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Elemental Sulfur Corrosion Behavior in the Presence of Sulfur Solvent and Monoethylene Glycol

Picture for Elemental Sulfur Corrosion Behavior in the Presence of Sulfur Solvent and Monoethylene Glycol
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Product Number: 51315-5930-SG
ISBN: 5930 2015 CP
Author: Najmiddin Yaakob
Publication Date: 2015
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A series of autoclave corrosion experiments have been carried out to simulate as closely as possible the conditions of a strongly sour gas field in order to gather information about general and localized corrosion. The main three parameters which have been studied in this work were the effect of elemental sulfur the interaction between elemental sulfur and sulfur solvent and the possible interaction between Monoethylene Glycol (MEG) elemental sulfur and sulfur solvent. The experimental works were done in a 20L hastelloy autoclave especially design for high total pressure at 25 bars with 4 and 10 bars of H2S and CO2 partial pressure respectively. The temperature for the experiment was set at 40?C for 21 days of exposure duration. The experimental work included weight loss calculation and characterization of the corrosion product films forming under this condition. Samples with elemental sulfur in the water phase without the presence of MEG suffered less localized corrosion attack at 6 mm/yr. In the presence of MEG higher localized corrosion rate at 25 mm/yr was determined. The sulfur solvent reduced the localized corrosion rate to 2 mm/yr.Keywords: Elemental sulfur Monoethylene Glycol (MEG) Sulfur solvent
A series of autoclave corrosion experiments have been carried out to simulate as closely as possible the conditions of a strongly sour gas field in order to gather information about general and localized corrosion. The main three parameters which have been studied in this work were the effect of elemental sulfur the interaction between elemental sulfur and sulfur solvent and the possible interaction between Monoethylene Glycol (MEG) elemental sulfur and sulfur solvent. The experimental works were done in a 20L hastelloy autoclave especially design for high total pressure at 25 bars with 4 and 10 bars of H2S and CO2 partial pressure respectively. The temperature for the experiment was set at 40?C for 21 days of exposure duration. The experimental work included weight loss calculation and characterization of the corrosion product films forming under this condition. Samples with elemental sulfur in the water phase without the presence of MEG suffered less localized corrosion attack at 6 mm/yr. In the presence of MEG higher localized corrosion rate at 25 mm/yr was determined. The sulfur solvent reduced the localized corrosion rate to 2 mm/yr.Keywords: Elemental sulfur Monoethylene Glycol (MEG) Sulfur solvent
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