DD159857B1 - DEVICE FOR CLEANING FILING SEPARATORS - Google Patents
DEVICE FOR CLEANING FILING SEPARATORS Download PDFInfo
- Publication number
- DD159857B1 DD159857B1 DD81231067A DD23106781A DD159857B1 DD 159857 B1 DD159857 B1 DD 159857B1 DD 81231067 A DD81231067 A DD 81231067A DD 23106781 A DD23106781 A DD 23106781A DD 159857 B1 DD159857 B1 DD 159857B1
- Authority
- DD
- German Democratic Republic
- Prior art keywords
- compressed air
- filter
- air nozzle
- ratio
- outlet
- Prior art date
Links
- 238000004140 cleaning Methods 0.000 title claims description 9
- 239000000463 material Substances 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- 239000000428 dust Substances 0.000 claims 6
- 230000002349 favourable effect Effects 0.000 claims 5
- 230000000694 effects Effects 0.000 claims 3
- 238000004519 manufacturing process Methods 0.000 claims 2
- 230000001419 dependent effect Effects 0.000 claims 1
- 230000002708 enhancing effect Effects 0.000 claims 1
- 239000012530 fluid Substances 0.000 claims 1
- 238000011835 investigation Methods 0.000 claims 1
- 230000003068 static effect Effects 0.000 claims 1
- 230000002123 temporal effect Effects 0.000 claims 1
- 230000001052 transient effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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
- B01D46/02—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
- B01D46/24—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
- B01D46/2407—Filter candles
-
- 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
- B01D46/4281—Venturi's or systems showing a venturi effect
-
- 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
- B01D46/70—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter
- B01D46/71—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter with pressurised gas, e.g. pulsed air
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Description
zu Durchmesser der Vorrichtung von 8:1 bis 10:1 und Durchmesser der Druckluftdüse zu Durchmesser der Vorrichtung von etwa 1:15 im stationären Zustand gemessen.to diameter of the device from 8: 1 to 10: 1 and diameter of the compressed air nozzle to diameter of the device of about 1:15 in the steady state measured.
Der Auslegung der Vorrichtung zur Abreinigu ng filternder Abscheider liegt damit nicht die bisher übliche strömungstechnische, auf der Basis einer stationären Betrachtung fußende Auslegung von Injektoren zugrunde. Sie stützt sich vielmehr auf Ergebnisse, die aus zahlreichen Untersuchungen gewonnen und verallgemeinert wurden. Der Gesamtvorgang der Druckluftimpulsabreinigung, der gekennzeichnet ist durch die Umwandlung der Druckenergie im Druckkessel über die Bewegungsenergie beim Druckluftimpuls in die mechanische Abreinigungsenergie am Filtermaterial, wird dabei grundlegend als instationärer Vorgang betrachtet. Die allgemeine Lösung der diesen Vorgang beschreibenden instationären Differentialgleichungen ist zur Zeit nicht möglich.The interpretation of the device for cleaning ning filtering separator is thus not based on the previously customary fluidic based on a stationary consideration interpretation of injectors. Rather, it relies on results obtained and generalized from numerous studies. The overall process of Druckluftimpulsabreinigung, which is characterized by the conversion of the pressure energy in the pressure vessel on the kinetic energy in the compressed air pulse in the mechanical Abreinigungsenergie on the filter material, is considered fundamentally as a transient process. The general solution of the transient differential equations describing this process is currently not possible.
Die Erfindung soll am nachstehenden Ausführungsbeispiel näher erläutert werden.The invention will be explained in more detail in the following embodiment.
Figur 1 zeigt einen Ausschnitt aus einem Schlauchabscheider mit den Bauelementen Druckluftdüse (1), Vorrichtung (2) zur Abreinigung filternder Abscheider, Schlauchboden (3), der Reingasraum (4) und Rohgasraum (5) trennt, Filterschlauch (6), Stützkorb mit Abdichtkonstruktion (7). Zur besseren Übersicht wurde eine notwendige Halterungskonstruktion für die Vorrichtung (2) nicht mitgezeichnet. Bauteil (2) stellt die erfindungsgemäß vorgeschlagene Lösung der Vorrichtung zur Abreinigung filternder Abscheider dar. Sie besitzt eine zylindrische Form mit einer Einlaufkontur (8) und ist der Druckluftdüse (1) nachgeschaltet. (9) und (10) bezeichnen die Eintritts- bzw. Austrittsebene der Vorrichtung (2), (11) die Austrittsebene der Druckluftdüse (1). Bei Einhaltung der Verhältnisse Länge I zwischen Austritt Druckluftdüse (11) und Austritt Vorrichtung (10) zum Innendurchmesser D der Vorrichtung (2) von 5:1 bis 7:1 und der Verhältnisse von Innendurchmesser d der Druckluftdüse (1)zu Innendurchmesser D der Vorrichtung (2) von 1:8 bis 1:12 wird mit Hilfe dieser Vorrichtung (2) die kinetische Energie des Druckluftimpulses energetisch günstig in die mechanische Abreinigungsenergie am Filterschlauch (6) umgesetzt und damit kleine Druckverluste am Filterschlauch (6) erzielt.Figure 1 shows a section of a Schlauchabscheider with the components compressed air nozzle (1), device (2) for cleaning filtering separator, hose bottom (3), the clean gas chamber (4) and crude gas chamber (5) separates, filter bag (6), support basket with Abdichtkonstruktion (7). For a better overview, a necessary support structure for the device (2) was not drawn. Component (2) represents the inventively proposed solution of the device for cleaning filtering separators. It has a cylindrical shape with an inlet contour (8) and is downstream of the compressed air nozzle (1). (9) and (10) denote the entrance and exit levels of the device (2), (11) the exit plane of the compressed air nozzle (1). In compliance with the ratios length I between outlet compressed air nozzle (11) and outlet device (10) to the inner diameter D of the device (2) of 5: 1 to 7: 1 and the ratios of inner diameter d of the compressed air nozzle (1) to inner diameter D of the device (2) from 1: 8 to 1:12 with the help of this device (2) the kinetic energy of the compressed air pulse energetically converted into the mechanical Abreinigungsenergie the filter hose (6) and thus small pressure losses on the filter tube (6).
Fallen der Austrittsquerschnitt Druckluftdüse (11) und der Eintrittsquerschnitt Vorrichtung (9) zusammen, was im wesentlichen von der gewählten Druckluftdüsenkonstruktion und der Halterung der Vorrichtung (2) abhängt, so ist die Länge I zwischen Austritt Druckluftdüse (11) und Austritt Vorrichtung (10) gleich der Gesamtlänge L der Vorrichtung (2). Für die Einlaufkontur (8) kann zweckmäßig eine runde Kontur mit dem Radius R gleich 0,2 bis 0,5 mal Durchmesser D der Vorrichtung (2) gewählt werden, so daß die Vorrichtung (2) zur Abreinigung filternder Abscheiderz. B. aus einem Rohrstück durch Aufweiten hergestellt werden kann. In der Filterphase stellt die Vorrichtung (2) keinen großen zusätzlichen Strömungswiderstand beim Übergang in den Reingasraum dar, da ihre Wände parallel zur Strömungsrichtung im Schlauch verlaufen.If the outlet cross-section compressed air nozzle (11) and the inlet cross-section device (9) coincide, which depends essentially on the selected compressed air nozzle construction and the mounting of the device (2), the length I between outlet compressed air nozzle (11) and outlet device (10) equal to the total length L of the device (2). For the inlet contour (8) can be suitably a round contour with the radius R equal to 0.2 to 0.5 times the diameter D of the device (2) are selected, so that the device (2) for cleaning-filtering Abscheiderz. B. can be made from a piece of pipe by widening. In the filter phase, the device (2) is not a large additional flow resistance in the transition into the clean gas space, since their walls are parallel to the flow direction in the hose.
In Betracht gezogene Druckschriften:Documents considered:
DE-AS 1228130DE-AS 1228130
DE-OS 2332031DE-OS 2332031
VDI — Forschungsheft 479VDI - Research Bulletin 479
Ausgabe B Band 26,1560Issue B volume 26.1560
Claims (2)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DD81231067A DD159857B1 (en) | 1981-06-24 | 1981-06-24 | DEVICE FOR CLEANING FILING SEPARATORS |
| DE19823216409 DE3216409A1 (en) | 1981-06-24 | 1982-05-03 | Process for cleaning filtering separators |
| AT0174282A AT380644B (en) | 1981-06-24 | 1982-05-04 | DEVICE FOR CLEANING FILTER ELEMENTS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DD81231067A DD159857B1 (en) | 1981-06-24 | 1981-06-24 | DEVICE FOR CLEANING FILING SEPARATORS |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DD159857A1 DD159857A1 (en) | 1983-04-13 |
| DD159857B1 true DD159857B1 (en) | 1986-08-13 |
Family
ID=5531790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DD81231067A DD159857B1 (en) | 1981-06-24 | 1981-06-24 | DEVICE FOR CLEANING FILING SEPARATORS |
Country Status (3)
| Country | Link |
|---|---|
| AT (1) | AT380644B (en) |
| DD (1) | DD159857B1 (en) |
| DE (1) | DE3216409A1 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4157901A (en) * | 1978-04-07 | 1979-06-12 | The Air Preheater Company, Inc. | Filter bag assembly including a venturi-cage assembly |
-
1981
- 1981-06-24 DD DD81231067A patent/DD159857B1/en unknown
-
1982
- 1982-05-03 DE DE19823216409 patent/DE3216409A1/en not_active Withdrawn
- 1982-05-04 AT AT0174282A patent/AT380644B/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DD159857A1 (en) | 1983-04-13 |
| ATA174282A (en) | 1985-11-15 |
| DE3216409A1 (en) | 1983-01-20 |
| AT380644B (en) | 1986-06-25 |
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