ATE185284T1 - Kombiniertes sncr und scr verfahren zur reduzierung der stickstoffoxyde - Google Patents
Kombiniertes sncr und scr verfahren zur reduzierung der stickstoffoxydeInfo
- Publication number
- ATE185284T1 ATE185284T1 AT90912704T AT90912704T ATE185284T1 AT E185284 T1 ATE185284 T1 AT E185284T1 AT 90912704 T AT90912704 T AT 90912704T AT 90912704 T AT90912704 T AT 90912704T AT E185284 T1 ATE185284 T1 AT E185284T1
- Authority
- AT
- Austria
- Prior art keywords
- nitrogen oxides
- effluent
- reducing nitrogen
- scr process
- sncr
- Prior art date
Links
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
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/56—Nitrogen oxides
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Treating Waste Gases (AREA)
- Catalysts (AREA)
- Exhaust Gas After Treatment (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/408,122 US4978514A (en) | 1989-09-12 | 1989-09-12 | Combined catalytic/non-catalytic process for nitrogen oxides reduction |
Publications (1)
Publication Number | Publication Date |
---|---|
ATE185284T1 true ATE185284T1 (de) | 1999-10-15 |
Family
ID=23614949
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT90912704T ATE185284T1 (de) | 1989-09-12 | 1990-08-30 | Kombiniertes sncr und scr verfahren zur reduzierung der stickstoffoxyde |
Country Status (8)
Country | Link |
---|---|
US (1) | US4978514A (de) |
EP (1) | EP0491726B1 (de) |
JP (1) | JPH05504906A (de) |
AT (1) | ATE185284T1 (de) |
CA (1) | CA1340451C (de) |
DE (1) | DE69033314T2 (de) |
ES (1) | ES2139569T3 (de) |
WO (1) | WO1991004224A1 (de) |
Families Citing this family (38)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5139754A (en) * | 1989-09-12 | 1992-08-18 | Fuel Tech, Inc. | Catalytic/non-catalytic combination process for nitrogen oxides reduction |
US5543123A (en) * | 1990-08-01 | 1996-08-06 | Nalco Fuel Tech | Low pressure formation of a urea hydrolysate for nitrogen oxides reduction |
JPH04243525A (ja) * | 1991-01-22 | 1992-08-31 | Toyota Motor Corp | 内燃機関の排気浄化装置 |
US5281403B1 (en) * | 1991-09-27 | 1996-06-11 | Noell Inc | Method for converting urea to ammonia |
US5234477A (en) * | 1992-04-28 | 1993-08-10 | Shell Oil Company | Method of reducing NOx emissions in gasoline vehicles |
US5298230A (en) * | 1992-05-01 | 1994-03-29 | Nalco Fuel Tech | Process for the efficient catalytic reduction of nitrogen oxides |
US5233934A (en) * | 1992-08-20 | 1993-08-10 | Wahlco Environmental Systems, Inc. | Control of NOx reduction in flue gas flows |
US5269143A (en) * | 1992-12-07 | 1993-12-14 | Ford Motor Company | Diesel engine turbo-expander |
US5307772A (en) * | 1992-12-16 | 1994-05-03 | Ford Motor Company | Redox catalysis of NOx in internal combustion engines |
DE4423003C2 (de) * | 1993-07-06 | 1999-01-21 | Ford Werke Ag | Verfahren und Vorrichtung zum Reduzieren von NO¶x¶ in den Abgasen von Kraftfahrzeugverbrennungsmotoren |
US5354544A (en) * | 1993-12-27 | 1994-10-11 | Ford Motor Company | Selective reduction of nitric oxide |
EP0667181B1 (de) * | 1994-02-15 | 2000-11-02 | Tokyo Gas Co., Ltd. | Verfahren und Katalysator zur Reinigung von NOx-enthaltenden Abgasen |
US5465690A (en) * | 1994-04-12 | 1995-11-14 | A. Ahlstrom Corporation | Method of purifying gases containing nitrogen oxides and an apparatus for purifying gases in a steam generation boiler |
US5853683A (en) * | 1995-06-19 | 1998-12-29 | Public Services Electric & Gas Corporation | Hybrid SCR/SNCR process |
DE19600869A1 (de) * | 1996-01-12 | 1997-07-17 | Metallgesellschaft Ag | Verfahren zur Entstickung von Rauchgasen |
US5985222A (en) | 1996-11-01 | 1999-11-16 | Noxtech, Inc. | Apparatus and method for reducing NOx from exhaust gases produced by industrial processes |
DE19652740C2 (de) * | 1996-12-18 | 1999-03-11 | Metallgesellschaft Ag | Verfahren zur Entstickung der bei der Herstellung von Zement anfallenden Abgase |
DE19652738A1 (de) * | 1996-12-18 | 1998-06-25 | Metallgesellschaft Ag | Verfahren zur katalytischen Zersetzung von Stickoxiden |
US6403046B1 (en) | 1999-07-26 | 2002-06-11 | Hera, Llc | Pollution control systems using urea and ammonia for the control of emissions from the flue gas of fossil fuel burning facilities |
US6146605A (en) * | 1999-07-26 | 2000-11-14 | Hera, Llc | Combined SCR/SNCR process |
DE60238486D1 (de) | 2001-07-10 | 2011-01-13 | Johnson & Johnson Res Pty Ltd | Verfahren zur genetischen modifikation hämatopoetischer vorläuferzellen und verwendungen der modifizierten zellen |
US20030202927A1 (en) * | 2002-04-24 | 2003-10-30 | Minkara Rafic Y. | Reduction of ammonia in flue gas and fly ash |
US8449288B2 (en) * | 2003-03-19 | 2013-05-28 | Nalco Mobotec, Inc. | Urea-based mixing process for increasing combustion efficiency and reduction of nitrogen oxides (NOx) |
US7670569B2 (en) * | 2003-06-13 | 2010-03-02 | Mobotec Usa, Inc. | Combustion furnace humidification devices, systems & methods |
JP4534729B2 (ja) * | 2003-11-19 | 2010-09-01 | 日本化成株式会社 | 尿素水を用いる脱硝方法 |
US8251694B2 (en) | 2004-02-14 | 2012-08-28 | Nalco Mobotec, Inc. | Method for in-furnace reduction flue gas acidity |
US7537743B2 (en) * | 2004-02-14 | 2009-05-26 | Mobotec Usa, Inc. | Method for in-furnace regulation of SO3 in catalytic NOx reducing systems |
US7390471B2 (en) * | 2005-11-17 | 2008-06-24 | Siemens Power Generation, Inc. | Apparatus and method for catalytic treatment of exhaust gases |
US7410356B2 (en) | 2005-11-17 | 2008-08-12 | Mobotec Usa, Inc. | Circulating fluidized bed boiler having improved reactant utilization |
US8069824B2 (en) | 2008-06-19 | 2011-12-06 | Nalco Mobotec, Inc. | Circulating fluidized bed boiler and method of operation |
FR2934790B1 (fr) * | 2008-08-08 | 2011-11-18 | Lab Sa | Procede et installation d'epuration de fumees de combustion contenant des oxydes d'azote |
US8513153B2 (en) * | 2009-04-22 | 2013-08-20 | Uto Environmental Products Limited | Fuel additive |
US9132385B2 (en) | 2009-11-05 | 2015-09-15 | Johnson Matthey Inc. | System and method to gasify aqueous urea into ammonia vapors using secondary flue gases |
DE102010020277A1 (de) * | 2010-05-11 | 2011-11-17 | Johnson Matthey Catalysts (Germany) Gmbh | Verfahren zur Reduzierung von Stickoxiden im Rauchgas einer Verbrennungsanlage sowie Verbrennungsanlage |
CN104258718B (zh) * | 2014-09-30 | 2016-02-24 | 东方电气集团东方锅炉股份有限公司 | 大型循环流化床锅炉实施选择性非催化还原脱硝的装置 |
CN105056758B (zh) * | 2015-07-31 | 2017-07-04 | 湘潭大学 | 一种流化催化脱除氮氧化物的方法及装置 |
CN105214456A (zh) * | 2015-10-30 | 2016-01-06 | 太仓东能环保设备有限公司 | 一种sncr-scr烟气脱硝工艺 |
CN105833681A (zh) * | 2016-04-19 | 2016-08-10 | 廖引家 | 水泥新型脱硝方法 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5477277A (en) * | 1977-12-02 | 1979-06-20 | Mitsubishi Heavy Ind Ltd | Method and apparatus for reducing nitrogen oxides in combustion exhaust gas |
US4393031A (en) * | 1979-02-22 | 1983-07-12 | Werner Henke | Process for efficiently removing oxides of nitrogen from exhaust gas |
US4719092A (en) * | 1985-10-04 | 1988-01-12 | Fuel Tech, Inc. | Reduction of nitrogen-based pollutants through the use of urea solutions containing oxygenated hydrocarbon solvents |
DE3538259A1 (de) * | 1985-10-28 | 1987-04-30 | Kali Chemie Ag | Katalytisches abgasbehandlungsverfahren |
US4731231A (en) * | 1986-05-05 | 1988-03-15 | Robert A. Perry | NO reduction using sublimation of cyanuric acid |
US4780289A (en) * | 1987-05-14 | 1988-10-25 | Fuel Tech, Inc. | Process for nitrogen oxides reduction and minimization of the production of other pollutants |
US4830839A (en) * | 1987-02-13 | 1989-05-16 | Fuel Tech, Inc. | Ammonia scrubbing |
US4777024A (en) * | 1987-03-06 | 1988-10-11 | Fuel Tech, Inc. | Multi-stage process for reducing the concentration of pollutants in an effluent |
DE3830045C2 (de) * | 1988-09-03 | 1993-09-30 | Bayer Ag | Verfahren zur Reduktion von in Abgasen enthaltenen Stickoxiden mittels eines zeolithhaltigen Katalysators |
DK166377C (da) * | 1989-02-10 | 1993-09-27 | Haldor Topsoe As | Fremgangsmaade til fjernelse af nitrogenoxider fra udstoedningsgasser fra turbiner |
-
1989
- 1989-09-12 US US07/408,122 patent/US4978514A/en not_active Expired - Lifetime
- 1989-09-29 CA CA000614827A patent/CA1340451C/en not_active Expired - Lifetime
-
1990
- 1990-08-30 AT AT90912704T patent/ATE185284T1/de not_active IP Right Cessation
- 1990-08-30 WO PCT/US1990/004955 patent/WO1991004224A1/en active IP Right Grant
- 1990-08-30 DE DE69033314T patent/DE69033314T2/de not_active Expired - Lifetime
- 1990-08-30 EP EP90912704A patent/EP0491726B1/de not_active Expired - Lifetime
- 1990-08-30 ES ES90912704T patent/ES2139569T3/es not_active Expired - Lifetime
- 1990-08-30 JP JP2512312A patent/JPH05504906A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
WO1991004224A1 (en) | 1991-04-04 |
EP0491726A1 (de) | 1992-07-01 |
DE69033314D1 (de) | 1999-11-11 |
DE69033314T2 (de) | 2000-05-11 |
ES2139569T3 (es) | 2000-02-16 |
EP0491726B1 (de) | 1999-10-06 |
CA1340451C (en) | 1999-03-16 |
US4978514A (en) | 1990-12-18 |
EP0491726A4 (en) | 1993-04-14 |
JPH05504906A (ja) | 1993-07-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
UEP | Publication of translation of european patent specification | ||
EELA | Cancelled due to lapse of time |