EP1853849A1 - Dispositif et procede de production controlee de nanoparticules de suie - Google Patents

Dispositif et procede de production controlee de nanoparticules de suie

Info

Publication number
EP1853849A1
EP1853849A1 EP06723150A EP06723150A EP1853849A1 EP 1853849 A1 EP1853849 A1 EP 1853849A1 EP 06723150 A EP06723150 A EP 06723150A EP 06723150 A EP06723150 A EP 06723150A EP 1853849 A1 EP1853849 A1 EP 1853849A1
Authority
EP
European Patent Office
Prior art keywords
burner
inert gas
soot particles
cooling
fuel
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Withdrawn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
EP06723150A
Other languages
German (de)
English (en)
Inventor
Claus Wahl
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.)
Deutsches Zentrum fuer Luft und Raumfahrt eV
Original Assignee
Deutsches Zentrum fuer Luft und Raumfahrt eV
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 Deutsches Zentrum fuer Luft und Raumfahrt eV filed Critical Deutsches Zentrum fuer Luft und Raumfahrt eV
Publication of EP1853849A1 publication Critical patent/EP1853849A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/44—Carbon
    • C09C1/48—Carbon black
    • C09C1/50—Furnace black ; Preparation thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/44—Carbon
    • C09C1/48—Carbon black
    • C09C1/52—Channel black ; Preparation thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D99/00—Subject matter not provided for in other groups of this subclass
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L7/00—Supplying non-combustible liquids or gases, other than air, to the fire, e.g. oxygen, steam
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/64—Nanometer sized, i.e. from 1-100 nanometer
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C2203/00—Flame cooling methods otherwise than by staging or recirculation
    • F23C2203/30—Injection of tempering fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2203/00—Gaseous fuel burners
    • F23D2203/10—Flame diffusing means
    • F23D2203/105—Porous plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/00004—Burners specially adapted for generating high luminous flames, e.g. yellow for fuel-rich mixtures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/21—Burners specially adapted for a particular use
    • F23D2900/21007—Burners specially adapted for a particular use for producing soot, e.g. nanoparticle soot
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L2900/00—Special arrangements for supplying or treating air or oxidant for combustion; Injecting inert gas, water or steam into the combustion chamber
    • F23L2900/07002—Injecting inert gas, other than steam or evaporated water, into the combustion chambers

Definitions

  • the invention relates to a device for the controlled production of nano-soot particles, comprising a burner and a mixing device for producing a fuel-oxidizer premix, which is coupled to the burner, so that the premix can be fed thereto.
  • the invention further relates to a method for the controlled production of nano-carbon black particles.
  • soot particles can lead to problems.
  • a soot source of particulate matter must be present.
  • EP 1 055 877 A1 discloses a burner for producing soot, having a combustion chamber to which fuel gas and oxidizing gas can be fed in such a way that a soot particle-generating diffusion flame is formed in the combustion chamber, and with a soot discharge duct with an outlet from the combustion chamber, through which carbon black formed in the combustion chamber can be carried away. It is provided a further confluence in the Rußwegkgtechnisch through which quenching gas can be fed.
  • WO 2004/065494 A1 discloses a soot generator with at least one combustion chamber, in which fuel can be combusted with oxidizing gas in at least one soot-producing flame, and with an extinguishing gas conduit which is connected to the combustion chamber, the extinguishing gas conduit having a constriction , so that a pressure change, in particular a negative pressure can be generated.
  • WO 2004/026969 A2 discloses an apparatus and a method for the controlled production of nano-carbon black particles, the apparatus comprising a pore burner and a mixing device for producing a fuel-oxidizer premix; the mixing device is on
  • the invention has for its object to provide a device and a method for the controlled production of nano-carbon black particles, with or can achieve a high soot particle yield.
  • Soot particles are generated by the combustion of the fuel. In the burner flame but already produced soot particles can also burn. It was therefore proposed in WO 2004/026969 to draw off a partial flow.
  • the burner flame is cooled by the cooling device, so that the combustion of already generated soot particles can be prevented. As a result, a high yield can be achieved, which can be, for example, of the order of 2 g per hour of soot particles with a diameter of 80 nm to 100 nm.
  • the burner flame can be extinguished, in particular in a spatially defined area.
  • a soot particle distribution is then frozen between soot particles produced in the cooler and the burner.
  • Premix can be fed, can be adjusted in a reproducible manner, the mean particle diameter of the nano-carbon black particles produced. It can form a homogeneous Rußnduzone.
  • soot particles can be discharged in a simple manner via a chimney (for example in the form of a stovepipe), which is positioned on the burner.
  • a soot particle-laden aerosol stream can be discharged throughout, so as to again obtain a high yield.
  • the cooling device is arranged at a distance from the burner. This may form a soot forming zone in which soot particles are generated. By means of the cooling device, the subsequent combustion of a large part of the produced soot particles can be prevented.
  • the cooling device is arranged above the burner with respect to the direction of gravity. It can then be removed soot particles in a chimney to the top to be able to perform an application such as a test stand.
  • the cooling device is arranged on a D ⁇ ffusor and / or in the vicinity of a diffuser. Via a diffuser, a soot-laden aerosol stream can be discharged in a simple manner; For example, no pump has to be provided.
  • cooling device is arranged at least partially in a chimney, via which soot particles can be discharged. This ensures effective discharge.
  • One application can deliver an aerosol stream with high soot particle yield.
  • the cooling device is arranged and configured in such a way that the burner flame can be cooled below the combustion temperature of carbon in a predetermined range and, in particular, can be extinguished. This effectively prevents the combustion of generated soot particles. In particular, a soot particle distribution of produced soot particles is frozen.
  • an inert gas can be blown into the burner flame by the cooling device.
  • the inert gas reduces the soot particle concentration and reduces the oxidizer concentration. This leads to a cooling; in particular, the burner flame can be extinguished at the cooling device.
  • inert gas can be blown through the cooling device in a discharge direction of soot particles produced. As a result, the temperature can be further reduced. It can be the aerosol
  • the cooling device has at least one tube, through which inert gas can be guided, wherein the at least one tube has a plurality of openings.
  • About the at least one tube can be easily injected inert gas in a burner flame.
  • the burner flame can be effectively cooled and in particular extinguished.
  • the aerosol can flow past the at least one tube in order to be able to feed the soot-laden aerosol to an application.
  • the at least one tube is arranged parallel to the burner.
  • a cooling of the burner flame can be achieved in a simple and effective manner in order to prevent the burning of soot particles.
  • the openings are positioned in a chimney.
  • inert gas can be injected into the burner flame within the chimney in order to achieve a cooling effect.
  • the cooling device comprises a plurality of tubes, which are connected in a fluid-effective manner with at least one distributor.
  • the cooling device can be formed as a "pipe grid", wherein the at least one distributor provides for the supply of inert gas.
  • a first distributor and a second distributor are provided, between which tubes are arranged.
  • a first distributor and a second distributor are provided, between which tubes are arranged.
  • inert gas can be introduced into a tube from opposite ends via a first distributor and a second distributor.
  • first distributor and a second distributor can be introduced into a tube from opposite ends via a first distributor and a second distributor.
  • the concentration of the soot particles in the aerosol stream can be set in a defined manner via the dilution device.
  • an inert gas is injected into an outlet aerosol stream via the dilution device.
  • the dilution device is in particular controllable and / or controllable.
  • the burner is a pore burner.
  • a pore burner can form a homogeneous combustion zone and thus soot formation zone, the spatial and temporal homogeneity is ge strictlyrieistbar.
  • the combustion zone and thus the soot formation zone can be stably formed and, in turn, nano soot particles of any size can be produced.
  • the mixing ratio By adjusting the mixing ratio, the average diameter of the nano-carbon black particles produced can be adjusted. It is provided in particular that the production of nano-carbon black particles in size and / or concentration is controlled.
  • the bursting device comprises in particular a bursting plate, which, for example
  • t-201 / -280 is formed in the form of a film. It is thus provided a predetermined breaking point such as in the case of an explosion within the fireplace.
  • the bursting device is arranged at an upper end of the chimney.
  • a homogeneous combustion without stoichiometric gradient can be achieved if the mixing device is connected upstream of the burner.
  • a homogeneous Rußsentzone can form, so that in turn nano carbon black particles are formed with a defined size distribution.
  • the mixing device is formed by a mixing section of corresponding length so as to ensure a homogeneous premixing of fuel and oxidizer against access to the burner.
  • the corresponding ratio of fuel and oxidizer in the premix can be easily adjusted if a mass flow controller is provided for adjusting the mass flow of fuel to the mixing device. For the same reason, it is favorable if a mass flow controller is provided for adjusting the mass flow of oxidizer to the mixing device.
  • a mass flow controller is provided for adjusting the mass flow of oxidizer to the mixing device.
  • the stoichiometric ratio can be adjusted.
  • a ratio ⁇ of fuel to oxidizer of greater than 1 a rich mixture is obtained, during which combustion soot particles form.
  • mass flow controller for oxidizer and fuel other flow-limiting elements such as critical nozzles can be used. It can too
  • the burner comprises a distribution space which is coupled to the mixing device and which is delimited by a pore plate. Over a mixing space of the mixing device can then lead in a spatial range, the homogeneous premix of fuel and oxidizer, so as to provide a stable flame formation and thus to a reproducible soot particles.
  • the distribution space is cylindrically formed, since a defined combustion zone can be formed in this way, which can be protected in a simple manner with respect to the lateral penetration of air and the ingress of air from above, in turn also at the edge of the combustion zone To avoid gradients.
  • a distribution space for inert gas is arranged around the distribution space for the fuel-oxidizer mixture. It can then be formed over this distribution space a flow of inert gas (coflow) to the combustion zone, for example in the manner of a ring flow. This flow prevents the lateral entry of air into the combustion zone and thus ensures a homogeneity of the Rußsentzone due to the prevention of the formation of mass ratio gradient.
  • the distribution space for inert gas is ring-shaped, so as to be able to enclose the coflow of inert gas into the combustion zone.
  • inert gas can then be expelled around a combustion zone in order to protect it against the lateral ingress of air.
  • soot particles This characterizes the generated aerosol stream.
  • the analyzer device comprises an electrostatic classifier.
  • an electrostatic classifier the soot particles are charged, for example by a radioactive source, and then undergo an electric field. Their mobility in this electric field (electrostatic mobility) depends on their size. By determining the mobility, for example via a distance determination, the size distribution of the nano-carbon black particles produced can be determined.
  • the analyzer device comprises a condensation particle counter. It is then possible to visually determine a size distribution optically even with soot particles with sizes in the nanometer range.
  • Oxidator mixture is controllable and / or regulated. As a result, an average particle size can be obtained with a specific presetting of .phi.
  • the mixture composition can be controlled and / or regulated as a function of a measured particle size of produced soot particles. Due to the high reproducibility of the soot particle distribution in the controlled production with the device according to the invention, when, for example, soot particles with a certain mean diameter are required for an application, a control loop can be constructed in which the analyzer device measures the particle size distribution and these Values then passes on to the control and / or regulating device. This in turn regulates the mass flows for the mixture formation in such a way that the desired particle size distribution is achieved. As a result, for example, a defined aerosol flow can be adjusted before being fed to an application.
  • the aforementioned object is further achieved according to the invention in that in a method for the controlled production of nano-carbon black particles, a premixed mixture of fuel and oxidizer is burned and a burner flame is cooled below the combustion temperature of carbon.
  • the burner flame is cooled in a spatially defined area. It can be deleted.
  • the method according to the invention has the advantages already explained in connection with the device according to the invention.
  • the cooling takes place in a spatially defined area, it can be ensured that a combustion zone can form with a soot formation zone. Furthermore, the subsequent combustion of generated soot particles will prevent.
  • Figure 1 is a schematic representation of an embodiment of an inventive device for the controlled production of nano-soot particles (soot generator) and
  • FIG. 2 shows a cross-sectional view along the line 2-2 according to FIG. 1.
  • An embodiment of a device according to the invention for the controlled production of nano-carbon black particles which is denoted by 10 in FIG. 1, comprises a burner such as, for example, a pore burner 12 with a
  • a distribution space 16 is formed.
  • This distribution space 16 is cylindrical with an axis 18 and covered by a pore plate 20.
  • the pore plate 20 is provided with pores which allow passage of gas from the distribution space 16 into a combustion zone 22 disposed above the pore plate 20, the gas from the distribution space 16 being uniform across the surface of the pore plate 20 into the combustion zone 22; a backlash of the combustion of the gas in the distribution space 16 is prevented by the pore plate 20.
  • the pore plate 20 is in particular made of a metallic material such as
  • cooling channels are arranged for cooling.
  • the pore plate 20 is formed as a disc having a circular cross section. The diameter is larger than that of the distribution space 16. In addition to the distribution space 16, it also covers an annular space 24 arranged around the distribution space 16, this annular space 24 being separated from the distribution space 16 in a gas-tight manner via an annular wall 26.
  • a flow of an inert gas around the combustion zone 22 can be formed.
  • a feed channel 28 leads into the annular space 24 from a side facing away from the pore plate 20.
  • a mass flow regulator 30 for example, the mass flow of
  • the distribution space 16 is a mixture of a fuel, which may be in particular a gaseous hydrocarbon such as methane, ethane, ethene, ethyne, propane, propene, propyne, butane, butene, butyne, etc., for the production of nano-carbon black particles, and an oxidizer such as air or an oxygen-inert gas mixture supplied. It is also possible to use higher-boiling and, in particular, liquid hydrocarbons, if they have been previously evaporated.
  • a fuel which may be in particular a gaseous hydrocarbon such as methane, ethane, ethene, ethyne, propane, propene, propyne, butane, butene, butyne, etc.
  • an oxidizer such as air or an oxygen-inert gas mixture supplied. It is also possible to use higher-boiling and, in particular, liquid hydrocarbons, if they have been previously evaporated.
  • the pore burner 12 is preceded by a mixing device 34, in which a premix of the fuel and the oxidizer is generated.
  • the mixing device 34 is formed for example by a mixing section of appropriate length, in which fuel and oxidizer can mix.
  • the premix is then coupled via a Zu arrangementsieitung 36 in the distribution space 16 of the porous burner 12, wherein preferably the supply line 36 is connected to a pore plate 20 opposite side of the pore burner 12.
  • a fuel supply 38 and an oxidizer supply 40 are coupled to it to supply the premix to the mixing device 34 in a mixing space 42 produce.
  • the amount of fuel supplied to the mixing device 34 is adjustable via a mass flow controller 44 and the amount of oxidizer supplied to the mixing device 34 is adjustable, for example via a mass flow controller 46.
  • the proportion of the fuel In order to produce nano soot particles in the combustion of the fuel, the proportion of the fuel must be greater than that of the oxidizer, so that the combustion takes place at excess fuel.
  • the corresponding ratio is characterized by the symbol ⁇ .
  • a chimney pipe 48 is arranged to form a chimney 50. Train formation provides stabilization of the combustion flame. About the chimney pipe 48 produced soot particles can be removed.
  • a diffuser 52 is disposed above the pore burner 12.
  • the diffuser 52 is formed by a hollow cone section, for example, which is open at the top.
  • An (imaginary) tip of the corresponding cone lies on the axis 18.
  • Walls 54 of the diffuser 52 abut, for example, on the pore burner 12 at or in the vicinity of the pore plate 20.
  • the annulus 24 has one or more openings 56 (eg, in pore shape) toward the walls 54. It can then flow up inert gas while flowing along the walls 54. This allows a condensation of soot on the walls
  • soot in the combustion zone 22 can be made more homogeneous.
  • the diffuser 52 promotes the stabilization of the burner flame.
  • the pore burner 12 is associated with a cooling device 58. This is at least partially disposed in the chimney pipe 48 at a distance from the pore plate 20.
  • the cooling device 58 serves to cool the burner flame so far that carbon is no longer burned, that is, resulting soot particles are no longer burned. In particular, cooling takes place below a temperature of about 600 ° C. It can be provided that the burner flame at the cooling device 58 is extinguished.
  • the cooling device 58 which is at a distance from the pore plate 20, the fuel-oxidizer mixture can burn in the combustion zone 22 and soot particles are produced.
  • the combustion zone 22 below the cooling device 58 is thus a soot production zone.
  • the cooling device 58 the oxidation of the produced soot particles is prevented.
  • the generated soot particles can be removed via the chimney pipe 48 upwards.
  • An embodiment of a cooling device 58 comprises, as shown in Figure 2, a plurality of spaced tubes 60a, 60b, 60c, 60d, 60e, 60f. These tubes are aligned parallel to each other with a longitudinal direction which is transverse and in particular perpendicular to the axis 18.
  • the tubes 60a, 60b, 60c, 60d, 60e, 60f are coupled via a respective end to a first manifold 62 which serves as a first manifold. Over the opposite other end, they are coupled to a second manifold 64, which serves as a second manifold.
  • a first manifold 62 and the second manifold 64 are positioned parallel to each other.
  • the first manifold 62 and the second manifold 64 are positioned outside the chimney 50.
  • the manifolds 62, 64 are coupled to an inert gas source 68, such as nitrogen or a noble gas ( Figure 1). Inert gas can then be coupled into the distributor pipes 62, 64 via a supply line 70.
  • inert gas source 68 such as nitrogen or a noble gas ( Figure 1).
  • Inert gas can then be coupled into the distributor pipes 62, 64 via a supply line 70.
  • a branch 72 may be provided, via which the inert gas supplied by the source 70 can be divided into a first partial flow 74 and a second partial flow 76 in order to be able to supply inert gas to the first distributor tube 62 or the second distributor tube 64.
  • the branch 72 and the supply line 70 are preferably arranged outside the chimney 50.
  • the first partial flow 74 in the first distributor tube 62 is further divided between the tubes 60a, 60b, 60c, 6Od, 6Oe, 6Of and coupled into them from one end. Accordingly, the second partial stream 76 is further divided at the second distributor pipe 64 and coupled into the latter via the other end of the pipes 60a, 60b, 60c, 60d, 60e, 60f.
  • a coupling-in direction 78 from the first distributor tube 62 into the tubes 60a, 60b, 60c, 60d, 60e, 60f is opposite to a coupling-in direction 80 for the injection of inert gas from the second distributor tube 64 via the opposite end of the tubes.
  • the tubes 60a, 60b, 60c, 60d, 60e, 60f are provided with a plurality of openings 82 through which inert gas can flow out in the chimney pipe 48 and thereby flow into the burner flame in order to cool it and in particular to extinguish it.
  • the tubes 60a, etc. have lateral openings 84 which have a transverse to the axis 18 oriented respective mouth. As a result, inert gas can be blown into the burner flame at least approximately parallel to the pore plate 20.
  • a tube 60a, etc. has transversely opposite lateral openings 84 so as to allow inflow in opposite transverse directions 86a, 86b.
  • cooling device 58 has upwardly open openings 88 ( Figure 1), via the inert gas upwards and for example at least approximately parallel to the axis 18 in the chimney pipe 48th
  • the openings 84 and 88 have a diameter which is in the range between 0.1 mm to 0.4 mm.
  • the tubes 60a, etc., which sit transversely in the chimney pipe 48, are made of stainless steel, for example.
  • the tubes 60a, etc. which sit transversely in the chimney pipe 48, are made of stainless steel, for example.
  • between six and twelve pipes 60a, etc. are provided.
  • a typical diameter of these tubes 60a, etc. is on the order of 3 mm.
  • the chimney pipe 48 is continued above the cooling device 58. It has a decoupling region 90, via which generated soot particles can be discharged.
  • a discharge line 92 which leads to an application, is coupled to the extraction region 90.
  • the application is, for example, an object such as a filter, which is acted upon by the controlled produced soot particles.
  • a bursting device 96 is disposed at a top 94 of the chimney 50. This includes, for example, a bursting plate.
  • the chimney 50 has an opening 98 which is covered by the bursting plate.
  • the bursting plate is formed for example in the form of a film. For example, an explosion in the chimney pipe 58 can take place via the bursting device 96, a corresponding discharge to the outside.
  • a diffuser 100 is arranged in the discharge line 92. Furthermore, provision may be made for a dilution device 102 to be positioned in the discharge line 92, the dilution device 102 being arranged downstream of the diffuser 100 (relative to the flow direction of the aerosol in the discharge line 92). Via the dilution device 102, an inert gas such as nitrogen or a noble gas can be coupled into the aerosol stream in order to be able to adjust the soot particle concentration in the aerosol stream.
  • an inert gas such as nitrogen or a noble gas
  • an aerosol partial stream can be coupled via a line 104 to characterize the aerosol.
  • the aerosol stream can be completely coupled into the line 104.
  • a slide 105 is arranged on the discharge line 92, via which the discharge line 92 can be blocked so that the entire aerosol stream is coupled into the line 104.
  • An analyzer device 106 for measuring the particle size in the aerosol stream discharged via the line 104 may be provided.
  • the analyzer device 106 includes, for example, an electrostatic classifier that characterizes the soot particles according to their electrical mobility.
  • An electrostatic classifier separates the particles according to their size so as to be able to determine the distribution of the particle size with high resolution.
  • electrostatic classifiers are known, for example, under the designation Model 3081 Long DMA from TSI, St. Paul, MN, USA.
  • the monodisperse aerosol generated in the analyzer is fed to a condensation particle counter so that the particle number can be measured for each particle size. By a corresponding scan on the particle sizes can thus determine the size distribution in the soot particle aerosol.
  • SMPS Scanning Mobility Particle Sizer
  • a control and / or regulating device 108 can be provided, via which the mass flow of fuel and oxidizer through the mass flow regulators 44 and 46 and thus the stoichiometry ratio in the premix can be set.
  • the mass flow of inert gas through the annulus 24 by means of the control and / or regulating device 70 via the mass flow controller 30 is adjustable.
  • the dilution via the dilution device 102 is adjustable.
  • the control and / or regulating device 70 serves, in particular in conjunction with the analyzer device 106, to be able to set a specific aerosol flow with a defined soot particle size and soot particle concentration in a control process.
  • the analyzer device 106 indicates its measurement results with respect to the size distribution of the soot particles in the injected aerosol stream
  • control and / or Regelvovo ⁇ chtung 70 can change the mixing ratio of the premix in order to obtain the desired distribution.
  • the control variable is the mixing ratio and in particular ⁇ , wherein this ratio is set via the mass flow controller 44, 46. This control process is controlled by the measurement result of the analyzer device 106.
  • the controller 108 may also control the dilution of the soot particle aerosol stream via the diluter 102 so as to obtain an aerosol stream 110 of a predetermined concentration with particulate matter of predetermined size with a narrow distribution.
  • the analyzer device 106 is used in particular to set a defined aerosol flow 110. After this defined aerosol flow is set relative to an application, an analysis is necessary at most for monitoring purposes. It can be provided that after the defined setting, the slider 105 is opened and the line 104 is closed, so that the aerosol stream 110 is completely supplied to the application.
  • a defined premix of fuel and oxidizer is produced via the mixing device 34, wherein a defined mixture composition and thus defined mass ratios in the mixture are set by setting the corresponding mass flows on the mass flow regulators 44 and 46.
  • the homogenous mixture produced is then conducted via the supply line 36 into the distribution space 16, where it flows via the pore plate 20 over the cross section of the distribution space 16 into the combustion zone 22 and there takes place (when the flame is ignited) combustion.
  • the soot particles are generated substantially in the combustion zone 22 below the cooling device 58.
  • inert gas By injecting inert gas into the burner flame, it is cooled to the cooling device 58 so far that carbon at the cooling device 58 and above the cooling device 58 can not be burned, that is, the soot particles produced in the combustion zone 22 can not be burned , In particular, the burner flame is extinguished at the cooling device 58.
  • the soot particle distribution at the cooling device 58 is effectively "frozen". In turn, it is possible to dissipate the soot particles in high yield up, with essentially all the soot particles produced can be completely removed, that is, no partial flow must be removed by suction.
  • soot particles are decoupled via the decoupling region 90.
  • the aerosol stream in particular with regard to size distribution and concentration, can be set in a defined manner prior to the introduction of a soot-particle-laden aerosol stream into an application.
  • a "pre-flow" is analyzed by analyzer device 10, and then adjustment of fuel and oxidant feed to pore burner 12 and / or adjustment of dilution at diluter 102 when the aerosol stream is set to desired properties Feeding to the application released.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Nanotechnology (AREA)
  • Organic Chemistry (AREA)
  • Composite Materials (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Physics & Mathematics (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)

Abstract

L'invention concerne un dispositif de production contrôlée de nanoparticules de suie comprenant un brûleur (12). On associe à ce brûleur un dispositif de refroidissement (58) permettant de refroidir la flamme du brûleur.
EP06723150A 2005-03-02 2006-03-01 Dispositif et procede de production controlee de nanoparticules de suie Withdrawn EP1853849A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200510010766 DE102005010766A1 (de) 2005-03-02 2005-03-02 Vorrichtung und Verfahren zur kontrollierten Erzeugung von Nano-Rußpartikeln
PCT/EP2006/001852 WO2006092279A1 (fr) 2005-03-02 2006-03-01 Dispositif et procede de production controlee de nanoparticules de suie

Publications (1)

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EP1853849A1 true EP1853849A1 (fr) 2007-11-14

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DE (1) DE102005010766A1 (fr)
WO (1) WO2006092279A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0607851D0 (en) 2006-04-24 2006-05-31 Johnson Matthey Plc Particulate matter generator

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1695759A1 (fr) * 2005-01-31 2006-08-30 Basf Aktiengesellschaft Méthode de production de solides de tailles nanométriques utiliant un bruleur à zone de réaction poreuse

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Publication number Priority date Publication date Assignee Title
US4250145A (en) * 1978-06-08 1981-02-10 Sid Richardson Carbon & Gasoline Co. Carbon black reactor with improved burner
DE2842977A1 (de) * 1978-10-02 1980-04-10 Gefi Gmbh Vorrichtung zur herstellung von russ
DE3722523C1 (en) * 1987-07-08 1988-06-30 Babcock Anlagen Ag Furnace with nozzles for blowing in ammonia for selective noncatalytic flue gas denitration (SNCR)
US5273729A (en) * 1991-05-24 1993-12-28 Massachusetts Institute Of Technology Combustion method for producing fullerenes
WO1995026925A1 (fr) * 1994-03-30 1995-10-12 Massachusetts Institute Of Technology Production de nanostructures de fullerenes dans des flammes
ATE249008T1 (de) * 1999-05-26 2003-09-15 Lianpeng Jing Brenner zum erzeugen von russ
US7279137B2 (en) * 2001-08-30 2007-10-09 Tda Research, Inc. Burners and combustion apparatus for carbon nanomaterial production
JP3926333B2 (ja) * 2001-12-05 2007-06-06 ティーディーエイ リサーチ インコーポレイテッド 液体炭化水素からカーボンナノ材料の合成のための燃焼方法
DE10243307B4 (de) * 2002-09-13 2006-06-08 Deutsches Zentrum für Luft- und Raumfahrt e.V. Vorrichtung und Verfahren zur kontrollierten Erzeugung von Nano-Rußpartikeln
AU2003295469A1 (en) * 2002-11-12 2004-06-03 Microcoating Technologies, Inc. Process for producing carbonaceous materials
EP1590408B1 (fr) * 2003-01-24 2006-12-27 Lianpeng Jing Generateur de suie pourvu d'une conduite de gaz d'extinction retrecie

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1695759A1 (fr) * 2005-01-31 2006-08-30 Basf Aktiengesellschaft Méthode de production de solides de tailles nanométriques utiliant un bruleur à zone de réaction poreuse

Non-Patent Citations (1)

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Title
See also references of WO2006092279A1 *

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DE102005010766A1 (de) 2006-09-07
WO2006092279A1 (fr) 2006-09-08

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