AT37843B - Procedure for cleaning filter cloths. - Google Patents

Procedure for cleaning filter cloths.

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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
Application number
Other languages
German (de)
Original Assignee
Oesterreichischer Ver Fuer Che
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 Oesterreichischer Ver Fuer Che filed Critical Oesterreichischer Ver Fuer Che
Application granted granted Critical
Publication of AT37843B publication Critical patent/AT37843B/en

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  • Filtering Materials (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  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- 
 EMI1.1 
 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 
 EMI1.2 
   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 
 EMI1.3 
 beschriebenen Reinigungsverfahrens die Tücher geschont und können daher länger verwendet werden. 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 



  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
 EMI1.1
 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
 EMI1.2
   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
 EMI1.3
 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)

PATENT-ANSPRUCH : Verfahren zum Reinigen von Filtertüchern, nach dem Abpressen eines aus Karbonaten der Erdalkalien und des Magnesiums bestehenden Schlammes, dadurch gekennzeichnet, dass die gebrauchten Tücher mit, mit Kohlensäure gesättigtem Wasser behandelt werden. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: Method for cleaning filter cloths after pressing a sludge consisting of carbonates of alkaline earths and magnesium, characterized in that the used cloths are treated with water saturated with carbonic acid. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT37843D 1908-08-01 1908-08-01 Procedure for cleaning filter cloths. AT37843B (en)

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)

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