DE1146849B - Process for washing and drying the filter residue of a filter - Google Patents

Process for washing and drying the filter residue of a filter

Info

Publication number
DE1146849B
DE1146849B DEF12828A DEF0012828A DE1146849B DE 1146849 B DE1146849 B DE 1146849B DE F12828 A DEF12828 A DE F12828A DE F0012828 A DEF0012828 A DE F0012828A DE 1146849 B DE1146849 B DE 1146849B
Authority
DE
Germany
Prior art keywords
filter
washing
drying
residue
steam
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.)
Pending
Application number
DEF12828A
Other languages
German (de)
Inventor
Erich Fest
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.)
ERICH FEST DIPL ING
MARIE LOUISE FEST GEB CAQUELIN
Original Assignee
ERICH FEST DIPL ING
MARIE LOUISE FEST GEB CAQUELIN
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 ERICH FEST DIPL ING, MARIE LOUISE FEST GEB CAQUELIN filed Critical ERICH FEST DIPL ING
Priority to DEF12828A priority Critical patent/DE1146849B/en
Publication of DE1146849B publication Critical patent/DE1146849B/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D33/00Filters with filtering elements which move during the filtering operation
    • B01D33/58Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element
    • B01D33/62Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element for drying
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D33/00Filters with filtering elements which move during the filtering operation
    • B01D33/06Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D33/00Filters with filtering elements which move during the filtering operation
    • B01D33/58Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element
    • B01D33/60Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element for washing

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Drying Of Solid Materials (AREA)

Description

Verfahren zum Waschen und Trocknen der Filterrückstände eines Filters Die Erfindung bezieht sich auf ein Verfahren zum Waschen und Trocknen der Filterrückstände eines Filters, bei welchem der Ringraum zwischen Filtertrommel und umgebendem Gehäuse durch Trennstopfen in eine Vielzahl von gegeneinander abgeschlossenen Kammern unterteilt ist.Process for washing and drying the filter residue of a filter The invention relates to a method for washing and drying the filter residues a filter in which the annular space between the filter drum and the surrounding housing divided into a multitude of mutually sealed chambers by separating plugs is.

Bisher wurde bei derartigen Filtern das Auswaschen der Filterrückstände mit Wasser vorgenommen. So far, the washing out of the filter residues has been carried out with such filters made with water.

Bekannt ist es ferner, eine Trocknung des vorher ausgewaschenen Filterrückstandes durch Behandlung mit Heißluft oder Dampf vorzunehmen. Mit dem Auswaschen des Rückstandes hat diese ausschließlich der Trocknung dienende Behandlung nichts zu tun. It is also known to dry the previously washed-out filter residue by treatment with hot air or steam. With washing out the residue this treatment, which is only used for drying, has nothing to do with it.

Die Erfindung besteht darin, daß einer Waschkammer Wasserdampf, also gesättigter, nicht überhitzter Dampf mit Überdruck und der benachbarten, von der Waschkammer durch einen Trennstopfen hermetisch getrennten Trockenkammer Heißluft mit Überdruck zugeführt werden. Hierdurch ergeben sich mehrere Vorteile. The invention consists in that a washing chamber water vapor, so saturated, non-superheated steam with overpressure and the adjacent, from the Washing chamber hermetically separated by a separating plug. Drying chamber hot air be fed with overpressure. This has several advantages.

Durch die Auswaschung mit Wasserdampf ergibt sich die gleiche Auswaschwirkung wie beim Waschen mit Heißwasser. Da der im gesättigten Zustand zugeführte Dampf am bzw. im Filterrückstand kondensiert, hat das entstandene Kondensat nahezu Siedetemperatur und bewirkt eine besonders intensive Auswaschung. Die Waschlauge fällt heiß an, was für eine nachfolgende Eindampfung vorteilhaft ist. Im Rückstand wird die Kondensationswärme des Dampfes frei und erhitzt den Rückstand auf die Verdampfungstemperatur des Filtrates. Auf diese Weise wird die anschließende Trocknung entlastet; denn es entfällt die Aufheizung des Rückstandes in der Trocknungskammer; die Heißluft dient unmittelbar zum Verdampfen der Feuchtigkeit im Rückstand. Auch im Hinblick auf die Trocknungszeiten ist es vorteilhaft, die Wärme zur Aufheizung des Rückstandes auf die Verdampfungstemperatur durch Dampf statt durch Heißluft in den Rückstand zu bringen, weil Dampf eine wesentlich höhere Wärmekapazität besitzt als Luft und somit mit geringerem Aufwand die gleiche Heizwirkung erzielt wird. Washing out with steam produces the same washing out effect like washing with hot water. Since the steam supplied in the saturated state condenses on or in the filter residue, the resulting condensate has almost boiling temperature and causes a particularly intensive washout. The detergent solution is hot, which is advantageous for subsequent evaporation. The heat of condensation is in the residue of the vapor and heats the residue to the evaporation temperature of the filtrate. In this way, the subsequent drying is relieved; because there is no Heating of the residue in the drying chamber; the hot air is used immediately to evaporate the moisture in the residue. Also with regard to the drying times it is advantageous to use the heat to heat the residue to the evaporation temperature to bring into the residue by steam instead of hot air, because steam is an essential has a higher heat capacity than air and therefore the same with less effort Heating effect is achieved.

Es wurden Versuche mit einer Suspension von 375 g Polyacrylnitril in 670 ccm Wasser, der Salzsäure in verschiedener Menge zugesetzt wurde, durchgeführt. Die mit heißem Wasser oder mit Dampf ausgewaschenen Filterkuchen wurden bei den Versuchen anschließend mit heißer Preßluft ausgeblasen. Die einzelnen Versuche sind in der Tabelle aufgeführt: Versuchs- | Waschmittel- Wassergehalt Säuregehalt reihe menge reihe | g H20/g HCl | g H2OIg Tr. St. g HClIg Tr. St. I/1 61,4 D 0,667 0,62 I/2 56,5 W 0,839 1,15 II/1 58 D 0,672 0,965 II/2 58 W 0,786 0,325 111/1 24,6 W 0,911 0,637 III/2 24,6 D 0,670 0,447 III/3 18,5 W 0,905 1,50 III/4 14 D 0,672 1,13 IV/1 0 0,835 14,8 IV/2 7,5 W 0,79 4,58 IV/3 14,4 W 0,835 0,74 IV/4 34W 0,845 IV/5 69,6 W 0,84 0,44 IV/6 35,7 W 0,765 0,33 Versuchsreihe I 50 ccm Salzsäure (90 gHCl/)/1 Suspension Versuchsreihe II 100 ccm Salzsäure (90 g HCl/l)/1 1 Suspension Versuchsreihe III 100 ccm Salzsäure (224 g HCl/l)/1 1 Suspension Versuchsreihe IV 51 ccm Salzsäure (360 gHCI/1)/11 Suspension In der Tabelle sind unter »Waschmittelmenge« die jeweils auf 1 g HCl in der Suspension bezogene Menge an Wasser (W) bzw. Dampf (D) und unter »Wassergehalt« bzw. »Säuregehalt« der Wasser- bzw.Experiments were carried out with a suspension of 375 g of polyacrylonitrile in 670 ccm of water to which various amounts of hydrochloric acid were added. The filter cakes washed out with hot water or with steam were then blown out with hot compressed air during the experiments. The individual experiments are listed in the table: Experimental | Detergent water content acid content row crowd row | g H20 / g HCl | g H2OIg drop. g HClIg drop. I / 1 61.4 D 0.667 0.62 I / 2 56.5 W 0.839 1.15 II / 1 58 D 0.672 0.965 II / 2 58 W 0.786 0.325 111/1 24.6 W 0.911 0.637 III / 2 24.6 D 0.670 0.447 III / 3 18.5 W 0.905 1.50 III / 4 14 D 0.672 1.13 IV / 1 0 0.835 14.8 IV / 2 7.5 W 0.79 4.58 IV / 3 14.4 W 0.835 0.74 IV / 4 34W 0.845 IV / 5 69.6 W 0.84 0.44 IV / 6 35.7 W 0.765 0.33 Test series I 50 ccm hydrochloric acid (90 g HCl /) / 1 suspension Test series II 100 ccm hydrochloric acid (90 g HCl / l) / 1 1 suspension Test series III 100 ccm hydrochloric acid (224 g HCl / l) / 1 1 suspension Test series IV 51 ccm hydrochloric acid (360 gHCl / 1) / 11 suspension In the table, under "Detergent amount", the amount of water (W) or steam (D) based on 1 g HCl in the suspension and under "Water content" or "Acid content" the Water resp.

Säuregehalt des Filterkuchens, bezogen auf 1 g Trockensubstanz, angegeben.Acidity of the filter cake, based on 1 g of dry matter, indicated.

Wie aus der Tabelle ersichtlich, ist bei Auswaschung mit Dampf der Wassergehalt des Kuchens niedriger als bei Auswaschung mit heißem Wasser, wobei die Auswaschwirkung bei Anwendung von Dampf jener bei Anwendung von Wasser entspricht. As can be seen from the table, when washing with steam is the The water content of the cake is lower than when washing with hot water, whereby the washout effect when using steam corresponds to that when using water.

PATENAN5PRUCH Verfahren zum Waschen und Trocknen der Filterrückstände eines Filters, bei welchem der Ringraum zwischen Filtertrommel und umgebendem Gehäuse durch Trennstopfen in eine Vielzahl von gegeneinander abgeschlossenen Kammern unterteilt ist, dadurch gekennzeichnet, daß der Waschkammer Wasserdampf mit Überdruck und der benachbarten, von der Waschkammer durch einen Trennstopfen hermetisch getrennten Trokkenkammer Heißluft mit Überdruck zugeführt werden. PATEN APPLICATION Process for washing and drying the filter residues of a filter in which the Annular space between the filter drum and the surrounding housing divided into a multitude of mutually sealed chambers by separating plugs is, characterized in that the washing chamber water vapor with excess pressure and the adjacent, hermetically separated from the washing chamber by a separating plug Drying chamber hot air can be supplied with overpressure.

Claims (1)

In Betracht gezogene Druckschriften: Deutsche Patentschriften Nr. 315 312, 878795. Considered publications: German Patent Specifications No. 315 312, 878795.
DEF12828A 1953-09-14 1953-09-14 Process for washing and drying the filter residue of a filter Pending DE1146849B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEF12828A DE1146849B (en) 1953-09-14 1953-09-14 Process for washing and drying the filter residue of a filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF12828A DE1146849B (en) 1953-09-14 1953-09-14 Process for washing and drying the filter residue of a filter

Publications (1)

Publication Number Publication Date
DE1146849B true DE1146849B (en) 1963-04-11

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
DEF12828A Pending DE1146849B (en) 1953-09-14 1953-09-14 Process for washing and drying the filter residue of a filter

Country Status (1)

Country Link
DE (1) DE1146849B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3319789A (en) * 1964-04-09 1967-05-16 United States Steel Corp Method of filtering liquid from solid particles

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE315312C (en) *
DE878795C (en) * 1950-03-10 1953-10-19 Erich Fest Continuously working rotary filter for operation using negative or positive pressure or both at the same time

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE315312C (en) *
DE878795C (en) * 1950-03-10 1953-10-19 Erich Fest Continuously working rotary filter for operation using negative or positive pressure or both at the same time

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3319789A (en) * 1964-04-09 1967-05-16 United States Steel Corp Method of filtering liquid from solid particles

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