Understanding the Corrosion Performance and Mechanism of Stainless and Carbon Steels in Different Storage and Transportation of Pyrolysis Oil Environments

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This study assessed the suitability of two candidate materials for use in fast pyrolysis reactors and their core components. An immersion test conducted at temperatures of 60 °C and 80 °C over a 7- day period revealed significant corrosion in carbon steel A516-70, with corrosion rates reaching up to 6.24 mm/year. In contrast, UNS S32205 displayed impressive resistance to corrosion, even at 80 °C. Fe2O3 have been identified as the major corrosion products on A516-70, chromium oxides and spinel oxides were found on UNS S32205. The primary corrosive agents were identified as organic acids present in the pyrolysis oil, owing to the oil's high total acidic number and low pH value. Ongoing microscopic characterizations aim to provide a more comprehensive understanding of the underlying corrosion mechanisms.

Product Number: 51324-21226-SG

Author: Minkang Liu; Xue Han; Yimin Zeng

Publication Date: 2024

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carbon steel (155)
,
stainless steel (135)
,
corrosion (452)
,
pyrolysis oil (3)

Understanding the Corrosion Performance and Mechanism of Stainless and Carbon Steels in Different Storage and Transportation of Pyrolysis Oil Environments

Association for Materials Protection and Performance