DE3134148A1 - Equipping filter elements for separating off solids - Google Patents
Equipping filter elements for separating off solidsInfo
- Publication number
- DE3134148A1 DE3134148A1 DE19813134148 DE3134148A DE3134148A1 DE 3134148 A1 DE3134148 A1 DE 3134148A1 DE 19813134148 DE19813134148 DE 19813134148 DE 3134148 A DE3134148 A DE 3134148A DE 3134148 A1 DE3134148 A1 DE 3134148A1
- Authority
- DE
- Germany
- Prior art keywords
- filter elements
- dust
- separating
- additional
- mean
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/04—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia
- B01D45/08—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia by impingement against baffle separators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/10—Filter screens essentially made of metal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
Abstract
Description
Ausstattung von Filterelementen zur FeststoffabscheidungEquipping filter elements for solids separation
Die Erfindung ist eine Zusatz anmeldung zur Patentanmeldung P 30 25 126.4.The invention is an additional registration to patent application P 30 25 126.4.
Die Erfindung bei der Hauptanmeldung bezieht sich auf neuartige Filterelemente zur Staubabscheidung aus Luft oder Gasen. Unter Filterelementen werden dabei zumeist dünnwandige Materialien aus Metallen, Metallverbindungen, Kunststoffen oder sonstigen Werkstoffen verstanden, die mit Löchern unterschiedlicher Form und Größe versehen sind.The invention in the main application relates to novel filter elements for separating dust from air or gases. Under filter elements are mostly thin-walled materials made of metals, metal compounds, plastics or others Understood materials that are provided with holes of different shapes and sizes are.
Durch diese Filterelemente, die einzeln oder hintereinander geschaltet eingesetzt werden können, leitet man das zu reinigende Staub-Gas-Gemisch hindurch. Abhängig von der Anströmgeschwindigkeit, Art und Größe sowie Verteilung der Löcher im Filtermaterial und den Staubeigenschaften erreicht man zumeist schon bei Verwendung eines Filterelementes eine sehr weitgehende Staubabscheidung.Through these filter elements, which are connected individually or in series can be used, the dust-gas mixture to be cleaned is passed through. Depending on the flow velocity, type, size and distribution of the holes in the filter material and the dust properties can usually be achieved with use a filter element a very extensive dust separation.
Bei entsprechenden Untersuchungen hat sich herausgestellt, daß mittlere Lochdurchmesser zwischen 5 und 200 pin je nach Staubeigenschaften eine optimale Staubabscheidung bewirken.Appropriate investigations have shown that mean Hole diameter between 5 and 200 pin, depending on the dust properties, an optimal one Effect dust separation.
Löcher mit kleineren mittleren Durchmessern verstopfen sehr schnell, während bei solchen mit mittleren Durchmessern über 200 pm auch bei relativ groben Stäuben zumeist nur eine ungenügende Staubabscheidung erreicht wird.Holes with smaller average diameters clog very quickly, while with those with mean diameters over 200 pm also with relatively coarse ones Dusts usually only insufficient dust separation is achieved.
Ein besonders erwähnenswerter Vorteil der Filterelemente gegenüber bekannten Filzen und Geweben liegt im niedrigen Druckverlust, auch bei längeren Betriebszeiten. Bei zu kleinen mittleren Lochdurchmessern steigt der Druckverlust allerdings erheblich an, so daß auch deshalb mittlere Lochdurchmesser von 5 pm nicht unterschritten werden sollten.A particularly noteworthy advantage over the filter elements known felts and fabrics is due to the low pressure loss, even with longer ones Operating times. If the average hole diameter is too small, the pressure loss increases however, considerably, so that for this reason an average hole diameter of 5 μm is not should be undercut.
Es ist dabei zu berücksichtigen, daß der Lochabstand nicht beliebig klein gewählt werden kann, da sonst eine notwendige Filterkuchenbildung erschwert wird, was zu einer Verschlechterung der Staubabscheidung führen kann. Minimale Abstandsverhältnisse ( Lochabstand zu Lochdurchmesser ) liegen bei 4 bis 5, wobei die größeren Werte für kleinere Lochdurchmesser gelten. Größere als die erwähnten Abstände können dann sinnvoll sein, wenn im zu reinigenden Gas niedrige Staubkonzentrationen vorliegen und dadurch eine durchgehende Filterkuchenbildung erschwert wird Wie sich bei entsprechenden Untersuchungen gezeigt hat, spielt die Art der Löcher, rund oder irgendwie sonst geformt, hergestellt beispielsweise durch Laserstrahlen oder Galvanoeffekte, für die Effektivität der Staubabscheidung keine wesentliche Rolle.It must be taken into account that the hole spacing is not arbitrary can be chosen small, otherwise a necessary filter cake formation is difficult which can lead to a deterioration in dust separation. Minimal spacing (Hole spacing to hole diameter) are included 4 to 5, where the larger values for smaller hole diameters apply. Larger than the mentioned distances can be useful if the gas to be cleaned has low dust concentrations present and thereby a continuous filter cake formation is made more difficult How yourself has shown in appropriate research, the type of holes, round or plays somehow otherwise shaped, e.g. produced by laser beams or galvanic effects, no essential role for the effectiveness of the dust separation.
Umfangreiche Untersuchungen mit verschiedenen Stäuben haben gezeigt, daß man auch mit feinkörnigem Staub und unterschiedlichen Rohgaskonzentrationen bei entsprechender Anordnung der Elemente Reingasstaubgehalte unter 10 mg/m3 i.N. erhält. Lediglich in der Anfahrphase bei sauberen Filterelementen treten für einige Sekunden Staubspitzen bis 500 mg/m3 i.N. auf. Abhängig von der Rohgasstaubkonzentration fallen die Reingasstaubgehalte innerhalb von 1 bis 2 Minuten auf Werte von unter 10 mg/m3 iZNo ab.Extensive studies with various types of dust have shown that one can also deal with fine-grained dust and different raw gas concentrations with the appropriate arrangement of the elements, clean gas dust contents below 10 mg / m3 at normal temperature receives. Some only occur in the start-up phase with clean filter elements Seconds dust peaks up to 500 mg / m3 i.N. on. Depending on the raw gas dust concentration the clean gas dust contents drop to values below within 1 to 2 minutes 10 mg / m3 iZNo.
Um Staubspitzen während des Betriebsanfanges zu verhindern, hat es sich als sinnvoll erwiesen, entweder die Filterelemente unter negative oder positive Hochspannung zu setzen, oder aber die Staubteilchen durch eine einfache Vorrichtung aufzuladen und die Filterelemente zu erden.To prevent dust spikes during the start of operation, it has It proved useful to either put the filter elements under negative or positive To set high voltage, or else the dust particles by a simple device to charge and to ground the filter elements.
Dabei werden Spannungen benötigt, die in der Elektrostatik üblich sind. Eine Aufladung der Filterelemente oder der Staubteilchen führt dazu, daß die Staubteilchen unter dem Einfluß elektrischer Kräfte an den Filterelementen abgeschieden werden, so daß auch in der Anfangsphase niedrige Reingasstaubgehalte erreicht werden. Entsprechend den gas-und staubtechnischen Gegebenheiten kann die elektrische Aufladung während des gesamten Betriebes oder lediglich während der Anfangsphase der Filtration aufrecht erhalten werden.This requires voltages that are common in electrostatics are. Charging of the filter elements or the dust particles leads to the Dust particles deposited on the filter elements under the influence of electrical forces so that low clean gas dust contents can also be achieved in the initial phase. Depending on the gas and dust conditions, the electrical charge during the entire operation or only during the initial phase of the filtration be maintained.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19813134148 DE3134148C2 (en) | 1980-07-03 | 1981-08-28 | Use of a filter element |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19803025126 DE3025126A1 (en) | 1980-07-03 | 1980-07-03 | Dust filter made from thin plastics or metal foil - with numerous small perforations to promote retention of fine particles |
DE19813134148 DE3134148C2 (en) | 1980-07-03 | 1981-08-28 | Use of a filter element |
Publications (2)
Publication Number | Publication Date |
---|---|
DE3134148A1 true DE3134148A1 (en) | 1983-03-17 |
DE3134148C2 DE3134148C2 (en) | 1993-02-11 |
Family
ID=25786387
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19813134148 Expired - Fee Related DE3134148C2 (en) | 1980-07-03 | 1981-08-28 | Use of a filter element |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE3134148C2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3800457C1 (en) * | 1988-01-09 | 1989-07-27 | Metallgesellschaft Ag, 6000 Frankfurt, De | |
EP0397225A1 (en) * | 1989-05-10 | 1990-11-14 | METALLGESELLSCHAFT Aktiengesellschaft | Filter element for removing dusts from gases |
US5753013A (en) * | 1996-12-23 | 1998-05-19 | Dingfelder; Alan W. | Gas drying apparatus and method |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4309017A1 (en) * | 1993-03-20 | 1994-09-22 | Elba Werk Maschinen Gmbh & Co | Dedusting apparatus for use in concrete preparation units |
DE29519617U1 (en) * | 1995-12-13 | 1996-02-29 | Bayyomi Fawzi Ali | filter |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1292138B (en) * | 1959-04-01 | 1969-04-10 | Trion Ag | Electrostatic precipitator |
DE1536768A1 (en) * | 1965-08-10 | 1970-01-22 | Diaporit S A | Filter body made of thermoplastic plastic |
DE2802965A1 (en) * | 1978-01-24 | 1979-07-26 | Burger Manfred R | Electrostatic gas purification using filter medium - with the filter placed between the ionised gas and one electrode |
DE3025126A1 (en) * | 1980-07-03 | 1982-02-04 | Weber, Ekkehard, Prof. Dr.-Ing., 4300 Essen | Dust filter made from thin plastics or metal foil - with numerous small perforations to promote retention of fine particles |
-
1981
- 1981-08-28 DE DE19813134148 patent/DE3134148C2/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1292138B (en) * | 1959-04-01 | 1969-04-10 | Trion Ag | Electrostatic precipitator |
DE1536768A1 (en) * | 1965-08-10 | 1970-01-22 | Diaporit S A | Filter body made of thermoplastic plastic |
DE2802965A1 (en) * | 1978-01-24 | 1979-07-26 | Burger Manfred R | Electrostatic gas purification using filter medium - with the filter placed between the ionised gas and one electrode |
DE3025126A1 (en) * | 1980-07-03 | 1982-02-04 | Weber, Ekkehard, Prof. Dr.-Ing., 4300 Essen | Dust filter made from thin plastics or metal foil - with numerous small perforations to promote retention of fine particles |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3800457C1 (en) * | 1988-01-09 | 1989-07-27 | Metallgesellschaft Ag, 6000 Frankfurt, De | |
EP0327737A2 (en) * | 1988-01-09 | 1989-08-16 | Metallgesellschaft Ag | Filter element for the separation of dusts |
EP0327737A3 (en) * | 1988-01-09 | 1991-03-06 | Metallgesellschaft Ag | Filter element for the separation of dusts |
EP0397225A1 (en) * | 1989-05-10 | 1990-11-14 | METALLGESELLSCHAFT Aktiengesellschaft | Filter element for removing dusts from gases |
AU624947B2 (en) * | 1989-05-10 | 1992-06-25 | Metallgesellschaft Aktiengesellschaft | Filter element for separating dusts from gases |
US5192349A (en) * | 1989-05-10 | 1993-03-09 | Metallgesellschaft Aktiengesellschaft | Filter element for separating dusts from gases |
US5753013A (en) * | 1996-12-23 | 1998-05-19 | Dingfelder; Alan W. | Gas drying apparatus and method |
US5882383A (en) * | 1996-12-23 | 1999-03-16 | Dingfelder; Alan W. | Gas drying apparatus |
Also Published As
Publication number | Publication date |
---|---|
DE3134148C2 (en) | 1993-02-11 |
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8110 | Request for examination paragraph 44 | ||
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8364 | No opposition during term of opposition | ||
8340 | Patent of addition ceased/non-payment of fee of main patent |