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Influence of Operating Temperature on the Corrosion of UNS S30400 Steel under Catalytic Hydrodeoxygenation of Pyrolysis Oil by Supercritical Ethanol with In-situ Hydrogen Source

Picture for Influence of Operating Temperature on the Corrosion of UNS S30400 Steel under Catalytic Hydrodeoxygenation of Pyrolysis Oil by Supercritical Ethanol with In-situ Hydrogen Source
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Bio-oils are renewable and clean energy sources, which can be used to partial or completely replace fossil fuel. Fast pyrolysis is a promising and by far the only industrially realized approach to convert dry biomass into biofuels, particularly the liquid bio-oils. However, the poor quality of fast pyrolysis oil including thermal instability, high viscosity and acidity, high oxygen and water content, and low heating value makes it hard to be directly used as transportation fuels.

Product Number: 51323-19012-SG
Author: Mingyuan Zhang, Minkang Liu, Xue Han, Yimin Zeng, Chunbao Xu
Publication Date: 2023
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$20.00

Catalytic hydrodeoxygenation (HDO) is a promising approach to upgrade crude pyrolysis oil to achieve the ambitious target of partial or complete replacement of fossil fuel with bio-oil. Our recent study indicates that formic acid is an alternative in-situ hydrogen source to effectively improve oil properties for final application and significantly reduce cost and safety concerns compared to using high pressure H2 gas. In this work, corrosion of UNS S30400 (a candidate reactor constructional steel) was investigated under the catalytic HDO of crude pyrolysis oil by supercritical ethanol and formic acid in the temperature range of 80 to 350 °C to simulate the commercialization of the developed HDO technology. After 10 cycles exposure, the corrosion rate of the steel was evaluated using direct weight change and weight loss measurements. The formed corrosion products were examined with modern characterization techniques (SEM, EDS, XRD) to advance the corrosion mechanism.

Catalytic hydrodeoxygenation (HDO) is a promising approach to upgrade crude pyrolysis oil to achieve the ambitious target of partial or complete replacement of fossil fuel with bio-oil. Our recent study indicates that formic acid is an alternative in-situ hydrogen source to effectively improve oil properties for final application and significantly reduce cost and safety concerns compared to using high pressure H2 gas. In this work, corrosion of UNS S30400 (a candidate reactor constructional steel) was investigated under the catalytic HDO of crude pyrolysis oil by supercritical ethanol and formic acid in the temperature range of 80 to 350 °C to simulate the commercialization of the developed HDO technology. After 10 cycles exposure, the corrosion rate of the steel was evaluated using direct weight change and weight loss measurements. The formed corrosion products were examined with modern characterization techniques (SEM, EDS, XRD) to advance the corrosion mechanism.

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Product Number: 51322-18136-SG
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