erosion and corrosion in the pipe by eliminating the problem of alkali corrosion.
【００４６】また、本発明のタービン設備は、熱源から
の熱によって蒸気を発生させる排熱回収ボイラと、排熱
回収ボイラの蒸気により作動する蒸気タービンと、蒸気
タービンの排気を復水する復水器と、復水器で凝縮され
た復水を排熱回収ボイラ側に送給する給水系統とからな
るタービン設備において、給水系統にアンモニア系薬剤
を注入する薬剤注入手段を設け、排熱回収ボイラのドラ
ム内の給水のアンモニア濃度を０．５ｐｐｍ以上にする
ように給水系統にアンモニア系薬剤を注入する薬剤注入
手段を設けたので、ドラム内の給水のアンモニア濃度が
０．５ｐｐｍ以上に維持される。この結果、配管内が適
正なアンモニア濃度に維持され、アルカリ腐食の問題を
なくして配管内のエロージョン・コロージョンを防止す
ることができるタービン設備とすることが可能となる。Further, the turbine equipment of the present invention includes an exhaust heat recovery boiler for generating steam by heat from a heat source, a steam turbine operated by the steam of the exhaust heat recovery boiler, and a condensate for condensing the exhaust of the steam turbine. And a water supply system for supplying condensate condensed in the condenser to the exhaust heat recovery boiler side, wherein a chemical injection means for injecting an ammonia-based chemical into the water supply system is provided, and a waste heat recovery boiler is provided. Since the chemical injection means for injecting the ammonia-based chemical into the water supply system is provided so that the ammonia concentration of the feedwater in the drum becomes 0.5 ppm or more, the ammonia concentration of the feedwater in the drum is maintained at 0.5 ppm or more. . As a result, the inside of the pipe is maintained at an appropriate ammonia concentration, and the turbine equipment can eliminate the problem of alkali corrosion and prevent erosion and corrosion in the pipe.
【００４７】また、本発明のタービン設備は、熱源から
の熱によって蒸気を発生させる排熱回収ボイラと、排熱
回収ボイラの蒸気により作動する蒸気タービンと、蒸気
タービンの排気を復水する復水器と、復水器で凝縮され
た復水を排熱回収ボイラ側に送給する給水系統とからな
るタービン設備において、給水系統にアンモニア系薬剤
を注入する薬剤注入手段を設け、排熱回収ボイラのドラ
ム内の給水のｐＨを９．０以上とすると共に給水のアン
モニア濃度を０．５ｐｐｍ以上にするように給水系統に
アンモニア系薬剤を注入する薬剤注入手段を設けたの
で、ドラム内の給水のｐＨが９．０以上に維持されると
共に、アンモニア濃度が０．５ｐｐｍ以上に維持され
る。この結果、配管内が適正なｐＨ及びアンモニア濃度
に維持され、アルカリ腐食の問題をなくして配管内のエ
ロージョン・コロージョンを防止することができるター
ビン設備とすることが可能となる。Further, the turbine equipment of the present invention includes an exhaust heat recovery boiler for generating steam by heat from a heat source, a steam turbine operated by the steam from the exhaust heat recovery boiler, and a condensate for condensing exhaust gas from the steam turbine. And a water supply system for supplying condensate condensed in the condenser to the exhaust heat recovery boiler side, wherein a chemical injection means for injecting an ammonia-based chemical into the water supply system is provided, and a waste heat recovery boiler is provided. Since the pH of the feed water in the drum is adjusted to 9.0 or more and the ammonia concentration of the feed water is adjusted to 0.5 ppm or more, a chemical injection means for injecting an ammonia-based drug into the water supply system is provided. The pH is maintained at 9.0 or higher, and the ammonia concentration is maintained at 0.5 ppm or higher. As a result, the inside of the pipe is maintained at an appropriate pH and ammonia concentration, and a turbine facility capable of preventing erosion and corrosion in the pipe without the problem of alkali corrosion can be provided.
【００４８】そして、復水器で凝縮された復水からアン
モニアを回収するアンモニア回収手段を備えたので、ア
ンモニアの排出がなくなり、環境に対して有利となる。Since an ammonia recovery means for recovering ammonia from the condensate condensed in the condenser is provided, the discharge of ammonia is eliminated, which is advantageous for the environment.
【００４９】また、熱源からの熱はガスタービンの排気
であるコンバインドプラントであるので、ガスタービン
と蒸気タービンを組み合わせたコンバインドプラントで
アルカリ腐食の問題をなくして配管内のエロージョン・
コロージョンを防止することができるタービン設備とす
ることが可能となる。Further, since the heat from the heat source is the exhaust gas of the gas turbine in the combined plant, the combined plant combining the gas turbine and the steam turbine eliminates the problem of alkali corrosion and eliminates the erosion and erosion in the piping.
It is possible to provide a turbine facility capable of preventing corrosion.
【００５０】本発明の排熱回収ボイラ装置は、高圧側蒸
気を発生させる高圧側ユニット及び低圧側蒸気を発生さ
せる低圧側ユニットからなり熱源からの熱を回収して高
圧側蒸気及び低圧側蒸気を発生させる排熱回収ボイラ
と、排熱回収ボイラに給水する給水系統と、からなる排
熱回収ボイラ装置において、排熱回収ボイラの低圧側ユ
ニットのドラム内の給水のｐＨを９．０以上とするよう
に給水系統に薬剤を注入する薬剤注入手段を設けたの
で、ｐＨが最低となる低圧側ユニットのドラム内の給水
のｐＨが９．０以上に維持される。この結果、高圧側ユ
ニットを含めてドラム内の給水のｐＨが９．０以上とな
り、配管内が適正なｐＨに維持され、アルカリ腐食の問
題をなくして配管内のエロージョン・コロージョンを防
止することができる排熱回収ボイラ装置とすることが可
能となる。The exhaust heat recovery boiler apparatus of the present invention comprises a high pressure side unit for generating high pressure side steam and a low pressure side unit for generating low pressure side steam, and recovers heat from a heat source to convert the high pressure side steam and low pressure side steam. In a waste heat recovery boiler apparatus including a waste heat recovery boiler to be generated and a water supply system for supplying water to the waste heat recovery boiler, the pH of water supply in a drum of a low pressure side unit of the waste heat recovery boiler is set to 9.0 or more. Since the medicine injecting means for injecting the medicine into the water supply system is provided as described above, the pH of the water supply in the drum of the low-pressure side unit, which minimizes the pH, is maintained at 9.0 or more. As a result, the supply water in the drum including the high-pressure side unit has a pH of 9.0 or more, the inside of the pipe is maintained at an appropriate pH, and the erosion and corrosion in the pipe can be prevented without the problem of alkali corrosion. It is possible to provide a waste heat recovery boiler device that can.
【００５１】また、本発明の排熱回収ボイラ装置は、高
圧側蒸気を発生させる高圧側ユニット及び低圧側蒸気を
発生させる低圧側ユニットからなり熱源からの熱を回収
して高圧側蒸気及び低圧側蒸気を発生させる排熱回収ボ
イラと、排熱回収ボイラに給水する給水系統と、からな
る排熱回収ボイラ装置において、給水系統にアンモニア
系薬剤を注入する薬剤注入手段を設け、排熱回収ボイラ
の低圧側ユニットのドラム内の給水のアンモニア濃度を
０．５ｐｐｍ以上にするように給水系統にアンモニア系
薬剤を注入する薬剤注入手段を設けたので、気相側への
分配率が高くアンモニア濃度が最低となる低圧側ユニッ
トのドラム内の給水のアンモニア濃度が０．５ｐｐｍ以
上に維持される。この結果、高圧側ユニットを含めてド
ラム内の給水のアンモニア濃度が０．５ｐｐｍ以上にな
り、配管内が適正なアンモニア濃度に維持され、アルカ
リ腐食の問題をなくして配管内のエロージョン・コロー
ジョンを防止することができる排熱回収ボイラ装置とす
ることが可能となる。Further, the exhaust heat recovery boiler device of the present invention comprises a high pressure side unit for generating high pressure side steam and a low pressure side unit for generating low pressure side steam, and recovers heat from a heat source to generate high pressure side steam and low pressure side steam. In a waste heat recovery boiler device including a waste heat recovery boiler for generating steam and a water supply system for supplying water to the waste heat recovery boiler, a chemical injection means for injecting an ammonia-based chemical into the water supply system is provided. Since the chemical injection means for injecting the ammonia-based chemical into the water supply system is provided so that the ammonia concentration of the feed water in the drum of the low-pressure side unit is 0.5 ppm or more, the distribution ratio to the gas phase is high and the ammonia concentration is the lowest. The ammonia concentration of the feed water in the drum of the low pressure side unit is maintained at 0.5 ppm or more. As a result, the ammonia concentration of the feedwater in the drum including the high pressure side unit becomes 0.5 ppm or more, the inside of the pipe is maintained at an appropriate ammonia concentration, and the problem of alkali corrosion is eliminated to prevent erosion and corrosion in the pipe. It is possible to provide an exhaust heat recovery boiler device that can perform the heat recovery.
【００５２】また、本発明の排熱回収ボイラ装置は、高
圧側蒸気を発生させる高圧側ユニット及び低圧側蒸気を
発生させる低圧側ユニットからなり熱源からの熱を回収
して高圧側蒸気及び低圧側蒸気を発生させる排熱回収ボ
イラと、排熱回収ボイラに給水する給水系統と、からな
る排熱回収ボイラ装置において、給水系統にアンモニア
系薬剤を注入する薬剤注入手段を設け、排熱回収ボイラ
の低圧側ユニットのドラム内の給水のｐＨを９．０以上
とすると共に給水のアンモニア濃度を０．５ｐｐｍ以上
にするように給水系統にアンモニア系薬剤を注入する薬
剤注入手段を設けたので、ｐＨが最低となる低圧側ユニ
ットのドラム内の給水のｐＨが９．０以上に維持される
と共に、気相側への分配率が高くアンモニア濃度が最低
となる低圧側ユニットのドラム内の給水のアンモニア濃
度が０．５ｐｐｍ以上に維持される。この結果、高圧側
ユニットを含めてドラム内の給水のｐＨが９．０以上と
なると共に給水のアンモニア濃度が０．５ｐｐｍ以上に
なり、配管内が適正なｐＨ及びアンモニア濃度に維持さ
れ、アルカリ腐食の問題をなくして配管内のエロージョ
ン・コロージョンを防止することができる排熱回収ボイ
ラ装置とすることが可能となる。Further, the exhaust heat recovery boiler of the present invention comprises a high pressure side unit for generating high pressure side steam and a low pressure side unit for generating low pressure side steam, and recovers heat from a heat source to generate high pressure side steam and low pressure side steam. In a waste heat recovery boiler device including a waste heat recovery boiler for generating steam and a water supply system for supplying water to the waste heat recovery boiler, a chemical injection means for injecting an ammonia-based chemical into the water supply system is provided. Since the supply water in the drum of the low-pressure side unit has a pH of 9.0 or more and a chemical injection means for injecting an ammonia-based drug into the water supply system so that the ammonia concentration of the supply water is 0.5 ppm or more, the pH is reduced. The pH of the supply water in the drum of the low pressure side unit, which is the lowest, is maintained at 9.0 or more, and the distribution ratio to the gas phase side is high, and the low pressure side unit which has the lowest ammonia concentration. Ammonia concentration in the feed water in the city of the drum is maintained above 0.5 ppm. As a result, the pH of the feedwater in the drum including the high-pressure side unit becomes 9.0 or more, and the ammonia concentration of the feedwater becomes 0.5 ppm or more. It is possible to provide an exhaust heat recovery boiler device that can eliminate erosion and corrosion in the piping without the problem described above.
【００５３】また、排熱回収ボイラには低圧ドラム及び
中圧ドラム及び高圧ドラムが備えられ、低圧ドラムが低
圧側ユニットのドラムとされ、中圧ドラム及び高圧ドラ
ムが高圧側ユニットのドラムとされ、中圧ドラムに給水
を行う中圧給水ポンプが備えられ、高圧ドラムに給水を
行う高圧給水ポンプが備えられ、低圧ドラム及び中圧ド
ラム及び高圧ドラムに並行に給水が行われるので、少な
いアンモニア系薬剤により適正なｐＨ及びアンモニア濃
度に配管内を維持することができる。The exhaust heat recovery boiler includes a low-pressure drum, a medium-pressure drum, and a high-pressure drum. The low-pressure drum is a drum of the low-pressure unit, and the medium-pressure drum and the high-pressure drum are drums of the high-pressure unit. A medium-pressure water supply pump for supplying water to the medium-pressure drum is provided, a high-pressure water supply pump for supplying water to the high-pressure drum is provided, and water is supplied to the low-pressure drum, the medium-pressure drum, and the high-pressure drum in parallel. Thereby, the inside of the pipe can be maintained at an appropriate pH and ammonia concentration.
【００５４】また、排熱回収ボイラには低圧ドラム及び
中圧ドラム及び高圧ドラムが備えられ、中圧ドラムが低
圧側ユニットのドラムとされ、高圧ドラムが高圧側ユニ
ットのドラムとされ、中圧ドラム及び高圧ドラムに給水
をを行う高・中圧給水ポンプが備えられ、低圧ドラム水
が中圧ドラム及び高圧ドラムの給水とされているので、
低コストの設備で適正なｐＨ及びアンモニア濃度に配管
内を維持することができる。The exhaust heat recovery boiler is provided with a low-pressure drum, a medium-pressure drum, and a high-pressure drum. The medium-pressure drum is a drum of the low-pressure unit, the high-pressure drum is a drum of the high-pressure unit, and the medium-pressure drum. And high- and medium-pressure water supply pumps that supply water to the high-pressure drum are provided, and low-pressure drum water is supplied to the medium-pressure drum and high-pressure drum.
It is possible to maintain the inside of the pipe at an appropriate pH and ammonia concentration with low-cost equipment.
【００５５】また、中圧ドラムの給水に薬剤を注入する
中圧ドラム薬剤注入手段を設け、高圧ドラムの給水に薬
剤を注入する高圧ドラム薬剤注入手段を設けたので、低
コストの設備でしかも少ないアンモニア系薬剤により適
正なｐＨ及びアンモニア濃度に配管内を維持することが
できる。Further, the medium pressure drum medicine injection means for injecting the medicine into the water supply of the medium pressure drum and the high pressure drum medicine injection means for injecting the medicine into the water supply of the high pressure drum are provided. The inside of the pipe can be maintained at an appropriate pH and ammonia concentration by the ammonia-based chemical.
【００５６】本発明の水処理方法は、熱源からの熱によ
ってドラムの給水を蒸発・過熱することで蒸気を発生さ
せる排熱回収ボイラの水処理方法において、ドラム内の
給水のｐＨを９．０以上とするように給水に薬剤を注入
するようにしたので、ドラム内の給水のｐＨが９．０以
上に維持され、配管内が適正なｐＨに維持され、アルカ
リ腐食の問題をなくして配管内のエロージョン・コロー
ジョンを防止することができる。According to the water treatment method of the present invention, in the water treatment method for an exhaust heat recovery boiler that generates steam by evaporating and superheating the feed water of the drum by heat from a heat source, the pH of the feed water in the drum is adjusted to 9.0. As described above, the chemical is injected into the feed water, so that the pH of the feed water in the drum is maintained at 9.0 or more, the inside of the pipe is maintained at an appropriate pH, and the problem of alkali corrosion is eliminated. Erosion and corrosion can be prevented.
【００５７】また、本発明の水処理方法は、熱源からの
熱によってドラムの給水を蒸発・過熱することで蒸気を
発生させる排熱回収ボイラの水処理方法において、ドラ
ム内の給水のアンモニア濃度を０．５ｐｐｍ以上にする
ように給水にアンモニア系薬剤を注入するようにしたの
で、ドラム内の給水のアンモニア濃度が０．５ｐｐｍ以
上に維持され、配管内が適正なアンモニア濃度に維持さ
れ、アルカリ腐食の問題をなくして配管内のエロージョ
ン・コロージョンを防止することができる。Further, the water treatment method of the present invention is a water treatment method for an exhaust heat recovery boiler that generates steam by evaporating and overheating the feed water of the drum by heat from a heat source. Since the ammonia-based chemical was injected into the feed water so as to make it 0.5 ppm or more, the ammonia concentration of the feed water in the drum was maintained at 0.5 ppm or more, the inside of the pipe was maintained at an appropriate ammonia concentration, and alkali corrosion was observed. Erosion and corrosion in the piping can be prevented.
【００５８】また、本発明の水処理方法は、熱源からの
熱によってドラムの給水を蒸発・過熱することで蒸気を
発生させる排熱回収ボイラの水処理方法において、ドラ
ム内の給水のｐＨを９．０以上とすると共に給水のアン
モニア濃度を０．５ｐｐｍ以上にするように給水にアン
モニア系薬剤を注入するようにしたので、ドラム内の給
水のｐＨが９．０以上に維持されると共にアンモニア濃
度が０．５ｐｐｍ以上に維持され、配管内が適正なｐＨ
及びアンモニア濃度に維持され、アルカリ腐食の問題を
なくして配管内のエロージョン・コロージョンを防止す
ることができる。Further, in the water treatment method of the present invention, in the water treatment method of the waste heat recovery boiler in which steam is generated by evaporating and overheating the feed water of the drum by heat from a heat source, the pH of the feed water in the drum is adjusted to 9%. 0.0 or more and the ammonia-based agent is injected into the feed water so that the ammonia concentration of the feed water is 0.5 ppm or more, so that the pH of the feed water in the drum is maintained at 9.0 or more, and the ammonia concentration is adjusted. Is maintained at 0.5 ppm or more,
And the ammonia concentration is maintained, so that erosion and corrosion in the piping can be prevented by eliminating the problem of alkali corrosion.
【図１】本発明の第１実施形態例に係る排熱回収ボイラ
装置を備えたタービン設備の全体系統図。FIG. 1 is an overall system diagram of a turbine facility provided with an exhaust heat recovery boiler device according to a first embodiment of the present invention.
【図２】アンモニアの分配率と圧力との関係を表すグラ
フ。FIG. 2 is a graph showing the relationship between the distribution ratio of ammonia and pressure.
【図３】ボイラ水のｐＨ及びアンモニア濃度を説明する
表図。FIG. 3 is a table illustrating the pH and ammonia concentration of boiler water.
【図４】本発明の第２実施形態例に係る排熱回収ボイラ
装置を備えたタービン設備の全体系統図。FIG. 4 is an overall system diagram of a turbine facility including an exhaust heat recovery boiler device according to a second embodiment of the present invention.
【図５】ボイラ水のｐＨを説明する表図。FIG. 5 is a table illustrating the pH of boiler water.
【図６】本発明の第３実施形態例に係る排熱回収ボイラ
装置を備えたタービン設備の全体系統図。FIG. 6 is an overall system diagram of a turbine facility provided with an exhaust heat recovery boiler device according to a third embodiment of the present invention.
【図７】アンモニア回収手段を備えた復水器の要部構成
図。FIG. 7 is a configuration diagram of a main part of a condenser provided with ammonia recovery means.
１ ガスタービン ２ 排熱回収ボイラ ３ 高圧過熱ユニット ４ 中圧過熱ユニット ５ 低圧過熱ユニット ６ 蒸気タービン ７ 給水ライン ８ 復水器 ９ 給水ポンプ １０ 脱気器 １１ 高圧過熱器 １２ 高圧ドラム １３ 高圧蒸発器 １４ 高圧節炭器 １６ 高圧ドラム薬剤注入手段 １７ 中圧ドラム薬剤注入手段 ２１ 中圧過熱器 ２２ 中圧ドラム ２３ 中圧蒸発器 ２４ 中圧節炭器 ２５ 再熱器 ３１ 低圧過熱器 ３２ 低圧ドラム ３３ 低圧蒸発器 ３４ 低圧節炭器 ４１ 給水ライン ４２ 高圧給水ポンプ ４３ 中圧給水ポンプ ４５ 薬剤注入手段 ４７ 中・高圧給水ポンプ ５１ 真空ポンプ ５２ 冷却器 DESCRIPTION OF SYMBOLS 1 Gas turbine 2 Exhaust heat recovery boiler 3 High pressure superheat unit 4 Medium pressure superheat unit 5 Low pressure superheat unit 6 Steam turbine 7 Water supply line 8 Condenser 9 Feedwater pump 10 Deaerator 11 High pressure superheater 12 High pressure drum 13 High pressure evaporator 14 High-pressure economizer 16 high-pressure drum chemical injection means 17 medium-pressure drum chemical injection means 21 medium-pressure superheater 22 medium-pressure drum 23 medium-pressure evaporator 24 medium-pressure economizer 25 reheater 31 low-pressure superheater 32 low-pressure drum 33 low-pressure Evaporator 34 Low-pressure economizer 41 Water supply line 42 High-pressure water supply pump 43 Medium-pressure water supply pump 45 Chemical injection means 47 Medium- and high-pressure water supply pump 51 Vacuum pump 52 Cooler
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｆ０１Ｋ 23/10 Ｆ０１Ｋ 23/10 Ｆ Ｆ２２Ｂ 37/56 Ｆ２２Ｂ 37/56 Ｚ Ｆ２２Ｄ 11/00 Ｆ２２Ｄ 11/00 Ｇ (72)発明者 長尾 雅詞 長崎県長崎市飽の浦町１番１号 三菱重工 業株式会社長崎造船所内 (72)発明者 栄田 正 長崎県長崎市飽の浦町１番１号 三菱重工 業株式会社長崎造船所内 Ｆターム(参考） 3G081 BA02 BB07 BC07 BD00 DA03──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat ゛ (Reference) F01K 23/10 F01K 23/10 F F22B 37/56 F22B 37/56 Z F22D 11/00 F22D 11/00 G (72) Inventor Masanobu Nagao 1-1, Akunoura-cho, Nagasaki City, Nagasaki Prefecture Mitsubishi Heavy Industries, Ltd.Nagasaki Shipbuilding Co., Ltd. F-term (reference) 3G081 BA02 BB07 BC07 BD00 DA03
Claims (14)
排熱回収ボイラと、排熱回収ボイラの蒸気により作動す
る蒸気タービンと、蒸気タービンの排気を復水する復水
器と、復水器で凝縮された復水を排熱回収ボイラ側に送
給する給水系統とからなるタービン設備において、排熱
回収ボイラのドラム内の給水のｐＨを９．０以上とする
ように給水系統に薬剤を注入する薬剤注入手段を設けた
ことを特徴とするタービン設備。An exhaust heat recovery boiler that generates steam by heat from a heat source, a steam turbine that is operated by the steam of the exhaust heat recovery boiler, a condenser that condenses exhaust of the steam turbine, and a condenser In a turbine facility consisting of a water supply system for feeding condensed condensate water to the waste heat recovery boiler, chemicals are injected into the water supply system so that the pH of the water supply in the drum of the waste heat recovery boiler is 9.0 or higher. Turbine equipment provided with a chemical injecting means for performing the following.
排熱回収ボイラと、排熱回収ボイラの蒸気により作動す
る蒸気タービンと、蒸気タービンの排気を復水する復水
器と、復水器で凝縮された復水を排熱回収ボイラ側に送
給する給水系統とからなるタービン設備において、給水
系統にアンモニア系薬剤を注入する薬剤注入手段を設
け、排熱回収ボイラのドラム内の給水のアンモニア濃度
を０．５ｐｐｍ以上にするように給水系統にアンモニア
系薬剤を注入する薬剤注入手段を設けたことを特徴とす
るタービン設備。2. An exhaust heat recovery boiler for generating steam by heat from a heat source, a steam turbine operated by the steam of the exhaust heat recovery boiler, a condenser for condensing exhaust of the steam turbine, and a condenser. In a turbine facility comprising a water supply system for feeding condensed condensate water to the waste heat recovery boiler, a chemical injection means for injecting an ammonia-based chemical into the water supply system is provided, and the ammonia of the water supply in the drum of the waste heat recovery boiler is provided. A turbine facility comprising a chemical injection means for injecting an ammonia-based chemical into a water supply system so that the concentration is 0.5 ppm or more.
排熱回収ボイラと、排熱回収ボイラの蒸気により作動す
る蒸気タービンと、蒸気タービンの排気を復水する復水
器と、復水器で凝縮された復水を排熱回収ボイラ側に送
給する給水系統とからなるタービン設備において、給水
系統にアンモニア系薬剤を注入する薬剤注入手段を設
け、排熱回収ボイラのドラム内の給水のｐＨを９．０以
上とすると共に給水のアンモニア濃度を０．５ｐｐｍ以
上にするように給水系統にアンモニア系薬剤を注入する
薬剤注入手段を設けたことを特徴とするタービン設備。3. An exhaust heat recovery boiler that generates steam by heat from a heat source, a steam turbine that is operated by the steam of the exhaust heat recovery boiler, a condenser that condenses the exhaust of the steam turbine, and a condenser. In a turbine facility comprising a water supply system for feeding condensed condensed water to the exhaust heat recovery boiler side, a chemical injection means for injecting an ammonia-based chemical into the water supply system is provided, and the pH of the water supply in the drum of the exhaust heat recovery boiler is provided. And a chemical injection means for injecting an ammonia-based chemical into a water supply system such that the ammonia concentration is adjusted to 9.0 or more and the ammonia concentration of the feed water is adjusted to 0.5 ppm or more.
水器で凝縮された復水からアンモニアを回収するアンモ
ニア回収手段を備えたことを特徴とするタービン設備。4. The turbine equipment according to claim 2, further comprising ammonia recovery means for recovering ammonia from the condensate condensed in the condenser.
おいて、熱源からの熱はガスタービンの排気であるコン
バインドプラントであることを特徴とするタービン設
備。5. The turbine facility according to claim 1, wherein the heat from the heat source is a combined plant in which the heat from the heat source is the exhaust gas of a gas turbine.
及び低圧側蒸気を発生させる低圧側ユニットからなり熱
源からの熱を回収して高圧側蒸気及び低圧側蒸気を発生
させる排熱回収ボイラと、排熱回収ボイラに給水する給
水系統と、からなる排熱回収ボイラ装置において、排熱
回収ボイラの低圧側ユニットのドラム内の給水のｐＨを
９．０以上とするように給水系統に薬剤を注入する薬剤
注入手段を設けたことを特徴とする排熱回収ボイラ装
置。6. An exhaust heat recovery boiler comprising a high pressure side unit for generating high pressure side steam and a low pressure side unit for generating low pressure side steam, recovering heat from a heat source to generate high pressure side steam and low pressure side steam, In a waste heat recovery boiler device comprising a water supply system for supplying water to the waste heat recovery boiler, a chemical is injected into the water supply system such that the pH of the supply water in the drum of the low pressure side unit of the waste heat recovery boiler is 9.0 or more. An exhaust heat recovery boiler device provided with a chemical injection means.
及び低圧側蒸気を発生させる低圧側ユニットからなり熱
源からの熱を回収して高圧側蒸気及び低圧側蒸気を発生
させる排熱回収ボイラと、排熱回収ボイラに給水する給
水系統と、からなる排熱回収ボイラ装置において、給水
系統にアンモニア系薬剤を注入する薬剤注入手段を設
け、排熱回収ボイラの低圧側ユニットのドラム内の給水
のアンモニア濃度を０．５ｐｐｍ以上にするように給水
系統にアンモニア系薬剤を注入する薬剤注入手段を設け
たことを特徴とする排熱回収ボイラ装置。7. An exhaust heat recovery boiler comprising a high pressure side unit for generating high pressure side steam and a low pressure side unit for generating low pressure side steam, recovering heat from a heat source to generate high pressure side steam and low pressure side steam, In a waste heat recovery boiler device comprising a water supply system for supplying water to the waste heat recovery boiler, a chemical injection means for injecting an ammonia-based chemical into the water supply system is provided, and ammonia supplied to the drum of the low pressure side unit of the waste heat recovery boiler is provided. An exhaust heat recovery boiler device comprising a chemical injection means for injecting an ammonia-based chemical into a water supply system so that the concentration is 0.5 ppm or more.
及び低圧側蒸気を発生させる低圧側ユニットからなり熱
源からの熱を回収して高圧側蒸気及び低圧側蒸気を発生
させる排熱回収ボイラと、排熱回収ボイラに給水する給
水系統と、からなる排熱回収ボイラ装置において、給水
系統にアンモニア系薬剤を注入する薬剤注入手段を設
け、排熱回収ボイラの低圧側ユニットのドラム内の給水
のｐＨを９．０以上とすると共に給水のアンモニア濃度
を０．５ｐｐｍ以上にするように給水系統にアンモニア
系薬剤を注入する薬剤注入手段を設けたことを特徴とす
る排熱回収ボイラ装置。8. An exhaust heat recovery boiler comprising a high pressure side unit for generating high pressure side steam and a low pressure side unit for generating low pressure side steam, recovering heat from a heat source to generate high pressure side steam and low pressure side steam, In a waste heat recovery boiler apparatus comprising a water supply system for supplying water to an exhaust heat recovery boiler, a chemical injection means for injecting an ammonia-based chemical into the water supply system is provided, and a pH of water supply in a drum of a low pressure side unit of the exhaust heat recovery boiler is provided. The waste heat recovery boiler device is provided with a chemical injection means for injecting an ammonia-based chemical into the water supply system so that the ammonia concentration is adjusted to 9.0 or more and the ammonia concentration of the feed water is adjusted to 0.5 ppm or more.
おいて、排熱回収ボイラには低圧ドラム及び中圧ドラム
及び高圧ドラムが備えられ、低圧ドラムが低圧側ユニッ
トのドラムとされ、中圧ドラム及び高圧ドラムが高圧側
ユニットのドラムとされ、中圧ドラムに給水を行う中圧
給水ポンプが備えられ、高圧ドラムに給水を行う高圧給
水ポンプが備えられ、低圧ドラム及び中圧ドラム及び高
圧ドラムに並行に給水が行われることを特徴とする排熱
回収ボイラ装置。9. The exhaust heat recovery boiler according to claim 6, further comprising a low pressure drum, a medium pressure drum, and a high pressure drum, wherein the low pressure drum is a drum of a low pressure side unit. The pressure drum and the high pressure drum are drums of the high pressure side unit, a medium pressure water supply pump for supplying water to the medium pressure drum is provided, and a high pressure water supply pump for supplying water to the high pressure drum is provided. An exhaust heat recovery boiler, wherein water is supplied in parallel to a drum.
において、排熱回収ボイラには低圧ドラム及び中圧ドラ
ム及び高圧ドラムが備えられ、中圧ドラムが低圧側ユニ
ットのドラムとされ、高圧ドラムが高圧側ユニットのド
ラムとされ、中圧ドラム及び高圧ドラムに給水を行う高
・中圧給水ポンプが備えられ、低圧ドラム水が中圧ドラ
ム及び高圧ドラムの給水とされていることを特徴とする
排熱回収ボイラ装置。10. The exhaust heat recovery boiler according to any one of claims 6 to 8, further comprising a low-pressure drum, a medium-pressure drum, and a high-pressure drum, wherein the medium-pressure drum is a drum of a low-pressure unit. The high-pressure drum is a drum of the high-pressure side unit, and a high- and medium-pressure water supply pump for supplying water to the medium-pressure drum and the high-pressure drum is provided, and the low-pressure drum water is supplied to the medium-pressure drum and the high-pressure drum. Waste heat recovery boiler device.
水に薬剤を注入する中圧ドラム薬剤注入手段を設け、高
圧ドラムの給水に薬剤を注入する高圧ドラム薬剤注入手
段を設けたことを特徴とする排熱回収ボイラ装置。11. The medium-pressure drum according to claim 10, further comprising a medium-pressure drum medicine injection means for injecting a medicine into the medium-pressure drum water supply, and a high-pressure drum medicine injection means for injecting a medicine into the high-pressure drum water supply. Waste heat recovery boiler equipment.
蒸発・過熱することで蒸気を発生させる排熱回収ボイラ
の水処理方法において、ドラム内の給水のｐＨを９．０
以上とするように給水に薬剤を注入することを特徴とす
る水処理方法。12. In a water treatment method for an exhaust heat recovery boiler that generates steam by evaporating and overheating feedwater of a drum by heat from a heat source, the pH of the feedwater in the drum is adjusted to 9.0.
A water treatment method characterized by injecting a chemical into water as described above.
蒸発・過熱することで蒸気を発生させる排熱回収ボイラ
の水処理方法において、ドラム内の給水のアンモニア濃
度を０．５ｐｐｍ以上にするように給水にアンモニア系
薬剤を注入することを特徴とする水処理方法。13. A water treatment method for an exhaust heat recovery boiler that generates steam by evaporating and superheating water supplied to a drum by heat from a heat source, wherein the ammonia concentration of the water supplied to the drum is set to 0.5 ppm or more. A water treatment method comprising injecting an ammonia-based chemical into water supply.
蒸発・過熱することで蒸気を発生させる排熱回収ボイラ
の水処理方法において、ドラム内の給水のｐＨを９．０
以上とすると共に給水のアンモニア濃度を０．５ｐｐｍ
以上にするように給水にアンモニア系薬剤を注入するこ
とを特徴とする水処理方法。14. In a water treatment method for an exhaust heat recovery boiler that generates steam by evaporating and overheating the feedwater of a drum by heat from a heat source, the pH of the feedwater in the drum is adjusted to 9.0.
And the ammonia concentration of the feed water is 0.5 ppm
A water treatment method characterized by injecting an ammonia-based chemical into feed water as described above.
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2000
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