JP6338323B2 - 脱硝装置 - Google Patents
脱硝装置 Download PDFInfo
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- JP6338323B2 JP6338323B2 JP2013116352A JP2013116352A JP6338323B2 JP 6338323 B2 JP6338323 B2 JP 6338323B2 JP 2013116352 A JP2013116352 A JP 2013116352A JP 2013116352 A JP2013116352 A JP 2013116352A JP 6338323 B2 JP6338323 B2 JP 6338323B2
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/003—Arrangements of devices for treating smoke or fumes for supplying chemicals to fumes, e.g. using injection devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/90—Injecting reactants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/9404—Removing only nitrogen compounds
- B01D53/9409—Nitrogen oxides
- B01D53/9431—Processes characterised by a specific device
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/04—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material using washing fluids
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/20—Reductants
- B01D2251/206—Ammonium compounds
- B01D2251/2062—Ammonia
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/12—Methods and means for introducing reactants
- B01D2259/124—Liquid reactants
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2215/00—Preventing emissions
- F23J2215/10—Nitrogen; Compounds thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2219/00—Treatment devices
- F23J2219/10—Catalytic reduction devices
Description
4NO+4NH3+O2→4N2+6H2O ・・・・・(1)
本発明が解決しようとする課題は、還元剤を含む還元液を排ガスダクト内に設置したノズルから噴霧するシステムにおいて、還元液が排ガスの熱を受けてノズルに至る間で気化することを抑止して、所定量の還元液を排ガス内に安定に噴霧することができ、結果として脱硝性能の低下を抑制した脱硝装置を提供することにある。
2 ノズル
3 ランス
4 アンモニア流量計
5 注入水開閉弁
6 注入水配管
7 排ガス温度計
8 注入水制御弁
9 アンモニア水制御弁
10 アンモニア水供給ライン
11 空気供給ライン
12 脱硝触媒
Claims (4)
- 燃焼設備から排出される排ガス中の窒素酸化物を還元する還元剤を含む還元液を、気体の気流により前記排ガスに噴霧するノズルと、
前記ノズルに前記気体を供給する気体供給部と、
前記ノズルに前記還元液を供給する還元液供給部と、
前記還元液に希釈液を注入して前記還元液の濃度を調整する濃度調整部とを備え、
前記濃度調整部は、前記燃焼設備の負荷に関わらず、前記燃焼設備の負荷変動範囲の下限において前記還元液が前記還元液供給部で気化しない濃度に対応して定めた設定希釈液量の前記希釈液を注入することを特徴とする脱硝装置。 - 前記ノズルは、二流体ノズルであることを特徴とする請求項1に記載の脱硝装置。
- 前記設定希釈液量は、前記燃焼設備の定格負荷に対応して定められる前記還元液の供給量と略同一重量の希釈液量であることを特徴とする請求項1又は2に記載の脱硝装置。
- 前記還元液供給部は、前記燃焼設備の負荷に応じて変化する前記還元液の供給量を計測する流量計を備え、
前記濃度調整部は、前記流量計で計測された前記還元液の供給量の増分を、前記設定希釈液量から相殺して前記希釈液の注入量を減少させ、
前記気体供給部は、前記燃焼設備の負荷に関わらず、前記ノズルに供給する気体流量を一定の設定気体流量とし、
前記設定気体流量は、該設定気体流量を前記濃度調整部で希釈された還元液量で除した気液比が、前記燃焼設備の負荷変動範囲において略一定になるように設定されることを特徴とする請求項1乃至3の何れか1つに記載の脱硝装置。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013116352A JP6338323B2 (ja) | 2013-05-31 | 2013-05-31 | 脱硝装置 |
US14/289,697 US9664383B2 (en) | 2013-05-31 | 2014-05-29 | Denitrification apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013116352A JP6338323B2 (ja) | 2013-05-31 | 2013-05-31 | 脱硝装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2014233671A JP2014233671A (ja) | 2014-12-15 |
JP6338323B2 true JP6338323B2 (ja) | 2018-06-06 |
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Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2013116352A Active JP6338323B2 (ja) | 2013-05-31 | 2013-05-31 | 脱硝装置 |
Country Status (2)
Country | Link |
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US (1) | US9664383B2 (ja) |
JP (1) | JP6338323B2 (ja) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20180058698A1 (en) * | 2016-08-23 | 2018-03-01 | General Electric Technology Gmbh | Tempered Ammonia Injection For Gas Turbine Selective Catalyst Reduction System |
KR101815949B1 (ko) | 2016-11-07 | 2018-01-11 | 주식회사 홍일화학 | NOx 가스 제거장치 |
DE102017001025B4 (de) | 2017-02-03 | 2020-10-08 | Rs Rittel Gmbh | Verbrennungsanlage und Verfahren zur Abgasbehandlung |
CN107497272A (zh) * | 2017-09-01 | 2017-12-22 | 佛山市南海绿电再生能源有限公司 | 一种烟气脱硝系统 |
CN112717689B (zh) * | 2019-10-28 | 2022-07-08 | 国家电投集团远达环保工程有限公司重庆科技分公司 | 选择性催化还原脱硝设备和方法 |
WO2023053218A1 (ja) * | 2021-09-28 | 2023-04-06 | 三菱重工業株式会社 | 脱硝装置 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JP3513163B2 (ja) * | 1992-03-27 | 2004-03-31 | 東京瓦斯株式会社 | 窒素酸化物除去方法およびその装置 |
WO2001012299A1 (fr) | 1999-08-12 | 2001-02-22 | Ebara Corporation | Procede et appareil de traitement des gaz d'echappement |
KR101074050B1 (ko) * | 2010-01-20 | 2011-10-17 | 한국전력기술 주식회사 | 요소수유입로와 분사노즐의 막힘을 방지할 수 있는 배기가스 탈질시스템과 요소수 응고를 방지할 수 있는 요소수 공급장치 |
JP5337077B2 (ja) * | 2010-02-26 | 2013-11-06 | 三菱重工業株式会社 | 脱硝装置の制御装置、これを備えた脱硝装置、およびこれを備えたボイラプラント、ならびに脱硝装置の制御方法 |
JP5839791B2 (ja) * | 2010-10-14 | 2016-01-06 | 三菱重工業株式会社 | 舶用scr還元剤供給システム |
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2013
- 2013-05-31 JP JP2013116352A patent/JP6338323B2/ja active Active
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2014
- 2014-05-29 US US14/289,697 patent/US9664383B2/en active Active
Also Published As
Publication number | Publication date |
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US9664383B2 (en) | 2017-05-30 |
JP2014233671A (ja) | 2014-12-15 |
US20140356236A1 (en) | 2014-12-04 |
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