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| Home >> Systems >> Digesters |
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CONTINUOUS DIGESTERS |
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The carbon steel continuous digesters experience both general corrosion and stress corrosion cracking in caustic environments . The corrosion rate of the immersed surface of steel digester in contact with hot caustic liquor may be characterized by the electrochemical potential of digester which varies throughout an operating digester. It is generally within the ‘Active Corrosion’ and/or ‘Cracking’ range. |
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This corrosion related damage can be mitigated with Anotection®. Our anodic protection system monitors the electrochemical potential of the digester wall and moves the electrochemical potential from the active corrosion and cracking zones into the passivation zone. Once the electrochemical potential is within the passivation range, the Anotection® system acts as a single loop controller to maintain passivation.
Corrosion Service Co. Ltd. started installation of the first anodic protection system in digesters in the late 1950’s. The first system in a continuous digester was installed in 1978.
Our company supports all aspects of project execution to ensure long term system effectiveness.
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Detailed electrical/mechanical drawings
Commissioning the system concurrent with training seminars for operating and maintenance staff
Operation, alarm and auto shutdown
Maintenance
Remote Monitoring
The Remote Monitoring System is an internet based computer monitoring system offers clients several value-added benefits including: |
Support from Corrosion Service’s system expertise
Relief for mill personnel of the tedious monitoring task, requiring involvement only when a system fault occurs
Continuous recording of Anotection® system operation to facilitate quality control and performance evaluation
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| Remote Monitoring Hardware
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| Current Source for Anodic Protection System |
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