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Protection of Agitator Shaft in Chemical Plant

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Protection of Agitator Shaft in Chemical Plant

Industry                       

Petrochemical

 

Date

July 2017

 

Substrate                      

Duplex Stainless Steel

 

Products                       

Chem-tect™ RB 300 Series – Vinyl ester Glassflake coating – providing excellent resistance against corrosion and abrasion, high temperatures and severe chemical environments.

 

Environment               

Installation of new mixing tank containing high pH contents at 60°C, with 50% solid contents and 50% iron hydroxide.

 

Challenge                     

Abrasion protection on leading edges using composites and insitu touch up after re-assembly.

 

Chemco’s Solution    

Specification and application of RB 300, a high temperature and chemically resistant coating system to get the longest life out of the new plant

 

Duplex Shafts Blasted with First Coat Applied

Application of Final Coating

Coated and installed

Waste Processing Plant

 

Scope                             

Abrasive blast to AS 1627.4, class SA 2.5 with a nominal 60µm profile.

application of RB 300 in 2 coats with a nominal thickness of 1,000µm.

Application of 1 layers of 250g/m² multi directional mat CSM

Post cure to 60°C for 4 hours as required to manufacturers specifications

 

Results                         

Quick turn-around allowing minimal disruption to meet project milestone targets.

Strict QA requirements including DFT and holiday testing to the required voltage to ensure many years of high performance

This application will provide at least 10 years of corrosion free service with minimal maintenance