ES475656A1 - Mejoras en un procedimiento y un aparato para controlar los oxidos de nitrogeno en los gases de escape de un equipo de combustion - Google Patents

Mejoras en un procedimiento y un aparato para controlar los oxidos de nitrogeno en los gases de escape de un equipo de combustion

Info

Publication number
ES475656A1
ES475656A1 ES475656A ES475656A ES475656A1 ES 475656 A1 ES475656 A1 ES 475656A1 ES 475656 A ES475656 A ES 475656A ES 475656 A ES475656 A ES 475656A ES 475656 A1 ES475656 A1 ES 475656A1
Authority
ES
Spain
Prior art keywords
gas
oxides
nitrogen oxides
ammonia
exhaust gases
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
Application number
ES475656A
Other languages
English (en)
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.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Publication of ES475656A1 publication Critical patent/ES475656A1/es
Expired 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
    • B01D53/74—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
    • B01D53/8631—Processes characterised by a specific device
    • 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)
  • Environmental & Geological Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Catalysts (AREA)
  • Chimneys And Flues (AREA)

Abstract

Mejoras en un procedimiento y un aparato para controlar los óxidos de nitrógeno en los gases de escape de un equipo de combustión, comprendiendo el procedimiento la reacción de descomposición de los óxidos, en presencia de oxígeno, con amoníaco inyectado en dicho equipo y en los conductos asociados a temperaturas comprendidas entre 700 y 1300ºC .cuya mejora consiste en disponer un sistema catalítico con las superficies catalíticas de las unidades componentes prácticamente paralelas a la dirección de flujo del gas, en una región donde la temperatura del gas después del tratamiento de descomposición está comprendida entre 300 y 500ºC, de manera que dicho gas, después del tratamiento de descomposición, pueda atravesar el sistema catalítico, y opcionalmente introducir un suministro adicional de amoniaco, en una proporción de 0,5 a 1, 5 moles por mol de óxido de nitrógeno en dicho gas, en el espacio inmediatamente anterior al sistema catalítico, acelerando así la descomposición de los óxidos contenidos en el gas a sustancias inofensivas.
ES475656A 1977-12-02 1978-12-01 Mejoras en un procedimiento y un aparato para controlar los oxidos de nitrogeno en los gases de escape de un equipo de combustion Expired ES475656A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14401277A JPS5477277A (en) 1977-12-02 1977-12-02 Method and apparatus for reducing nitrogen oxides in combustion exhaust gas

Publications (1)

Publication Number Publication Date
ES475656A1 true ES475656A1 (es) 1980-02-01

Family

ID=15352257

Family Applications (1)

Application Number Title Priority Date Filing Date
ES475656A Expired ES475656A1 (es) 1977-12-02 1978-12-01 Mejoras en un procedimiento y un aparato para controlar los oxidos de nitrogeno en los gases de escape de un equipo de combustion

Country Status (7)

Country Link
US (1) US4302431A (es)
JP (1) JPS5477277A (es)
CA (1) CA1121981A (es)
DE (1) DE2852769A1 (es)
ES (1) ES475656A1 (es)
FR (1) FR2410787B1 (es)
GB (1) GB2008967B (es)

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JPS5479160A (en) * 1977-12-07 1979-06-23 Hitachi Ltd Denitration method for exhaust gas
US4423017A (en) * 1981-10-29 1983-12-27 Exxon Research And Engineering Co. Process for reducing NO emissions
NL8300587A (nl) * 1982-03-12 1983-10-03 Kali Chemie Ag Werkwijze voor het behandelen van afvoergas.
JPS6155501A (ja) * 1984-08-24 1986-03-20 株式会社日立製作所 排熱回収ボイラ
DE3535312A1 (de) * 1985-10-03 1987-04-09 Didier Eng Verfahren zur senkung des stickoxidgehaltes von abgasen
US4778665A (en) * 1986-09-09 1988-10-18 Mobil Oil Corporation Abatement of NOx in exhaust gases
CH673593A5 (es) * 1986-10-13 1990-03-30 Von Roll Ag
US4874590A (en) * 1988-04-07 1989-10-17 Uop Catalytic reduction of nitrogen oxides
DE3836131A1 (de) * 1988-10-22 1990-04-26 Linde Ag Reaktor zur durchfuehrung von verbrennungsprozessen
US4978514A (en) * 1989-09-12 1990-12-18 Fuel Tech, Inc. Combined catalytic/non-catalytic process for nitrogen oxides reduction
US5139754A (en) * 1989-09-12 1992-08-18 Fuel Tech, Inc. Catalytic/non-catalytic combination process for nitrogen oxides reduction
DE4010566A1 (de) * 1990-04-02 1991-10-10 Krc Umwelttechnik Gmbh Verfahren zur abscheidung von kohlenstoffhaltigen und/oder stickoxidhaltigen schadstoffen in rauchgasen
DE69318433T2 (de) * 1992-01-17 1998-12-17 Mitsubishi Jukogyo K.K., Tokio/Tokyo Verfahren zur Behandlung von Verbrennungsabgasen
CA2088713C (en) * 1992-02-24 1999-11-16 Hans Thomas Hug Cleaning exhaust gases from combustion installations
US5233934A (en) * 1992-08-20 1993-08-10 Wahlco Environmental Systems, Inc. Control of NOx reduction in flue gas flows
US5336471A (en) * 1993-05-19 1994-08-09 Abb Air Preheater, Inc. Support of ceramic catalyst
US5419877A (en) * 1993-09-17 1995-05-30 General Atomics Acoustic barrier separator
US5807526A (en) * 1993-11-05 1998-09-15 Miljevic; Vujo Device for removal of SO2 and NOx from flue gases by high frequency discharge by Tesla coil or other high voltage and high frequency generator
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
DE19705663A1 (de) * 1997-02-14 1998-04-23 Siemens Ag Einrichtung zur Reduktion von Stickoxiden in einem mit Staub beladenen Abgas
US6146605A (en) * 1999-07-26 2000-11-14 Hera, Llc Combined SCR/SNCR process
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
US20020044886A1 (en) * 2000-10-16 2002-04-18 William Larco Vaporization system having blower positioned in reduced temperature zone
US20020159923A1 (en) * 2001-02-26 2002-10-31 Platvoet Erwin M.J. Gas phase reactor and process for reducing nitrogen oxide in a gas stream
US6663839B2 (en) 2001-02-26 2003-12-16 Abb Lummus Global Inc. Radial flow gas phase reactor and method for reducing the nitrogen oxide content of a gas
US6821490B2 (en) * 2001-02-26 2004-11-23 Abb Lummus Global Inc. Parallel flow gas phase reactor and method for reducing the nitrogen oxide content of a gas
US6706246B2 (en) 2001-02-26 2004-03-16 Abb Lummus Global Inc. System and method for the selective catalytic reduction of nitrogen oxide in a gas stream
DE10123402A1 (de) * 2001-05-14 2002-11-28 Fraunhofer Ges Forschung Verfahren zum Behandeln von ammoniakhaltigen Rauchgasen
US7572414B2 (en) * 2001-10-09 2009-08-11 Lummus Technology Inc. Modular system and method for the catalytic treatment of a gas stream
US7393511B2 (en) * 2005-02-16 2008-07-01 Basf Catalysts Llc Ammonia oxidation catalyst for the coal fired utilities
US7638107B1 (en) * 2008-06-11 2009-12-29 Callidus Technologies, LLC Multi-bed selective catalytic reduction system
USD719588S1 (en) 2012-06-29 2014-12-16 Caterpillar Inc. Undercarriage track system for mobile earthmoving machine
USD712935S1 (en) 2012-06-29 2014-09-09 Caterpillar Inc. Undercarriage track shoe for mobile earthmoving machine
USD727974S1 (en) 2012-06-29 2015-04-28 Caterpillar Inc. Undercarriage track roller for mobile earthmoving machine
USD709527S1 (en) 2012-06-29 2014-07-22 Caterpillar Inc. Undercarriage track idler for mobile earthmoving machine
USD751609S1 (en) 2012-06-29 2016-03-15 Caterpillar Inc. Undercarriage track link for mobile earthmoving machine
FR3071871B1 (fr) 2017-09-29 2020-02-07 Continental Automotive France Procede de reduction catalytique selective avec desorption d'ammoniac a partir d'une cartouche dans une ligne d'echappement
JP2023176186A (ja) 2022-05-31 2023-12-13 中外炉工業株式会社 工業用炉の排気システム

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5154871A (ja) * 1974-11-09 1976-05-14 Mitsubishi Chem Ind Nenshohaigasuchunochitsusosankabutsuno bunkaiho
US3441381A (en) * 1965-06-22 1969-04-29 Engelhard Ind Inc Apparatus for purifying exhaust gases of an internal combustion engine
GB1380376A (en) * 1972-03-20 1975-01-15 Chemical Construction Corp Catalytic exhaust gas treatment apparatus
JPS50133995A (es) * 1974-04-11 1975-10-23
JPS5118262A (en) * 1974-08-06 1976-02-13 Japan Gasoline Haigasuchuno chitsusosankabutsuno jokyohoho
JPS5641296B2 (es) * 1974-11-11 1981-09-28
NL167334C (nl) * 1975-01-13 Mitsubishi Chem Ind Werkwijze voor het verwijderen van stikstofoxyden uit een verbrandingsgas, in afwezigheid van een katalysator en in aanwezigheid van een ammoniakbron en zuurstof.
JPS5239568A (en) * 1975-09-25 1977-03-26 Jgc Corp Process for removing dust sticked to inside of reactor
FR2327814A1 (fr) * 1975-10-15 1977-05-13 Hitachi Ltd Procede pour traiter par catalyse un gaz d'echappement renfermant de l'ammoniac gazeux et de l'oxygene gazeux.
JPS5277878A (en) * 1975-12-24 1977-06-30 Ngk Insulators Ltd Method of removing nitrogen oxides from exhaust gases
US4193972A (en) * 1977-11-02 1980-03-18 Uop Inc. Treating particle-containing SOx or NOx gas streams in parallel passage contactors

Also Published As

Publication number Publication date
GB2008967B (en) 1982-09-08
JPS5477277A (en) 1979-06-20
GB2008967A (en) 1979-06-13
CA1121981A (en) 1982-04-20
FR2410787A1 (fr) 1979-06-29
DE2852769A1 (de) 1979-06-28
US4302431A (en) 1981-11-24
FR2410787B1 (fr) 1985-10-18

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19980202