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WO2009030382A1 - Procédé et dispositif de purification des gaz d'échappement - Google Patents

Procédé et dispositif de purification des gaz d'échappement Download PDF

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Publication number
WO2009030382A1
WO2009030382A1 PCT/EP2008/006938 EP2008006938W WO2009030382A1 WO 2009030382 A1 WO2009030382 A1 WO 2009030382A1 EP 2008006938 W EP2008006938 W EP 2008006938W WO 2009030382 A1 WO2009030382 A1 WO 2009030382A1
Authority
WO
WIPO (PCT)
Prior art keywords
exhaust gas
cleaning liquid
branch pipe
pressure vessel
liquid
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.)
Ceased
Application number
PCT/EP2008/006938
Other languages
German (de)
English (en)
Inventor
Carsten Lund Jensen
Johan Kalthoft
Martin LAMBERT SØRENSEN
Peter Skjoldager
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.)
Myssen Hoegh Martin
MAN Energy Solutions Filial af MAN Energy Solutions SE
Original Assignee
Myssen Hoegh Martin
MAN Diesel and Turbo Filial af MAN Diesel and Turbo SE
MAN Diesel Filial af MAN Diesel SE
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 Myssen Hoegh Martin, MAN Diesel and Turbo Filial af MAN Diesel and Turbo SE, MAN Diesel Filial af MAN Diesel SE filed Critical Myssen Hoegh Martin
Publication of WO2009030382A1 publication Critical patent/WO2009030382A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
    • B01D47/02—Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour over or through a liquid bath
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
    • B01D47/06—Spray cleaning
    • 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
    • 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
    • F01N13/004—Exhaust or silencing apparatus characterised by constructional features specially adapted for marine propulsion, i.e. for receiving simultaneously engine exhaust gases and engine cooling water
    • 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
    • F01N3/005—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for draining or otherwise eliminating condensates or moisture accumulating in the apparatus
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/30—Sulfur compounds
    • B01D2257/302—Sulfur oxides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/40—Nitrogen compounds
    • B01D2257/404—Nitrogen oxides other than dinitrogen oxide
    • 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
    • B01D53/77—Liquid phase processes
    • 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
    • F01N2590/00—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines
    • F01N2590/02—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines for marine vessels or naval applications
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/02—EGR systems specially adapted for supercharged engines
    • F02M26/04—EGR systems specially adapted for supercharged engines with a single turbocharger
    • F02M26/05—High pressure loops, i.e. wherein recirculated exhaust gas is taken out from the exhaust system upstream of the turbine and reintroduced into the intake system downstream of the compressor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/14—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system
    • F02M26/15—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system in relation to engine exhaust purifying apparatus
    • 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 method and a device for purifying exhaust gas for at least one large engine, in particular two-stroke large diesel engine.
  • a further object of the present invention is to provide an apparatus for carrying out the method according to the invention, which is simple in construction and enables the achievement of optimum process results.
  • This provides a method of purifying exhaust gas in a large engine, in particular, two-stroke large diesel engine, in proposal, wherein the exhaust gas to be cleaned first flows through a spray zone and contacted there with a cleaning liquid, in which case the spray treatment zone leaving the volume flow of exhaust gas and sprayed cleaning liquid is passed through a cleaning liquid bath wherein the rising from the cleaning liquid exhaust gas Making a change of direction
  • the fine droplets of cleaning liquid sprayed and atomized into the spraying zone capture and bind the solid particles contained in the exhaust gas and the gases which can be leached out of the exhaust gas.
  • the container receiving the cleaning fluid receives permanent supply of liquid from the spray zone, resulting in a permanent renewal of the contents of the container and a reliable discharge of the impurities absorbed.
  • the measures according to the invention can therefore expect a high degree of purification.
  • An advantageous embodiment of the method according to the invention can consist in that the spray treatment zone leaving exhaust gas and droplets of the cleaning liquid is introduced into a cleaning liquid provided below a gas- and liquid-permeable damming element and from there spills out a cleaning liquid present above the damming element.
  • a device for purifying exhaust gas in a large engine, in particular two-stroke large diesel engine in proposal which has a pressure vessel which has an exhaust gas inlet and an exhaust outlet and is provided with at least one communicating with the exhaust gas inlet manifold from which an arrangement with one or a plurality of, in each case a partial flow associated branch nozzle going down, each of which is associated with at least one spray nozzle for spraying a cleaning liquid and each projecting into at least one associated, upwardly open pan, the open lower ends of the branch pipe each associated with a flow deflection effecting valve body is, wherein the troughs each have a penetrated by the branch pipe intermediate bottom, which as a gas and liquid-permeable storage element with a plurality of distributed over its surface passages for the pending on its underside Mixture of exhaust gas and the cleaning liquid is formed and bounded by the exhaust gas cleaning liquid bath down, and wherein the rising from the cresbad exhaust gas is passed with at least one deflection on the manifold over to the
  • the branch pipe associated valve body advantageously allow a uniform Actuation of all branch pipes and at the same time cause a directional deflection from the vertical to the horizontal direction, which ensures a good distribution of the effluent from the branch pipe mixture of exhaust gas and droplets of cleaning liquid on the entire cross section of the associated tub.
  • This process takes place in an advantageous manner below the gas- and liquid-permeable, planar stowage element. A large part of the droplets loaded with impurities is already absorbed by the cleaning liquid filling present below the damming element.
  • the exhaust gas and the remainder of the droplets are in the form of a pillow, etc. on the underside of the storage element and passes through the plurality of small, distributed over the surface of the baffle passages in the form of small bubbles or beads or as eddy current in the above the baffle element intended cleaning fluid bath, which absorbs the remaining droplets.
  • the damming element and the exhaust gas that penetrates or penetrates the latter prevent the cleaning fluid bath from sinking. From the exhaust gas rising from the cleaning liquid bath, the entrained droplets are separated by changing the direction. Subsequently, the purified exhaust gas is guided past the distributor pipe or the distributor pipes and heated in this way.
  • An expedient embodiment of the parent device may consist in that the distributor tube or the distributor tubes is or are arranged in the upper region of the pressure vessel below the upwardly outgoing exhaust gas outlet. This favors the automatic heating of the purified exhaust gas flowing to the exhaust outlet.
  • valve body is adjustable relative to the lower end of the respective associated branch pipe. This allows a precise adjustment of the available flow cross-section and thus a very accurate Homogenization of the flow through all branches, so that the same treatment conditions result in the associated tubs.
  • each branch pipe is assigned a separate tub.
  • the juxtaposition of several small individual tubs also allows a good utilization of the available space and at the same time results in the case of installation of the cleaning device in a ship a large allowable inclination angle.
  • each row of transversely to the container axis juxtaposed branch piece expediently be assigned to a partitioned by intermediate walls in individual tubs tub cassette, the intermediate walls may be useful provided above the intermediate floor with overflow openings. This ensures that fluctuations in the fluid supply of a tub can be compensated by the overflow of the adjacent tub or tubs.
  • the troughs suitably have a lower fluid outlet and upper overflow edges, over which excess cleaning fluid can flow off and the impurities contained therein can be removed.
  • the liquid outlet is expediently dimensioned in such a way that less liquid flows through it than meets via the assigned branch pipe, so that the upper overflow edges are always flushed over.
  • a level monitoring is hereby advantageously superfluous.
  • a further advantageous embodiment of the higher-level measures may consist in the fact that at a distance above the trays deflecting plate which is penetrated by the branch stubs, whose side edges are bounded by the adjacent container walls, lateral flow passages.
  • the rising from the tub exhaust gas is laterally through the deflector distracted and thus diverted.
  • the exhaust gas contained liquid droplets are thereby forced outward due to the centrifugal forces acting on it and can be deposited in this way.
  • it can be attached to the lateral container walls above the Umlenkschilds catch drip attached.
  • exhaust gas quality advantageously facilitates exhaust gas recirculation, ie an admixture of exhaust gas to the charge air supplied to the engine, whereby the NO x emissions can be reduced.
  • the device according to the invention can therefore be integrated into an exhaust gas recirculation device and acted upon by recirculatable exhaust gas.
  • FIG. 2 shows a cross section along the line II / II in FIG. 1,
  • FIG. 3 shows the lower region of a branch pipe with an associated tank in section
  • FIG. 4 shows a functional diagram of the device according to the invention
  • FIG. 5 shows a tray arrangement, inclined relative to the horizontal, of a tray arrangement according to the invention, e.g. installed on a ship
  • FIG. 6 is a schematic representation of a two-stroke large diesel engine with exhaust gas recirculation and purification and
  • Figure 7 is a schematic representation of a two-stroke large diesel engine with a built-in exhaust line cleaning device.
  • Main field of application of the present invention are large engines, especially two-stroke large diesel engines, such as those used as marine propulsion.
  • the exhaust gas purification device on which FIGS. 1 and 2 are based consists of a barrel-shaped pressure vessel 1, which is accommodated on a support frame 1a provided with feet.
  • the pressure vessel 1 has an end face arranged exhaust inlet 2 and an outgoing upward
  • Exhaust outlet 3 and is provided at the bottom with a water outlet 4.
  • the barrel-shaped pressure vessel 1 consists of a cylindrical central part, which is closed by two frontally flanged lid.
  • the exhaust gas inlet 2 is arranged in the upper region of a frontal lid.
  • At least one, preferably a plurality of portholes 5 are provided in the region of the central part and / or the cover, via which the processes in the interior of the pressure vessel 1 can be observed from the outside.
  • an arrangement with at least one horizontal distribution pipe 7 is provided, which extends approximately over the length of the central part of the pressure vessel 1 and communicates with the exhaust gas inlet 2.
  • several, here three parallel juxtaposed distribution pipes 7 are provided which via a connected to the exhaust inlet 2, provided with a corresponding number of connecting piece distributor piece 8 with the exhaust inlet 2 are connected.
  • From each manifold 7 go several, distributed over its length, vertical branch pipe 9 from below, each receiving a partial flow of the associated distribution pipe 7 exhaust gas flow rate.
  • the branch nozzles 9, which descend from the three distributor tubes 7, are each arranged in the form of rows extending transversely to the container axis.
  • the branch pipe 9 are associated with spray nozzles 10, which can be acted upon with a cleaning liquid.
  • the cleaning liquid may conveniently be water, also salt water or brackish water, with or without the addition of chemicals.
  • the spray nozzles 10 are expediently designed as atomizer nozzles, which atomize the supplied cleaning liquid into very fine, small droplets, so that together with the branch pipe 9 supplied exhaust gas results in a mist or aerosol.
  • the spray nozzles 10 are arranged in the upper region of the respective associated branch pipe 9.
  • each branch pipe can be assigned a plurality of radial spray nozzles.
  • each branch pipe 9 is associated with a centrally disposed spray nozzle 10, which is attached to the lower end of a lance 11 passing through the associated distributor pipe 7.
  • the lances 11 are connected in a manner not shown here, for example via a common supply line, with a cleaning liquid source.
  • Trays 12 are placed below the branch stubs 9 into which the branch stubs 9 protrude with their lower open ends, as best seen in FIG.
  • Each branch pipe 9 is expediently associated with a separate tank 12, wherein the a series of the above-mentioned type, juxtaposed branch pipe 9 associated tubs 12, as shown in Figure 2 can be seen to be connected to a width of the interior 6 continuous cassette 13 can.
  • the open lower end of the branch pipe 9 is in each case a valve body 14th assigned, which is appropriately adjustable.
  • the adjustable valve body 14 is, as best seen in Figure 3, taken on a coaxial with the associated branch pipe 9 rod 15 which is attached at its upper end to at least one attached to the inner wall of the associated branch pipe 9 strut 16.
  • the rod 15 may be formed as a threaded rod on which the associated valve body 14 fixing nuts 17 are screwed, by means of which an adjustment of the valve body 14 is possible.
  • the top of the valve body 14 is, as can be seen further in FIG. 3, formed as a surface of revolution formed by a concave downwardly curved generatrix, so that in cross-section downwardly concave flanks are formed, which form a curved transition from the vertical direction to the horizontal direction ,
  • a deflection of the branch pipe 9 in the vertical direction flowing through the volumetric flow is effected in the horizontal direction, from the branch pipe 9 exiting distributed accordingly in the horizontal direction in the respective associated trough 12.
  • the troughs 12 are in each case through an interposed by the associated branch pipe 9 intermediate bottom 18 in a lower compartment 19, in which the associated branch pipe 9 opens with its lower, open end and in which the valve body 14 is located, and an upper compartment 20 divided.
  • 20 cleaning fluid is present both in the lower compartment 19 and in the upper compartment.
  • Each tray 12 accordingly includes a two-part through the intermediate bottom 18 cleaning liquid bath.
  • the intermediate bottom 18 is formed as a gas- and liquid-permeable, sheet-like storage element containing a plurality of distributed over its area, narrow passages between the lower compartment 19 and the upper compartment 20 and, accordingly, between the lower and upper part of the makes crampkeitsbads.
  • the stowage element forming the intermediate bottom 18 may be formed as a single-layer or multi-layer grid and / or network of a close-meshed grid or net, or wire mesh or expanded metal or as a similar permeable structural element or structural element packet arrangement, eg of metal and / or plastic foam.
  • the intermediate bottom 18 is, as Figure 3 further reveals, supported at the edge on trough-fixed support strips 21 and fixed by means of a the associated branch piece 9 comprehensive and by screws 22 thereto fixed sleeve 23 from above.
  • a suitable height spacer arrangement 21a e.g. inform of resting on the support strips 21 strips or a resting on the support strips 21 frame, etc. may be provided.
  • Distance element arrangement allows the position of the intermediate bottom 18 relative to the lower end of the associated branch pipe 9 to adjust exactly.
  • the distribution pipes 7 are acted upon with exhaust gas, which, as indicated in Fig. 4 by arrows, is distributed to the branch pipe 9.
  • the spray nozzles 10 are supplied with cleaning liquid, expediently in the form of water, which is finely atomized, so that very fine droplets are formed and in the branch pipe 9 a mist or aerosol is formed.
  • the solid contained in the exhaust gas Contaminants that form condensation nuclei, by the droplets of the cleaning liquid, here the water droplets, detected and carried by them.
  • the leachable gases contained in the exhaust gas are washed out of the water droplets and carried by them.
  • the exhaust gas with the rest of the water droplets are in the form of a pad 25 on the underside of the baffle formed by the intermediate bottom 18 and pass through the fine passages of the baffle in the upper compartment 20, wherein the still passing water droplets are absorbed by the existing cleaning liquid there and the exhaust gas bubbles upwards in the form of fine bubbles or beads 26, the residual impurities remaining in the exhaust gas being captured by the cleaning liquid and passing into it.
  • the liquid filling of the tubs 12 receives in the form of sprayed from the spray nozzles 10 cleaning liquid constant supply
  • the tubs 12 are accordingly provided with a bottom-side drain opening 27, which is expediently arranged at the lowest point of the inclined tank bottom.
  • the drain opening 27 is dimensioned so that can run over this less cleaning fluid replenishment comes.
  • the from the tubs 12 down effluent or overflowing over the overflow edges 28 cleaning liquid is collected in the lower region of the interior 6 of the pressure vessel 1 and flows through the downwardly outgoing outlet 4 from.
  • the rising in the upper compartment 20 rotates considerably and, as indicated in Figure 4 by arrows, from the makes crampkeitsbad upwardly exiting, three-stage purified exhaust gas is deflected above the troughs 12 to cause one.
  • a deflector plate 29 penetrated by the branching stubs 9 with a degree of freedom of movement is arranged whose side edges form gap-shaped, lateral flow passages 30 with the adjacent side walls of the pressure vessel 1.
  • the rising from the trays 12 exhaust gas is accordingly guided along the underside of the deflector 29 approximately horizontally radially outward and deflected there.
  • the deflector shield 29 is expediently located at the middle height of the barrel-shaped pressure vessel 1, where the largest clear width is present, so that the exhaust gas is guided back in through the wall of the pressure vessel 1 after the said lateral flow passages 30, which causes the deflecting effect even stronger. Due to the deflection water droplets carried by the exhaust are thrown radially outward and run along the wall of the pressure vessel 1 downwards. In order to ensure that no water droplets can be entrained up to the exhaust outlet 3, drip catch strips 31 projecting inwards from the wall inside of the pressure vessel 1 are provided above the flow passages 30. These are expediently inclined downwards.
  • the exhaust gas passing through the flow passages 30 flows close to the wall to the distribution pipes 7 to the exhaust gas outlet 3.
  • Liquid level in the associated tub 12 is, as is clearly apparent from Figure 5.
  • the cassettes arranged one behind the other in the direction of the container axis may expediently be spaced apart from one another.
  • the intermediate walls 32 are expediently provided in the region between the upper side of the intermediate bottom 18 and its upper edge with overflow openings 33, via which a fluid exchange between adjacent trays can take place. This ensures that, regardless of the supply of liquid in all juxtaposed trays in about the same liquid level is achieved.
  • the position of the overflow openings 33 is chosen so that even in the case of the greatest inclination acting as a damming intermediate shelf 18 is covered over the entire surface with cleaning fluid and accordingly also the open lower end of the branch pipe 9 is flooded over the entire surface, as Figure 5 shows clearly.
  • the cassettes 13 are, as Figure 2 further shows, provided with lateral support strips 34, which are provided on the container side support bars 35 can be placed.
  • the support strips 34 and / or the support strips 35 may be arranged to be adjustable in height, so that the immersion depth of the branch pipe 9 is also adjustable.
  • Figures 6 and 7 show application examples of the above-described multi-stage exhaust gas purification device.
  • a preferred application is the purification of exhaust gas used for exhaust gas recirculation, ie of exhaust gas added to reduce the NO x and / or SO x emission of an engine, the fresh charge air supplied to this engine.
  • exhaust gas used for exhaust gas recirculation ie of exhaust gas added to reduce the NO x and / or SO x emission of an engine, the fresh charge air supplied to this engine.
  • an indicated in the form of a cylinder large engine in the form of a two-stroke large diesel engine 36 is shown.
  • the outgoing from the working space of the cylinder, controllable by an exhaust valve outlet 37 opens into a cylinder over all exhaust manifold 38.
  • inlet slots 39 are provided, through which the working space with lowered piston charge air is supplied.
  • the engine is associated with an exhaust gas turbocharger 40, the turbine is operated with exhaust gas and the compressor supplies the pre-compressed charge air. Accordingly, the turbine of the exhaust gas turbocharger 40 is connected via an exhaust pipe 41 with the exhaust manifold 38. From the output of the compressor, a charge air line 42 leads to the inlet slots 39. The charge air is admixed with exhaust gas.
  • the exhaust gas cleaning device indicated by the pressure vessel 1 is integrated to purify the exhaust gas.
  • only the part of the exhaust gas is cleaned, which is used for recirculation.
  • each internal combustion engine is assigned in each case a single, own device according to the invention for exhaust gas purification. It would also be conceivable to assign a common device for exhaust gas purification according to the invention to an arrangement of several internal combustion engines. It would also be conceivable for an internal combustion engine to assign several devices according to the invention for exhaust gas purification. Another possibility is to deviate from the embodiments according to FIGS. 6 and 7 only to use the purified exhaust gas for exhaust gas recirculation and to blow out the remaining part as an exhaust gas. This applies to both on-board and stationary installations.

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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)
  • Ocean & Marine Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

L'invention concerne un procédé et un dispositif de purification des gaz d'échappement de moteur. D'excellents résultats sont atteints grâce aux caractéristiques suivantes : les gaz d'échappement à purifier sont tout d'abord amenés au contact de fines gouttelettes d'un liquide purification, pulvérisées par des pulvérisateurs (10). Le débit volumique ainsi formé de gaz d'échappement et de liquide de purification pulvérisé est ensuite introduit dans le compartiment inférieur (19), contenant du liquide de purification, d'une cuve divisée par un fond intermédiaire (18) servant d'élément de retenue perméable aux gaz et aux liquides, puis le liquide de purification également prévu dans le compartiment supérieur (20) de la cuve (12) est aspergé. Les gaz d'échappement ascendants depuis le liquide de purification prévu dans le compartiment supérieur (20) sont libérés par changement directionnel des gouttelettes éventuellement entraînées du liquide de purification, puis ils sont de préférence chauffés. Les impuretés solides entraînées par les gaz d'échappement ainsi que les gaz lavables sont interceptés par les gouttelettes du liquide de purification pulvérisé, qui sont ensuite absorbées par le liquide de purification contenu dans les compartiments (19, 20) de la cuve (12).
PCT/EP2008/006938 2007-08-30 2008-08-23 Procédé et dispositif de purification des gaz d'échappement Ceased WO2009030382A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007040934A DE102007040934A1 (de) 2007-08-30 2007-08-30 Verfahren und Vorrichtung zur Reinigung von Abgas
DE102007040934.8 2007-08-30

Publications (1)

Publication Number Publication Date
WO2009030382A1 true WO2009030382A1 (fr) 2009-03-12

Family

ID=39939642

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107854945A (zh) * 2017-12-05 2018-03-30 中国华电科工集团有限公司 一种烟气净化系统
US10391174B2 (en) 2009-07-10 2019-08-27 Nanobiotix Metallic nanoparticles, preparation and uses thereof
CN114111364A (zh) * 2021-12-22 2022-03-01 四川都钢钢铁集团股份有限公司 电炉抽烟除尘系统

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009010808B3 (de) * 2009-02-27 2010-08-19 Man Diesel Filial Af Man Diesel Se, Tyskland Verfahren und Vorrichtung zur Reinigung von Motorabgas
JP5787500B2 (ja) * 2010-08-24 2015-09-30 三菱重工業株式会社 エンジン排気ガス浄化装置及び船舶
DE102012009315B4 (de) 2012-05-10 2021-04-22 MAN Energy Solutions, branch of MAN Energy Solutions SE, Germany Verbrennungsmotor
US9387438B2 (en) 2014-02-14 2016-07-12 Tenneco Automotive Operating Company Inc. Modular system for reduction of sulphur oxides in exhaust
DE102016012887A1 (de) 2016-10-28 2018-05-03 Maximilian Notar Verfahren zur Partikelfilterung aus Abgasen oder Raumluft
FR3070872B1 (fr) * 2017-09-14 2022-01-14 Psa Automobiles Sa Dispositif de recuperation de particules du systeme de freinage d’un vehicule automobile
CN111659205B (zh) * 2020-07-08 2024-07-19 付韵雯 一种气体清洗装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4368060A (en) * 1977-08-29 1983-01-11 Chiyoda Chemical Engineering & Construction Co., Ltd. Gas sparging method
DE4315217A1 (de) * 1993-05-07 1994-11-10 Ruhrthaler Maschinenfabrik Gmb Vorrichtung zum Reinigen und Kühlen der Abgase eines Verbrennungsmotors im Untertagebetrieb
EP0712655A1 (fr) * 1994-06-13 1996-05-22 Chiyoda Corporation Tube de dispersion gazeuse pour barbotage de gaz dans liquide, procede de barbotage gaz dans liquide et dispositif utilisant ce procede
EP1230969A1 (fr) 1999-09-24 2002-08-14 Nasa Auto Purificateur de gaz d'echappement
US20040255779A1 (en) * 2001-11-30 2004-12-23 Andrew Trivett Method and apparatus for scrubbing gases, using mixing vanes
WO2007057573A1 (fr) * 2005-11-18 2007-05-24 Lab Sa Laveur pour l'epuration de gaz d'echappement d'un moteur diesel, son procede de mise en oeuvre, et vehicule marin correspondant

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990000437A1 (fr) * 1988-07-15 1990-01-25 Geier Henninger Kurt Procede et dispositif de purification de gaz d'echappement
WO2004067926A1 (fr) * 2003-01-31 2004-08-12 Aktina Limited Dispositif d'elimination de particules dans un diesel

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4368060A (en) * 1977-08-29 1983-01-11 Chiyoda Chemical Engineering & Construction Co., Ltd. Gas sparging method
DE4315217A1 (de) * 1993-05-07 1994-11-10 Ruhrthaler Maschinenfabrik Gmb Vorrichtung zum Reinigen und Kühlen der Abgase eines Verbrennungsmotors im Untertagebetrieb
EP0712655A1 (fr) * 1994-06-13 1996-05-22 Chiyoda Corporation Tube de dispersion gazeuse pour barbotage de gaz dans liquide, procede de barbotage gaz dans liquide et dispositif utilisant ce procede
EP1230969A1 (fr) 1999-09-24 2002-08-14 Nasa Auto Purificateur de gaz d'echappement
US20040255779A1 (en) * 2001-11-30 2004-12-23 Andrew Trivett Method and apparatus for scrubbing gases, using mixing vanes
WO2007057573A1 (fr) * 2005-11-18 2007-05-24 Lab Sa Laveur pour l'epuration de gaz d'echappement d'un moteur diesel, son procede de mise en oeuvre, et vehicule marin correspondant

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10391174B2 (en) 2009-07-10 2019-08-27 Nanobiotix Metallic nanoparticles, preparation and uses thereof
CN107854945A (zh) * 2017-12-05 2018-03-30 中国华电科工集团有限公司 一种烟气净化系统
CN114111364A (zh) * 2021-12-22 2022-03-01 四川都钢钢铁集团股份有限公司 电炉抽烟除尘系统

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