DE975645C - Process for washing out and vacuuming or pressing dry and for avoiding cracks in the filter cake on rotary filters - Google Patents
Process for washing out and vacuuming or pressing dry and for avoiding cracks in the filter cake on rotary filtersInfo
- Publication number
- DE975645C DE975645C DEM1202D DEM0001202D DE975645C DE 975645 C DE975645 C DE 975645C DE M1202 D DEM1202 D DE M1202D DE M0001202 D DEM0001202 D DE M0001202D DE 975645 C DE975645 C DE 975645C
- Authority
- DE
- Germany
- Prior art keywords
- filter cake
- vacuuming
- washing out
- rotary filters
- pressing dry
- 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.)
- Expired
Links
- 239000012065 filter cake Substances 0.000 title claims description 11
- 238000000034 method Methods 0.000 title claims description 6
- 238000005406 washing Methods 0.000 title claims description 3
- 239000007788 liquid Substances 0.000 description 4
- 238000001035 drying Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/20—Vibrating the filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/06—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/44—Regenerating the filter material in the filter
- B01D33/52—Regenerating the filter material in the filter by forces created by movement of the filter element
- B01D33/54—Regenerating the filter material in the filter by forces created by movement of the filter element involving vibrations
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtration Of Liquid (AREA)
Description
Verfahren zum Auswaschen und Trockensaugen oder -drücken sowie zur Vermeidung von Rißbildungen im Filterkuchen auf Drehfiltern Das deutsche Patent 975 334 betrifft ein Verfahren zum Filtrieren von Flüssigkeitsschlämmen auf Filtern, die unter gleichbleibendem oder schwankendem Drücken filtriert, trockengesaugt oder ausgewaschen und trockengesaugt werden, und beschreibt Maßnahmen, die zur Erhöhung des Trockengehalts im Filterkuchen dienen. Es sieht zunächst die Aufgabe verhältnismäßig geringer Flüssigkeitsmengen während des Trockensauge-oder -drückvorganges vor. Es stellt ferner ein Verfahren unter Schutz, bei dem mit oder ohne Aufgabe verhältnismäßig geringer Flüssigkeitsmengen Druckschwankungen auf den Filterkuchen einwirken. Process for washing out and dry vacuuming or pressing as well as for Avoidance of cracks in the filter cake on rotary filters The German patent 975 334 relates to a method for filtering liquid sludge on filters, which are filtered, sucked dry or under constant or fluctuating pressures can be washed out and vacuumed dry, and describes measures that can be taken to increase of the dry content in the filter cake. It initially sees the task proportionately small amounts of liquid during the dry vacuuming or pressing process. It furthermore puts a procedure under protection, in which with or without a task proportionate small amounts of liquid, pressure fluctuations act on the filter cake.
Es hat sich nun herausgestellt, daß sich der Feststoffanteil im Filterkuchen wesentlich erhöhen läßt, wenn der Filterkuchen während des Trockensauge-oder -drückvorganges Erschütterungen unterworfen wird. It has now been found that the solids content in the filter cake Can be increased significantly if the filter cake during the dry suction or drying process Is subjected to vibrations.
Die Erschütterungen können in an sich bekannter Weise durch Klopfvorrichtungen oder durch andere in Vibration versetzte Mittel erzeugt und angewandt werden. Sie bewirken, daß der Rauminhalt des Filterkuchens auf das praktisch erreichbare kleinste Maß vermindert wird. Hierdurch werden die Hohlräume im Filterkuchen weiter verkleinert und damit gleichzeitig auch die Menge der anhaftenden Flüssigkeit. The vibrations can be caused in a manner known per se by knocking devices or generated and applied by other vibrated means. she cause the volume of the filter cake to be as small as practically achievable Degree is reduced. This further reduces the cavities in the filter cake and at the same time also the amount of adhering liquid.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEM1202D DE975645C (en) | 1941-03-23 | 1941-03-23 | Process for washing out and vacuuming or pressing dry and for avoiding cracks in the filter cake on rotary filters |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEM1202D DE975645C (en) | 1941-03-23 | 1941-03-23 | Process for washing out and vacuuming or pressing dry and for avoiding cracks in the filter cake on rotary filters |
Publications (1)
Publication Number | Publication Date |
---|---|
DE975645C true DE975645C (en) | 1962-03-29 |
Family
ID=7291098
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEM1202D Expired DE975645C (en) | 1941-03-23 | 1941-03-23 | Process for washing out and vacuuming or pressing dry and for avoiding cracks in the filter cake on rotary filters |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE975645C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4422503A1 (en) * | 1994-06-28 | 1996-01-04 | Kloeckner Humboldt Deutz Ag | Sepn. of solids, e.g. coal particles, from fluid suspension |
-
1941
- 1941-03-23 DE DEM1202D patent/DE975645C/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4422503A1 (en) * | 1994-06-28 | 1996-01-04 | Kloeckner Humboldt Deutz Ag | Sepn. of solids, e.g. coal particles, from fluid suspension |
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