DE69114503T2 - Verfahren zur in-line-hydrolyse von harnstoff. - Google Patents

Verfahren zur in-line-hydrolyse von harnstoff.

Info

Publication number
DE69114503T2
DE69114503T2 DE69114503T DE69114503T DE69114503T2 DE 69114503 T2 DE69114503 T2 DE 69114503T2 DE 69114503 T DE69114503 T DE 69114503T DE 69114503 T DE69114503 T DE 69114503T DE 69114503 T2 DE69114503 T2 DE 69114503T2
Authority
DE
Germany
Prior art keywords
urea
hydrolysate
line hydrolysis
nitrogen oxides
hydrolysis
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.)
Expired - Fee Related
Application number
DE69114503T
Other languages
English (en)
Other versions
DE69114503D1 (de
Inventor
Harpe Thure Von
Reinhard Pachaly
John E Hofmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nalco Fuel Tech GmbH
Original Assignee
Nalco Fuel Tech GmbH
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 GmbH filed Critical Nalco Fuel Tech GmbH
Publication of DE69114503D1 publication Critical patent/DE69114503D1/de
Application granted granted Critical
Publication of DE69114503T2 publication Critical patent/DE69114503T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • 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)

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Analytical Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Health & Medical Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Biomedical Technology (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Treating Waste Gases (AREA)
  • Polyesters Or Polycarbonates (AREA)
  • Cosmetics (AREA)
  • Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)
DE69114503T 1990-08-01 1991-08-01 Verfahren zur in-line-hydrolyse von harnstoff. Expired - Fee Related DE69114503T2 (de)

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/EP1991/001450 WO1992002291A1 (en) 1990-08-01 1991-08-01 Process for the in-line hydrolysis of urea

Publications (2)

Publication Number Publication Date
DE69114503D1 DE69114503D1 (de) 1995-12-14
DE69114503T2 true DE69114503T2 (de) 1996-05-02

Family

ID=24240855

Family Applications (2)

Application Number Title Priority Date Filing Date
DE69114503T Expired - Fee Related DE69114503T2 (de) 1990-08-01 1991-08-01 Verfahren zur in-line-hydrolyse von harnstoff.
DE69117163T Expired - Fee Related DE69117163T2 (de) 1990-08-01 1991-08-01 Stickoxidreduktion mittels eines harnstoffhydrolysats

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE69117163T Expired - Fee Related DE69117163T2 (de) 1990-08-01 1991-08-01 Stickoxidreduktion mittels eines harnstoffhydrolysats

Country Status (8)

Country Link
US (2) US5240688A (de)
EP (2) EP0542792B1 (de)
AT (2) ATE129925T1 (de)
AU (1) AU8297991A (de)
CA (2) CA2063811C (de)
DE (2) DE69114503T2 (de)
FI (1) FI930377A0 (de)
WO (2) WO1992002291A1 (de)

Families Citing this family (77)

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ATE157901T1 (de) * 1992-02-10 1997-09-15 Man Nutzfahrzeuge Ag Vorrichtung zur katalytischen nox-reduktion
TW229225B (de) * 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
WO1996006672A1 (en) * 1994-08-26 1996-03-07 Us Sulfamate, Inc. Molten urea dehydrate derived compositions
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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
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
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
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
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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
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US7985280B2 (en) * 2007-02-20 2011-07-26 Hitachi Power Systems America, Ltd. Separation of aqueous ammonia components for NOx reduction
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EP2190781A2 (de) * 2007-08-24 2010-06-02 Powerspan Corp. Verfahren und vorrichtung zur herstellung von ammoniumcarbonat aus harnstoff
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ES2377899T3 (es) * 2008-07-29 2012-04-03 Powerspan Corp. Uso de espectroscop�?a raman para controlar las concentraciones de carbonato/bicarbonato.
US8562929B2 (en) 2010-04-02 2013-10-22 Ohio University Selective catalytic reduction via electrolysis of urea
AU2011235087B2 (en) * 2010-04-02 2014-04-24 Ohio University 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 (de) * 2014-04-01 2015-10-07 Inergy Automotive Systems Research (Société Anonyme) System mit Zersetzungseinheit zur Verwendung an Bord eines Fahrzeugs
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
US11511239B2 (en) 2020-04-29 2022-11-29 Faurecia Emissions Control Technologies, Usa, Llc Heated flash-boiling doser with integrated helix
US11092054B1 (en) 2020-04-29 2021-08-17 Faurecia Emissions Control Technologies, Usa, Llc Flash-boiling doser with thermal transfer 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
CN112661172A (zh) * 2020-12-23 2021-04-16 中国华电科工集团有限公司 一种scr脱硝尿素非均相催化水解制氨的系统及方法
CN114405450A (zh) * 2022-02-23 2022-04-29 西安热工研究院有限公司 一种填料式的尿素催化水解装置
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

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Also Published As

Publication number Publication date
EP0495089B1 (de) 1996-02-14
EP0495089A1 (de) 1992-07-22
DE69114503D1 (de) 1995-12-14
US5399325A (en) 1995-03-21
ATE134155T1 (de) 1996-02-15
CA2063811C (en) 2000-05-09
FI930377A (fi) 1993-01-29
EP0542792B1 (de) 1995-11-08
CA2088576A1 (en) 1992-02-02
FI930377A0 (fi) 1993-01-29
US5240688A (en) 1993-08-31
EP0495089A4 (en) 1993-03-10
WO1992002450A1 (en) 1992-02-20
CA2063811A1 (en) 1992-02-02
EP0542792A1 (de) 1993-05-26
WO1992002291A1 (en) 1992-02-20
ATE129925T1 (de) 1995-11-15
DE69117163D1 (de) 1996-03-28
AU8297991A (en) 1992-03-02
DE69117163T2 (de) 1996-09-05

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