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SÄKAPHEN Coating of Impellers

Superior Protection against Chemical Attack

Impellers are a part of the rotating equipment family and are used to both increase the pressure and flow of a myriad of mediums. Used inside ducts in all manner of industries including refineries, power plants, petrochemical facilities, chemical processing plants and general industrial processing where exhaust gases can reach temperatures of 200°C.  These aggressive gases combined with high levels of moisture lead to condensation in periods of inactivity during the processes, shut downs or while general maintenance is being carried out.

Three Impeller Wheels mounted on a shaft, coated with Si 57 E, during application of the coating
Three Impeller Wheels mounted on a shaft, coated with Si 57 E, during application of the coating

A subsequent advantage of applying SÄKAPHEN linings or coatings to Impellers or other rotating equipment is the formation of a thin, uniform protective layer where minimal additional mass is added to the impeller or turbine therefore reducing potential balancing issue during commissioning and operation. The linings and coatings are not affected by temperature fluctuations and offer temperature resistance up to 200°C and in certain instances, peaks above this depending on the medium. Such is the enhanced adhesion to the substrate the linings or coatings are not affected by high centrifugal forces. Finally, the lining or coating can be easily removed by abrasive blasting should the need arise for Non-Destructive Testing or Examination (NDT / NDE) and the lining or coating can be subsequently repaired or re-lined or re-coated as required.

Impeller coated with Si 14 E with the corresponding Impeller Casing lined with Si 14 E as well
Impeller coated with Si 14 E with the corresponding Impeller Casing lined with Si 14 E as well
Detailed view of the space between the Front and the Back Plate of an Impeller coated with Si 14 E
Detailed view of the space between the Front and the Back Plate of an Impeller coated with Si 14 E

SÄKAPHEN linings and coatings have proven unrivalled performance in challenging extreme environments as can be found in thermal power plants, waste incinerators and various areas encompassing aggressive exhausts. The SÄKAPHEN Heat Cured Phenolics / Epoxy-Phenolics range guarantees protection against strongly acidic and alkali media, especially at high temperatures in addition to exceptional chemical resistance in conditions of increased media concentration.

Further typical applications

Impeller with approx. 2800mm diameter coated with Si 14 E
Impeller with approx. 2800mm diameter coated with Si 14 E
Shaft of an impeller, separately supplied and coated with Si 14 E
Shaft of an impeller, separately supplied and coated with Si 14 E
Two Impeller Wheels mounted on a shaft, coated with Si 14 EG
Two Impeller Wheels mounted on a shaft, coated with Si 14 EG
Impeller casing lined with Si 14 E
Impeller casing lined with Si 14 E
Cover of an impeller casing lined with Si 14 E
Cover of an impeller casing lined with Si 14 E
Detailed view of an Impeller Casing lined with Si 14 E
Detailed view of an Impeller Casing lined with Si 14 E
Three Impeller Wheels mounted on a shaft, coated with Si 57 E, during application of the coating
Four Impeller Wheels mounted on a shaft, coated with SÄKATONIT Extra AR
Front Plate of an Impeller coated with Si 14 E
Front Plate of an Impeller coated with Si 14 E
Back Plate of an Impeller coated with Si 14 E
Back Plate of an Impeller coated with Si 14 E
Detailed view of the Eye Ring of an Impeller coated with Si 14 E
Detailed view of the Eye Ring of an Impeller coated with Si 14 E
Impeller with a very small gap between Front and Back Plate, coated with Si 14 E
Impeller with a very small gap between Front and Back Plate, coated with Si 14 E
Impeller coated with ceramic filled Baked Phenolic Si 17 N exposed to fume gases from waste incineration at approx. 130°C
Impeller coated with ceramic filled Baked Phenolic Si 17 N exposed to fume gases from waste incineration at approx. 130°C
Impeller coated with Si 57 E
Impeller coated with Si 57 E
Detailed view of the space between the Front and the Back Plate of an Impeller coated with Si 57 E
Detailed view of the space between the Front and the Back Plate of an Impeller coated with Si 57 E
Detailed view of rivets used to hold the Impeller Blades in place, coated with Si 57 E
Detailed view of rivets used to hold the Impeller Blades in place, coated with Si 57 E
Rotor Casing installed in an Exhaust System from a Chemical lab lined with a special quality Si 57 E
Rotor Casing installed in an Exhaust System from a Chemical lab lined with a special quality Si 57 E
Corresponding Rotor installed in an Exhaust System from a Chemical lab coated with a special quality Si 57 E
Corresponding Rotor installed in an Exhaust System from a Chemical lab coated with a special quality Si 57 E

Feel free to contact us for technical advice.

For any specific chemical resistances, fields of use, technical questions or other lining and coating queries, please feel free to contact us for technical advice.

Tel.: +49 20439470 or Email: info[at]saekaphen.de

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