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11144 Tjeldbergodden Methanol Plant: Metal Dusting Investigations

Picture for 11144 Tjeldbergodden Methanol Plant: Metal Dusting Investigations
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Product Number: 51300-11144-SG
ISBN: 2011 11144 CP
Author: Elisabeth Slevolden, Jorun Zahl Albertsen
Publication Date: 2011
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$20.00
$20.00
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 ironbased 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.

Key words: Metal Dusting, High Temperature Corrosion, Plant Testing, Carburization, Alloying Elements
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 ironbased 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.

Key words: Metal Dusting, High Temperature Corrosion, Plant Testing, Carburization, Alloying Elements
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This paper studies the effect of oxygen in methanol on the structures and growth kinetics of iron sulfide scales. Gravimetric weight analysis was used to evaluate the corrosion mechanisms and rates. Scanning Electron Microscope/ Energy Dispersive X-ray Spectrometry (SEM/EDX), Optical Microscope and X-ray Diffraction (XRD) were used to analyze the scale.

 
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