Surface Engineering for the Ethylene Industry Coking is a large and growing problem in the Ethylene Industry. Coking damages tubes and reduces furnace performance. CoatAlloy™ is an engineered coating system which provides the necessary surface characteristics to mitigate catalytic coke formation. CoatAlloy™ is:
- Inert top layer
- Continuous and adherent surface oxide
- Able to regenerate under pyrolysis conditions
- Stable at high temperatures
- Impervious to carbon
Tube inner surface coated with CoatAlloy™ utilizing the EPVD® process satisfy the demands of Ethylene service by providing a continuous, adherent inert surface that mitigates catalytic coke formation.
The CoatAlloy™ coatings resist carburization which brings about changes in creep strength, ductility and toughness. They are self healing and have sufficient hardness and toughness to resist erosion by coke particles; they also withstand the thermal shock and cycling inherent in decoking.