EP2994236B1 - Dispositif methode de séparation de particules d'un flux gazeux - Google Patents

Dispositif methode de séparation de particules d'un flux gazeux Download PDF

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Publication number
EP2994236B1
EP2994236B1 EP14725035.1A EP14725035A EP2994236B1 EP 2994236 B1 EP2994236 B1 EP 2994236B1 EP 14725035 A EP14725035 A EP 14725035A EP 2994236 B1 EP2994236 B1 EP 2994236B1
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EP
European Patent Office
Prior art keywords
pipeline
displacement body
gas stream
foreign particles
flow
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.)
Active
Application number
EP14725035.1A
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German (de)
English (en)
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EP2994236A1 (fr
Inventor
Wolfgang ALLERÖDDER
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.)
Dieffenbacher GmbH Maschinen und Anlagenbau
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Dieffenbacher GmbH Maschinen und Anlagenbau
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Application filed by Dieffenbacher GmbH Maschinen und Anlagenbau filed Critical Dieffenbacher GmbH Maschinen und Anlagenbau
Priority to PL14725035T priority Critical patent/PL2994236T3/pl
Publication of EP2994236A1 publication Critical patent/EP2994236A1/fr
Application granted granted Critical
Publication of EP2994236B1 publication Critical patent/EP2994236B1/fr
Priority to HRP20171482TT priority patent/HRP20171482T1/hr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C3/00—Apparatus in which the axial direction of the vortex flow following a screw-thread type line remains unchanged ; Devices in which one of the two discharge ducts returns centrally through the vortex chamber, a reverse-flow vortex being prevented by bulkheads in the central discharge duct
    • B04C3/06—Construction of inlets or outlets to the vortex chamber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C3/00—Apparatus in which the axial direction of the vortex flow following a screw-thread type line remains unchanged ; Devices in which one of the two discharge ducts returns centrally through the vortex chamber, a reverse-flow vortex being prevented by bulkheads in the central discharge duct
    • B04C2003/003—Shapes or dimensions of vortex chambers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C3/00—Apparatus in which the axial direction of the vortex flow following a screw-thread type line remains unchanged ; Devices in which one of the two discharge ducts returns centrally through the vortex chamber, a reverse-flow vortex being prevented by bulkheads in the central discharge duct
    • B04C2003/006—Construction of elements by which the vortex flow is generated or degenerated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C9/00—Combinations with other devices, e.g. fans, expansion chambers, diffusors, water locks
    • B04C2009/008—Combinations with other devices, e.g. fans, expansion chambers, diffusors, water locks with injection or suction of gas or liquid into the cyclone

Definitions

  • the invention relates to the removal of dust-like, gaseous, mist-like or liquid substances from a gas stream to be purified in a device and a corresponding method.
  • DE 26 56 151 A1 For example, a device for separating solid contaminants from a gas stream is known.
  • DE 103 35 194 A1 shows a pre-separator for removing impurities from the air in an air intake system of an automotive engine.
  • US 4,629,481 A shows a modular separation unit for separating a liquid from a gas-liquid mixture.
  • EP 1 458 490 B1 shows a cyclone separator, with a tube and an inlet opening and an outflow opening, wherein in the tube a stationary vertebral body is arranged, which sets the gas / liquid flow in a spiral movement, so that the liquid contained in the gas flow under the influence of the prevailing in the spiral flow centrifugal force is thrown radially outward and separated there.
  • Such apparatus may be needed in particular in the manufacture of wood or wood pellets. They serve to separate wood dust and volatile organic compounds in pneumatic conveying and drying systems.
  • the invention has for its object to provide a device for separating foreign particles from a gas stream, which is simpler in construction and cheaper to manufacture, which has a higher selectivity and a generally improved efficiency. Furthermore, a procedure should be created.
  • the solution for the process of separating foreign particles from a gas stream comprising the steps of: introducing a foreign particle laden gas stream into a pipeline having a venturi throat to increase the velocity of the gas stream, injecting liquid into the gas stream via injection nozzles or while passing the Venturi constriction, further increasing the velocity of the gas stream by means of a cross-section reducing coaxial displacer within the conduit, generating a rotational flow of the gas stream around the conduit axial extension of the pipeline by means of guide vanes for attaching the foreign particles and the liquid in the vicinity of the soffit of the pipeline and separation of the liquid with the foreign particles as adjacent to the soffit of the pipeline partial flow of located in the central region of the cross section gas flow.
  • the power increase and the small installation space is achieved by the combination of the above features.
  • the acceleration of a gas flow is increased by a cross-sectional constriction with simultaneous spraying of the washing liquid cleaning performance.
  • the resulting high shear forces between the gas stream and the liquid lead to the formation of very fine drops of liquid to which disperse solid particles adhere or which coagulate with foreign liquid drops.
  • water-soluble gaseous components can be absorbed at the surface of the drops.
  • the washing performance correlates with the specific surface of the drops and is therefore inversely proportional to the diameter of the drops.
  • the loaded after washing drops of the washing liquid are immediately separated from the gas stream due to their inertia by the integrated axial DC swirl deposition in the downstream droplet.
  • the basic idea is essentially to be able to perform all the necessary functions for the efficient separation of foreign particles from a gas stream in a single apparatus.
  • This device is characterized by low structural complexity and applicability in existing pipe systems.
  • Such a device thus combines the function of gas scrubbing by injection of liquid, in particular water, and their atomization and the subsequent swirl generation.
  • the separation of the foreign particles proceeds according to the combined principle of a Venturi scrubber with a DC cyclone.
  • the guide vanes are arranged between the inflow end and the outflow end of the displacement body.
  • the pipeline can run vertically in the area of the displacement body and the displacement body can float freely in the gas flow without mechanical holding devices.
  • the upstream end of the displacer may be in the shape of a cone having a tip directed against the flow, and / or the outflow end of the displacer may be in the shape of a cone with a downstream tip.
  • the device is suitable for carrying out the method, but can also be operated independently.
  • the device according to the invention shown comprises a pipeline 1 with an inlet opening 2 for introducing the gas stream to be treated.
  • the flow direction of the gas stream is denoted by 11.
  • the pipeline 1 has a venturi constriction 3.
  • an injection device comprising a plurality of injection nozzles 4 for injecting liquid into the pipeline 1.
  • it is preferably water.
  • the pipeline 1 encloses a displacement body 5. This is arranged concentrically in the pipeline 1.
  • the upstream end 12 of the displacement body 5 has the shape of a cone with directed against the flow tip.
  • the outflow end 13 of the displacement body 5 also has the shape of a cone with pointing in the outflow direction tip.
  • the displacement body 5 forms with the lateral surface of the pipe 1 an annular gap. He is also equipped with vanes 6. These are distributed over the entire circumference of the displacement body 5 in a uniform arrangement. See also FIG. 2 ,
  • a constriction 7 In an axial section downstream of the displacement body 5 is a constriction 7.
  • the pipe 1 is abruptly reduced at this constriction to a smaller diameter. Accordingly, piping 1 continues with a smaller diameter.
  • the inlet 14 of the pipe 1 with the smaller diameter by a certain distance upstream in the previous section with a larger diameter of the pipe 1 protrude (immersion principle).
  • a partial flow 15 is branched off, while the branch line 8 is tangentially connected to the larger diameter portion of pipe 1, see.
  • FIG. 1 Sectional view right.
  • the end portion of a device according to the invention can also be designed as in FIG. 3 shown.
  • the pipe 1 runs vertically. It protrudes a dip tube 9 into the pipe 1 in this case.
  • the inlet opening 10 of the dip tube 9 is surrounded concentrically by pipeline 1.
  • the branched partial flow 15 preferably consists of contaminated liquid.
  • the vanes 6 are arranged in the illustrated embodiment, the displacement body 5. Instead, they can also be fixed to the soffit of the pipe 1.
  • the displacement body 5 may, preferably with an adjusting device 16, be axially displaceable. Once set in a specific axial position, it is initially stationary. Thus, the flow cross section at the injection point of the water can be adjusted according to the requirements of the operation.
  • the pipeline 1 extends vertically in the region of the displacement body 5.
  • the displacement body does not necessarily have to be fixed, for example by mechanical connections to the fixed environment. Rather, it can move freely in the flow, preferably only in the axial direction, thus up and down.
  • he is exactly the same as he was before It performs its functions just as well as the stationary displacement body: it thus forms an annular gap together with the inner surface of the wall of the pipe 1; He also creates a spin.
  • Its weight can be sized as it meets the requirements of the practice.
  • a guide device is provided so that the displacement body, although axially movable in the pipe 1 and at the same time can provide for the rotational movement of the gas stream.
  • This can by a corresponding geometric arrangement (not shown), for example by a groove in the displacement body, in which a guide plate or a spring, connected to the reveal of the pipe 1, engages.
  • the displacement body can also perform a function as a kind of check valve or closure unit in the absence of the gas flow for the pipeline 1.

Landscapes

  • Cyclones (AREA)
  • Separating Particles In Gases By Inertia (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)

Claims (9)

  1. Dispositif pour séparer des particules étrangères d'un flux de gaz, comprenant les caractéristiques suivantes :
    - une conduite (1) avec une ouverture d'entrée (2) pour introduire le flux de gaz à traiter ;
    - une buse de Venturi (3) dans la conduite (1) ;
    - au moins un gicleur d'injection (4) disposé avant ou dans la buse de Venturi (3) pour l'injection de liquide dans la conduite ;
    - un organe de refoulement (5) disposé dans la conduite (1), qui forme avec la surface d'enveloppe intérieure de la conduite (1) un interstice annulaire et qui s'étend dans le sens axial au moins sur la zone de sortie de la buse de Venturi (3) ;
    - des aubages fixes (6) disposés sur l'organe de refoulement (5) ou dans la zone de l'organe de refoulement (5) sur l'intrados de la conduite (1) ;
    - la conduite (1) présentant en aval de l'organe de refoulement (5) un dispositif pour extraire des particules étrangères de la zone de circonférence de sa section et pour extraire du gaz purifié de la zone centrale de sa section.
  2. Dispositif selon la revendication 3, caractérisé en ce que les aubages fixes (6) se trouvent entre l'extrémité d'attaque (12) et l'extrémité de fuite (13) de l'organe de refoulement (5).
  3. Dispositif selon l'une des revendications 1 ou 2, caractérisé en ce que :
    - la paroi de la conduite (1) présente une ou plusieurs ouvertures de sortie pour les particules étrangères en aval de l'organe de refoulement ;
    - la conduite présente au niveau des ouvertures ou en aval de celles-ci une zone resserrée (7) pour les particules étrangères ;
    - la zone resserrée (7) est suivie d'une ouverture de sortie pour l'échappement du gaz purifié.
  4. Dispositif selon l'une des revendications 1 ou 2, caractérisé en ce que :
    - pour l'extraction du flux de gaz purifié, il est prévu en aval de l'organe de refoulement (5) un tube plongeur (9) dont l'ouverture d'entrée (10) est entourée de façon concentrique par la conduite (1) et capte le flux de gaz ;
    - pour l'extraction des particules étrangères, il est prévu en aval de l'ouverture d'entrée (10) du tube plongeur (9) une ou plusieurs conduites de bifurcation (8).
  5. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que l'organe de refoulement (5) est capable de translation axiale et/ou fixe dans la position axiale définie.
  6. Organe de refoulement selon l'une des revendications 1 à 4, caractérisé en ce que la conduite (1) passe verticalement au niveau de l'organe de refoulement (5) et en ce que l'organe de refoulement (5) flotte librement dans le flux de gaz sans dispositifs de maintien mécaniques, de préférence avec un blocage de la rotation.
  7. Dispositif selon l'une des revendications 1 à 6, caractérisé en ce que l'extrémité d'attaque (12) de l'organe de refoulement (5) a la forme d'un cône dont la pointe est dirigée à contre-courant.
  8. Dispositif selon l'une des revendications 1 à 7, caractérisé en ce que l'extrémité de fuite (13) de l'organe de refoulement (5) a la forme d'un cône dont la pointe est dirigée vers l'aval.
  9. Procédé pour séparer des particules étrangères d'un flux de gaz, comprenant les étapes suivantes :
    introduction d'un flux de gaz chargé de particules étrangères dans une conduite (1) qui présente une buse de Venturi (3) pour accroître la vitesse du flux de gaz,
    injection de liquide dans le flux de gaz au moyen de gicleurs d'injection avant ou pendant le franchissement de la buse de Venturi (3),
    nouvelle augmentation de la vitesse du flux de gaz au moyen d'un organe de refoulement (5) coaxial réduisant la section à l'intérieur de la conduite (1),
    production d'un écoulement rotationnel du flux de gaz autour de l'étendue axiale de la conduite au moyen d'aubages fixes (6) afin de faire se déposer les particules étrangères et le liquide à proximité de l'intrados de la conduite (1) et
    séparation du liquide et des particules étrangères, sous la forme d'un flux partiel (15) contigu à l'intrados de la conduite (1), du flux de gaz qui se trouve dans la partie centrale de la section.
EP14725035.1A 2013-05-06 2014-05-06 Dispositif methode de séparation de particules d'un flux gazeux Active EP2994236B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL14725035T PL2994236T3 (pl) 2013-05-06 2014-05-06 Urządzenie i sposób do separacji cząstek obcych z przepływu gazu
HRP20171482TT HRP20171482T1 (hr) 2013-05-06 2017-10-05 Uređaj i metoda za odvajanje čestica iz protoka plina

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013104645.2A DE102013104645A1 (de) 2013-05-06 2013-05-06 Vorrichtung und Verfahren zum Abscheiden von Fremdpartikeln aus einem Gasstrom
PCT/EP2014/059262 WO2014180861A1 (fr) 2013-05-06 2014-05-06 Dispositif et procédé de séparation de particules étrangères d'avec un courant gazeux

Publications (2)

Publication Number Publication Date
EP2994236A1 EP2994236A1 (fr) 2016-03-16
EP2994236B1 true EP2994236B1 (fr) 2017-07-12

Family

ID=50736054

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14725035.1A Active EP2994236B1 (fr) 2013-05-06 2014-05-06 Dispositif methode de séparation de particules d'un flux gazeux

Country Status (8)

Country Link
EP (1) EP2994236B1 (fr)
CN (1) CN105188948B (fr)
DE (1) DE102013104645A1 (fr)
ES (1) ES2642269T3 (fr)
HR (1) HRP20171482T1 (fr)
PL (1) PL2994236T3 (fr)
PT (1) PT2994236T (fr)
WO (1) WO2014180861A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023046973A1 (fr) 2021-09-26 2023-03-30 Dieffenbacher GmbH Maschinen- und Anlagenbau Dispositif et procédé pour purifier un flux gazeux

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016116171A1 (de) 2016-08-30 2018-03-01 Dieffenbacher GmbH Maschinen- und Anlagenbau Vorrichtung und Verfahren zur Reinigung eines Gasstromes
DE202016104767U1 (de) 2016-08-30 2017-12-04 Dieffenbacher GmbH Maschinen- und Anlagenbau Vorrichtung zur Reinigung eines Gasstromes
DE102017207869A1 (de) * 2017-05-10 2018-11-15 Mahle International Gmbh Turboladerentlüftungseinrichtung
JP7445553B2 (ja) * 2020-07-22 2024-03-07 上田日本無線株式会社 気体センサ用気液分離器

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FR2334421A1 (fr) * 1975-12-12 1977-07-08 Facet Enterprises Dispositif a ecoulement axial pour le nettoyage d'un gaz
US4629481A (en) 1985-01-18 1986-12-16 Westinghouse Electric Corp. Low pressure drop modular centrifugal moisture separator
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023046973A1 (fr) 2021-09-26 2023-03-30 Dieffenbacher GmbH Maschinen- und Anlagenbau Dispositif et procédé pour purifier un flux gazeux
DE102021004821A1 (de) 2021-09-26 2023-03-30 Dieffenbacher GmbH Maschinen- und Anlagenbau Vorrichtung und Verfahren zur Reinigunng eines Gasstromes

Also Published As

Publication number Publication date
EP2994236A1 (fr) 2016-03-16
ES2642269T3 (es) 2017-11-16
CN105188948A (zh) 2015-12-23
PL2994236T3 (pl) 2018-01-31
PT2994236T (pt) 2017-10-20
HRP20171482T1 (hr) 2017-11-17
WO2014180861A1 (fr) 2014-11-13
DE102013104645A1 (de) 2014-11-06
CN105188948B (zh) 2021-11-23

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