WO1994002720A1 - Gas cleaning device with a filter - Google Patents

Gas cleaning device with a filter Download PDF

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Publication number
WO1994002720A1
WO1994002720A1 PCT/EP1993/001948 EP9301948W WO9402720A1 WO 1994002720 A1 WO1994002720 A1 WO 1994002720A1 EP 9301948 W EP9301948 W EP 9301948W WO 9402720 A1 WO9402720 A1 WO 9402720A1
Authority
WO
WIPO (PCT)
Prior art keywords
cleaning device
gas cleaning
gas
carrier
hollow body
Prior art date
Application number
PCT/EP1993/001948
Other languages
German (de)
French (fr)
Inventor
Bernhard Nibbrig
Helmut Stuhler
Original Assignee
Bernhard Nibbrig
Helmut Stuhler
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 Bernhard Nibbrig, Helmut Stuhler filed Critical Bernhard Nibbrig
Publication of WO1994002720A1 publication Critical patent/WO1994002720A1/en

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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
    • B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
    • B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
    • B01D53/9445—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC]
    • B01D53/9454—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC] characterised by a specific device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/30—Particle separators, e.g. dust precipitators, using loose filtering material
    • 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
    • B01D53/8643—Removing mixtures of carbon monoxide or hydrocarbons and nitrogen oxides
    • B01D53/8646—Simultaneous elimination of the components
    • B01D53/8653—Simultaneous elimination of the components 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
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
    • 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
    • F01N3/0211—Arrangements for mounting filtering elements in housing, e.g. with means for compensating thermal expansion or vibration
    • 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
    • F01N3/0217—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 the filtering elements having the form of hollow cylindrical bodies
    • 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
    • F01N3/022—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 characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
    • F01N3/0224—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 characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous the structure being granular
    • 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
    • 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
    • F01N3/027—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 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
    • 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
    • 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
    • F01N2330/00—Structure of catalyst support or particle filter
    • F01N2330/08—Granular material
    • 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

Definitions

  • the invention relates to a gas cleaning device with a filter.
  • a gas cleaning device of the type mentioned is known from DE-A-37 05 705.
  • two solid catalysts are arranged at a distance from one another, which are followed by a heat exchanger and a reaction vessel.
  • the condensate in the heat exchanger is neutralized in the reaction vessel.
  • a gas cleaning device is to be created with which, inter alia, difficult to destroy pollutants can be removed from gases and catalytically broken down into harmless substances.
  • the object is achieved by a device having the features specified in the characterizing part of claim 1.
  • the invention is equally suitable for the cleaning of landfill gases, odor-laden gases from exhausts from, for example, smokers, aroma-containing hydrocarbon-containing gases from exhausts from the commercial area, exhaust gases from tunnel kilns in the burnout phase, from smoldering gases in wood-burning systems and as Soot filter, especially for stationary diesel engines. Operating temperatures from 300 to 1350 ° C are possible.
  • Figure 1 cut the gas cleaning device.
  • Figure 2 shows the section II - II of Fig. 1.
  • FIG. 3 cut an alternative to the gas cleaning device of FIG. 1
  • FIG. 4 shows a gas cleaning device with two filter modules connected in series.
  • the device acc. Fig. 3 is preferably used at pressures that are on the raw gas
  • REPLACEMENT LEAF side are larger than on the clean gas side (e.g. diesel vehicles).
  • the clean gas side e.g. diesel vehicles.
  • a filter module 9 is arranged, which consists of a carrier 2 made of porous, heat-resistant, electrically insulating material.
  • a heatable metal mesh 3 is arranged on the carrier 2.
  • the inner surface of the porous carrier material and / or the metal mesh 3 can be provided with a catalytically active layer (not shown).
  • the catalytically active layer can consist of metal oxides or noble metals.
  • the raw gas containing contaminated and oxidizable substances passes through the raw gas inlet 1 into the housing 11 (FIG. 3) or directly into the cavity of the porous carrier 2 (FIG. 1). From the housing 11, the raw gas flows through the optionally heatable metal mesh 3 and the carrier 2 into the cavity of the carrier 2 and from there to the clean gas outlet 10. If the raw gas flows from the raw gas inlet 1 directly into the cavity of the carrier 2, it flows from there through the Carrier 2 and the metal mesh 3 into the housing 11 and to the clean gas outlet 10. When passing through the porous carrier 2 and the metal mesh 3, between the oxidizable substances of the raw gas and the optionally catalytically coated inner surface of the porous carrier 2 and / or of the metal fabric 3 an interaction. If catalytic layers are present, self-sustaining low-temperature oxidation occurs at 300 ° C
  • REPLACEMENT LEAF flameless combustion
  • the energy generated by the oxidation of the pollutants in the raw gas can be used thermally.
  • the respective operating temperature (target temperature) of the gas cleaning device can be determined with a temperature sensor 7.
  • the measured value of the temperature sensor 7 can be used to regulate the energy supply 6 for heating the metal mesh 3.
  • the regulation avoids jumps in temperature or local increases in temperature.
  • a heat excess or deficit (deficit) caused by different raw gas compositions can be corrected.
  • An additional ionization device 8 with the electrodes 4, 5 enables the transport of, for example, poorly degradable polymers in the raw gas to the hot metal mesh 3 and the carrier 2 or the formation of ozone.
  • the radial structure of the gas cleaning device enables a homogeneous field of action of the metal mesh 3 and the porous carrier 2.
  • a cascade arrangement (FIG. 4) of several filter modules 9, optionally with different catalytic coatings, is possible without significant pressure loss, so that pollutants are selectively optimal in this way let it filter out. 12 indicates a relaxation space for the gas.
  • the gas cleaning device is suitable for retrofitting existing systems.
  • the pollutants can be broken down chemocatalytically or thermocatalytically.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Analytical Chemistry (AREA)
  • Biomedical Technology (AREA)
  • Toxicology (AREA)
  • Filtering Materials (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Catalysts (AREA)

Abstract

A gas cleaning device with a filter has, fitted in a housing (11) comprising a raw gas inlet (1) and a pure gas outlet (10), a filter module (9) which consists of a support (2) made of a porous, heat-resistant, electroinsulating material, upon which is arranged a heatable metal fabric (3). The support (2) consists of mutually linked ceramic particles having a substantially spheric and polygonal shape. The support (2) is designed as a hollow body closed on one side. The gas inlet (1) ends in the opening of the hollow body. The opening of the hollow body ends in the gas outlet (10). The heatable metal fabric (3) and/or the porous support (2) are provided with a catalytic layer. Ionizing electrodes (4, 5) are arranged on the gas inlet side (1) and on the gas outlet side (10) of the support (2).

Description

Gasreinigungsvorrichtung mit Filter Gas cleaning device with filter
Die Erfindung betrifft eine Gasreinigungsvorrichtung mit Filter.The invention relates to a gas cleaning device with a filter.
Eine Gasreinigungsvorrichtung der genannten Art ist aus DE-A-37 05 705 bekannt. Im Bypass zum Rauchabgasabzug sind zwei in Abstand von- einander angeordnete Feststoffkatalysatoren angeordnet, denen ein Wär¬ metauscher und ein Reaktionsgefä3 nachgeschaltet ist. Im Reaktionsgefäß wird das im Wärmetauscher anfallende Kondensat neutralisiert.A gas cleaning device of the type mentioned is known from DE-A-37 05 705. In the bypass to the smoke exhaust, two solid catalysts are arranged at a distance from one another, which are followed by a heat exchanger and a reaction vessel. The condensate in the heat exchanger is neutralized in the reaction vessel.
Es soll eine Gasreinigungsvorrichtung geschaffen werden, mit der u.a. schwer zerstörbare Schadstoffe aus Gasen entfernt und zu unschäd¬ lichen Stoffen katalytisch abgebaut werden können.A gas cleaning device is to be created with which, inter alia, difficult to destroy pollutants can be removed from gases and catalytically broken down into harmless substances.
Die Aufgabe wird durch eine Vorrichtung mit den im Kennzeichen des Anspruches 1 angegebenen Merkmalen gelöst.The object is achieved by a device having the features specified in the characterizing part of claim 1.
Vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprü¬ chen angegeben.Advantageous embodiments of the invention are specified in the subclaims.
Die mit der Erfindung erreichten Vorteile sind im wesentlichen in der kompakten Bauweise der Vorrichtung und im Verbrauch von wenigerThe advantages achieved with the invention are essentially in the compact design of the device and in the consumption of less
Energie bei ihrem Betrieb gegenüber herkömmlichen Vorrichtungen zuEnergy when operating over conventional devices
ERSATZBLATT sehen. Sie ermöglicht ferner ein Reduzieren der Absaugleistung von Abgasen, da die Reinigung im wesentlichen autotherm erfolgt und damit Abgaskonzentrationen möglich werden, die bei Verwendung herkömmlicher Vorrichtung zur Explosion neigen. Die Erfindung eignet sich gleicher- maßen für die Reinigung von Deponiegasen, von geruchsbeladenen Gasen aus Absaugungen von beispielsweise Räuchereien, von arotmatisehen Kohlenwasserstoff enthaltenden Gasen aus Absaugungen aus dem gewerb¬ lichen Bereich, von Abgasen aus Tunnelöfen in der Ausbrandphase, von Schwelbrandgasen bei Holzfeuerungen und als Rußfilter für insbesondere stationäre Dieselbrennkraftmaschinen. Es sind Betriebstemperaturen von 300 bis 1350°C möglich.REPLACEMENT LEAF see. It also enables the exhaust power of exhaust gases to be reduced, since the cleaning takes place essentially autothermally, and thus exhaust gas concentrations are possible which tend to explode when using conventional devices. The invention is equally suitable for the cleaning of landfill gases, odor-laden gases from exhausts from, for example, smokers, aroma-containing hydrocarbon-containing gases from exhausts from the commercial area, exhaust gases from tunnel kilns in the burnout phase, from smoldering gases in wood-burning systems and as Soot filter, especially for stationary diesel engines. Operating temperatures from 300 to 1350 ° C are possible.
Im folgenden wird die Erfindung anhand von lediglich einen Aus¬ führungsweg darstellender Zeichnungen näher erläutert.In the following, the invention is explained in more detail with the aid of drawings showing only one embodiment.
Es zeigen:Show it:
Fig. 1 die Gasreinigungsvorrichtung geschnitten;Figure 1 cut the gas cleaning device.
Fig. 2 den Schnitt II - II von Fig. 1;Figure 2 shows the section II - II of Fig. 1.
Fig. 3 eine Alternative zur Gasreinigungsvorrichtung nach Fig. 1 geschnittenFig. 3 cut an alternative to the gas cleaning device of FIG. 1
Fig. 4 eine Gasreinigungsvorrichtung mit zwei in Reihe ge¬ schalteten Filtermodulen.4 shows a gas cleaning device with two filter modules connected in series.
Die Gasreinigungsvorrichtung nach Fig. 1 kommt im wesentlichen für1 comes essentially for
Anwendungen in Betracht, bei denen der Druck auf der Rohgasseite kleiner ist als auf der Reingasseite (z.B. Deponiegas). Die Vorrichtung gem. Fig. 3 wird bevorzugt bei Drucken eingesetzt, die auf der Rohgas-Applications are considered in which the pressure on the raw gas side is lower than on the clean gas side (e.g. landfill gas). The device acc. Fig. 3 is preferably used at pressures that are on the raw gas
ERSATZBLATT seite größer als auf der Reingasseite sind (z.B. Dieselfahrzeuge). Für schwierige Reinigungsprobleme kann es zweckmäßig sein, mehrere Filter¬ module 9 (Fig. 4) hintereinander zu schalten.REPLACEMENT LEAF side are larger than on the clean gas side (e.g. diesel vehicles). For difficult cleaning problems, it can be expedient to connect a plurality of filter modules 9 (FIG. 4) in series.
Im Gehäuse 11 mit dem Rohgaseinlaß 1 und dem Reingasauslaß 10 ist ein Filtermodul 9 angeordnet, der aus einem Träger 2 aus porösen, wärmebeständigen, elektrisch isolierendem Material besteht. Auf dem Träger 2 ist ein beheizbares Metallgewebe 3 angeordnet. Die innere Oberfläche des porösen Trägermaterials und/oder des Metallgewebes 3 kann mit einer katalytisch wirksamen Schicht versehen sein (nicht dar¬ gestellt). Die katalytisch wirksame Schicht kann aus Metalloxiden oder Edelmetallen bestehen.In the housing 11 with the raw gas inlet 1 and the clean gas outlet 10, a filter module 9 is arranged, which consists of a carrier 2 made of porous, heat-resistant, electrically insulating material. A heatable metal mesh 3 is arranged on the carrier 2. The inner surface of the porous carrier material and / or the metal mesh 3 can be provided with a catalytically active layer (not shown). The catalytically active layer can consist of metal oxides or noble metals.
Das verunreinigte und oxidierbare Stoffe enthaltende Rohgas gelangt über Rohgaseinlaß 1 in das Gehäuse 11 (Fig. 3) oder direkt in den Hohl¬ raum des porösen Trägers 2 (Fig. 1). Aus dem Gehäuse 11 strömt das Rohgas durch das gegebenenfalls beheizbare Metallgewebe 3 und den Träger 2 in den Hohlraum des Trägers 2 und von dort zum Reingasaulaß 10. Gelangt das Rohgas vom Rohgaseinlaß 1 direkt in den Hohlraum des Trägers 2, strömt es von dort durch den Träger 2 und das Metallgewebe 3 in das Gehäuse 11 und zum Reingasauslaß 10. Beim Durchgang durch den porösen Träger 2 und das Metallgewebe 3 erfolgt zwischen den oxidier- baren Stoffen des Rohgases und der gegebenenfalls katalytisch beschich¬ teten inneren Oberfläche des porösen Trägers 2 und/oder des Metal1- gewebes 3 eine Wechselwirkung. Sind katalytische Schichten vorhanden wird eine selbsterhaltende Niedrigtemperatur Oxidation bei 300°CThe raw gas containing contaminated and oxidizable substances passes through the raw gas inlet 1 into the housing 11 (FIG. 3) or directly into the cavity of the porous carrier 2 (FIG. 1). From the housing 11, the raw gas flows through the optionally heatable metal mesh 3 and the carrier 2 into the cavity of the carrier 2 and from there to the clean gas outlet 10. If the raw gas flows from the raw gas inlet 1 directly into the cavity of the carrier 2, it flows from there through the Carrier 2 and the metal mesh 3 into the housing 11 and to the clean gas outlet 10. When passing through the porous carrier 2 and the metal mesh 3, between the oxidizable substances of the raw gas and the optionally catalytically coated inner surface of the porous carrier 2 and / or of the metal fabric 3 an interaction. If catalytic layers are present, self-sustaining low-temperature oxidation occurs at 300 ° C
ERSATZBLATT (flammenlose Verbrennung) erreicht. Bei rußbeladenem Rohgas ist eine extherme Verbrennung von Ruß möglich. Die durch die Oxidation der Schadstoffe im Rohgas entstehende Energie kann wärmetechnisch ver¬ braucht werden. Die jeweilige Betriebstemperatur (Solltemperatur) der Gasreinigungsvorrichtung kann mit einem Temperaturfühler 7 ermittelt werden. Der Meßwert des Temperaturfühlers 7 kann zur Regelung der Energiezufuhr 6 für die Heizung des Metallgewebes 3 verwendet werden. Durch die Regelung werden Temperatursprünge oder lokale Temperaturer¬ höhungen vermieden. Ein durch unterschiedliche Rohgaszusammensetzung verursachter Wärmeüberschuß oder -Unterschuß (Defizit) kann damit ausgeregelt werden. Eine zusätzliche Ionisierungseinrichtung 8 mit den Elektroden 4, 5 ermöglicht den Transport von z.B. schwer abbaubaren Polymeren im Rohgas zum heißen Metallgewebe 3 und dem Träger 2 oder die Bildung von Ozon.REPLACEMENT LEAF (flameless combustion) reached. With soot-laden raw gas, an exothermic combustion of soot is possible. The energy generated by the oxidation of the pollutants in the raw gas can be used thermally. The respective operating temperature (target temperature) of the gas cleaning device can be determined with a temperature sensor 7. The measured value of the temperature sensor 7 can be used to regulate the energy supply 6 for heating the metal mesh 3. The regulation avoids jumps in temperature or local increases in temperature. A heat excess or deficit (deficit) caused by different raw gas compositions can be corrected. An additional ionization device 8 with the electrodes 4, 5 enables the transport of, for example, poorly degradable polymers in the raw gas to the hot metal mesh 3 and the carrier 2 or the formation of ozone.
Der radiale Aufbau der Gasreinigungsvorrichtung ermöglicht ein homogenes Wirkungsfeld von Metallgewebe 3 und porösem Träger 2. Eine Kaskadenanordnung (Fig. 4) von mehreren Filtermodulen 9 gegebenenfalls mit jeweils unterschiedlich wirkender katalytischer Beschichtung ist ohne wesentlichen Druckverlust möglich, so daß auf diese Weise sich Schadstoffe selektiv optimal ausfiltern lassen. 12 deutet einen Ent¬ spannungsraum für das Gas an.The radial structure of the gas cleaning device enables a homogeneous field of action of the metal mesh 3 and the porous carrier 2. A cascade arrangement (FIG. 4) of several filter modules 9, optionally with different catalytic coatings, is possible without significant pressure loss, so that pollutants are selectively optimal in this way let it filter out. 12 indicates a relaxation space for the gas.
Auf Grund der modularen Bauweise eignet sich die Gasreinigungsvor- richtung zum Nachrüsten bestehender Anlagen. Der Abbau der Schadstoffe kann chemokatalytisch oder thermokatalytisch erfolgen.Due to the modular design, the gas cleaning device is suitable for retrofitting existing systems. The pollutants can be broken down chemocatalytically or thermocatalytically.
ERSATZBLATT REPLACEMENT LEAF

Claims

Patentansprüche Claims
1. Gasreinigungsvorrichtung mit Filter, dadurch gekennzeichnet, daß in einem Gehäuse (11) mit Rohgaseinlaß (1) und Reingasauslaß (10) ein1. Gas cleaning device with filter, characterized in that in a housing (11) with raw gas inlet (1) and clean gas outlet (10)
Filtermodul (9) angeordnet ist, der aus einem Träger (2) aus porösem, wärmebeständigem, elektrisch isolierendem Material besteht, auf dem ein beheizbares Metallgewebe (3) angeordnet ist.Filter module (9) is arranged, which consists of a carrier (2) made of porous, heat-resistant, electrically insulating material, on which a heatable metal fabric (3) is arranged.
2. Gasreinigungsvorrichtung nach Anspruch 1, dadurch gekenn¬ zeichnet, daß der Träger (2) aus miteinander verbundenen Keramik¬ teilchen besteht, die im wesentlichen kugelförmige und kantige Gestalt aufweisen.2. Gas cleaning device according to claim 1, characterized gekenn¬ characterized in that the carrier (2) consists of interconnected Keramik¬ particles, which have a substantially spherical and angular shape.
3. Gasreinigungsvorrichtung nach Anspruch 1 oder 2, dadurch gekenn¬ zeichnet, daß der Träger (2) als einseitig geschlossener Hohlkörper ausgebildet ist.3. Gas cleaning device according to claim 1 or 2, characterized gekenn¬ characterized in that the carrier (2) is designed as a hollow body closed on one side.
4. Gasreinigungsvorrichtung nach Anspruch 3, dadurch gekennzeich- net, daß der Gaseinlaß (1) in die Öffnung des Hohlkörpers übergeht.4. Gas cleaning device according to claim 3, characterized in that the gas inlet (1) merges into the opening of the hollow body.
ERSATZBLATT REPLACEMENT LEAF
5. Gasreinigungsvorrichtung nach Anspruch 3, dadurch gekennzeich¬ net, daß die Öffnung des Hohlkörpers in den Gasauslaß (10) übergeht.5. Gas cleaning device according to claim 3, characterized gekennzeich¬ net that the opening of the hollow body in the gas outlet (10) passes.
6. Gasreinigungsvorrichtung nach den Ansprüchen 1 bis 3, dadurch gekennzeichnet, daß das beheizbare Metallgewebe (3) und/oder der poröse6. Gas cleaning device according to claims 1 to 3, characterized in that the heatable metal mesh (3) and / or the porous
Träger (2) mit einer katalytisch wirksamen Schicht versehen sind.Support (2) are provided with a catalytically active layer.
7. Gasreinigungsvorrichtung nach einem der Ansprüche 1 bis 6, da¬ durch gekennzeichnet, daß auf der Gaseinlaßseite (1) und der Gasaus- laßseite (10) des Trägers (2) Ionisierungselektroden (4, 5) angeordnet sind.7. Gas cleaning device according to one of claims 1 to 6, da¬ characterized in that on the gas inlet side (1) and the gas outlet side (10) of the carrier (2) ionization electrodes (4, 5) are arranged.
8. Gasreinigungsvorrichtung nach einem der Ansprüche 3 bis 7, da¬ durch gekennzeichnet, daß der Träger (2) mit Stegen versehen ist, auf denen sich das Metallgewebe (3) abstützt.8. Gas cleaning device according to one of claims 3 to 7, da¬ characterized in that the carrier (2) is provided with webs on which the metal mesh (3) is supported.
9. Gasreinigungsvorrichtung nach Anspruch 1 oder 2, dadurch gekenn¬ zeichnet, daß der Träger (2) aus einer Trägerstruktur (Stab - oder Rohrbündel) besteht, auf der das Metallgewebe (3) angeordnet ist.9. Gas cleaning device according to claim 1 or 2, characterized gekenn¬ characterized in that the carrier (2) consists of a support structure (rod or tube bundle) on which the metal mesh (3) is arranged.
10. Gasreinigungsvorrichtung nach Anspruch 1, dadurch gekenn¬ zeichnet, daß der Träger (2) aus 40 bis 85 % kugelförmigen und 15 bis 60 % kantigen Keramikteilchen besteht, die durch eine Glasphase aus Ton, Feldspat oder einer Fritte miteinander verbunden sind.10. Gas cleaning device according to claim 1, characterized gekenn¬ characterized in that the carrier (2) consists of 40 to 85% spherical and 15 to 60% angular ceramic particles, which are connected by a glass phase of clay, feldspar or a frit.
• ATZBLATT • ATZBLATT
PCT/EP1993/001948 1992-07-22 1993-07-22 Gas cleaning device with a filter WO1994002720A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4224172A DE4224172C2 (en) 1992-07-22 1992-07-22 Gas cleaning device
DEP4224172.3 1992-07-22

Publications (1)

Publication Number Publication Date
WO1994002720A1 true WO1994002720A1 (en) 1994-02-03

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ID=6463831

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1993/001948 WO1994002720A1 (en) 1992-07-22 1993-07-22 Gas cleaning device with a filter

Country Status (3)

Country Link
CZ (1) CZ148893A3 (en)
DE (1) DE4224172C2 (en)
WO (1) WO1994002720A1 (en)

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EP0789135A1 (en) * 1996-02-09 1997-08-13 Isuzu Ceramics Research Institute Co., Ltd. Exhaust gas purifier
WO2003058042A1 (en) * 2002-01-12 2003-07-17 Catech Inc. Soot trapping filter and soot reducing device thereof
EP1953355A1 (en) * 2007-01-26 2008-08-06 Virgilio Pianu Muffler filter
CN101444701B (en) * 2008-12-02 2011-02-09 杨杭生 Equipment for removing nitrogen oxides and dioxin in waste gas at low-ash area of burning facility
CN103016106A (en) * 2012-12-21 2013-04-03 浙江工商大学 Reactor and method for filtering composite plasma catalytic treatment diesel engine PMs (particulate matters)
CN104279026A (en) * 2014-09-10 2015-01-14 艾蓝腾新材料科技(上海)有限公司 Motor vehicle tail gas aftertreatment system, filtering device of motor vehicle tail gas aftertreatment system and manufacturing method of filtering device

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DE202005007243U1 (en) * 2005-05-03 2005-08-25 Burkhardt, Armin Particulate filter with variably controlled soot combustion
DE102009011961A1 (en) * 2009-03-10 2010-09-16 Advanced Nuclear Fuels Gmbh Suction device for gases or smoke, in particular welding fume, welding system and associated method
DE102009049732B4 (en) * 2009-10-19 2015-06-03 Alantum Europe Gmbh Metal foam-based filter system for removing hydrocarbons from exhaust air and method for removing hydrocarbons from exhaust air
CN104826486A (en) * 2015-04-15 2015-08-12 成都易态科技有限公司 Double layer flue gas filtering element and making method thereof

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Cited By (7)

* Cited by examiner, † Cited by third party
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EP0789135A1 (en) * 1996-02-09 1997-08-13 Isuzu Ceramics Research Institute Co., Ltd. Exhaust gas purifier
US5820833A (en) * 1996-02-09 1998-10-13 Isuzu Ceramics Institute Co., Ltd. Exhaust gas purifier
WO2003058042A1 (en) * 2002-01-12 2003-07-17 Catech Inc. Soot trapping filter and soot reducing device thereof
EP1953355A1 (en) * 2007-01-26 2008-08-06 Virgilio Pianu Muffler filter
CN101444701B (en) * 2008-12-02 2011-02-09 杨杭生 Equipment for removing nitrogen oxides and dioxin in waste gas at low-ash area of burning facility
CN103016106A (en) * 2012-12-21 2013-04-03 浙江工商大学 Reactor and method for filtering composite plasma catalytic treatment diesel engine PMs (particulate matters)
CN104279026A (en) * 2014-09-10 2015-01-14 艾蓝腾新材料科技(上海)有限公司 Motor vehicle tail gas aftertreatment system, filtering device of motor vehicle tail gas aftertreatment system and manufacturing method of filtering device

Also Published As

Publication number Publication date
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DE4224172C2 (en) 1997-11-20
CZ148893A3 (en) 1994-02-16

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