[go: up one dir, main page]

WO1998046329A1 - Dispositif de filtrage pour separer des particules solides d'un milieu gazeux - Google Patents

Dispositif de filtrage pour separer des particules solides d'un milieu gazeux Download PDF

Info

Publication number
WO1998046329A1
WO1998046329A1 PCT/EP1998/002111 EP9802111W WO9846329A1 WO 1998046329 A1 WO1998046329 A1 WO 1998046329A1 EP 9802111 W EP9802111 W EP 9802111W WO 9846329 A1 WO9846329 A1 WO 9846329A1
Authority
WO
WIPO (PCT)
Prior art keywords
storage container
filter device
precoat
line
particles
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP1998/002111
Other languages
German (de)
English (en)
Inventor
Jürgen BETHKE
Klaus Rabenstein
Walter Herding
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.)
Herding GmbH Entstaubungsanlagen
Herding GmbH Filtertechnik
Original Assignee
Herding GmbH Entstaubungsanlagen
Herding GmbH Filtertechnik
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 Herding GmbH Entstaubungsanlagen, Herding GmbH Filtertechnik filed Critical Herding GmbH Entstaubungsanlagen
Priority to AU76429/98A priority Critical patent/AU7642998A/en
Priority to DE19880449T priority patent/DE19880449D2/de
Publication of WO1998046329A1 publication Critical patent/WO1998046329A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • B01D46/42—Auxiliary equipment or operation thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2273/00—Operation of filters specially adapted for separating dispersed particles from gases or vapours
    • B01D2273/10—Allowing a continuous bypass of at least part of the flow, e.g. of secondary air, vents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2273/00—Operation of filters specially adapted for separating dispersed particles from gases or vapours
    • B01D2273/12—Influencing the filter cake during filtration using filter aids

Definitions

  • Filter device for filtering out solid particles from a gaseous medium
  • the invention relates to a filter device for filtering out solid particles from a gaseous medium, comprising: (a) a housing in which at least one filter element is arranged, which adjoins a raw gas space with the inflow side and adjoins a clean gas space with the outflow side, and which is assigned a collecting container for the filtered out particles;
  • Such filter devices are known. If such a filter device is to be used continuously or from time to time to filter a gaseous medium which contains solid particles which are problematic for the inflow side of the at least one filter element, in particular sticky particles, very moist particles, particles which have become liquid due to increased temperature, etc. due to the nature of the particles, they adhere to the inflow side of the at least one filter element and for the most part are not properly cleaned during the next cleaning process. A considerable part of the inflow side or even the entire inflow side of the at least one filter element can be closed, as a result of which the function of the filter device is considerably impaired.
  • Precoat material applied to the inflow side of the filter element in question, which, as it were, intercepts the problematic particles to be filtered out before they reach the actual inflow side of the filter element in question.
  • the precoat material along with any intercepted, filtered out, is usually removed
  • precoat material solid particles which are small enough to form an effective “trapping layer”, but are not so small that they entail an excessive, additional pressure loss on the inflow side of the filter element in question.
  • the invention is based on the object of making available a filter device of the type mentioned at the outset, which includes an integrated, particularly simple construction and particularly unproblematic in the functional sequence of the precoat device.
  • the filter device according to the invention is characterized in that
  • Collection container or from a storage container which is at least substantially at the same internal pressure as that
  • Storage tank is provided in the inflow flow path.
  • the precoat material can either be a special material that is specifically selected for the precoat application, for example finely ground limestone.
  • the particles obtained when cleaning the at least one filter element can be used as the precoat material. It is also possible to work with an intermediate option in which a mixture of special precoat particles and particles obtained during cleaning is used as the precoat material.
  • you can also work in a variable time, for example, initially with pure, special precoat particles, which in the course of the operating time increasingly contain special precoat particles which are deposited on the upstream side of the filter element in question ) be replaced. Periodic refilling with special precoat particles or periodic refilling of special precoat particles to refresh the precoat material are further options.
  • the precoat material is discharged from a space (collecting container or storage container) which is under a static pressure on the inside which corresponds at least substantially to the static pressure in the raw gas space of the filter device.
  • This static pressure is generally somewhat higher than the static pressure in the inflow flow path, because there is normally a higher flow speed there than in the raw gas space.
  • the storage container is preferably positioned in the collecting container. In this way, it can be used without incisive
  • Integrate construction documents produced filter devices.
  • Another inexpensive alternative is the accommodation in a kind of lateral extension of the storage container, but moved away from the actual storage container space which is not claimed.
  • the storage container is completely or partially positioned in the collecting container, it can preferably be designed to be open at the top in such a way that when the at least one filter element is cleaned, partially filtered particles get into the storage container. As has already been explained, this results in a gradual replacement of the initial contents of the storage container (normally special precoat particles) by particles which have been filtered out and originate from the raw gas to be filtered. Attention is drawn to the possibility of further refilling the storage container from time to time with special precoat particles.
  • the extent to which the storage container is open and / or the positioning of the storage container can be varied in order to vary the amount of particles that enter the storage container during cleaning. So you can work in particular with a variably wide-open lid of the storage container or with exchangeable, upper end plates with differently sized openings of the storage container or with a variable positioning in the further from the mentioned lateral extension of the collecting container.
  • the storage container is positioned outside the housing and the collecting container. This position offers the particular advantages that a filter device can be retrofitted with a device for applying precoat material with minimal effort and that
  • Storage container for filling, changing, for maintenance work and the like is particularly conveniently accessible.
  • the externally positioned storage container is connected to the raw gas space or the collecting container by a pressure compensation line, so that in this way it is at least substantially at the same internal pressure as the collecting container or the raw gas space.
  • An injector is provided at the beginning of the line.
  • a bypass line is preferably located between the upper region of the collecting container or the storage container which is not filled with precoat material and the region before the beginning of the line to
  • the bypass line ensures that at the beginning of the line there is as perfect as possible essentially the same pressure as in the collecting container or raw gas space.
  • a flow block is preferably provided at the beginning of the line for transporting precoat material, to which a driving nozzle of the injector and one end of the bypass line are connected on the inlet side and to the outlet side the line for transporting
  • Precoat material is connected, and which has at least one suction opening for precoat material. In this way, all fluid lines have been clearly and compactly connected.
  • a fluidizing plate is provided in the collecting container or in the storage container in order to loosen up the precoat material to be discharged through the line. Provision can be made to supply compressed air to the space under the fluidizing plate.
  • differential pressure-controlled For the cleaning of the filter elements in filter devices that is required from time to time, two types of control are mainly considered, namely differential pressure-controlled and time-controlled.
  • the differential pressure between the raw gas space and the clean gas space decides whether a
  • control over the period of the cleaning process normally an entire cleaning process includes several cleaning cycles in succession
  • the filter device has a control device for the precoat process, with which a control device can be used (preferably after each) cleaning process can activate a precoat phase, preferably for a certain period of time.
  • a control device for the precoat process
  • the precoating can be renewed again and again after cleaning.
  • a control device can be provided with which precoat processes can be activated virtually independently of the cleaning processes, either discontinuously in a time-controlled manner (e.g., a new precoat process every x min, which in turn lasts for y min) or also continuously.
  • These controls of the precoat processes are particularly suitable if the at least one filter element is cleaned in a time-controlled manner, in particular with a relatively high frequency, that is to say normally quite frequently and clearly before a high differential pressure is reached.
  • a precoat device according to the invention is particularly suitable for retrofitting existing filter devices or for installation without drastic design changes to the filter device. It is also possible that a user of the filter device only uses the precoat device or switches it on or makes it possible by inserting the storage container if he has to cope with a filtering task in which, as mentioned in the beginning - problematic results from filtered particles. The user can also choose between
  • Figure 1 is a sectional, first filter device in side view.
  • Fig. 2 shows the filter device of Fig. 1 in bottom view.
  • FIG. 3 shows a second filter device in side view
  • Fig. 4 shows the precoat material application device
  • FIG. 5 shows a in the precoat material application device of FIG.
  • the main components of the filter device 2 shown in FIGS. 1, 2 are a housing 4, a plurality of filter elements 6 arranged therein, a collecting space 8 assigned to the housing 4 below, an inflow flow path 10, an outflow flow path 12 and one further below Integrated precoat device to be described in more detail.
  • a conventional suction fan (not shown) is present in the outflow flow path 12 or in the clean gas chamber 18 mentioned below.
  • the components of the usual system for cleaning the filter elements 6, each with a brief air blast against the other direction of flow of the gaseous medium through the filter device 2, are not shown, nor is the control for the cleaning processes and for the precoating processes.
  • the housing 4, viewed without the collecting space 8, has a substantially cuboid shape.
  • the collecting container 8 is connected via a funnel-like transition region 14 in the form of an inverted truncated pyramid (alternatively inverted truncated cone), which also has a cuboid shape (alternatively cylindrical shape), but is significantly smaller than the actual housing 4.
  • the collecting space 8 is - with the exception of one later Cable duct to be described - closed at the bottom, but can be removed from the transition area 14 for emptying.
  • the filter elements 6 are arranged in a parallel arrangement inside the housing 4 (see FIG. 2). Roughly speaking, the filter elements each have the shape of a narrow box in which the upper of the six sides is open.
  • the filter elements 6 are each attached to a horizontal partition 16 of the housing 4, the
  • each filter element 6 is connected via a corresponding opening in the partition 16 to the clean gas space 18 of the filter device located above the partition 16. Below the partition 16 is the raw gas space 20 of the filter device 2.
  • the filter elements 6 are each with their
  • a storage container 22 is fastened centrally in the interior of the collecting container 8. Near its bottom bottom, but spaced from it, is in the reservoir
  • a horizontal fluidizing plate 24 is arranged.
  • a bit above the fluidizing plate 24 is a horizontally aligned injector 28, which is the beginning of one from the inside of the Storage container 22 forms through the wall of the collecting container 8 leading line 30, with associated driving nozzle 26.
  • the line 30 opens at its other end somewhat in front of the housing 4 of the filter device 2 into the inflow flow path 10.
  • the storage container 22 is open at the top, so that a part of the particles falling down when the filter elements 6 are cleaned reaches the storage container 22.
  • the driving nozzle 26 is connected to a compressed air line 29, from which a connecting line 27 to the space between the bottom of the
  • Storage container 22 and the fluidizing plate 24 leads.
  • the precoat device When the precoat device is activated, e.g. by opening a valve in the compressed air line 29, the particles located in the storage container 22 in the area of the injector 28 are loosened by means of the compressed air flowing through the fluidizing plate 27 and discharged through the injector 28 and the line 30 in a certain amount per unit of time.
  • the discharged particles enter the flow of the medium to be filtered in the inflow flow path 10 and consequently reach the inflow surfaces of the filter elements 6.
  • the fluidizing plate 24 is not necessary. In the case of particles which can be discharged without problems through the line 30, the injector 28 is unnecessary.
  • the storage container 22 Since the storage container 22 has an overall open upper side, it is filled up vigorously by particles which are obtained during cleaning. If you do not want this, you can, for example, provide a partially closing lid or an upper closure with openings or even a completely covering lid with only small ventilation openings for pressure equalization.
  • Another variant is shown in dashed lines in FIG. 2.
  • the storage container 22 is accommodated in a lateral extension 32 of the storage space 8, its upper side being spaced above it leading oblique surface of the transition region 14 is covered, but is still open to the extension 32 and thus to the interior of the collecting container 8 for the purpose of pressure equalization.
  • FIG. 3 shows a filter device 2 with the main components housing 4, collecting space 8 for filtered out particles, inflow flow path 10 and, in contrast to the first exemplary embodiment, a precoat device mounted on the outside 40.
  • the structure of the precoat device 40 can best be seen in FIG. 4. It has a storage container 22 which is cylindrical in the lower region and conical in the upper region with a taper downwards. There is a near the lower end of the storage container 22
  • Fluidizing plate 24 Somewhat above the fluidizing plate 24 is the beginning of the line 30, which leads through the wall of the storage container 22 to the outside and from there into the inflow flow path 10.
  • the reservoir 22 is closed at the top by a lid 44.
  • FIG. 5 shows in more detail how the drive nozzle 26, the bypass line 42 and the line 30 are connected to one another, with the aid of a flow block 46; this detail was not shown in FIG. 4 for the sake of clarity, but was only indicated with the circle A. 5 that the driving nozzle 26 and the
  • Initial section of line 30 is flush and horizontal.
  • the bypass line 42 comes from obliquely above and then opens into the flow block 43 from the side either horizontally or obliquely from top to bottom.
  • the flow block 43 On the side opposite the mouth of the bypass line 42, the flow block 43 has a suction opening
  • Pressure equalization line 46 penetrates the cover 44 and ends a little below the cover 44.
  • the lid 44 is connected to the storage container 22 by means of a quick-action lock, so that it can be used for refilling
  • Precoat material can be easily removed.
  • a level indicator 48 is provided on the storage container 22. If the level of the precoat material drops below the level defined by the location of the level indicator 48, z.

Landscapes

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

Abstract

Ce dispositif de filtrage pour séparer des particules solides d'un milieu gazeux comprend: (a) un boîtier (4) qui contient au moins un élément de filtrage (6) dont le côté d'afflux est adjacent à une chambre de gaz brut (20) et le côté d'écoulement est adjacent à une chambre de gaz purifié (18), le boîtier (4) étant associé à un récipient collecteur (8) des particules filtrées; (b) une voie d'afflux (10) du milieu non filtré dans la chambre de gaz brut (20); (c) et une voie d'écoulement (12) du milieu filtré qui part de la chambre de gaz purifié (18). Ce dispositif de filtrage se caractérise en ce que (d) un conduit (30) est monté dans la voie d'afflux (10) pour transporter une précouche contenue dans le récipient collecteur (8) ou dans un réservoir (22) dans lequel règne au moins sensiblement la même pression intérieure que dans le récipient collecteur.
PCT/EP1998/002111 1997-04-11 1998-04-09 Dispositif de filtrage pour separer des particules solides d'un milieu gazeux Ceased WO1998046329A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU76429/98A AU7642998A (en) 1997-04-11 1998-04-09 Filtering device for filtering solid particles out of a gaseous medium
DE19880449T DE19880449D2 (de) 1997-04-11 1998-04-09 Filtervorrichtung zum Ausfiltern von Feststoffteilchen aus einem gasförmigen Medium

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1997115195 DE19715195A1 (de) 1997-04-11 1997-04-11 Filtervorrichtung zum Ausfiltern von Feststoffteilchen aus einem gasförmigen Medium
DE19715195.7 1997-04-11

Publications (1)

Publication Number Publication Date
WO1998046329A1 true WO1998046329A1 (fr) 1998-10-22

Family

ID=7826250

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1998/002111 Ceased WO1998046329A1 (fr) 1997-04-11 1998-04-09 Dispositif de filtrage pour separer des particules solides d'un milieu gazeux

Country Status (3)

Country Link
AU (1) AU7642998A (fr)
DE (2) DE19715195A1 (fr)
WO (1) WO1998046329A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20100059816A (ko) * 2007-08-24 2010-06-04 듀르 시스템스 게엠베하 습윤 페인트 오버스프레이를 제거하기 위한 방법과 필터 장치

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010045000A1 (de) 2010-09-10 2012-03-15 Herding Gmbh Filtertechnik Filtervorrichtung und Filterverfahren
DE202010012437U1 (de) 2010-09-10 2010-11-25 Herding Gmbh Filtertechnik Filtervorrichtung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4010013A (en) * 1975-04-08 1977-03-01 Taisei Kensetsu Kabushiki Kaisha Equipment for treating waste gas containing tar mist
FR2373321A1 (fr) * 1976-12-08 1978-07-07 Air Ind Procede de filtrage d'un gaz charge de tres fines particules solides
GB1563238A (en) * 1975-10-10 1980-03-19 Air Ind Method of purifying a gasous exhaust
US4464184A (en) * 1982-11-22 1984-08-07 United States Steel Corporation Apparatus and method for the control of the precoating of an effluent filtration baghouse utilizing clean side pressure measurement
EP0146407A2 (fr) * 1983-12-17 1985-06-26 Tilghman Wheelabrator Limited Dispositif et procédé de traitement de particules, de gaz et de fumée
US5505766A (en) * 1994-07-12 1996-04-09 Electric Power Research, Inc. Method for removing pollutants from a combustor flue gas and system for same

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8717260U1 (de) * 1987-01-27 1988-06-09 Margraf, Adolf, Dipl.-Ing., 3060 Stadthagen Filternder Abscheider für Roh- oder Rauchgase

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4010013A (en) * 1975-04-08 1977-03-01 Taisei Kensetsu Kabushiki Kaisha Equipment for treating waste gas containing tar mist
GB1563238A (en) * 1975-10-10 1980-03-19 Air Ind Method of purifying a gasous exhaust
FR2373321A1 (fr) * 1976-12-08 1978-07-07 Air Ind Procede de filtrage d'un gaz charge de tres fines particules solides
US4464184A (en) * 1982-11-22 1984-08-07 United States Steel Corporation Apparatus and method for the control of the precoating of an effluent filtration baghouse utilizing clean side pressure measurement
EP0146407A2 (fr) * 1983-12-17 1985-06-26 Tilghman Wheelabrator Limited Dispositif et procédé de traitement de particules, de gaz et de fumée
US5505766A (en) * 1994-07-12 1996-04-09 Electric Power Research, Inc. Method for removing pollutants from a combustor flue gas and system for same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20100059816A (ko) * 2007-08-24 2010-06-04 듀르 시스템스 게엠베하 습윤 페인트 오버스프레이를 제거하기 위한 방법과 필터 장치
EP2335800A1 (fr) * 2007-08-24 2011-06-22 Dürr Systems GmbH Dispositif de filtre et procédé de séparation de pulvérisations de laque mouillée
EP2505255A1 (fr) * 2007-08-24 2012-10-03 Dürr Systems GmbH Dispositif de filtre et procédé de séparation de pulvérisations de laque mouillée

Also Published As

Publication number Publication date
DE19880449D2 (de) 2000-05-18
DE19715195A1 (de) 1998-11-19
AU7642998A (en) 1998-11-11

Similar Documents

Publication Publication Date Title
DE3306294C2 (fr)
DE3888522T2 (de) Vorrichtung und verfahren zum filtrieren.
DE3409219C2 (fr)
DE19934378A1 (de) Filter mit Flüssigkeiten
DE2828976C2 (de) Anschwemmkerzenfilter-Vorrichtung für Trockenaustrag und Verfahren zur Reinigung der Vorrichtung
DE1761106C3 (de) Filter zur Reinigung von mit Feststoffen vermischten Flüssigkeiten
DE2931865A1 (de) Filtereinheit
DE3446842A1 (de) Fluessigkeitsfiltervorrichtung
DE1611158C3 (de) Filtereinrichtung
EP0572369A2 (fr) Dispositif de filtration à nettoyage par contre-courant pour la filtration des liquides ayant haute viscosité
DE2540141B2 (de) Filteranlage zum Reinigen von Gas- oder Luftströmen
DE2320004C3 (de) Filtervorrichtung
DE69824633T2 (de) Filter mit reinigungsdüse
DE2254490C3 (de) Vorrichtung zum Abscheiden von Abfallfasern aus einem Luftstrom
DE2743805B2 (de) Filternder Abscheider, insbesondere Taschen- oder Schlauchfilter
WO1998046329A1 (fr) Dispositif de filtrage pour separer des particules solides d'un milieu gazeux
EP0596333B1 (fr) Bougie filtrante à pression
DE102009042143A1 (de) Filteranordnung zur Verwendung in einem Druckregler für eine landwirtschaftliche Austragvorrichtung
DE3222585C2 (de) Filter
CH313293A (de) Einrichtung zum Filtrieren von Flüssigkeiten
CH462112A (de) Flüssigkeitsfilter
EP0789611B1 (fr) Dispositif a filtres en forme de bougie utilise pour la filtration de biere
DE9300954U1 (de) Filtervorrichtung für Flüssigkeiten
DE689860C (de) Dampfwasserableiter mit einem waermeempfindlichen Ausdehnungskoerper
DE1911808A1 (de) Schmutzfilter fuer Fluessigkeitsleitungen,insbesondere Brauchwasserleitungen

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AL AM AT AU AZ BA BB BG BR BY CA CH CN CU CZ DE DK EE ES FI GB GE GH GM GW HU ID IL IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT UA UG US UZ VN YU ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW SD SZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
NENP Non-entry into the national phase

Ref document number: 1998543473

Country of ref document: JP

REF Corresponds to

Ref document number: 19880449

Country of ref document: DE

Date of ref document: 20000518

WWE Wipo information: entry into national phase

Ref document number: 19880449

Country of ref document: DE

122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: CA