Corrosion-resistant filter element

Abstract

The invention relates to a filter element with improved corrosion and heat resistance and structural properties to be used in filtering solids containing material in order to achieve a filter cake of solid material on at least one external surface area of the filter element. According to the invention, at least one part of the external surface area of the filter element separated from the external surface area for forming the filter cake is provided with at least one corrosion and heat resistant polymer-based material.

1 . Filter element with improved corrosion and heat resistance and structural properties to be used in filtering solids containing material in order to achieve a filter cake of solid material on at least one external surface area of the filter element, wherein at least one part of the external surface area of the filter element separated from the external surface area for forming the filter cake is provided with at least one corrosion and heat resistant polymer-based material.  
     
     
         2 . Filter element according to the    claim 1   , wherein the polymer-based material is a compressing material between the frame and the filter element.  
     
     
         3 . Filter element according to the    claim 1    or    2   , wherein the the polymer-based material is a bonding material for the separate parts of the filter element.  
     
     
         4 . Filter element according to the    claim 1   ,    2    or  3 , wherein the polymer-based material consists essentially of thermoplastic polymeric material.  
     
     
         5 . Filter element according to the    claim 1   ,    2    or  3 , wherein the polymer-based material consists essentially of grafted halogenated polyolefins.  
     
     
         6 . Filter element according to the    claim 1   ,    2    or  3 , wherein the polymer-based material consists essentially of grafted perhalogenated polyolefins.  
     
     
         7 . Filter element according to the    claim 1   ,    2    or  3 , wherein the polymer-based material consists essentially of fluoroplastic material.  
     
     
         8 . Filter element according to the    claim 1   ,    2    or  3 , wherein the polymer-based material consists essentially of thermofusible polymeric material.  
     
     
         9 . Filter element according to the    claim 1   ,    2    or  3 , wherein the polymer-based material consists essentially of fluoroplastic materials.  
     
     
         10 . Filter element according to any of the preceding claims, wherein the filter element is made of a ceramic material.  
     
     
         11 . Filter element according to any of the preceding claims  1 - 9 , wherein the filter element is made of a metallic material.  
     
     
         12 . Filter element according to any of the preceding claims  1 - 9 , wherein the filter element is made of a carbonic material.