EP1634030A1 - Dispositif en nid d'abeilles destine au traitement des gaz d'echappement - Google Patents

Dispositif en nid d'abeilles destine au traitement des gaz d'echappement

Info

Publication number
EP1634030A1
EP1634030A1 EP03739840A EP03739840A EP1634030A1 EP 1634030 A1 EP1634030 A1 EP 1634030A1 EP 03739840 A EP03739840 A EP 03739840A EP 03739840 A EP03739840 A EP 03739840A EP 1634030 A1 EP1634030 A1 EP 1634030A1
Authority
EP
European Patent Office
Prior art keywords
channels
honeycomb body
honeycomb
cross
section
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.)
Withdrawn
Application number
EP03739840A
Other languages
German (de)
English (en)
Inventor
Christoph Hagg
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.)
Porzellanfabrik Frauenthal GmbH
Original Assignee
Porzellanfabrik Frauenthal 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 Porzellanfabrik Frauenthal GmbH filed Critical Porzellanfabrik Frauenthal GmbH
Publication of EP1634030A1 publication Critical patent/EP1634030A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/50—Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
    • B01J35/56—Foraminous structures having flow-through passages or channels, e.g. grids or three-dimensional monoliths
    • 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
    • F01N3/08—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
    • F01N3/2803—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support
    • F01N3/2825—Ceramics
    • F01N3/2828—Ceramic multi-channel monoliths, e.g. honeycombs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
    • F23G7/061—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating
    • F23G7/065—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel
    • F23G7/066—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel preheating the waste gas by the heat of the combustion, e.g. recuperation type incinerator
    • F23G7/068—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel preheating the waste gas by the heat of the combustion, e.g. recuperation type incinerator using regenerative heat recovery means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D17/00—Regenerative heat-exchange apparatus in which a stationary intermediate heat-transfer medium or body is contacted successively by each heat-exchange medium, e.g. using granular particles
    • F28D17/02—Regenerative heat-exchange apparatus in which a stationary intermediate heat-transfer medium or body is contacted successively by each heat-exchange medium, e.g. using granular particles using rigid bodies, e.g. of porous material
    • 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
    • F01N2240/10—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 heat accumulator

Definitions

  • the invention relates to a honeycomb body device for thermal exhaust gas treatment.
  • honeycomb bodies are known, for example from EP 0 472 605 B1, which are used as heat storage masses in regenerators in exhaust gas treatment systems. These honeycomb bodies are usually arranged in stacks, with at least two honeycomb bodies aligned with their channels in the direction of the respective gas flow, optionally spaced apart from one another.
  • the known heat storage masses are ceramic honeycomb bodies which are essentially prism-shaped, have channels parallel to the main prism axis with essentially identical channel cross sections, have a specific surface area between 200 and 1000 m 2 / m 3 and a hydraulic diameter between 2 and 12 mm.
  • the honeycomb bodies of the regenerators can have prismatic storage bodies of approximately 0.2-1.0 m, in particular approximately 0.4-0.6 m prism length and approximately 0.1-0.5 m, preferably 0.15 - 0.30 m prism end face side length.
  • the flow profile of the cross section of the heat storage chamber continues across all layers. Zones which are poorly or not at all flowed through in a position facing the inflow side of the gas are subsequently flowed through in the same way as the previous layer due to the aligned arrangement of the channels. The same applies to zones or channels with strong air flow.
  • the continuation of the flow profile through the honeycomb body layers is essentially based on the aligned arrangement of the channels or prisms and an almost continuous laminar flow. The present invention aims to avoid these disadvantages.
  • the invention relates to a honeycomb body device for thermal exhaust gas treatment, in particular for regenerative heat storage, with at least one prism-shaped body made of ceramic, which is provided with a plurality of continuous, straight-line channels opening into the two prism surfaces;
  • This honeycomb body device is characterized according to the invention in that each honeycomb body is traversed over its cross section by longitudinal channels with different channel cross sections. This enables a non-aligned arrangement of the prisms, in particular the individual channels, when stacking a plurality of honeycomb bodies.
  • honeycomb bodies according to the prior art were based above all on the achievement of a uniform flow resistance or pressure loss of the individual channels, in order thereby to achieve a uniform flow.
  • the use of different channel geometries in one and the same honeycomb body can lead to preferential flow through channels with a large cross-section compared to a reduced flow through channels with a small cross-section.
  • the honeycomb bodies of successive layers are preferably rotated relative to one another by 180 °. Characterized in that then channels of larger cross-section of the one honeycomb body layer opposite channels of smaller cross-section of the other honeycomb body layer, there is a compensation of the flow resistance due to the alternating flow through channels of large cross-section with channels of small cross-section.
  • honeycomb bodies of successive layers can alternatively also be aligned with one another. be arranged.
  • two rows of square channels alternate with a row of rectangular channels alternately over the honeycomb body cross section.
  • FIG. 1 shows schematically a honeycomb body according to the invention in cross section; 2 also schematically shows the stacking process; 3 shows the stack arrangement of honeycomb bodies rotated by 180 °, and FIG. 4 shows a schematic longitudinal section through the stacked honeycomb bodies according to FIG. 3.
  • honeycomb body 1 shows a honeycomb body 1 made of a ceramic mass, the honeycomb body being formed by alternating the arrangement of a double row of square channels 2 with a row of rectangular channels 3.
  • the flow area of the double row of square channels 2 should essentially correspond to the flow area of the rectangular channels 3.
  • the design according to the invention can be implemented in extrusion by appropriately “omitting" every fourth cell wall in one axial direction.
  • the axis oriented 90 ° to each has the usual cell wall density.
  • the honeycomb bodies 1 according to the invention have 2N x (N + N / 2) channels 2, 3 in cross section, where N is the number of channels.
  • two layers of honeycomb bodies are stacked at 180 ° in the plane normal to the main prism. reached twisted honeycomb bodies.
  • 2 shows schematically the sliding of two honeycomb bodies 1, 1 'in the direction of arrow P. This results in the described uniform flow over two layers 1, 1'.
  • it is advantageous to divide a gas stream (through a rectangular channel 3) into two partial streams (in two square channels 2 each).
  • mixing within the honeycomb body layers 1, 1 'and at the same time swirling at the transition between two honeycomb layers is achieved.
  • honeycomb bodies 1 rotated by 180 ° are stacked exactly, i.e. in the case of honeycomb bodies aligned with one another, there is a uniform cell pattern over two layers, as is shown in FIG. 3.
  • Fig. 4 shows schematically the flow pattern through two honeycomb layers 1, 1 ', which are rotated by 180 ° against each other.
  • a stream S divides into two half-streams S ', or vice versa, two streams combine to form a stream S.
  • the flow resistance over two layers is the same.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Dispersion Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

L'invention concerne un dispositif en nid d'abeilles destiné au traitement thermique des gaz d'échappement, notamment au stockage de la chaleur de régénération. Ce dispositif comprend au moins un corps en forme de prisme (1) en céramique qui est traversé par une pluralité de canaux (2, 3) rectilignes aboutissant dans les deux surfaces de prisme. Chaque corps en nid d'abeilles présente sur sa coupe transversale des canaux longitudinaux aux sections transversales différentes.
EP03739840A 2003-06-23 2003-06-23 Dispositif en nid d'abeilles destine au traitement des gaz d'echappement Withdrawn EP1634030A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/AT2003/000174 WO2004113816A1 (fr) 2003-06-23 2003-06-23 Dispositif en nid d'abeilles destine au traitement des gaz d'echappement

Publications (1)

Publication Number Publication Date
EP1634030A1 true EP1634030A1 (fr) 2006-03-15

Family

ID=33520096

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03739840A Withdrawn EP1634030A1 (fr) 2003-06-23 2003-06-23 Dispositif en nid d'abeilles destine au traitement des gaz d'echappement

Country Status (2)

Country Link
EP (1) EP1634030A1 (fr)
WO (1) WO2004113816A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2901308B1 (fr) * 2006-05-18 2012-07-13 Peugeot Citroen Automobiles Sa Dispositif de traitement de gaz d'echappement d'un moteur thermique de vehicule automobile
CH706125B1 (de) 2013-01-11 2013-08-30 Techeffekt Anstalt Enthalpieübertrager- und Speicherblock.
DE102015103594B3 (de) * 2015-03-11 2016-03-31 Hoval Aktiengesellschaft Lüftungsgerät und Verfahren zur dezentralen Raumlüftung

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0581190A1 (fr) * 1992-07-25 1994-02-02 HEINRICH GILLET GmbH & CO. KG Dispositif d'épuration catalytique de gaz d'échappement pour moteurs à combustion interne

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54150406A (en) * 1978-05-18 1979-11-26 Nippon Soken Ceramic honeycomb structure
US4521532A (en) * 1984-04-23 1985-06-04 General Motors Corporation Monolithic catalytic converter for improved thermal performance
US5755569A (en) * 1996-02-26 1998-05-26 Koch Engineering Company, Inc. Media for heat exchange columns in regenerative thermal oxidizers
DE10003090A1 (de) * 2000-01-25 2001-07-05 Siemens Ag Durchströmbare Katalysatoranordnung sowie Verwendung der Katalysatoranordnung

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0581190A1 (fr) * 1992-07-25 1994-02-02 HEINRICH GILLET GmbH & CO. KG Dispositif d'épuration catalytique de gaz d'échappement pour moteurs à combustion interne

Also Published As

Publication number Publication date
WO2004113816A1 (fr) 2004-12-29

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