Corrosion Compatibility of Stainless Steels and Nickel in Pyrolysis Biomass-Derived Oil at Elevated Storage Temperatures

• Published in: Sustainability Vol. 15; no. 1; p. 22
• Main Authors: Jun, Jiheon, Su, Yi-Feng, Keiser, James R., Wade, John E., Kass, Michael D., Ferrell, Jack R., Christensen, Earl, Olarte, Mariefel V., Sulejmanovic, Dino
• Format: Journal Article
• Language: English
• Published: Basel MDPI AG 01.01.2023
• Subjects: 09 BIOMASS FUELS; Alloys; bio-oil; Biomass; biomass pyrolysis; Carbon; Compatibility; Corrosion; corrosion compatibility; Corrosion resistance; Corrosion resistant steels; Corrosion tests; Electron microscopy; Exposure; Forest biomass; Forest residues; Low temperature; MATERIALS SCIENCE; nickel; Oil; Pyrolysis; Raw materials; Stainless steel; Sulfur content; Viscosity; Wire; United States > US
• ISSN: 2071-1050; 2071-1050
• DOI: 10.3390/su15010022

Corrosion compatibility of stainless steels and nickel (Ni200) was assessed in fast pyrolysis bio-oil produced from pyrolysis of high ash and high moisture forest residue biomass. Sample mass change, ICP-MS and post-exposure electron microscopy characterization was used to investigate the extent of corrosion. Among the tested samples, type 430F and type 316 stainless steels (SS430F and SS316) and Ni200 (~98.5% Ni) showed minimal mass changes (less than 2 mg∙cm−2) after the bio-oil exposures at 50 and 80 °C for up to 168 h. SS304 was also considered to be compatible in the bio-oil due to its relatively low mass change (1.6 mg∙cm−2 or lower). SS410 samples showed greater mass loss values even after exposures at a relatively low temperature of 35 °C. Fe/Cr values from ICP-MS data implied that Cr enrichment in stainless steels would result in a protective oxide layer associated with corrosion resistance against the bio-oil. Post exposure characterization showed continuous and uniform Cr distribution in the surface oxide layer of SS430F, which showed a minimal mass change, but no oxide layer on a SS430 sample, which exhibited a significant mass loss.