AT37843B - Procedure for cleaning filter cloths. - Google Patents
Procedure for cleaning filter cloths.Info
- Publication number
- AT37843B AT37843B AT37843DA AT37843B AT 37843 B AT37843 B AT 37843B AT 37843D A AT37843D A AT 37843DA AT 37843 B AT37843 B AT 37843B
- Authority
- AT
- Austria
- Prior art keywords
- cloths
- cleaning filter
- procedure
- filter cloths
- cleaning
- Prior art date
Links
Landscapes
- Filtering Materials (AREA)
Description
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Verfahren zum Reinigen von Filtertüchern.
In einigen Zweigen der chemischen Industrie besteht die Notwendigkeit, Schlammmassen abzupressen, deren feste Bestandteile ausschliesslich oder grösstenteils Karbonate der alkalischen Erden und des Magnesiums sud. dite zu dieser, mittels Filterpressen vor-
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dichten Karbonatkruste, die alle Poren verlegt, sodass die Tücher die zu ihrer Verwendung nötige Porosität entbehren. Bisher pssegt man die Schlammkrusten durch Auswaschen der Tücher mit verdünnter Salzsäure zu entfernen, was aber den Nachteil mit sich bringt, dass die Fasern geschwächt werden und die Benutzungsdauer der Tücher verkürzt wird.
Vorliegende Erfindung betrifft ein Verfahren zur Reinigung von mit unlöslichen Karbonaten verunreinigten Presstüchern und beruht auf der bekannten Reaktion, dass Erd- alkatikarhnnato u. s. f. durch Kohlensäure in lösliche Bikarbonate übergeführt werden.
Im Sinne der Erfindung werden daher die gebrauchten Filtertücher, an welchen aus
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ebensolche Krusten haften, mit Wasser behandelt, das mit Kohlensäure gesättigt ist. Schon nach kurzer Einwirkung wird die Kruste gelockert und kann durch mechanische Mitt'l leicht entfernt werden. Bei längerer Einwirkung wird die Kruste vollständig gelöst, ohne dass es einer mechanischen Nachhilfe bedürfte.
Bei der Durchführung des Verfahrens kann man derart vorgehen, dass die Reinigung
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beschriebenen Reinigungsverfahrens die Tücher geschont und können daher länger verwendet werden.
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
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Procedure for cleaning filter cloths.
In some branches of the chemical industry there is a need to squeeze out masses of sludge whose solid constituents are exclusively or mostly carbonates of alkaline earths and magnesium sud. dite to this, using filter presses
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dense carbonate crust that obstructs all pores so that the cloths lack the porosity necessary for their use. So far, the sludge crusts have been removed by washing the cloths with dilute hydrochloric acid, but this has the disadvantage that the fibers are weakened and the duration of use of the cloths is shortened.
The present invention relates to a method for cleaning press cloths contaminated with insoluble carbonates and is based on the known reaction that Erd- alkatikarhnnato u. s. f. are converted into soluble bicarbonates by carbonic acid.
For the purposes of the invention, therefore, the used filter cloths on which from
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such crusts adhere, treated with water which is saturated with carbonic acid. Even after a short exposure, the crust is loosened and can easily be removed by mechanical means. With prolonged exposure, the crust is completely loosened without the need for mechanical tuition.
When carrying out the process one can proceed in such a way that the cleaning
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The cleaning process described protects the cloths and can therefore be used for longer.
** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT37843T | 1908-08-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
AT37843B true AT37843B (en) | 1909-07-10 |
Family
ID=3555375
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT37843D AT37843B (en) | 1908-08-01 | 1908-08-01 | Procedure for cleaning filter cloths. |
Country Status (1)
Country | Link |
---|---|
AT (1) | AT37843B (en) |
-
1908
- 1908-08-01 AT AT37843D patent/AT37843B/en active
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