JP5508600B2 - 還元剤供給装置及びこれを用いた排気ガス脱窒システム - Google Patents
還元剤供給装置及びこれを用いた排気ガス脱窒システム Download PDFInfo
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- JP5508600B2 JP5508600B2 JP2013515273A JP2013515273A JP5508600B2 JP 5508600 B2 JP5508600 B2 JP 5508600B2 JP 2013515273 A JP2013515273 A JP 2013515273A JP 2013515273 A JP2013515273 A JP 2013515273A JP 5508600 B2 JP5508600 B2 JP 5508600B2
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- 239000003638 chemical reducing agent Substances 0.000 title claims description 281
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 119
- 238000002347 injection Methods 0.000 claims description 91
- 239000007924 injection Substances 0.000 claims description 91
- 238000006243 chemical reaction Methods 0.000 claims description 38
- 238000007711 solidification Methods 0.000 claims description 7
- 230000008023 solidification Effects 0.000 claims description 7
- 239000003570 air Substances 0.000 description 116
- 239000007789 gas Substances 0.000 description 56
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 51
- WTHDKMILWLGDKL-UHFFFAOYSA-N urea;hydrate Chemical compound O.NC(N)=O WTHDKMILWLGDKL-UHFFFAOYSA-N 0.000 description 20
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 18
- 238000010586 diagram Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 10
- 229910021529 ammonia Inorganic materials 0.000 description 9
- 239000003054 catalyst Substances 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 238000004140 cleaning Methods 0.000 description 7
- 230000000903 blocking effect Effects 0.000 description 6
- 230000002265 prevention Effects 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000012071 phase Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 2
- 239000004202 carbamide Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Chemical compound O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000008400 supply water Substances 0.000 description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- ZNOKGRXACCSDPY-UHFFFAOYSA-N tungsten trioxide Chemical compound O=[W](=O)=O ZNOKGRXACCSDPY-UHFFFAOYSA-N 0.000 description 2
- 229910052720 vanadium Inorganic materials 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 239000010742 number 1 fuel oil Substances 0.000 description 1
- 239000000088 plastic resin Substances 0.000 description 1
- 229910001404 rare earth metal oxide Inorganic materials 0.000 description 1
- 208000023504 respiratory system disease Diseases 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
Classifications
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
-
- 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
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen oxides
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
- F01N2610/1466—Means for venting air out of conduits or tanks
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
- F01N2610/1493—Purging the reducing agent out of the conduits or nozzle
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Treating Waste Gases (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Exhaust Gas After Treatment (AREA)
Description
zone)が発生する。前記流れずに留まっている尿素水は固形化し、尿素水を継続的に噴射部に供給する過程で固形化が一層進み、尿素水移動路123は固形化した尿素によって塞がることに問題点があった。
前記反応器24は、内部に触媒を含んでおり、アンモニアと排気ガスの混合気体中の窒素酸化物(NOx)を無害な成分に脱窒させるもので、(株)SK社製のSCR製品などが使用可能である。すなわち、流入するアンモニアと排気ガスの混合気体中の窒素酸化物(NOx)は触媒の作用によって下記の化学反応式のような反応によって無害な成分に変換され、排出部26を通じて外部に排出される。
2NO2+4NH3+O2→3N2+6H2O
この際、前記触媒としては多様な製品が使用できる。V、Mo、W、Cu、Ni、Fe、Cr、Mn、Snなどの酸化物、硫酸塩、希土類酸化物、貴金属などを触媒活性種とし、Al203、Ti02、活性炭、ゼオライト、シリカなどを触媒担体とする製品が使用できる。これらの中で現在実用化されているものはTi02(titanium oxide)を担体とするV205(vanadium
pentoxide)、Mo03(molybdenum trioxide)、W03(tungsten trioxide)系の触媒である。Al203を担体とする触媒は、石炭及び重油燃料の排気ガスのようにSOxが存在する排気ガス中では硫酸塩化して比表面積の低下によって劣化が発生するため、SOxのない排気ガスにだけ適用することができる。
22 還元剤供給装置
23 反応チャンバー
24 反応器
25 制御部
26 排出部
211 出力センサー
221 空気供給部
222 還元剤供給部
223 給水部
224,224’,224” 選択供給部
225 噴射部
261 分析器
2211 空気加圧部
2221 還元剤貯蔵タンク
2222 還元剤供給ポンプ
2231 貯水タンク
2232 給水ポンプ
2241 空気量制御バルブ
2242,2242’ 空気移動路
2243,2243’ 流量制御バルブ
2244,2244’ 還元剤移動路
2245,2245’ 流量制御ポンプ
2246’ 空気迂回路
2247’ 空気制御バルブ
2248’ 逆流防止バルブ
2241” 空気調節バルブ
2242” 空気移動路
2243” 空気迂回管路
2244” 水調節バルブ
2245” 水移動路
2246” 還元剤調節バルブ
2247” 還元剤移動路
Claims (3)
- 還元剤を選択供給部に供給する還元剤供給部と、水を前記選択供給部に供給する給水部と、前記還元剤供給部と前記給水部から供給された前記還元剤及び前記水のいずれか一つを選択的に噴射部に供給する前記選択供給部と、前記選択供給部から供給された前記還元剤または前記水を噴射する前記噴射部と、空気を前記選択供給部に供給する空気供給部とを含み、
前記選択供給部は、入力端が前記空気供給部に連結され、前記空気が空気移動路または空気迂回管路に供給されるように制御する空気調節バルブと、一端が前記空気調節バルブの一出力端に連結され、他端が前記噴射部に連結される前記空気移動路と、一端が前記空気調節バルブの他出力端に連結され、他端が水調節バルブの一入力端に連結される前記空気迂回管路と、両入力端のそれぞれが前記給水部と前記空気迂回管路の他端に連結され、水移動路に前記空気または前記水を選択的に供給するように制御する前記水調節バルブと、一端が前記水調節バルブの出力端に連結され、他端が還元剤調節バルブの一入力端に連結される前記水移動路と、両入力端のそれぞれは前記還元剤供給部と前記水移動路の他端に連結され、還元剤移動路への前記空気、前記水及び前記還元剤の供給を制御する還元剤調節バルブと、一端が前記還元剤調節バルブの出力端に連結され、他端が前記噴射部に連結される前記還元剤移動路とを含み、且つ、
前記選択供給部は、前記噴射部が前記還元剤を継続的に噴射する過程で、あるいは装置の一時的な故障によって残留する前記還元剤の固形化によって塞がる前記噴射部に前記水を供給して前記噴射部の塞がりを防止することができることを特徴とする、
還元剤供給装置。 - 前記還元剤移動路は、
2m以内の長さを持つことを特徴とする、
請求項1に記載の還元剤供給装置。 - 反応チャンバー内に前記還元剤を供給する前記還元剤供給装置と、流入した排気ガスと前記還元剤供給装置から供給された前記還元剤を混合して混合気体を形成して反応器に供給する前記反応チャンバーと、前記反応チャンバーから供給された混合気体を脱窒させる前記反応器とを含み、
前記還元剤供給装置は、請求項1又は請求項2に記載の還元剤供給装置であることを特徴とする、
排気ガス脱窒システム。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2010-0058708 | 2010-06-21 | ||
KR1020100058708A KR101238777B1 (ko) | 2010-06-21 | 2010-06-21 | 환원제 공급장치 및 이를 이용한 배기가스 탈질시스템 |
PCT/KR2011/004480 WO2011162513A2 (ko) | 2010-06-21 | 2011-06-20 | 환원제 공급장치 및 이를 이용한 배기가스 탈질시스템 |
Publications (2)
Publication Number | Publication Date |
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JP2013528749A JP2013528749A (ja) | 2013-07-11 |
JP5508600B2 true JP5508600B2 (ja) | 2014-06-04 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2013515273A Active JP5508600B2 (ja) | 2010-06-21 | 2011-06-20 | 還元剤供給装置及びこれを用いた排気ガス脱窒システム |
Country Status (6)
Country | Link |
---|---|
US (1) | US9211501B2 (ja) |
EP (1) | EP2583740B1 (ja) |
JP (1) | JP5508600B2 (ja) |
KR (1) | KR101238777B1 (ja) |
CN (1) | CN102946975B (ja) |
WO (1) | WO2011162513A2 (ja) |
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JP4560447B2 (ja) | 2005-06-24 | 2010-10-13 | 株式会社サムソン | 尿素水噴射ノズルの詰まりを防止する脱硝装置 |
JP4673146B2 (ja) * | 2005-06-24 | 2011-04-20 | 株式会社サムソン | 尿素水噴射ノズルの詰まりを防止する脱硝装置 |
CN101530733B (zh) * | 2008-03-14 | 2011-11-16 | 同方环境股份有限公司 | 一种利用尿素溶液法的烟气脱硝装置 |
JP2009264191A (ja) * | 2008-04-23 | 2009-11-12 | Samson Co Ltd | 脱硝装置 |
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 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JP6235760B1 (ja) * | 2017-01-16 | 2017-11-22 | 新潟原動機株式会社 | 還元剤噴射装置、船舶及び還元剤噴射装置の運転方法 |
WO2018131154A1 (ja) * | 2017-01-16 | 2018-07-19 | 新潟原動機株式会社 | 還元剤噴射装置、船舶及び還元剤噴射装置の運転方法 |
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JP2013528749A (ja) | 2013-07-11 |
EP2583740A4 (en) | 2014-01-15 |
CN102946975B (zh) | 2015-01-21 |
KR101238777B1 (ko) | 2013-03-04 |
US9211501B2 (en) | 2015-12-15 |
WO2011162513A3 (ko) | 2012-05-18 |
EP2583740B1 (en) | 2018-12-26 |
CN102946975A (zh) | 2013-02-27 |
EP2583740A2 (en) | 2013-04-24 |
US20130101472A1 (en) | 2013-04-25 |
WO2011162513A2 (ko) | 2011-12-29 |
KR20110138680A (ko) | 2011-12-28 |
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