FI930377A - Reducering kvaeveoxider under anvaendning av ureahydrolysat - Google Patents

Reducering kvaeveoxider under anvaendning av ureahydrolysat Download PDF

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Publication number
FI930377A
FI930377A FI930377A FI930377A FI930377A FI 930377 A FI930377 A FI 930377A FI 930377 A FI930377 A FI 930377A FI 930377 A FI930377 A FI 930377A FI 930377 A FI930377 A FI 930377A
Authority
FI
Finland
Prior art keywords
ureahydrolysat
kvaeveoxider
reducering
anvaendning
hydrolysate
Prior art date
Application number
FI930377A
Other languages
English (en)
Other versions
FI930377A0 (fi
Inventor
Harpe Thure Von
Reinhard Pachaly
M Linda Lin
Daniel V Diep
Joseph B Wegrzyn
Original Assignee
Nalco Fuel Tech
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nalco Fuel Tech filed Critical Nalco Fuel Tech
Publication of FI930377A publication Critical patent/FI930377A/fi
Publication of FI930377A0 publication Critical patent/FI930377A0/fi

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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
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
    • C01C1/00—Ammonia; Compounds thereof
    • C01C1/02—Preparation, purification or separation of ammonia
    • C01C1/08—Preparation of ammonia from nitrogenous organic substances
    • C01C1/086—Preparation of ammonia from nitrogenous organic substances from 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
    • F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
    • F01N2240/40—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being a hydrolysis catalyst
    • 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
    • Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
    • Y02C20/00—Capture or disposal of greenhouse gases
    • Y02C20/10—Capture or disposal of greenhouse gases of nitrous oxide (N2O)
FI930377A 1990-08-01 1993-01-29 Reducering kvaeveoxider under anvaendning av ureahydrolysat FI930377A0 (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/561,154 US5240688A (en) 1990-08-01 1990-08-01 Process for the in-line hydrolysis of urea
PCT/US1991/005461 WO1992002450A1 (en) 1990-08-01 1991-08-01 Nitrogen oxides reduction using a urea hydrolysate

Publications (2)

Publication Number Publication Date
FI930377A true FI930377A (fi) 1993-01-29
FI930377A0 FI930377A0 (fi) 1993-01-29

Family

ID=24240855

Family Applications (1)

Application Number Title Priority Date Filing Date
FI930377A FI930377A0 (fi) 1990-08-01 1993-01-29 Reducering kvaeveoxider under anvaendning av ureahydrolysat

Country Status (8)

Country Link
US (2) US5240688A (fi)
EP (2) EP0495089B1 (fi)
AT (2) ATE134155T1 (fi)
AU (1) AU8297991A (fi)
CA (2) CA2088576A1 (fi)
DE (2) DE69114503T2 (fi)
FI (1) FI930377A0 (fi)
WO (2) WO1992002450A1 (fi)

Families Citing this family (75)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5441713A (en) * 1988-04-29 1995-08-15 Nalco Fuel Tech Hardness suppression in urea solutions
US6051040A (en) * 1988-12-28 2000-04-18 Clean Diesel Technologies, Inc. Method for reducing emissions of NOx and particulates from a diesel engine
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
US5281403B1 (en) * 1991-09-27 1996-06-11 Noell Inc Method for converting urea to ammonia
FR2682110B1 (fr) * 1991-10-02 1995-05-24 Atta Ligands amphiphiles perfluoroalkyles leurs complexes metalliques et leurs utilisations dans des preparations a usage therapeutique.
ATE157901T1 (de) * 1992-02-10 1997-09-15 Man Nutzfahrzeuge Ag Vorrichtung zur katalytischen nox-reduktion
TW229225B (fi) * 1992-05-06 1994-09-01 Malco Fuel Tech
US5489419A (en) * 1992-10-13 1996-02-06 Nalco Fuel Tech Process for pollution control
US5536482A (en) * 1992-10-13 1996-07-16 Nalco Fuel Tech Process for pollution control
US5404841A (en) * 1993-08-30 1995-04-11 Valentine; James M. Reduction of nitrogen oxides emissions from diesel engines
WO1995009810A1 (en) * 1993-10-06 1995-04-13 Nalco Fuel Tech Low pressure formation of a urea hydrolysate for nitrogen oxides reduction
US5489420A (en) * 1994-03-10 1996-02-06 Nalco Fuel Tech Nitrogen oxides reducing agent and a phosphate
US5658547A (en) * 1994-06-30 1997-08-19 Nalco Fuel Tech Simplified efficient process for reducing NOx, SOx, and particulates
DE4425420A1 (de) * 1994-07-19 1995-07-27 Daimler Benz Ag Verfahren zur Verminderung des Gehaltes an Stickstoffoxiden in den Abgasen von Verbrennungskraftmaschinen
AU3495195A (en) * 1994-08-26 1996-03-22 Us Sulfamate, Inc. Molten urea dehydrate derived compositions
GB9513989D0 (en) * 1995-07-08 1995-09-06 Brunner Mond & Co Ltd Treatment of flue gases
FR2740356B1 (fr) * 1995-10-31 1997-11-28 Rhone Poulenc Chimie Procede de traitement de fumees avec du carbonate et/ou du bicarbonate de sodium humidifies
US5992141A (en) * 1996-04-02 1999-11-30 Kleen Air Systems, Inc. Ammonia injection in NOx control
US5681536A (en) * 1996-05-07 1997-10-28 Nebraska Public Power District Injection lance for uniformly injecting anhydrous ammonia and air into a boiler cavity
US20050019363A1 (en) * 1996-09-30 2005-01-27 Blount David H. Hydrolyzed urea condensate fertilizer, fungicide and insecticide
US6077491A (en) 1997-03-21 2000-06-20 Ec&C Technologies Methods for the production of ammonia from urea and/or biuret, and uses for NOx and/or particulate matter removal
US6361754B1 (en) * 1997-03-27 2002-03-26 Clean Diesel Technologies, Inc. Reducing no emissions from an engine by on-demand generation of ammonia for selective catalytic reduction
US5809775A (en) * 1997-04-02 1998-09-22 Clean Diesel Technologies, Inc. Reducing NOx emissions from an engine by selective catalytic reduction utilizing solid reagents
US5976475A (en) * 1997-04-02 1999-11-02 Clean Diesel Technologies, Inc. Reducing NOx emissions from an engine by temperature-controlled urea injection for selective catalytic reduction
JPH11171535A (ja) * 1997-12-05 1999-06-29 Mitsubishi Heavy Ind Ltd アンモニア発生方法及び排ガス処理方法
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
WO1999056858A2 (de) * 1998-04-30 1999-11-11 Siemens Aktiengesellschaft Verfahren und vorrichtung zur katalytischen stickoxidminderung
ITMI981155A1 (it) * 1998-05-25 1999-11-25 Siirtec Nigi S P A Processo per la produzione di ammoniaca mediante idrolisi dell'urea
US6093380A (en) * 1998-10-16 2000-07-25 Siirtec Nigi, S.P.A. Method and apparatus for pollution control in exhaust gas streams from fossil fuel burning facilities
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
US6511644B1 (en) 2000-08-28 2003-01-28 The Chemithon Corporation Method for removing contaminants in reactors
US6436359B1 (en) 2000-10-25 2002-08-20 Ec&C Technologies, Inc. Method for controlling the production of ammonia from urea for NOx scrubbing
US6761868B2 (en) * 2001-05-16 2004-07-13 The Chemithon Corporation Process for quantitatively converting urea to ammonia on demand
JP3820163B2 (ja) * 2002-02-22 2006-09-13 三井化学株式会社 尿素濃度測定方法および装置
US20030211024A1 (en) * 2002-05-10 2003-11-13 Wojichowski David Lee Methods of converting urea to ammonia for SCR, SNCR and flue gas conditioning
US6887284B2 (en) * 2002-07-12 2005-05-03 Dannie B. Hudson Dual homogenization system and process for fuel oil
KR100498083B1 (ko) * 2002-08-27 2005-07-01 강희수 원사 빔 적재대
US6887449B2 (en) * 2002-11-21 2005-05-03 The Chemithon Corporation Method of quantitatively producing ammonia from urea
NZ551021A (en) * 2004-05-05 2009-11-27 Vechten James Alden Van Guanidine based composition and system for generating energy
US20080314027A1 (en) * 2005-02-16 2008-12-25 Imi Vision Limited Exhaust Gas Treatment
WO2006087553A1 (en) * 2005-02-16 2006-08-24 Imi Vision Limited Exhaust as treatment
US7985280B2 (en) * 2007-02-20 2011-07-26 Hitachi Power Systems America, Ltd. Separation of aqueous ammonia components for NOx reduction
US20080267837A1 (en) * 2007-04-27 2008-10-30 Phelps Calvin E Conversion of urea to reactants for NOx reduction
EP2167219A1 (en) * 2007-07-12 2010-03-31 Powerspan Corp. Scrubbing of ammonia with urea ammonium nitrate solution
US20110110841A1 (en) * 2007-08-24 2011-05-12 Powerspan Corp Method and apparatus for producing ammonium carbonate from urea
US20090148370A1 (en) * 2007-12-06 2009-06-11 Spencer Iii Herbert W Process to produce ammonia from urea
US20110125326A1 (en) * 2008-07-29 2011-05-26 Powerspan Corp. Using raman spectroscppy to control carbonate/bicarbonate concentrations
US8562929B2 (en) 2010-04-02 2013-10-22 Ohio University Selective catalytic reduction via electrolysis of urea
SG184418A1 (en) * 2010-04-02 2012-11-29 Univ Ohio Selective catalytic reduction via electrolysis of urea
WO2012104205A1 (en) * 2011-02-04 2012-08-09 Paul Scherrer Institut Ammonia generator converting liquid ammonia precursor solutions to gaseous ammonia for denox-applications using selective catalytic reduction of nitrogen oxides
WO2012123378A1 (en) 2011-03-11 2012-09-20 Puregeneration (Uk) Ltd Production and use of cyanoguanidine and cyanamide
US8518354B2 (en) * 2011-07-29 2013-08-27 Deere & Company Diesel exhaust fluid formulation having a high ammonium content and a low freezing point
CN102553412A (zh) * 2012-02-10 2012-07-11 山东大学 一种利用高反应活性氨基还原剂进行烟气脱硝的方法
DE102014204307A1 (de) 2013-03-19 2014-09-25 Ford Global Technologies, Llc Verfahren und Anordnung zur Behandlung von Abgasen eines Verbrennungsmotors
EP2926886A1 (en) * 2014-04-01 2015-10-07 Inergy Automotive Systems Research (Société Anonyme) System comprising a decomposition unit for use on board of a vehicle
US9586831B2 (en) 2014-06-09 2017-03-07 Wahlco, Inc. Urea to ammonia process
CN104477939B (zh) * 2014-10-28 2017-01-18 河南骏化发展股份有限公司 一种低压水解工艺
CN106807193A (zh) * 2015-12-02 2017-06-09 昆山市三维换热器有限公司 一种烟气脱硝工艺系统
US10844763B2 (en) 2017-03-10 2020-11-24 R. F. Macdonald Co. Process for direct urea injection with selective catalytic reduction (SCR) for NOx reduction in hot gas streams and related systems and assemblies
CN106986434B (zh) * 2017-04-20 2022-12-02 中国科学院生态环境研究中心 一种抗生素生产废水的预处理方法
US10767529B2 (en) 2018-11-08 2020-09-08 Faurecia Emissions Control Technologies, Usa, Llc Automotive exhaust aftertreatment system having onboard ammonia reactor with heated doser
US10876454B2 (en) 2018-11-08 2020-12-29 Faurecia Emissions Control Technologies, Usa, Llc Automotive exhaust aftertreatment system with multi-reductant injection and doser controls
US10683787B2 (en) 2018-11-08 2020-06-16 Faurecia Emissions Control Technologies, Usa, Llc Automotive exhaust aftertreatment system having onboard ammonia reactor with hybrid heating
US11193413B2 (en) 2019-12-12 2021-12-07 Faurecia Emissions Control Technologies, Usa, Llc Exhaust aftertreatment system with virtual temperature determination and control
CN111135714A (zh) * 2020-01-15 2020-05-12 安徽晨晰洁净科技有限公司 一种碳酸氢铵作为scr脱硝还原剂的方法
US11319853B2 (en) 2020-03-31 2022-05-03 Faurecia Emissions Control Technologies, Usa, Llc Automotive exhaust aftertreatment system with doser
US11022014B1 (en) 2020-04-28 2021-06-01 Faurecia Emissions Control Technologies, Usa, Llc Exhaust aftertreatment system with heated flash-boiling doser
US11092054B1 (en) 2020-04-29 2021-08-17 Faurecia Emissions Control Technologies, Usa, Llc Flash-boiling doser with thermal transfer helix
US11511239B2 (en) 2020-04-29 2022-11-29 Faurecia Emissions Control Technologies, Usa, Llc Heated flash-boiling doser with integrated helix
US11384667B2 (en) 2020-05-29 2022-07-12 Faurecia Emissions Control Technologies, Usa, Llc Exhaust aftertreatment system with heated dosing control
US11225894B1 (en) 2020-06-30 2022-01-18 Faurecia Emissions Control Technologies, Usa, Llc Exhaust aftertreatment system with thermally controlled reagent doser
CN112354487B (zh) * 2020-11-06 2022-10-14 李东田 一种碳酸铵原料气的制备方法
CN115057454B (zh) * 2022-06-28 2023-06-23 江苏国瑞特环保工程技术有限公司 一种强碱性环境改良型尿素水解制氨系统

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE200617C (fi) *
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
US4208386A (en) * 1976-03-03 1980-06-17 Electric Power Research Institute, Inc. Urea reduction of NOx in combustion effluents
JPS5314662A (en) * 1976-07-28 1978-02-09 Hitachi Ltd Method for decreasing nitrogen oxides concentration of combustion exhaust gas
US4087513A (en) * 1977-08-12 1978-05-02 Olin Corporation Method of hydrolyzing urea contained in waste water streams
US4325924A (en) * 1977-10-25 1982-04-20 Electric Power Research Institute, Inc. Urea reduction of NOx in fuel rich combustion effluents
JPS5486020A (en) * 1977-12-21 1979-07-09 Okubo Yoshinori Combustion method of hydrocarbon fuel
US4168299A (en) * 1978-03-20 1979-09-18 Olin Corporation Catalytic method for hydrolyzing urea
NL8102391A (nl) * 1981-05-15 1982-12-01 Unie Van Kunstmestfab Bv Werkwijze voor het winnen van waardevolle bestanddelen uit de afvalstromen verkregen bij de ureumbereiding.
NL8105027A (nl) * 1981-11-06 1983-06-01 Stamicarbon Werkwijze voor het omzetten in ammoniak en kooldioxide van gasvormige verbindingen die stikstof- en koolstofatomen bevatten.
US4626417A (en) * 1983-09-29 1986-12-02 Union Oil Company Of California Methods for chemically reducing nitrogen oxides
US4777024A (en) * 1987-03-06 1988-10-11 Fuel Tech, Inc. Multi-stage process for reducing the concentration of pollutants in an effluent
US4780289A (en) * 1987-05-14 1988-10-25 Fuel Tech, Inc. Process for nitrogen oxides reduction and minimization of the production of other pollutants
JPS6419665A (en) * 1987-07-14 1989-01-23 Jeol Ltd Ion beam device
JPH03503735A (ja) * 1988-02-02 1991-08-22 ジョーンズ，デイル　ゴードン 窒素酸化物の還元を目的とする２段ボイラー注入方法と装置
AT390208B (de) * 1988-05-09 1990-04-10 Waagner Biro Ag Verfahren zur entfernung von stickoxiden
DE3830045C2 (de) * 1988-09-03 1993-09-30 Bayer Ag Verfahren zur Reduktion von in Abgasen enthaltenen Stickoxiden mittels eines zeolithhaltigen Katalysators
JPH02191528A (ja) * 1989-01-20 1990-07-27 Babcock Hitachi Kk 固体還元剤を用いた脱硝装置
US4987513A (en) * 1989-04-12 1991-01-22 Shelley Edwin F Apparatus and method for selectively delaying the connection of an electrical supply voltage to an electrical load
US4997631A (en) * 1990-03-07 1991-03-05 Fuel Tech, Inc. Process for reducing nitrogen oxides without generating nitrous oxide

Also Published As

Publication number Publication date
DE69114503D1 (de) 1995-12-14
WO1992002291A1 (en) 1992-02-20
CA2088576A1 (en) 1992-02-02
EP0495089A1 (en) 1992-07-22
US5240688A (en) 1993-08-31
DE69114503T2 (de) 1996-05-02
WO1992002450A1 (en) 1992-02-20
ATE129925T1 (de) 1995-11-15
US5399325A (en) 1995-03-21
CA2063811C (en) 2000-05-09
CA2063811A1 (en) 1992-02-02
EP0542792A1 (en) 1993-05-26
FI930377A0 (fi) 1993-01-29
AU8297991A (en) 1992-03-02
DE69117163T2 (de) 1996-09-05
ATE134155T1 (de) 1996-02-15
EP0542792B1 (en) 1995-11-08
EP0495089A4 (en) 1993-03-10
DE69117163D1 (de) 1996-03-28
EP0495089B1 (en) 1996-02-14

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