Corrosion Compatibility of Stainless Steels and Nickel in Pyrolysis Biomass-Derived Oil at Elevated Storage Temperatures
SUSTAINABILITY(2023)
摘要
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 (similar to 98.5% Ni) showed minimal mass changes (less than 2 mg.cm(-2)) after the bio-oil exposures at 50 and 80 degrees 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 degrees 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.
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关键词
biomass pyrolysis,bio-oil,stainless steel,corrosion compatibility,Nickel
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