WO2024002592A1 - Appareil de filtration - Google Patents

Appareil de filtration Download PDF

Info

Publication number
WO2024002592A1
WO2024002592A1 PCT/EP2023/063859 EP2023063859W WO2024002592A1 WO 2024002592 A1 WO2024002592 A1 WO 2024002592A1 EP 2023063859 W EP2023063859 W EP 2023063859W WO 2024002592 A1 WO2024002592 A1 WO 2024002592A1
Authority
WO
WIPO (PCT)
Prior art keywords
filter
filter element
gas
support tube
housing
Prior art date
Application number
PCT/EP2023/063859
Other languages
German (de)
English (en)
Inventor
Andreas Fritsche
Original Assignee
Andreas Fritsche
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 Andreas Fritsche filed Critical Andreas Fritsche
Publication of WO2024002592A1 publication Critical patent/WO2024002592A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
    • B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/31—Self-supporting filtering elements
    • B01D29/33—Self-supporting filtering elements arranged for inward flow filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/62—Regenerating the filter material in the filter
    • B01D29/70—Regenerating the filter material in the filter by forces created by movement of the filter element
    • B01D29/74—Regenerating the filter material in the filter by forces created by movement of the filter element involving centrifugal force
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
    • B01D46/04—Cleaning filters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/42—Auxiliary equipment or operation thereof
    • B01D46/48—Removing dust other than cleaning filters, e.g. by using collecting trays
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/66—Regeneration of the filtering material or filter elements inside the filter
    • B01D46/74—Regeneration of the filtering material or filter elements inside the filter by forces created by movement of the filter element
    • B01D46/78—Regeneration of the filtering material or filter elements inside the filter by forces created by movement of the filter element involving centrifugal forces

Definitions

  • the present invention relates to a filter device for separating dust particles from a gas mixture, comprising a filter housing, and at least one support tube rotatably mounted in the filter housing, and at least one cylindrical filter element that can be rotated with the support tube, and at least one drive for rotating the support tube and the filter element.
  • the invention relates to a method for operating a filter device of the type mentioned.
  • Such filter devices can be called fabric filters, dry filters or bag filters. They serve to clean a gas or gas mixture, hereinafter generally referred to as a gas mixture, with dust particles being separated or separated from the gas mixture by means of a filter element.
  • a gas mixture can, for example, be a combustible product gas produced by gasification, which e.g. B. was obtained from biomass or a mixture of biomass and plastic.
  • a filter system for separating dust particles from a gas mixture usually consists of two or several connected in parallel, i.e. H . Filter devices arranged next to each other.
  • the gas mixture is cleaned by means of such a filter device by the gas mixture flowing through at least one filter element, whereby the dust particles contained in the gas mixture remain attached to an inflow side of the filter element and are thus separated from the gas mixture.
  • the gas mixture flows as so-called raw gas to a surface of the filter element and further through the filter element, and leaves the filter element as clean gas on a second surface.
  • the dust particles collect on a surface of the filter element and generate a layer of dust particles, the so-called filter cake.
  • the filter cake that grows over time increasingly clogs the filter element, causing the functionality of the filter element to decrease over time. In other words, this means that the filter element has a limited functional lifespan.
  • EP 3 492 161 A1 shows a filter device with two scrapers arranged next to two cylindrical filter elements. When this filter device is in a cleaning state, the two rotate Filter elements around their longitudinal axis, with their outer surfaces brushing along the two scrapers, whereby dust accumulated on the filter elements is scraped off and falls to the ground.
  • the object of the present invention is therefore to provide a filter device of the type mentioned at the outset that is improved over the prior art.
  • the at least one filter element can be cleaned exclusively by means of the centrifugal forces generated by rotation of the filter element with the support tube.
  • the big advantage of this filter device is that the at least one filter element is not exposed to any mechanical stress or is not exposed to mechanical abrasion from a scraper. This allows the service life of the filter element to be increased enormously.
  • the filter element can be cleaned and reused if necessary with a very high, advantageously almost unlimited, number of cleaning processes.
  • the cleaning processes advantageously take place during a cleaning state of the filter device, the cleaning state being different from the filtering state.
  • the support tube and the filter element are advantageously in a stationary or approximately stationary state.
  • the drive rotates the support tube, to which the filter element that can be rotated with the support tube is attached, so that centrifugal forces arise on the filter element, through which dust particles adhering to the filter element are released, so that the filter element is cleaned.
  • the at least one filter element is advantageously cylindrical and/or tubular.
  • the gas mixture flows as raw gas from the outer surface to the inner surface of the filter element, with the dust particles being separated on the filter element. It then continues to flow from the inner surface of the filter element as clean gas. The dust particles accumulate on the outer surface of the filter element.
  • the centrifugal forces generated by rotation can cause the flow direction of the gas mixture to reverse, so that the clean gas flows from the inner surface to the outer surface of the filter element.
  • the longitudinal axis of the support tube is a vertical axis in the operating state of the filter device, so that when the support tube rotates about its longitudinal axis, the dust particles released from the filter element move along the outer surface of the filter element, i.e. H . in the space between the filter element and the filter housing, can fall unhindered to the bottom of the filter housing.
  • the support tube can also be referred to as a support shaft.
  • the filter element can also be called a filter tube.
  • the filter element can be rotated by the drive at a minimum tangential speed of 20 m/s on an outer surface of the filter element for cleaning the filter element.
  • the drive can conveniently be controlled or regulated with a control or regulating unit.
  • the filter device has two circular gas-impermeable support disks which are aligned on the support tube orthogonally to the longitudinal direction of the support tube and are attached to the support tube at a distance from one another and can be rotated with the support tube by the drive, to which the filter element is attached, preferably by means of clamps.
  • the preferably fabric-like filter element is advantageously stretched onto the gas-impermeable support disks.
  • the attachment of the filter element to the gas-impermeable support disks is designed to be flow-tight, so that there is no fluid flow or flow in the connection area between the filter element and the gas-impermeable support disks. Gas mixture and/or pure gas flow takes place.
  • the support tube or The support shaft, the two gas-impermeable support disks and the filter element together advantageously form a so-called filter drum, which can be rotated in its entirety by the drive.
  • a plurality of rotatably mounted filter drums that can be rotated by at least one drive to be arranged within a filter housing.
  • the gas mixture preferably flows from the space between the outer surface of the at least one filter drum and the filter housing into the interior of the at least one filter drum and then in the direction of the at least one support tube.
  • the at least one support tube has a plurality of gas inlet openings on its lateral surface in the area between the gas-impermeable support disks and at least one gas outlet opening at one end of the support tube for removing the clean gas, i.e. the cleaned gas mixture.
  • a rotary feedthrough In the area of the gas outlet opening of the support tube, a rotary feedthrough can be arranged, which directs the clean gas flowing from the gas outlet opening into a clean gas outlet opening, where it leaves the filter device.
  • the filter housing has at least one gas supply opening, which is designed to supply the gas mixture to be filtered into the filter housing.
  • At least one, preferably trough-shaped, dust collection housing is arranged under the filter housing, which has at least one raw gas supply opening for supplying the gas mixture to be filtered into the dust collection housing, and at least one raw gas overflow opening which is congruent with the gas supply opening of the filter housing for supplying the gas mixture to be filtered the dust collection housing into the filter housing, wherein the raw gas overflow opening is at the same time a dust removal opening for removing the dust separated by the filter element from the filter housing into the dust collection housing.
  • the raw gas overflow opening is advantageously arranged at a distance from the raw gas supply opening. Through these measures It can be achieved that larger dust particles can fall to the bottom of the dust collection housing before entering through the gas supply opening into the filter housing and only smaller, lighter dust particles get into the filter housing with the gas mixture in order to be filtered off by the filter element.
  • the distance between the raw gas overflow opening and the raw gas supply opening is at least as large as the diameter, in particular the largest diameter, of the raw gas supply opening.
  • an opening plane of the raw gas feed opening is arranged at an angle, preferably orthogonally, to an opening plane of the raw gas overflow opening.
  • the dust collection housing has at least one dust lock for discharging the separated dust from the dust collection housing, and/or at least one transport screw that can be rotated by means of a transport screw drive for transporting the separated dust within the dust collection housing.
  • the dust lock is advantageously designed to be flow-tight, so that no fluid flow takes place through the dust lock at least when the separated dust is not being discharged.
  • the transport of the separated dust preferably by means of the transport screw, advantageously takes place in the direction of the at least one dust lock.
  • the separated dust can also be transported using an alternative means of transport, such as. B. by means of at least one scraper, slider, conveyor belt or the like.
  • the filter device for stiffening and/or suspending the filter element has at least one filter device fastened to the support tube and to the filter element, for example by means of clamps, clamps, screws or other fastening means, and arranged at a distance between the gas-impermeable support disks and orthogonal to the longitudinal direction of the support tube aligned circular gas-permeable support disk.
  • the gas-permeable support disks are preferably used to maintain the cylindrical shape or for stiffening the filter element.
  • Protection is also sought for a method for operating a filter device according to the invention, wherein the filter element of the filter device with the support tube for cleaning the dust from the filter element is rotated exclusively by means of centrifugal forces, preferably with a minimum tangential speed on an outer surface of the filter element of 20 m / s .
  • the method for operating a filter device according to the invention relates in particular to the cleaning condition of the filter device.
  • FIG. 1 a first exemplary embodiment of a filter device according to the invention
  • Fig. 2 a second exemplary embodiment of a filter device according to the invention
  • FIG. 3 and 4 two horizontal sections through the filter device of the first and/or second exemplary embodiment
  • Fig. 5 a third exemplary embodiment of a filter device according to the invention.
  • the Fig. 1 shows a schematic vertical section of a first exemplary embodiment of a filter device 1 according to the invention for separating dust particles from a gas mixture.
  • the filter device 1 comprises a filter housing 2, at least one support tube 3 rotatably mounted in the filter housing 2, at least one cylindrical filter element 4 which can be rotated with the support tube 3, and at least one drive 5 for rotating the support tube 3 and the filter element 4, the filter element 4 can be cleaned exclusively by means of the centrifugal forces generated by rotation of the filter element 4 with the support tube 3, preferably with a minimum tangential speed on an outer surface of the filter element 4 of 20 m/s.
  • a filter device includes two on the support tube 3 orthogonal to the longitudinal direction of the support tube 3 aligned and spaced apart from each other on the support tube 3 and rotatable with the support tube 3 by the drive 5 circular-shaped gas-impermeable support disks 6 on which the filter element 4, preferably is secured using clamps, preferably tensioned.
  • two gas inlet openings 7 are shown along the lateral surface of the support tube 6 in the area between the gas-impermeable support disks 6 and a gas outlet opening 8 at one end of the support tube for the removal of gas mixture cleaned by means of the filter element 4, or in other words pure gas .
  • the filter device 1 can generally have any number of gas inlet openings 7 and/or gas outlet openings 8.
  • the filter housing 2 has at least two gas supply openings 9, which are designed to supply the gas mixture to be filtered into the filter housing 2.
  • a preferably trough-shaped dust collection housing 10 is arranged under the filter housing 2 and has at least one raw gas feed opening 11 for supplying the gas mixture to be filtered into the dust collection housing 10.
  • the dust collecting housing 10 has two raw gas overflow openings 12 which are congruent with the gas supply opening 9 of the filter housing 2 for feeding the gas mixture to be filtered from the dust collecting housing 10 into the filter housing 2, the two raw gas overflow openings 12 simultaneously having two dust removal openings for removing the gas from the filter element 4 separated dust from the filter housing 2 into the dust collection housing 10.
  • the left raw gas overflow opening 12 is also arranged at a distance from the raw gas supply opening 11, so that larger heavier dust particles fall into the dust collection housing 10 before the gas mixture enters the filter housing 2.
  • the filter device 1 prefferably has exactly one or more than two gas supply openings 9 and/or raw gas overflow openings 12.
  • the dust collection housing 10 has at least one dust lock 13 for discharging the separated dust from the dust collection housing 10 and/or at least one transport screw 15 that can be rotated by means of a transport screw drive 14, i.e. a drive of whatever design, for transporting the separated dust within the dust collection housing 10 on .
  • a transport screw drive 14 i.e. a drive of whatever design
  • the direction of movement of the gas mixture 17 and the direction of movement of larger dust particles 18, in particular within the dust collection housing 10, are marked by arrows. It can be seen that the gas mixture with smaller, lighter dust particles essentially initially flows from bottom to top. rises from the dust collection housing 10 into the filter housing 2, and larger, heavier dust particles and/or the separated filter cake fall from top to bottom into the dust collection housing 10 due to gravity.
  • the first exemplary embodiment shown in FIG. 1 preferably has one on the support tube 3 and on the filter element 4 for stiffening and/or suspending the filter element 4 by means of clamps, fixed and spaced between the gas-impermeable support disks 6 and aligned orthogonally to the longitudinal direction of the support tube 3, circular gas-permeable support disk 16.
  • the filter device 1 can also have several gas-permeable support disks 16 for stiffening and/or suspending the filter element 4.
  • a rotary feedthrough 19 for removing the clean gas from the gas outlet opening 8 into a clean gas outlet opening 20 is also shown, which also has a seal 22 towards the support tube 3, preferably a mechanical seal.
  • the gas mixture to be filtered conveniently flows from the raw gas feed opening 17 into the dust collection housing 10, through the gas feed opening 9 or Raw gas overflow opening 12 further into the filter housing 2, through the filter element 4, through the gas inlet openings 7 into the support tube 3, out of the support tube 3 through the gas outlet opening 8, into the rotary feedthrough 19 and through the clean gas outlet opening 20, whereby it is the filter device 1 leaves .
  • the filter element 4 or the filter drum 23 When the filter device 1 is in the cleaning state, the filter element 4 or the filter drum 23 so that centrifugal forces act on the dust particles deposited on the filter element 4, whereby the dust particles collected there are released from the filter element 4 and fall to the ground in the direction of the dust collecting housing 10.
  • the rotating clean gas within the filter drum 23 can create a pressure opposite to the flow direction 17 of the filtering state, which can lead to a reversal of the flow direction of the gas mixture or clean gas through the filter element 4 and thus the cleaning process again supports .
  • the second exemplary embodiment of a filter device 1 according to the invention differs from that in FIG. 1 shown first exemplary embodiment in that the filter device 1 has two gas-permeable support disks 16 for stiffening and / or suspension of the filter element 4.
  • FIGS. 3 and 4 show horizontal sections through a filter device 1 according to the invention, with FIGS. 3 a top view of a gas-impermeable support disk 6 and the Fig. 4 shows a top view of a gas-permeable support disk 16.
  • FIGS. 3 and 4 relate to the first two exemplary embodiments shown in FIGS. 1 and 2, in which exactly one filter element 4 is arranged within a cylindrical filter housing 2.
  • filter elements 4 or filter drums 23 can also be arranged within a filter housing 2.
  • FIG 5 shows an exemplary embodiment of a filter device 1 according to the invention, in which three filter elements 4 or filter drums 23 are arranged within a filter housing 2.
  • each filter element 4 or each filter drum 23 can be rotated by means of a drive 5.
  • filter elements 4 or filter drums 23 can be rotated by means of a shared drive 5.
  • the filter housing 2 can have a cylindrical, rectangular or other shape.
  • FIG. 5 there is a dust collecting housing 10 below the filter housing 2, in which the dust separated by all three filter elements 4 collects.
  • Dust collection housing 10 has a transport screw 15 for transport of the separated dust in the direction of the dust lock 13.
  • the dust collecting housing 10 is channel-shaped, i.e. essentially form-fitting with the outer contour of the screw conveyor 15, so that the dust can be transported efficiently.
  • dust transport means such as conveyor belts, scrapers or the like, can also be used, with a shape of the dust collection housing 10 adapted to the dust transport means being favorable.
  • Filter drums 23 within a filter housing 2 have the advantage that the centrifugal forces generated by the rotation of several filter elements 4 can result in a reversal of the flow direction, which can improve the cleaning of the filter elements 4.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

L'invention concerne un appareil de filtration (1) pour séparer des particules de poussière d'un mélange gazeux, comprenant : - un boîtier de filtre (2) et - au moins un tube de support (3) monté rotatif dans le boîtier de filtre (2) et - au moins un élément de filtre cylindrique (4) qui peut tourner avec le tube de support (3) et - au moins un entraînement (5) pour faire tourner le tube de support (3) et l'élément de filtre (4), l'élément de filtre (4) pouvant être nettoyé juste au moyen des forces centrifuges générées par la rotation de l'élément de filtre (4) avec le tube de support (3).
PCT/EP2023/063859 2022-06-29 2023-05-24 Appareil de filtration WO2024002592A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA133/2022A AT525913B1 (de) 2022-06-29 2022-06-29 Filtervorrichtung
ATA133/2022 2022-06-29

Publications (1)

Publication Number Publication Date
WO2024002592A1 true WO2024002592A1 (fr) 2024-01-04

Family

ID=86688512

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2023/063859 WO2024002592A1 (fr) 2022-06-29 2023-05-24 Appareil de filtration

Country Status (2)

Country Link
AT (1) AT525913B1 (fr)
WO (1) WO2024002592A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118267778A (zh) * 2024-05-31 2024-07-02 广东欣龙隧道装备股份有限公司 一种用于盾构施工的泥浆处理系统

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB391577A (en) * 1931-02-26 1933-05-04 Desmond Walter Molins Improvements in or relating to dust collectors or separators and the like
US3778982A (en) * 1971-05-28 1973-12-18 Haas W & Sohn Fa Scrubber for removing particulate matter from gaseous fluid
EP0594216A1 (fr) * 1992-10-22 1994-04-27 Kaltenbach & Voigt Gmbh & Co. Installation de filtrage pour un milieu gazeux
DE102005037778A1 (de) * 2004-08-10 2006-02-23 Neumann, Gunther, Dipl.-Ing. (FH) Vorrichtung zur Luftreinigung
DE202014102359U1 (de) * 2014-05-20 2014-06-06 Kirsten Remane Vorrichtung zur Filtration von Fluiden
EP3492161A1 (fr) 2017-11-29 2019-06-05 Hargassner Ges mbH Dispositif de nettoyage d'un produit gazeux

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DE1916099C3 (de) * 1969-03-28 1980-11-27 Daimler-Benz Ag, 7000 Stuttgart Vorrichtung zum Reinigen eines in der Ansauganlage eines Verbrennungsmotors angeordneten Filters
DE10313402A1 (de) * 2003-03-25 2004-10-14 Zubler Gerätebau GmbH Absaugvorrichtung, insbesondere für Zahntechnikerarbeitsplätze
KR100642150B1 (ko) * 2005-07-11 2006-11-02 한국전선(주) 용접흄 집진기
DE102010022928A1 (de) * 2010-06-07 2011-12-08 Esta Apparatebau Gmbh & Co. Kg Verfahren zur Reinigung einer Filterpatrone und Filterpatronen-Reinigungsvorrichtung sowie Abscheider mit einer solchen Einrichtung
DE202017103579U1 (de) * 2017-06-16 2017-07-12 San Ford Machinery Co., Ltd. Filterpatrone eines Staubabscheiders mit Entstaubungsvorrichtung
CN212757660U (zh) * 2020-07-27 2021-03-23 广州泰昌环保科技有限公司 一种用于生活垃圾焚烧发电厂炉渣净化除尘装置
CN215085724U (zh) * 2021-01-18 2021-12-10 宿迁菲优特空气净化设备有限公司 一种自清洁空气过滤器

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB391577A (en) * 1931-02-26 1933-05-04 Desmond Walter Molins Improvements in or relating to dust collectors or separators and the like
US3778982A (en) * 1971-05-28 1973-12-18 Haas W & Sohn Fa Scrubber for removing particulate matter from gaseous fluid
EP0594216A1 (fr) * 1992-10-22 1994-04-27 Kaltenbach & Voigt Gmbh & Co. Installation de filtrage pour un milieu gazeux
DE102005037778A1 (de) * 2004-08-10 2006-02-23 Neumann, Gunther, Dipl.-Ing. (FH) Vorrichtung zur Luftreinigung
DE202014102359U1 (de) * 2014-05-20 2014-06-06 Kirsten Remane Vorrichtung zur Filtration von Fluiden
EP3492161A1 (fr) 2017-11-29 2019-06-05 Hargassner Ges mbH Dispositif de nettoyage d'un produit gazeux

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118267778A (zh) * 2024-05-31 2024-07-02 广东欣龙隧道装备股份有限公司 一种用于盾构施工的泥浆处理系统

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AT525913B1 (de) 2023-09-15
AT525913A4 (de) 2023-09-15

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