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E - Log I tests on oil Production Wells Case Study

Product Number: 51321-16266-SG
Author: Manuela Nimmervoll/Gregor Mori/Roland Haubner/Stefan Hönig/Wolfgang Hofer
Publication Date: 2021
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The alloys K90941 and N08811 were tested under conditionssimulating a pyrolysis process of post-consumer plastics. Impurities in the plastic feedstock like chlorine containing materials or organic components yield HCl and H2S respectively during the cracking process. The reactor materialmustbe able to withstand these harsh corrosive conditions. In lab-scale test equipment, process conditions of the reactor zone of the pyrolysis process were simulated at temperatures of 420 °C and 580 °C for 72 hours. The gas atmosphere consisted of either 200 ppm or 20000 ppm H2S and 3.8 vol% HCl, 1.9 vol% CO2, 0.3 vol% CO, 2.8 vol% H2, bal. N2.After the corrosion experiments the samples were analyzed by metallography, SEM/EDX and XRD. Additionally, the mass loss was evaluated. Results show that the ferritic K90941 is moreaggressivelyattacked than the austenitic N08811 and that for both materials the mass loss rises with increasing H2S content in the gas atmosphere and increasing temperature.

Key words: High temperature corrosion; hydrogen chloride; hydrogen sulfide; stainless steel

The alloys K90941 and N08811 were tested under conditionssimulating a pyrolysis process of post-consumer plastics. Impurities in the plastic feedstock like chlorine containing materials or organic components yield HCl and H2S respectively during the cracking process. The reactor materialmustbe able to withstand these harsh corrosive conditions. In lab-scale test equipment, process conditions of the reactor zone of the pyrolysis process were simulated at temperatures of 420 °C and 580 °C for 72 hours. The gas atmosphere consisted of either 200 ppm or 20000 ppm H2S and 3.8 vol% HCl, 1.9 vol% CO2, 0.3 vol% CO, 2.8 vol% H2, bal. N2.After the corrosion experiments the samples were analyzed by metallography, SEM/EDX and XRD. Additionally, the mass loss was evaluated. Results show that the ferritic K90941 is moreaggressivelyattacked than the austenitic N08811 and that for both materials the mass loss rises with increasing H2S content in the gas atmosphere and increasing temperature.

Key words: High temperature corrosion; hydrogen chloride; hydrogen sulfide; stainless steel

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Product Number: 51300-06071-SG
ISBN: 06071 2006 CP
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