ATE130780T1 - Methode zum entfernen von nox- und sox-emissionen aus verbrennungssystemen unter verwendung stickstoffhaltiger verbindungen. - Google Patents
Methode zum entfernen von nox- und sox-emissionen aus verbrennungssystemen unter verwendung stickstoffhaltiger verbindungen.Info
- Publication number
- ATE130780T1 ATE130780T1 AT88302535T AT88302535T ATE130780T1 AT E130780 T1 ATE130780 T1 AT E130780T1 AT 88302535 T AT88302535 T AT 88302535T AT 88302535 T AT88302535 T AT 88302535T AT E130780 T1 ATE130780 T1 AT E130780T1
- Authority
- AT
- Austria
- Prior art keywords
- nox
- oxygen
- sox
- reducing agent
- reduction
- Prior art date
Links
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title abstract 4
- 238000000034 method Methods 0.000 title abstract 3
- 229910052757 nitrogen Inorganic materials 0.000 title abstract 2
- 238000002485 combustion reaction Methods 0.000 title 1
- 150000001875 compounds Chemical class 0.000 title 1
- 239000003638 chemical reducing agent Substances 0.000 abstract 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 4
- 238000000354 decomposition reaction Methods 0.000 abstract 4
- 239000001301 oxygen Substances 0.000 abstract 4
- 229910052760 oxygen Inorganic materials 0.000 abstract 4
- 238000006243 chemical reaction Methods 0.000 abstract 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 abstract 2
- 239000000446 fuel Substances 0.000 abstract 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract 1
- OWIKHYCFFJSOEH-UHFFFAOYSA-N Isocyanic acid Chemical compound N=C=O OWIKHYCFFJSOEH-UHFFFAOYSA-N 0.000 abstract 1
- 235000019738 Limestone Nutrition 0.000 abstract 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 abstract 1
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 abstract 1
- 229910052921 ammonium sulfate Inorganic materials 0.000 abstract 1
- 235000011130 ammonium sulphate Nutrition 0.000 abstract 1
- XLJMAIOERFSOGZ-UHFFFAOYSA-N anhydrous cyanic acid Natural products OC#N XLJMAIOERFSOGZ-UHFFFAOYSA-N 0.000 abstract 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 abstract 1
- 239000000920 calcium hydroxide Substances 0.000 abstract 1
- 235000011116 calcium hydroxide Nutrition 0.000 abstract 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 abstract 1
- 239000000292 calcium oxide Substances 0.000 abstract 1
- 235000012255 calcium oxide Nutrition 0.000 abstract 1
- 239000004202 carbamide Substances 0.000 abstract 1
- 239000007806 chemical reaction intermediate Substances 0.000 abstract 1
- 239000010459 dolomite Substances 0.000 abstract 1
- 229910000514 dolomite Inorganic materials 0.000 abstract 1
- ZFSLODLOARCGLH-UHFFFAOYSA-N isocyanuric acid Chemical compound OC1=NC(O)=NC(O)=N1 ZFSLODLOARCGLH-UHFFFAOYSA-N 0.000 abstract 1
- 239000006028 limestone Substances 0.000 abstract 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
- B01D53/46—Removing components of defined structure
- B01D53/60—Simultaneously removing sulfur oxides and 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
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/56—Nitrogen oxides
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
- F02B2275/14—Direct injection into combustion chamber
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
-
- 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)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
- Chimneys And Flues (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US07/039,324 US4861567A (en) | 1987-04-16 | 1987-04-16 | Methods of reducing NOx and SOx emissions from combustion systems |
| US07/073,980 US4851201A (en) | 1987-04-16 | 1987-07-15 | Methods of removing NOx and SOx emissions from combustion systems using nitrogenous compounds |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ATE130780T1 true ATE130780T1 (de) | 1995-12-15 |
Family
ID=26716018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT88302535T ATE130780T1 (de) | 1987-04-16 | 1988-03-23 | Methode zum entfernen von nox- und sox-emissionen aus verbrennungssystemen unter verwendung stickstoffhaltiger verbindungen. |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US4851201A (de) |
| EP (1) | EP0287224B1 (de) |
| AT (1) | ATE130780T1 (de) |
| DE (1) | DE3854728T2 (de) |
Families Citing this family (52)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4908193A (en) * | 1986-05-05 | 1990-03-13 | Perry Robert A | No reduction using sublimation of cyanuric acid |
| US4886650A (en) * | 1986-05-05 | 1989-12-12 | Robert Perry | No reduction using sublimation of cyanuric acid |
| US5180565A (en) * | 1986-05-05 | 1993-01-19 | Perry Robert A | No reduction using sublimation of cyanuric acid |
| US4996036A (en) * | 1988-12-28 | 1991-02-26 | Allied-Signal Inc. | Abatement of NOx from hydroxylamine disulfonate process |
| GB2232972B (en) * | 1989-05-06 | 1993-09-15 | Hitachi Shipbuilding Eng Co | Treatment of combustion exhaust gas |
| CA1304939C (en) * | 1990-09-17 | 1992-07-14 | Rene Mangal | Process for controlling acid gas emissions in power plant flue gases |
| US5058514A (en) * | 1989-10-18 | 1991-10-22 | Mozes Miriam S | Process for controlling acid gas emissions in power plant flue gases |
| US4997631A (en) * | 1990-03-07 | 1991-03-05 | Fuel Tech, Inc. | Process for reducing nitrogen oxides without generating nitrous oxide |
| US5165903A (en) * | 1990-04-16 | 1992-11-24 | Public Service Company Of Colorado | Integrated process and apparatus for control of pollutants in coal-fired boilers |
| US5543123A (en) * | 1990-08-01 | 1996-08-06 | Nalco Fuel Tech | Low pressure formation of a urea hydrolysate for nitrogen oxides reduction |
| US5342599A (en) * | 1990-09-14 | 1994-08-30 | Cummins Power Generation, Inc. | Surface stabilized sources of isocyanic acid |
| US5171554A (en) * | 1990-09-20 | 1992-12-15 | Molecular Technology Corporation | Conversion of formaldehyde and nitrogen to a gaseous product and use of gaseous product in reduction of nitrogen oxide in effluent gases |
| US5234670A (en) * | 1990-09-20 | 1993-08-10 | Molecular Technology Corporation | Reduction of nitrogen oxide in effluent gases using NCO radicals |
| US5234671A (en) * | 1990-09-20 | 1993-08-10 | Molecular Technology Corporation | Reduction of nitrogen oxide in effluent gases using formaldehyde and/or formaldehyde-derived free radicals |
| US5087431A (en) * | 1990-09-20 | 1992-02-11 | Molecular Technology Corporation | Catalytic decomposition of cyanuric acid and use of product to reduce nitrogen oxide emissions |
| US5192515A (en) * | 1990-09-20 | 1993-03-09 | Molecular Technology Corporation | Reduction of nitrogen oxide and carbon monoxide in effluent gases |
| US5171558A (en) * | 1990-09-20 | 1992-12-15 | Molecular Technology Corporation | Catalytic decomposition of cyanuric acid and use of product to reduce nitrogen oxide emissions |
| US5078982A (en) * | 1990-09-20 | 1992-01-07 | Molecular Technology Corporation | Reduction of nitrogen oxide in effluent gases using formaldehyde |
| US5139755A (en) * | 1990-10-17 | 1992-08-18 | Energy And Environmental Research Corporation | Advanced reburning for reduction of NOx emissions in combustion systems |
| US5118481A (en) * | 1990-11-09 | 1992-06-02 | Energy And Environmental Research Corporation | Methods for reducing NOx emissions from combustion effluents |
| US5270025A (en) * | 1991-04-05 | 1993-12-14 | Energy & Environmental Research Corp. | Methods for controlling N2 O emissions and for the reduction of NO.sub.x emissions in combustion systems while controlling N2 O emissions |
| US5252058A (en) * | 1991-06-25 | 1993-10-12 | Fulton Thermatec Corporation | Method and apparatus for recirculating flue gas in a pulse combustor |
| US5145354A (en) * | 1991-06-25 | 1992-09-08 | Fulton Thermatec Corporation | Method and apparatus for recirculating flue gas in a pulse combustor |
| IT1250740B (it) * | 1991-08-02 | 1995-04-21 | Eniricerche Spa | Riduzione degli inquinanti nell'effluente di combustione |
| JPH07501260A (ja) * | 1991-08-26 | 1995-02-09 | カミンズ パワー ジェネレーション,インコーポレイテッド | シアヌル酸を用いる排ガスからのNOxの除去法および装置 |
| US5263850A (en) * | 1992-02-05 | 1993-11-23 | Boston Thermal Energy Corporation | Emission control system for an oil-fired combustion process |
| DE4206024A1 (de) * | 1992-02-27 | 1993-09-02 | Asea Brown Boveri | Verfahren zur reduktion von stickoxyden in abgasen |
| US5279108A (en) * | 1992-02-28 | 1994-01-18 | Union Oil Company Of California | System for reduction of NOx in jet engine exhaust |
| US6258336B1 (en) | 1995-06-09 | 2001-07-10 | Gas Research Institute | Method and apparatus for NOx reduction in flue gases |
| EP0877649B1 (de) * | 1996-01-11 | 2004-06-02 | Energy And Environmental Research Corporation | VERBESSETER FORTGESCHRITTENE WIEDERVERBRENNUNGSVERFAHREN MIT HOHEM LEISTUNGSGRAD ZUR ERNIEDRUNG VON NOx-EMMISSIONEN |
| US5985222A (en) * | 1996-11-01 | 1999-11-16 | Noxtech, Inc. | Apparatus and method for reducing NOx from exhaust gases produced by industrial processes |
| US5967061A (en) * | 1997-01-14 | 1999-10-19 | Energy And Environmental Research Corporation | Method and system for reducing nitrogen oxide and sulfur oxide emissions from carbonaceous fuel combustion flue gases |
| US5988081A (en) * | 1997-07-22 | 1999-11-23 | Energy & Environmental Research Corporation | Method and system for the disposal of coal preparation plant waste coal through slurry co-firing in cyclone-fired boilers to effect a reduction in nitrogen oxide emissions |
| DE19746817C1 (de) * | 1997-10-23 | 1999-03-18 | Wuelfrather Zement Gmbh & Co K | Verfahren und Vorrichtung zur Verringerung von NOx-Emissionen |
| WO1999030811A1 (de) * | 1997-12-12 | 1999-06-24 | Fev Motorentechnik Gmbh & Co. Kommanditgesellschaft | Verfahren zur reduktion von stickoxiden in sauerstoffhaltigen abgasen, insbesondere abgasen von verbrennungsmotoren |
| RU2140810C1 (ru) * | 1998-07-21 | 1999-11-10 | Акционерное общество открытого типа "Всероссийский теплотехнический научно-исследовательский институт (ВТИ)" | Способ очистки продуктов горения от оксидов азота с одновременным кондиционированием дымовых газов перед электрофильтром |
| US6858540B2 (en) * | 2000-05-11 | 2005-02-22 | Applied Materials, Inc. | Selective removal of tantalum-containing barrier layer during metal CMP |
| US6280695B1 (en) | 2000-07-10 | 2001-08-28 | Ge Energy & Environmental Research Corp. | Method of reducing NOx in a combustion flue gas |
| US6436359B1 (en) | 2000-10-25 | 2002-08-20 | Ec&C Technologies, Inc. | Method for controlling the production of ammonia from urea for NOx scrubbing |
| BR0211763A (pt) * | 2001-08-08 | 2005-02-01 | Cement Industry Environmental | Introdução de refugo de cianeto como um redutor de nox |
| US7335014B2 (en) * | 2003-06-12 | 2008-02-26 | Mobotec Usa, Inc. | Combustion NOx reduction method |
| US7670569B2 (en) | 2003-06-13 | 2010-03-02 | Mobotec Usa, Inc. | Combustion furnace humidification devices, systems & methods |
| US7537743B2 (en) | 2004-02-14 | 2009-05-26 | Mobotec Usa, Inc. | Method for in-furnace regulation of SO3 in catalytic NOx reducing systems |
| US8251694B2 (en) | 2004-02-14 | 2012-08-28 | Nalco Mobotec, Inc. | Method for in-furnace reduction flue gas acidity |
| US7168947B2 (en) * | 2004-07-06 | 2007-01-30 | General Electric Company | Methods and systems for operating combustion systems |
| US7410356B2 (en) | 2005-11-17 | 2008-08-12 | Mobotec Usa, Inc. | Circulating fluidized bed boiler having improved reactant utilization |
| US20090148370A1 (en) * | 2007-12-06 | 2009-06-11 | Spencer Iii Herbert W | Process to produce ammonia from urea |
| US8069824B2 (en) | 2008-06-19 | 2011-12-06 | Nalco Mobotec, Inc. | Circulating fluidized bed boiler and method of operation |
| US9586831B2 (en) | 2014-06-09 | 2017-03-07 | Wahlco, Inc. | Urea to ammonia process |
| CN106000072A (zh) * | 2016-06-29 | 2016-10-12 | 青岛惠城环保科技股份有限公司 | 一种降低fcc再生烟气中nox排放的方法 |
| RU2701014C1 (ru) * | 2017-04-26 | 2019-09-24 | Евгений Михайлович Герасимов | Способ термического обезвреживания газов продувки скважин, выходящих из бурения на месторождениях сернистых газов |
| PT3928032T (pt) * | 2019-02-20 | 2024-02-28 | Sarp Ind | Método de tratamento de gases de combustão de unidades de combustão |
Family Cites Families (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3382822A (en) * | 1967-02-24 | 1968-05-14 | Interior Usa | Method of burning coal |
| US3746498A (en) * | 1972-01-24 | 1973-07-17 | Combustion Eng | Reducing no{11 {11 emissions by additive injection |
| US3900554A (en) * | 1973-03-16 | 1975-08-19 | Exxon Research Engineering Co | Method for the reduction of the concentration of no in combustion effluents using ammonia |
| GB1488087A (en) * | 1975-03-04 | 1977-10-05 | Zink Co John | Process for disposal of oxides of nitrogen |
| JPS51137670A (en) * | 1975-05-26 | 1976-11-27 | Asahi Chem Ind Co Ltd | Method for decreasing nitrogen oxides in exhaust gas |
| US4041699A (en) * | 1975-12-29 | 1977-08-16 | The Garrett Corporation | High temperature gas turbine |
| JPS5291776A (en) * | 1976-01-30 | 1977-08-02 | Mitsubishi Heavy Ind Ltd | Treatment of nitrogen oxides in exhaust gas |
| US4208386A (en) * | 1976-03-03 | 1980-06-17 | Electric Power Research Institute, Inc. | Urea reduction of NOx in combustion effluents |
| JPS5318466A (en) * | 1976-08-05 | 1978-02-20 | Mitsubishi Heavy Ind Ltd | Charging method for oxygen-containing hydrocarbons and/or their precursors into exhaust gas |
| JPS53128023A (en) * | 1977-04-15 | 1978-11-08 | Toray Ind Inc | Method for reducing the concentration of nitrogen oxide in combustion effluent gas |
| JPS5428771A (en) * | 1977-08-08 | 1979-03-03 | Asahi Fibreglass Co | Waste gas treatment |
| US4325924A (en) * | 1977-10-25 | 1982-04-20 | Electric Power Research Institute, Inc. | Urea reduction of NOx in fuel rich combustion effluents |
| US4395223A (en) * | 1978-06-09 | 1983-07-26 | Hitachi Shipbuilding & Engineering Co., Ltd. | Multi-stage combustion method for inhibiting formation of nitrogen oxides |
| US4335084A (en) * | 1980-01-24 | 1982-06-15 | Roldiva, Inc. | Method for reducing NOx emissions from combustion processes |
| US4368057A (en) * | 1980-10-14 | 1983-01-11 | Matthews Ronald D | Method for reducing ammonia concentration in pre-combusted fuel gas using nitric oxide |
| DE3428231A1 (de) * | 1983-12-16 | 1985-07-04 | Süd-Chemie AG, 8000 München | Verfahren zur entfernung von stickoxiden aus abgasen |
| DE3447616A1 (de) * | 1983-12-30 | 1985-07-11 | Skw Trostberg Ag, 8223 Trostberg | Mittel und verfahren zur gleichzeitigen entfernung von schwefel- und stickoxiden aus abgasen |
| 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 |
| US4645652A (en) * | 1985-11-29 | 1987-02-24 | General Electric Company | Method for scrubbing sulfur oxides and nitrogen oxides in a flue gas duct |
| US4731233A (en) * | 1986-01-09 | 1988-03-15 | Thompson Richard E | Method and composition for utilizing lime-urea hydrates to simultaneously reduce NOx and SOx in combustion effluents |
| US4731231A (en) * | 1986-05-05 | 1988-03-15 | Robert A. Perry | NO reduction using sublimation of cyanuric acid |
-
1987
- 1987-07-15 US US07/073,980 patent/US4851201A/en not_active Expired - Fee Related
-
1988
- 1988-03-23 DE DE3854728T patent/DE3854728T2/de not_active Expired - Fee Related
- 1988-03-23 AT AT88302535T patent/ATE130780T1/de active
- 1988-03-23 EP EP88302535A patent/EP0287224B1/de not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP0287224A3 (en) | 1990-12-12 |
| EP0287224B1 (de) | 1995-11-29 |
| EP0287224A2 (de) | 1988-10-19 |
| DE3854728D1 (de) | 1996-01-11 |
| US4851201A (en) | 1989-07-25 |
| DE3854728T2 (de) | 1996-10-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ATE130780T1 (de) | Methode zum entfernen von nox- und sox-emissionen aus verbrennungssystemen unter verwendung stickstoffhaltiger verbindungen. | |
| EP0495089B1 (de) | Stickoxidreduktion mittels eines harnstoffhydrolysats | |
| WO1997025134B1 (en) | IMPROVED ADVANCED REBURNING METHODS FOR HIGH EFFICIENCY NOx CONTROL | |
| ATE347436T1 (de) | Verfahren und einrichtung zur kontrolle von ammoniak-schlupf in der reduktion von schwefeldioxidemissionen | |
| ATE242041T1 (de) | Verfahren zur kontrolle von ammonia-schlupf in der reduktion von schwefeldioxidemissionen | |
| ATE454204T1 (de) | Verfahren zum reinigen von nox in abgasen unter verwendung von chlordioxid | |
| DE3688496D1 (de) | Verfahren zur entfernung von verunreinigungen aus abgasemissionen. | |
| CA2203210A1 (en) | Manufacture of precipitated calcium carbonate | |
| ATE156458T1 (de) | Verfahren zur reinigung von gasen mittels aminhaltiger absorptionslössungen | |
| ATE74532T1 (de) | Verfahren zum abscheiden von stickoxiden aus einem rauchgasstrom. | |
| DE3872536D1 (de) | Verfahren zum einmischen von ammoniak in einen rauchgasstrom. | |
| DE59808917D1 (de) | Verfahren zur Entstickung von Rauchgasen | |
| KR970701671A (ko) | 오염 조절을 위한 방법 및 조성물(process and composition for pollution control) | |
| DE3269530D1 (en) | A method for cleaning gas mixtures which might contain dust from a urea plant | |
| ATE102847T1 (de) | Verfahren zur entfernung von ammoniak aus abgasen. | |
| KR920002210A (ko) | 로내동시탈황탈질방법 | |
| ATE49511T1 (de) | Verfahren und anlage zur reinigung von rauchgas. | |
| GR3005953T3 (de) | ||
| EP0937500A4 (de) | Entstickungskatalysator, methode zu seiner herstellung und abgasreinigungsverfahren | |
| ATE138644T1 (de) | Verfahren zur herstellung von guanidinderivativen | |
| US4888165A (en) | Process for the reduction of nitrogen oxides in an effluent using a heterocyclic hydrocarbon | |
| US20060090678A1 (en) | Reduction of NOx in combustion flue gas | |
| NZ234483A (en) | Preparation of asymmetric urea derivatives by reacting isocyanic acid, ammonia and an amine | |
| DE69414304D1 (de) | Verfahren zur Reduzierung des Ammoniakgehalts von Abgasen aus Harnstoff-Herstellungsfabriken | |
| DK725588A (da) | Fremgangsmaade til fjernelse af nitrogenoxider fra afgangsgas |