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Case Study: SÄKAPHEN® Coating of Methanol Reboiler U Tube Bundle
SÄKAPHEN® Si14E® Coating of 240 Tube Methanol Reboiler U Tube Bundle
International Energy Producer focused in North America, Europe and Australia
Scope of Work
Preparing and Coating External Surfaces of Tubes, Baffles and Supports
Produced Water / Methanol with a Chloride Content of 13,000ppm operating at 113°C
SÄKAPHEN® Si14E® at a nominal DFT of 200 microns
The U Tube Bundle tube externals, baffles, and supports were initially pre-cleaned by jet washing with a degreasing agent to remove surface deposits and contamination prior to being grit blasted to a cleanliness standard of Sa3 in accordance with ISO 8501-1:2007 with an average surface profile of 40 to 60 microns. The lining is applied from solution in a series of thin layers, with
an air dry period between coats and a low temperature stoving to assist solvent release and part polymerise the resin. Conventionally 25-40 microns are applied at each coating application. When the lining has attained the specified thickness and continuity, the final cure is completed by placing the U Tube Bundle in the stoving oven and raising the temperature to 210°C. The exact duration and the rate of temperature rise is dependant on the mass of the item being stoved. The lining is tested for thickness, continuity and cure once cooled.
One of the SÄKAPHEN® range of thermal hardening SÄKAPHEN® Resins, SÄKAPHEN® Si14E® is a Phenol Formaldehyde resin lining applied to pipework, heat exchangers, condensers, transport containers, meter provers and other diverse equipment operating at temperatures up to 180°C in certain cases.
Completed SÄKAPHEN® Si14E® Coated Methanol Reboiler U Tube Bundle