EP2492335B1 - Procédé et dispositif d'homogénéisation d'un mélange de carburant solide dans un liquide - Google Patents

Procédé et dispositif d'homogénéisation d'un mélange de carburant solide dans un liquide Download PDF

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Publication number
EP2492335B1
EP2492335B1 EP12155176.6A EP12155176A EP2492335B1 EP 2492335 B1 EP2492335 B1 EP 2492335B1 EP 12155176 A EP12155176 A EP 12155176A EP 2492335 B1 EP2492335 B1 EP 2492335B1
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EP
European Patent Office
Prior art keywords
mixture
cross
solid fuel
liquid
size distribution
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Application number
EP12155176.6A
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German (de)
English (en)
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EP2492335A1 (fr
Inventor
Ralf Ackermann
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RWE Power AG
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RWE Power AG
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L1/00—Liquid carbonaceous fuels
    • C10L1/32—Liquid carbonaceous fuels consisting of coal-oil suspensions or aqueous emulsions or oil emulsions
    • C10L1/326—Coal-water suspensions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/50—Mixing liquids with solids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/40—Static mixers
    • B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
    • B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
    • B01F25/433—Mixing tubes wherein the shape of the tube influences the mixing, e.g. mixing tubes with varying cross-section or provided with inwardly extending profiles
    • B01F25/4334—Mixers with a converging cross-section
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/40—Static mixers
    • B01F25/44—Mixers in which the components are pressed through slits
    • B01F25/441—Mixers in which the components are pressed through slits characterised by the configuration of the surfaces forming the slits
    • B01F25/4412—Mixers in which the components are pressed through slits characterised by the configuration of the surfaces forming the slits the slits being formed between opposed planar surfaces, e.g. pushed again each other by springs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/40—Static mixers
    • B01F25/44—Mixers in which the components are pressed through slits
    • B01F25/442—Mixers in which the components are pressed through slits characterised by the relative position of the surfaces during operation
    • B01F25/4422—Mixers in which the components are pressed through slits characterised by the relative position of the surfaces during operation the surfaces being maintained in a fixed but adjustable position, spaced from each other, therefore allowing the slit spacing to be varied
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/40—Static mixers
    • B01F25/44—Mixers in which the components are pressed through slits
    • B01F25/442—Mixers in which the components are pressed through slits characterised by the relative position of the surfaces during operation
    • B01F25/4423—Mixers in which the components are pressed through slits characterised by the relative position of the surfaces during operation the surfaces being part of a valve construction, formed by opposed members in contact, e.g. automatic positioning caused by spring pressure
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L9/00—Treating solid fuels to improve their combustion

Definitions

  • the subject of the present invention is a method and an apparatus for homogenizing a mixture of solid fuel in a liquid.
  • the process is particularly preferably used in the homogenization and dispersion of carbon particles in hydrocarbons, such as, for example, a light fuel oil.
  • Liquid hydrocarbons such as light fuel oil are widely used in combustion processes.
  • light fuel oil is often used in homes for heating and heat supply in industry and commerce.
  • Even in the power plant area light fuel oil is used as ignition or support fuel.
  • coal, especially lignite, mixed with fuel oil could be used as fuel for heat production in industry and commerce.
  • the object of the present invention is to at least partially overcome the disadvantages known from the prior art and in particular to provide a method and a device, with which a mixture of a solid fuel in a liquid can be produced, which achieves a high homogeneity with respect to the distribution of the solid particles in the liquid and with respect to the grain size distribution of the solid fuel and with which it is possible to use a non-decombining mixture of solid fuel in To produce liquids.
  • the present invention is a process for homogenizing a mixture of solid fuel in a according to claim 3.
  • the input mixture comprises solid fuel particles dispersed in a liquid.
  • the method according to the invention it is possible to finely disperse these fuel particles, wherein the middle Particle diameter is significantly reduced and the distribution of solid fuel particles in the liquid is made uniform.
  • Preferred is a process control with a pressure of 2000 bar absolute upstream of the cross-sectional constriction and from 5 to 10 bar absolute downstream of the cross-sectional constriction.
  • the cross-sectional constriction is designed so that the flow velocity in the gap is more than 100 m / s [meters per second].
  • cross-sectional constriction is understood to mean that the mixture before it enters the cross-sectional constriction can flow through a cross-section through which is larger than the cross-section through which the cross-sectional constriction can flow.
  • the cross-sectional constriction is understood as meaning a gap through which the mixture must flow.
  • the cross-sectional constriction has a gap of a gap height of less than 1 mm [millimeter], preferably less than 0.5 mm, in particular less than 0.2 mm.
  • the freely flow-through cross section upstream of the cross-sectional constriction, the size of the cross-sectional constriction, ie the freely flow-through cross-section of the cross-sectional constriction and the freely flowable cross-section downstream of the cross-sectional constriction are chosen so that a pressure drop of about 200 to 400 bar absolute upstream of the cross-sectional constriction to 1 to 6 bar absolute downstream of the cross-sectional constriction takes place.
  • the cross-sectional constriction is designed so that the flow of the mixture is directed during or after passage of the cross-sectional constriction against at least one baffle.
  • the flow paths of the mixture are designed so that the mixture, after flowing through the cross-sectional constriction, strikes a baffle element, which further leads to a reduction of the particle diameter.
  • the turbulent flow which arises when passing through the cross-sectional constriction breaks up any laminar or pseudo-laminar flow profiles that may be present, mixing the mixture, thereby achieving homogenization of the particle distribution in the liquid and equalization of the particle size distribution.
  • a solid fuel is understood in particular to mean a carbonaceous solid fuel.
  • the solid fuel is preferably coal, such as lignite, hard coal or charcoal, in particular lignite, preferably in the form of lignite dust or lignite coke.
  • Other possible solid fuels are bitumen, asphalt, tar, peat, xylitol and lignite coke.
  • a hydrocarbon compounds comprising carbon and hydrogen, especially carbon and hydrogen exist.
  • the inventive method in a liquid comprising a plurality of hydrocarbons of different chain lengths. Such liquids occur regularly at certain distillation stages in petroleum refining.
  • the process according to the invention for homogenizing solid fuel, in particular brown coal in so-called light fuel oil has proved to be particularly advantageous.
  • this is light fuel oil according to the German industrial standard DIN 51603. This may include one or more additives in addition to hydrocarbons.
  • a solvent which forms an azeotropic mixture with water is, for example, toluene.
  • an azeotropic mixture is meant a mixture which can not be separated by ordinary distillation.
  • Solvents which form an azeotropic mixture with water can be used for dewatering coal, as these water bound in the coal can be dissolved out. This is equally possible with other solid fuels.
  • An example of such a solvent is toluene.
  • the liquid also contains water, preferably water.
  • water preferably water.
  • foreign components can be dissolved out of the coal in an advantageous manner, which are harmful in the further process for secondary products.
  • alkali metals such as sodium, which are soluble in water, can be dissolved out of the solid fuel particles.
  • the inventive method causes an increase in the total surface area of the solid fuel particles by reducing the diameter and a more uniform distribution of the solid fuel particles in the water, the amount of extraneous foreign matter dissolved significantly improved.
  • the inventive method as a precursor for a demineralization be used, as for example in the DE 10 2004 038 235 A1 is described.
  • the grain size distribution is the probability distribution that indicates the probability of the occurrence of a specific grain size.
  • the expectation value is the value of the grain size, which usually results from frequent sampling.
  • the position of the maximum value of the particle size distribution is understood to be that particle size for which the highest probability is present.
  • the width at half grain size distribution is understood to mean the width of the grain size distribution at half the maximum value of the grain size distribution.
  • the pressure difference across the cross-sectional constriction ie the difference of the pressure upstream and downstream of the cross-sectional constriction can be set so that the expected value and / or the position of the maximum value of the grain size distribution shift towards smaller grain sizes, ie the input mixture an expectation and / or has a position of the maximum value of the particle size distribution which is smaller than the corresponding value of the output particle size distribution.
  • the difference in pressure becomes a downstream position as compared with a position upstream of the cross-sectional constriction the cross-sectional constriction and / or the size of the cross-sectional constriction set so that the width decreases at half the height of the particle size distribution.
  • step 1.c the flow direction of the mixture changes at least once by at least 30 °.
  • the pressure increase or the degree of pressure increase in the promotion in step 1.b is adjustable, for example by appropriate selection and control of the funding.
  • the size of the cross-sectional constriction and / or the pressure build-up before flowing through the cross-sectional constriction can be adjusted advantageously the particle size distribution of the output particle size distribution of the starting mixture. That is, by adjusting the size of the cross-sectional constriction and / or the pressure, the average grain size and / or the width of the grain size distribution of the starting mixture can be variably adjusted. Furthermore, it is thus possible to achieve a distribution of the solid fuel particles in the liquid that corresponds to a specification. It is thus also the homogeneity of the distribution of the particles in the liquid adjustable.
  • the cross-sectional constriction is formed by at least one seat valve.
  • a poppet valve allows, by adjusting the gap size of the valve opening, so the gap between the valve body and the valve seat, a variation of the size of the cross-sectional constriction. This can be achieved by appropriate measures such as a change in the bias of a spring, with which the valve body is pressed against the valve seat or under variation of a back pressure, with which the valve body is pressed against the valve seat. By changing these parameters, the size of the cross-sectional constriction can be set to predefinable values.
  • the solids content of the input mixture is 50 wt .-% and more.
  • the solid fuel is coal, such as lignite or hard coal, and particularly preferably lignite.
  • the Applicant has found that despite the abrasive properties of the coal and the relative hardness of the solid fuel particles with the process of the invention, a good reduction in grain size and good homogenization have been achieved.
  • the solids content of the initial mixture and thus also of the starting mixture is preferably in the range from 50% by weight to 80% by weight, more preferably in the range from 50% by weight to 70% by weight.
  • the input mixture is before or during step 1.a. premixed.
  • a piston pump formed in a housing of the device understood.
  • the use of a piston pump has the advantage over other pumps that the delivery rate of the pump is independent of the pressure.
  • pressures of up to 2,000 bar can be achieved before the cross-sectional constriction.
  • Advantageous are conveying means in which the pressure before the cross-sectional constriction can be increased to 500 bar and more, preferably to 1000 bar and more, and more preferably to 1500 bar and more.
  • the method according to the invention runs with a device according to the invention.
  • the size of the cross-sectional constriction is adjustable by a valve, in particular a seat valve.
  • valve and in particular a poppet valve it is possible to make the size of the cross-sectional constriction easily adjustable and to keep variable in certain areas.
  • a seat valve has been found to be preferred, since there is the cross-sectional constriction through the gap, which results in an open valve between the valve seat and valve body, which can thus be adjusted by changing the pre-tension or opening of the poppet valve necessary force ,
  • Fig. 1 schematically shows an embodiment of an apparatus 1 for homogenizing solid fuel in a liquid.
  • the device 1 comprises a conveying means 2, in the present embodiment a piston pump with a piston 3.
  • the piston 3 is linearly movable in a first direction of movement 4 in a guide channel 5. Due to the movement of the piston 3, a positive or negative pressure is generated in a delivery chamber 6, depending on the direction of movement 4.
  • an input mixture can be conveyed through an inlet 7 into the delivery chamber 6.
  • the input 7 can be reversibly closed by a valve 8.
  • the mixture can be conveyed through a delivery chamber outlet 9.
  • the delivery chamber outlet 9 can be reversibly closed by a corresponding valve 10.
  • the inlet mixture flows toward a cross-sectional constriction 12.
  • This cross-sectional constriction 12 is formed by a seat valve 13, which comprises a valve body 14 and a valve seat 15.
  • the cross-sectional constriction 12 represents an annular gap whose gap height is preferably less than 1 mm [millimeter], more preferably less than 0.5 mm, in particular less than 0.2 mm.
  • the cross-sectional constriction 12 is present as an annular gap between the valve body 14 and the valve seat 15.
  • the flow-through cross section widened again for the stream 11 it comes when flowing through the cross-sectional constriction 12 to an acceleration of the material flow 11 and a subsequent slowing down.
  • the material flow 11 follows the flow path 16. This has two changes in the flow direction.
  • the material flow 11 is pressed against baffles 17, which also act as deflection means 38. These are formed, on the one hand, from the side of the valve body 14 facing the flow and, on the other hand, by the regions of the valve outer body 18 lying next to the valve seat 15. After flowing through the flow path 16 of the material flow 11 is conveyed as output mixture from the output 19.
  • the deflection means 38 thus cause a twice deflection of the flow by 90 °.
  • Fig. 2 1 schematically shows the apparatus 1 for homogenizing a mixture of solid fuel in a liquid in a larger context.
  • a prefeed pump 20 and a premixer 21 are formed upstream of the device 1, a prefeed pump 20 and a premixer 21 are formed.
  • the pre-mixer 21 is a premix of solid fuel, such as lignite dust, with the liquid, such as light fuel oil.
  • a pre-mixer 21 a static mixer or a Zahnkranzdispergator or a mixing vessel with agitator can be used.
  • the prefeed pump 20 conveys the premix as an input mixture from the premixer 21 to the device 1 according to the invention.
  • the prefeed pump 20 may be, for example, a gear pump.
  • FIG. 3 schematically shows a section of a device 1, at which the operating principle and the process control according to the present invention will be explained in more detail.
  • a mixture 22 of solid fuel particles 25 in a liquid 24 is conveyed from the delivery chamber 6 through the delivery chamber exit 9 in the direction of the cross-sectional constriction 12.
  • the solid fuel particles 23 abut against the baffles 17 and are comminuted with each other there as well as with impacts.
  • the cross-sectional constriction 12 is given by the gap between a valve seat 15 and a valve body 14 of a seat valve 13.
  • the size of the cross-sectional constriction 12 can be adjusted in conjunction with the delivery pressure 26.
  • the mixture 22 After flowing through the cross-sectional constriction 12, the mixture 22 has a discharge pressure 27, with which the mixture 22 flows through the outlet 19.
  • the solid fuel particles 23 have a smaller diameter after flowing through the cross-sectional constriction 12.
  • Fig. 4 shows schematically the particle size distribution of the mixture.
  • the input particle size distribution 28 Before passing through the cross-sectional constriction 12, the input particle size distribution 28 is present. After flowing through the cross-sectional constriction 12, the output particle size distribution 29 is present. Shown in each case is the probability P of the occurrence of a grain size d, both in each case given in relative units.
  • the input grain size distribution 28 has a maximum value which is present at a position 31.
  • the output grain size distribution has a maximum value 32 at a position 33.
  • the layer 31 of the maximum value 30 of the input grain size distribution 28 differs from the layer 33 of the maximum value 32 of the input grain size distribution 28.
  • the layer 33 is shifted towards smaller grain sizes compared to the layer 31.
  • the input grain size distribution 28 has a full width at half height 34 (full with half maximum). This is determined by taking a horizontal cut through the input grain size distribution 28 at half the maximum value 30 and looking at the width of this cut. Similarly, a full width at half height 35 of the output grain size distribution 29 may be formed.
  • the full width at half height 34 of the input particle size distribution 28 is significantly greater than the full width at half height 35 of the output particle size distribution 29.
  • the method according to the invention thus leads to smaller particle sizes of the solid fuel particles 23 and to a narrower output particle size distribution 29. Simultaneously, the formation of turbulent flows as it flows through the cross-sectional constriction 12, the particles are more evenly distributed.
  • the expected value 36 of the input particle size distribution 28 is also at a different point than the expected value 37 of the output particle size distribution 29.
  • a process control is selected in which the resulting starting mixture is stable for a long time, that is not segregated.
  • preference is given to choosing liquids 24 which have the same density as the solid fuel particles 23, whereby the use of additives for changing the density of the liquid 24 is possible and according to the invention.
  • such an additive is chosen so that the density of the liquid 24 is as close as possible to the density of the solid fuel particles 23.
  • the inventive method and the device 1 advantageously allow the formation of a homogeneously mixed starting mixture of solid fuel particles 23 in a liquid 24.
  • This can be designed so that there is substantially no density difference between the solid fuel particles 23 and the liquid 24, in particular by Adding additives to the liquid 24.
  • a non-segregating dispersion of solid fuel particles 23 in liquid 24 can be generated, which can be used without hesitation, for example, as a fuel, without the fireplaces compared to the combustion of pure liquid 24 must be designed significantly different.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • General Chemical & Material Sciences (AREA)
  • Liquid Carbonaceous Fuels (AREA)

Claims (10)

  1. Dispositif (1) d'homogénéisation d'un mélange de carburant solide dans un liquide, comprenant :
    a. au moins un moyen de transport (2) pour transporter un mélange entrant de carburant solide (23) dans un liquide (24) jusqu'à au moins un rétrécissement de section transversale (12) et augmenter la pression dudit mélange, le moyen de transport (2) étant conçu comme une pompe à piston dans un boîtier du dispositif (1) ; et
    b. un moyen de déviation (38) pour dévier au moins une fois le mélange lors du passage par l'au moins un rétrécissement de section transversale en formant un mélange sortant.
  2. Dispositif selon la revendication 1, dans lequel la dimension du rétrécissement de section transversale (12) peut être réglée par une soupape, en particulier une soupape à siège (13).
  3. Procédé d'homogénéisation d'un mélange (22) de carburant solide (23) dans un liquide (24) comprenant un dispositif selon l'une des revendications précédentes, caractérisé par les étapes suivantes :
    a. transport d'un mélange entrant comprenant un carburant solide (23) dans un liquide (24) en direction d'au moins un rétrécissement de section transversale (12) ;
    b. augmentation de la pression du mélange entrant lors du transport de ce dernier en direction de l'au moins un rétrécissement de section transversale (12) ; et
    c. détente du mélange lors du passage par l'au moins un rétrécissement de section transversale (12) en formant un mélange sortant.
  4. Procédé selon la revendication 3, dans lequel le liquide (24) comprend au moins l'une des substances suivantes :
    a. au moins un hydrocarbure ;
    b. un solvant qui forme un mélange azéotrope avec l'eau ; et
    c. de l'eau.
  5. Procédé selon l'une des revendications 3 et 4, dans lequel le mélange entrant présente une distribution granulométrique à l'entrée (28), et le mélange sortant une distribution granulométrique à la sortie (29), qui se différencient par au moins l'un des facteurs suivants :
    a. la valeur attendue (36, 37) de la distribution granulométrique ;
    b. la position (31, 33) de la valeur maximale (30, 32) de la distribution granulométrique ; et
    c. la largeur à mi-hauteur (34, 35) de la distribution granulométrique.
  6. Procédé selon l'une des revendications 3 à 5, dans lequel la direction d'écoulement du mélange change au moins une fois d'au moins 30° à l'étape 3a.
  7. Procédé selon l'une des revendications 3 à 6, dans lequel au moins un des paramètres suivants est réglable :
    a. la dimension de l'au moins un rétrécissement de section transversale (12) ;
    b. la pression du mélange entrant obtenue à l'étape 3b.
  8. Procédé selon la revendication 7, dans lequel le rétrécissement de section transversale (12) est formé par au moins une soupape à siège (13).
  9. Procédé selon l'une des revendications 3 à 8, dans lequel la fraction solide du mélange entrant représente 50 % ou plus en poids.
  10. Procédé selon l'une des revendications 3 à 9, dans lequel le mélange entrant est prémélangé avant ou pendant l'étape 3a.
EP12155176.6A 2011-02-25 2012-02-13 Procédé et dispositif d'homogénéisation d'un mélange de carburant solide dans un liquide Active EP2492335B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011012504A DE102011012504A1 (de) 2011-02-25 2011-02-25 Verfahren und Vorrichtung zum Homogenisieren einer Mischung von Festbrennstoff in einer Flüssigkeit

Publications (2)

Publication Number Publication Date
EP2492335A1 EP2492335A1 (fr) 2012-08-29
EP2492335B1 true EP2492335B1 (fr) 2018-09-26

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DE (1) DE102011012504A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019238862A1 (fr) * 2018-06-14 2019-12-19 Tetra Laval Holdings & Finance S.A. Homogénéisateur pour aliment liquide et procédé d'homogénéisation

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Publication number Priority date Publication date Assignee Title
DE2933760A1 (de) * 1979-08-21 1981-03-12 Kurt Dipl.-Ing. 6380 Bad Homburg Bojak Quasi-fluessiger brennstoff auf kohlenstaub-basis
JPS61268344A (ja) * 1985-01-22 1986-11-27 Funken:Kk 微粉炭、オイルコ−クス等の粉体をスラリ−化するための連続混練方法及びその装置
US4950307A (en) * 1986-03-17 1990-08-21 Texaco Inc. Preparation of a high-solids concentration low rank coal slurry
CA2050624C (fr) * 1990-09-06 1996-06-04 Vladimir Vladimirowitsch Fissenko Methode et appareil de traitement des fluides au moyen d'uneonde de choc
DE4037665A1 (de) * 1990-11-27 1992-06-04 Dieter Bliesener Mehrstufige homogenisierungsvorrichtung mit regelbaren drosselquerschnitten
DE10019759C2 (de) * 2000-04-20 2003-04-30 Tracto Technik Statisches Mischsystem
DE10310442A1 (de) * 2003-03-11 2004-09-23 Rolf Schüler Kavitations-Molekularreaktor
DE102004038235B4 (de) 2004-08-05 2013-01-31 Rwe Power Ag Verfahren zur Demineralisierung von Braunkohle
EP1964605B1 (fr) * 2007-02-28 2009-12-09 Shigeo Ando Soupape d'injection d'homogénéisateur haute pression
DE102007034253A1 (de) 2007-07-16 2009-01-22 Technische Universität Dresden Verfahren zur Kohleverflüssigung
WO2009035019A1 (fr) * 2007-09-12 2009-03-19 M.Technique Co., Ltd. Particules ultrafines de dioxyde de titane et procédé de fabrication des particules ultrafines

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EP2492335A1 (fr) 2012-08-29
DE102011012504A1 (de) 2012-08-30

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