JP4959231B2 - 脱硝装置および脱硝方法 - Google Patents
脱硝装置および脱硝方法 Download PDFInfo
- Publication number
- JP4959231B2 JP4959231B2 JP2006162141A JP2006162141A JP4959231B2 JP 4959231 B2 JP4959231 B2 JP 4959231B2 JP 2006162141 A JP2006162141 A JP 2006162141A JP 2006162141 A JP2006162141 A JP 2006162141A JP 4959231 B2 JP4959231 B2 JP 4959231B2
- Authority
- JP
- Japan
- Prior art keywords
- reducing agent
- exhaust gas
- flow rate
- denitration
- dilution water
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 title claims description 13
- 239000003638 chemical reducing agent Substances 0.000 claims description 122
- 239000007789 gas Substances 0.000 claims description 69
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 51
- 238000002347 injection Methods 0.000 claims description 44
- 239000007924 injection Substances 0.000 claims description 44
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims description 39
- 239000012895 dilution Substances 0.000 claims description 39
- 238000010790 dilution Methods 0.000 claims description 39
- 239000003054 catalyst Substances 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 9
- WTHDKMILWLGDKL-UHFFFAOYSA-N urea;hydrate Chemical compound O.NC(N)=O WTHDKMILWLGDKL-UHFFFAOYSA-N 0.000 description 13
- 238000002485 combustion reaction Methods 0.000 description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 238000010248 power generation Methods 0.000 description 8
- 239000007788 liquid Substances 0.000 description 5
- 238000005507 spraying Methods 0.000 description 5
- 238000007865 diluting Methods 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 230000006870 function Effects 0.000 description 3
- 239000002912 waste gas Substances 0.000 description 3
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 2
- 235000011114 ammonium hydroxide Nutrition 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
Landscapes
- Exhaust Gas After Treatment (AREA)
- Treating Waste Gases (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Control Of Eletrric Generators (AREA)
Description
本実施形態の脱硝装置および脱硝方法は、排ガスから窒素酸化物(以下、NOxという)を除去するのに使用される。特に、本実施形態の脱硝装置および脱硝方法は、燃焼機器を有する発電機と、前記燃焼機器から排出される排ガスの排熱を回収する排ガスボイラとを備えるコジェネレーションシステムに好適に適用される。
図1は、本発明の脱硝装置の一実施例を示す概略構造図である。
2 還元剤注入器
3 脱硝反応器
4 希釈水供給手段
9 第一排ガス通路
11 注入ノズル
12 還元剤流路
15 希釈水流路
18 制御器
Claims (3)
- 排ガスに窒素酸化物の還元剤を注入する還元剤注入器と、
この還元剤注入器により還元剤が注入された排ガスが通され、その排ガス中の窒素酸化物の還元を図る脱硝触媒を有する脱硝反応器と、
前記還元剤注入器による注入流量を所定以上とするよう前記還元剤へ希釈水を供給する希釈水供給手段と
を備えることを特徴とする脱硝装置。 - 排ガスに窒素酸化物の還元剤を注入する還元剤注入器と、
この還元剤注入器により還元剤が注入された排ガスが通され、その排ガス中の窒素酸化物の還元を図る脱硝触媒を有する脱硝反応器と、
前記還元剤注入器の噴出部への還元剤に希釈水を混入可能な希釈水供給手段と、
前記還元剤注入器による還元剤の注入流量が所定未満の場合、還元剤注入器による流入流量を所定以上とするよう前記希釈水供給手段による希釈水の混入量を制御する制御手段と
を備えることを特徴とする脱硝装置。 - 排ガス中に還元剤を注入しつつ、脱硝触媒にて排ガス中の窒素酸化物を還元する方法であって、
前記還元剤の注入量が所定未満となる場合、還元剤注入器による流入流量を所定以上とするよう希釈水を混ぜ合わせて注入する
ことを特徴とする脱硝方法。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006162141A JP4959231B2 (ja) | 2006-06-12 | 2006-06-12 | 脱硝装置および脱硝方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006162141A JP4959231B2 (ja) | 2006-06-12 | 2006-06-12 | 脱硝装置および脱硝方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2007330837A JP2007330837A (ja) | 2007-12-27 |
JP4959231B2 true JP4959231B2 (ja) | 2012-06-20 |
Family
ID=38930821
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006162141A Active JP4959231B2 (ja) | 2006-06-12 | 2006-06-12 | 脱硝装置および脱硝方法 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP4959231B2 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5609175B2 (ja) * | 2010-03-12 | 2014-10-22 | いすゞ自動車株式会社 | 排気ガス浄化方法及びその装置 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04122416A (ja) * | 1990-09-11 | 1992-04-22 | Babcock Hitachi Kk | 脱硝装置へのアンモニア供給方法およびその装置 |
JP2003265923A (ja) * | 2002-03-14 | 2003-09-24 | Mitsui & Co Ltd | 排煙脱硝用の還元剤組成物の汎用型供給装置 |
DE10360891A1 (de) * | 2003-12-19 | 2005-07-21 | Robert Bosch Gmbh | Verfahren zum Betreiben eines Dosierventils und Vorrichtung zur Durchführung des Verfahrens |
JP4748664B2 (ja) * | 2005-12-09 | 2011-08-17 | 三菱ふそうトラック・バス株式会社 | 排気浄化装置 |
-
2006
- 2006-06-12 JP JP2006162141A patent/JP4959231B2/ja active Active
Also Published As
Publication number | Publication date |
---|---|
JP2007330837A (ja) | 2007-12-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR102182935B1 (ko) | 저압 scr 시스템 | |
CA2617747C (en) | Methods and systems for reducing nox emissions in industrial combustion systems | |
KR101807996B1 (ko) | 황연 및 질소산화물 저감을 위하여 이종 환원제를 사용하는 복합 탈질설비 | |
KR102586253B1 (ko) | 농도 정밀제어 가능한 다공성 구조체 삽입형 희석 요소수 분무장치 | |
JP4646934B2 (ja) | エンジンの排気処理装置及びこれを用いたエンジンの排気処理方法 | |
KR101519173B1 (ko) | 촉매 분해반응을 이용한 우레아 용액 공급장치 | |
CN101994553B (zh) | 尿素喷射控制方法 | |
KR101312994B1 (ko) | 저온 운전 조건에서 효율적인 황연 및 질소산화물 저감을 위한 선택적 촉매환원 탈질설비 | |
JP2007198316A (ja) | 内燃機関の排気浄化装置及び排気浄化方法 | |
JP2010144632A (ja) | 排気浄化装置 | |
JPH0716431A (ja) | 排煙脱硝装置 | |
JP4959231B2 (ja) | 脱硝装置および脱硝方法 | |
KR101735535B1 (ko) | 선박용 질소 산화물 제거 장치 | |
JPH08281074A (ja) | 尿素を用いた脱硝装置 | |
KR100551881B1 (ko) | 질소산화물의 선택적비촉매환원반응에 이용되는 첨가제,이를 이용한 덕트내 분사형 선택적비촉매환원 공정 및 그시스템 | |
JP4381881B2 (ja) | 排煙脱硝装置とその起動方法 | |
US9084968B2 (en) | After treatment device of engine | |
JP2005214172A (ja) | エンジンの排気浄化装置 | |
KR20090084055A (ko) | 선택적 촉매 환원 공정과 선택적 무촉매 환원 공정의 혼화시스템에서 암모니아 생성량을 증가시키는 환원제 분사시스템 | |
KR20180130919A (ko) | 선택적 촉매 환원 시스템 | |
KR20170099110A (ko) | Lp scr 시스템 및 그 제어 방법 | |
KR102292884B1 (ko) | 엔진용 scr 시스템 | |
KR102490746B1 (ko) | 능동형 배기가스 처리 시스템 | |
KR20160104367A (ko) | 선택적 촉매 환원 시스템을 포함한 동력 장치 | |
US10683787B2 (en) | Automotive exhaust aftertreatment system having onboard ammonia reactor with hybrid heating |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20081218 |
|
A711 | Notification of change in applicant |
Free format text: JAPANESE INTERMEDIATE CODE: A712 Effective date: 20081222 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20120221 |
|
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20120321 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20150330 Year of fee payment: 3 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 4959231 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |