Flues for industrial chimneys

Abstract

A novel flue design using titanium sections, affording rapid construction, corrosion resistance for low maintenance and inertness over a wide range of operating conditions. The lower density of titanium versus steel or nickel alloys makes this flue design structurally possible and results in lower cost flues compared to flues of other alloys.

1 . A flue for use in industrial chimneys to provide corrosion resistance to the passage of corrosive gas through the chimneys, said flue comprising a plurality of formed sections within the chimney, said sections comprising commercially pure titanium or a titanium-base alloy and connected to each other to form an integral flue.  
   
   
       2 . The flue of  claim 1 , wherein the plurality of formed sections are hung from the top of the chimney.  
   
   
       3 . The flue of  claim 1 , wherein said plurality of formed and connected sections include cylindrical sections.  
   
   
       4 . The flue of  claim 3 , wherein each said cylindrical sections include butt welded edges for completion thereof.  
   
   
       5 . The flue of  claim 4 , wherein said cylindrical sections are joined end to end to form said flue.  
   
   
       6 . The flue of  claim 5 , wherein said cylindrical sections are joined end to end by welding.  
   
   
       7 . The flue of  claim 1 , wherein each said section includes flanges connected by bolts to adjacent sections using a gasket between the sections for sealing off the corrosive gas.  
   
   
       8 . The flue of  claim 1 , wherein the titanium-base alloy are higher strength titanium alloys.