DE2329197A1 - METHOD AND DEVICE FOR REMOVING NITROGEN OXIDES FROM EXHAUST GASES - Google Patents

METHOD AND DEVICE FOR REMOVING NITROGEN OXIDES FROM EXHAUST GASES

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Publication number
DE2329197A1
DE2329197A1 DE2329197A DE2329197A DE2329197A1 DE 2329197 A1 DE2329197 A1 DE 2329197A1 DE 2329197 A DE2329197 A DE 2329197A DE 2329197 A DE2329197 A DE 2329197A DE 2329197 A1 DE2329197 A1 DE 2329197A1
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separator
exhaust gases
nitrogen oxides
chamber
expansion
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DE2329197C3 (en
DE2329197B2 (en
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Katashi Aoi
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    • 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
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2882—Catalytic reactors combined or associated with other devices, e.g. exhaust silencers or other exhaust purification devices
    • 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
    • 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
    • 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
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
    • F01N3/0231—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using special exhaust apparatus upstream of the filter for producing nitrogen dioxide, e.g. for continuous filter regeneration systems [CRT]
    • 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
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/037—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of inertial or centrifugal separators, e.g. of cyclone type, optionally combined or associated with agglomerators
    • 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
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/038—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of perforated plates defining expansion chambers associated with condensation and collection chambers, e.g. for adiabatic expansion of gases and subsequent collection of condensed liquids
    • 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
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/04—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust using liquids
    • 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
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
    • F01N3/2013—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating using electric or magnetic heating means
    • 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
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2882—Catalytic reactors combined or associated with other devices, e.g. exhaust silencers or other exhaust purification devices
    • F01N3/2889—Catalytic reactors combined or associated with other devices, e.g. exhaust silencers or other exhaust purification devices with heat exchangers in a single housing
    • 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
    • F01N2250/00—Combinations of different methods of purification
    • F01N2250/02—Combinations of different methods of purification filtering and catalytic conversion
    • 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

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Toxicology (AREA)
  • Biomedical Technology (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Treating Waste Gases (AREA)
  • Gas Separation By Absorption (AREA)

Description

Verfahren und Vorrichtung zum Entfernen von Stickoxiden aus AbgasenMethod and device for removing nitrogen oxides from exhaust gases

Die Erfindung bezieht sich auf ein Verfahren zum Entfernen von Stickoxiden aus Abgasen sowie auf eine Vorrichtung zum Durchführen des Verfahrens.The invention relates to a method of removal nitrogen oxides from exhaust gases and a device for carrying out the method.

Stickoxide tragen bekanntlich in sehr starkem Maße zu der als fotochemischer Smog bekannten Form der Luftverschmutzung in städtischen Bereichen bei. Die Ursache für das Entstehen von fotochemischem Smog liegt wahrscheinlich im Vorhandensein von aromatischen Kohlenwasserstoffen wie Benzol und Toluol im «$fiOÄJ-ft*, aufgrunddessen die Verbren-It is well known that nitrogen oxides contribute to a very large extent to the form of air pollution known as photochemical smog in urban areas. The cause of the formation of photochemical smog is likely in the presence of aromatic hydrocarbons such as benzene and toluene in the "$ fiOÄJ-ft *, due to which the combustion

309881/ 1 Uo 2 309881/1 Uo 2

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Bank, München )Ί TViTS ■ PoitK*.f:xkonro Mienen 4Λ?'2Bank, Munich ) Ί TViTS ■ PoitK * .f: xkonro Mienen 4Λ? '2

nungsabgase dann Stickoxide wie NO, NO2 und Ν^Ο^ enthalten, sowie in den bei verschiedenen industriellen Verfahren gebräuchlichen Stickstoffspülungen. Das aufgrund seiner instabilen chemischen Eigenschaften eine besonders gefährliche Komponente der Luftverschmutzung darstellende Stickstoffmonoxid (NO) ist darüber hinaus auch besonders schwierig zu beseitigen.tion exhaust gases then contain nitrogen oxides such as NO, NO 2 and Ν ^ Ο ^, as well as in the nitrogen purging commonly used in various industrial processes. Nitrogen monoxide (NO), which is a particularly dangerous component of air pollution due to its unstable chemical properties, is also particularly difficult to remove.

Ein wichtiges Ziel der Erfindung besteht darin, ein Verfahren zum Entfernen von Stickoxiden aus Abgasen sowie eine Vorrichtung zum Durchführen des Verfahrens zu schaffen.An important object of the invention is to provide a method for removing nitrogen oxides from exhaust gases and an apparatus for carrying out the method.

Bei'einem Verfahren der genannten Art ist erfindungsgemäß vorgesehen, daß die Stickoxide enthaltenden heißen Abgase durch eine Katalysatorsäule geleitet werden, in v/elcher der gesamte Anteil von Stickstoffmonoxid in den Stickoxiden in Stickstoffdioxid und/oder -trioxid umgewandelt wird, daß die Abgase unter Zyklonwirkung, Expansion und Ausfilterung von Staubteilchen mittels eines wärmebeständigen Materials durch einen Abscheider geleitet werden und daß dabei im Abscheider eine Waschflüssigkeit, etwa Wasser oder eine NaOH-Lösung versprüht wird, um damit die Stickoxide in Form von in der Flüssigkeit gebundenen Nitratresten und Nitrationen aus dem Abscheider auzutragen.Bei'einem method of the type mentioned is according to the invention provided that the containing hot exhaust gases from nitrogen oxides are passed through a catalyst column, is converted into v / hich the total proportion of nitrogen monoxide in the nitrogen oxides into nitrogen dioxide and / or trioxide, that the exhaust gases under cyclone effect , Expansion and filtering of dust particles by means of a heat-resistant material are passed through a separator and that a washing liquid, such as water or an NaOH solution, is sprayed in the separator in order to remove the nitrogen oxides in the form of nitrate residues and nitrate ions bound in the liquid from the separator to carry out.

Eine Vorrichtung der genannten Art ist gemäß der Erfindung gekennzeichnet durch eine vom unteren Ende her mit Abgasen beschickbare, eine Heizkammer und eine Katalysatorkammer umgebende Katalysatorsäule, durch einen eine Expansions- kammer, eine Kondensationskammer und eine Filterkammer aufweisenden Abscheider, in welchem die Abgase einer Zyklonwirkung, Expansion und Ausfilterung von Staubteilchen mittels eines wärmebeständigen Materials unterworfen sind, durch eine im Abscheider angeordnete Düse zum Versprühen von Wasser oder einer NaOH-Lösung und durch eine im unte ren Teil des Abscheiders angeordnete Abflußleitung zum Aus tragen der verunreinigten Flüssigkeit aus dem Abscheider.A device of the kind referred to is characterized according to the invention chamber by a loadable from the lower end with exhaust gases, a heating chamber and a catalyst chamber surrounding catalyst column by an expansion, a condensation chamber and a filter chamber having separator in which the exhaust gases of a cyclone effect, Expansion and filtering of dust particles by means of a heat-resistant material are subject to, through a nozzle arranged in the separator for spraying water or an NaOH solution and through a discharge line arranged in the unte Ren part of the separator to carry off the contaminated liquid from the separator.

309881/1082309881/1082

73291977329197

Im folgenden ist ein Ausführungsbeispiel der Erfindung anhand der Zeichnung beschrieben, deren einzige Figur eine Schnittansicht der Vorrichtung zeigt.In the following an embodiment of the invention is described with reference to the drawing, the only figure Figure 3 shows a sectional view of the device.

Eine Katalysatorsäule 1 hat an ihrem unteren Teil einen Abgaseinlaß 2 und einen in eine Heizkammer 3 und eine Katalysatorkammer M- unterteilten Innenraum. In der Heizkanuner 3 ist ein Heizkörper 5 eingesetzt, und die Katalysatorkammer M- enthält einen Katalysator 6, etwa Aktivkohle. Bei der Durchströmung der Katalysatorsäule 1 werden alle Stickoxide zu NOp oder NO, umgewandelt, worauf die Abgase einem an die Katalysatorkammer M- angeschlossenen Abscheider 7 zuströmen.A catalyst column 1 has at its lower part an exhaust gas inlet 2 and an interior divided into a heating chamber 3 and a catalyst chamber M-. In the Heizkanuner 3 a heating element 5 is used, and the catalyst chamber M contains a catalyst 6, such as activated carbon. When flowing through the catalyst column 1, all nitrogen oxides are converted to NOp or NO, whereupon the exhaust gases flow to a separator 7 connected to the catalyst chamber M-.

Im Abscheider 7 werden die Abgase durch Ausfiltern, Entschwefelung und Verflüssigung gereinigt. Dabei findet eine Zyklonwirkung, Expansion und der Entzug von Staubteilchen mittels eines Filtermaterials in der gleichen Weise Anwendung, wie bei einer in den Japanischen Patentschriften A-56 190 und zt-79 358 beschriebenen Abgasreinigungsvorrichtung. Der Innenraum des Abscheiders 7 ist in eine Expansionskammer a, eine Kondensationskammer b und wenigstens eine Filterkammer c unterteilt und in Axialrichtung von einem perforierten Verbindungsrohr 8 durchsetzt. Innerhalb des Verbindungsrohrs 8 verlauf in Axialrichtung ein Kühlungs- und Lüftungsrohr 9 zur Verbesserung der Wirksamkeit des Abscheiders. Zum Durchblasen des Belüftungsrohrs 9 mit Luft ist ein Gebläse 10 vorgesehen. Eine im Abscheider angeordnete Düse 11 dient zum Versprühen von Wasser oder eine NaOH-Lösung zum Beseitigen der Stickoxide. Beim Durchgang der Abgase durch die Kammern a, b und c des Abscheiders werden NOp, NO, sowie verflüssigte Bestandteile der Abgase in dem Wasser bzw. der NaOH-Lösung gelöst, worauf dieses bzw. diese über ein Ablaßrohr 12 abgeführt und in einem Behälter I3 gesammelt wird. Auf ihrem Weg über den Abscheider 7 zum Behälter 13 sind die Stickoxide in Form von Nitrationen und Nitrafcresten inIn the separator 7, the exhaust gases are cleaned by filtering, desulfurization and liquefaction. A cyclone effect, expansion and the removal of dust particles by means of a filter material are used in the same way as in an exhaust gas cleaning device described in Japanese patents A-56 190 and z t-79 358. The interior of the separator 7 is divided into an expansion chamber a, a condensation chamber b and at least one filter chamber c and is penetrated by a perforated connecting pipe 8 in the axial direction. A cooling and ventilation pipe 9 runs in the axial direction within the connecting pipe 8 to improve the effectiveness of the separator. A blower 10 is provided for blowing air through the ventilation pipe 9. A nozzle 11 arranged in the separator is used to spray water or an NaOH solution to remove the nitrogen oxides. When the exhaust gases pass through chambers a, b and c of the separator, NOp, NO and liquefied components of the exhaust gases are dissolved in the water or the NaOH solution, whereupon this or these are discharged via a drain pipe 12 and into a container I3 is collected. On their way via the separator 7 to the container 13, the nitrogen oxides are in the form of nitrate ions and nitrate residues

der Flüssigkeit gelöst.dissolved in the liquid.

309881/1082309881/1082

73291977329197

Bei dem erfindungsgemäßen Verfahren bzw. in der Vorrichtung für dessen Durchführung wird also das in den zuvor erhitzten Abgasen enthaltene Stickstoffmonoxid beim Durchgang durch die Katalysatorsäule in NOp und NO^ umgewandelt, worauf das so behandelte Abgas unter Zyklonwirkung, Expansion und Ausfilterung von Staubteilchen mittels eines hitzebeständigen Materials den Abscheider durchströmt, während in diesem Wasser oder eine NaOH-Lösung versprüht wird. Dabei gehen die Stickoxide in Form von Nitratresten und Nitrationen in der Flüssigkeit in Lösung und werden in dieser Form aus dem Abscheider ausgetragen. Das Verfahren überwindet somit die bisher bei der Beseitigung von Stickoxiden aus Abgasen aufgetretenen Schwierigkeiten und ermöglicht ein sicheres Abscheiden der Oxide. Die Erfindung trägt somit wirksam zur Verringerung der Lüftverschnutzung bei. Die erfindungsgemäße Vorrichtung weist den Vorteil eines einfachen Aufbaus sowie geringer --Herstellungskosten auf.In the method according to the invention or in the device for carrying it out, the previously heated Nitrogen monoxide contained in exhaust gases is converted into NOp and NO ^ when passing through the catalyst column, whereupon the exhaust gas treated in this way under cyclone action, expansion and filtering of dust particles by means of a heat-resistant material flows through the separator, while in this water or a NaOH solution is sprayed. The nitrogen oxides go into solution in the form of nitrate residues and nitrate ions in the liquid and are discharged from the separator in this form. The method thus overcomes the hitherto involved in elimination difficulties encountered by nitrogen oxides from exhaust gases and enables the oxides to be deposited safely. The invention thus makes an effective contribution to reducing air pollution. The device according to the invention has the advantage of a simple structure and low manufacturing costs.

309381/1082309381/1082

Claims (2)

Patentansprüche:Patent claims: 1. Verfahren zum Entfernen von Stickoxiden aus Abgasen, dadurch gekennzeichnet, daß die Stickoxide enthaltenden heißen Abgase durch eine Katalysatorsäule geleitet werden, in v/elcher der gesamte Anteil von Stickstoffmonoxid in den Stickoxiden zu Stickstoffdioxid und/oder -trioxid umgewandelt wird, daß die Abgase unter Zyklonwirkung,. Expansion und Ausfilterung von Staubteilchen mittels einer wärmebeständigen Materials durch einen Abscheider geleitet werden und daß dabei im Abscheider eine Waschflüssigkeit, etwa Wasser oder eine NaOH-Lösung, versprüht wird, um damit die Stickoxide in Form von in der' Flüssigkeit gebundenen Nitratresten und Nitrationen aus dem Abscheider auszutragen.1. Process for removing nitrogen oxides from exhaust gases, characterized in that the hot exhaust gases containing nitrogen oxides are passed through a catalyst column are passed, in v / elcher the entire proportion of nitrogen monoxide in the nitrogen oxides to nitrogen dioxide and / or trioxide is converted that the exhaust gases under cyclone action ,. Expansion and filtering out of dust particles by means of a heat-resistant material through a Separator are passed and that doing so in the separator a washing liquid, such as water or an NaOH solution, is sprayed in order to remove the nitrogen oxides in the form of in the 'liquid-bound nitrate residues and nitrate ions to be discharged from the separator. 2. Vorrichtung zum Entfernen von Stickoxiden aus Abgasen unter Anwendung eines Verfahrens nach Anspruch 1, gekennzeichnet durch eine vom unteren Ende (2) her mit Abgasen beschickbare, eine Heizkammer (3) und eine Katalysatorkammer (4) enthaltende Katalysatorsäule (1), durch einen eine Expansionskammer (a) eine Kondensationskammer (b) und eine Filterkammer (c) aufweisenden Abscheider (7), in welchem die Abgase einer Zyklonwirkung, Expansion und Ausfilterung von Staubteilchen mittels eines wärmebeständigen Materials unterworfen sind, durch eine im Abscheider angeordnete Düse (11) zum Versprühen von V/asser oder einer NaOH-Lösung und durch eine im unteren Teil des Abscheiders angeordnete Abflußleitung (12) zum Austragen der verunreinigten Flüssigkeit aus dem Abscheider.2. Device for removing nitrogen oxides from exhaust gases using a method according to claim 1, characterized by a heating chamber (3) that can be charged with exhaust gases from the lower end (2) and a catalyst column (1) containing a catalyst chamber (4), through an expansion chamber (a) Condensation chamber (b) and a filter chamber (c) having separator (7) in which the exhaust gases of a Subjected to cyclonic action, expansion and filtering out of dust particles by means of a heat-resistant material are, through a nozzle (11) arranged in the separator for spraying V / water or a NaOH solution and through a discharge line (12) arranged in the lower part of the separator for discharging the contaminated liquid from the separator. 30988 1/108230988 1/1082 LeerseiteBlank page
DE19732329197 1972-06-10 1973-06-07 Device for removing nitrogen oxides from exhaust gases Expired DE2329197C3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP47057314A JPS4917366A (en) 1972-06-10 1972-06-10
JP5731472 1972-06-10

Publications (3)

Publication Number Publication Date
DE2329197A1 true DE2329197A1 (en) 1974-01-03
DE2329197B2 DE2329197B2 (en) 1975-10-23
DE2329197C3 DE2329197C3 (en) 1976-08-12

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105298680A (en) * 2015-11-12 2016-02-03 瑞昌哥尔德发电设备(无锡)制造有限公司 Heat recovery device used for diesel generating set

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105298680A (en) * 2015-11-12 2016-02-03 瑞昌哥尔德发电设备(无锡)制造有限公司 Heat recovery device used for diesel generating set

Also Published As

Publication number Publication date
GB1396839A (en) 1975-06-04
FR2187397A1 (en) 1974-01-18
DE2329197B2 (en) 1975-10-23
FR2187397B1 (en) 1976-11-12
JPS4917366A (en) 1974-02-15

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