Metal dusting corrosion has been studied in Statoil since the decision to build the Tjeldbergodden Methanol Plant was made. In 1994 Statoil started an extensive research project aiming to find the best available materials for the equipment subjected to metal dusting corrosion. Investigations are still ongoing with both plant and laboratory testing. More than 40 different alloys from 12 vendors have been tested during the length of the project.

In general, nickel-based alloys appear to have the best metal dusting resistance, although some iron-based alloys have outperformed nickel-based materials. The overall picture may appear confusing due to the many variables involved, such as material factors, process parameters and operation variables. Laboratory testing alone is not sufficient to predict the metal dusting resistance of a material, even when highly sophisticated equipment is employed. Long term plant exposure in combination with laboratory exposures will give good indications about the metal dusting resistance of components in syngas.

Subject
Pits, Test methods, Materials, Metal surfaces, Nickel based alloys, Oxide formation, Walls, Syngas, Metal dusting, Carbon, Methanol, Elements, Alloys
Keywords:
Metal Dusting, High Temperature Corrosion, Plant Testing, Carburization, Alloying Elements
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2011
Association for Materials Protection and Performance (AMPP)
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