Cathodic Protection Proposed for Vapor Area in Pulp Digesters

Proposes a system of cathodic protection for pulp digester tanks that will protect not only tank areas covered by liquid but also areas covered by vapor from liquid contents in tank. Outlines five requirements such a system should have. Describes inner lining of steel sheet used as anode with filler material between anode and tank wall. Filler suggested is cement and plaster of parts to achieve a porous material that will permit electrical conductance paths of moisture vapor through the material. Give details of mounting anode sheets to tank and also a floating type platform for use inside tank to install and replace anode sheets. 5.2.1, 8.5.3