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Corrosion Study Of Austenitic Stainless Steels During HDO Upgrading Process By Supercritical Ethanol Under Different Hydrogen Resource Conditions

Corrosion Study Of Austenitic Stainless Steels During HDO Upgrading Process By Supercritical Ethanol Under Different Hydrogen Resource Conditions
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Biofuels are renewable energy resources to replace fossil fuels since the latter are depleting and their application lead to serious environmental impacts.1 Fast pyrolysis is an industrial approach to convert a larger amount of raw biomass into bio-oils in a timely fashion. However, their poor qualities, such as low thermal stability, high water and acid contents, and low heating value, make them not ready f to be as transportation fuels directly.2,3 Moreover, their high water content and acidity can introduce corrosion concern during handling, storage , transportation and upgrading.4 

Product Number: 51322-18031-SG
Author: Mingyuan Zhanga, Kaiyang Lib, Xue Hanb, Yimin Zengb, Chunbao Xua
Publication Date: 2022
Industries: Corrosion Monitoring and Control , Coatings
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Crude pyrolysis bio-oils are recognized as a potential source to replace conventional fuels and chemicals. However, their high water content, viscosity and acidity significantly hinder industrial applications. Hydrodeoxygenation Upgrading (HDO) of pyrolysis bio-oil, can remarkably improve their quality and advanced the application of being as an alternative fuel or chemical. During the upgrading, the high contents of water and acids in of the crude bio-oil may introduce unwanted corrosion damage to the processing equipment. This paper investigated the corrosion performance of two candidate constructional steels (UNS S31603 and UNS S30400) under the HDO processes using supercritical ethanol solvent, NiMoW/Al2O3 catalyst and different hydrogen resources (hydrogen gas or formic acid) at 325 °C.

Crude pyrolysis bio-oils are recognized as a potential source to replace conventional fuels and chemicals. However, their high water content, viscosity and acidity significantly hinder industrial applications. Hydrodeoxygenation Upgrading (HDO) of pyrolysis bio-oil, can remarkably improve their quality and advanced the application of being as an alternative fuel or chemical. During the upgrading, the high contents of water and acids in of the crude bio-oil may introduce unwanted corrosion damage to the processing equipment. This paper investigated the corrosion performance of two candidate constructional steels (UNS S31603 and UNS S30400) under the HDO processes using supercritical ethanol solvent, NiMoW/Al2O3 catalyst and different hydrogen resources (hydrogen gas or formic acid) at 325 °C.

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