Dresser-Rand Engineered Equipment Coatings, EEC-A2 is utilized as an anti-foulant for reciprocating compressor valves. The coating is a multi-layer metallic-ceramic-polymeric system which includes a galvanic sacrificial base as a second line defensive layer to protect process equipment from corrosive attack. This base coating is sealed with an anti-stick polymer impregnated top layer to reduce the tendency of fouling deposits to adhere to the unit surfaces. This multilayer combination reduces the maintenance downtime to remove process clogging deposits, extends the operating life of unit components and increases unit online availability.

Applications

EEC-A2 is designed to be used on industrial compressor and steam turbine components. The coating provides a smooth finished surface to reduce the adherence of process foulants in the operating range of 2-9.5 pH.

All coating applications are reviewed by Dresser-Rand for applicability to the design and service conditions of the unit. Components that may be coated include, but are not limited to, the following:

• Compressor Impellers
• Diaphragms
• Inlet Guides
• Guide Vanes
• Diffusers
• Turbine Blades
• Wheels
• Cases

Typical Coating Properties

Average Thickness 3-5 mils
Surface Roughness <40 Ra
Coefficient of Friction >.02 (on new surfaces)
Max Continuous Operating Temp 500ºF
Peak Operating Temp 550ºF
Coating Adhesion (ASTM D2247) Excellent No pick-off
Thermal Shock, Impact Survival, Solvent Resistance Excellent