| About this Abstract |
| Meeting |
MS&T21: Materials Science & Technology
|
| Symposium
|
Advanced Materials for Harsh Environments
|
| Presentation Title |
Towards a Fundamental Understanding of Surface Interactions and Degradation Mechanism in Bio-feedstock-induced Corrosion |
| Author(s) |
Soheil Daryadel, Deborah Liu, Hyosung An, Samyukta Shrivastav, Siddhesh Shevade, Tom Eason, Qian Chen, Daniel Krogstad, Jessica A. Krogstad |
| On-Site Speaker (Planned) |
Soheil Daryadel |
| Abstract Scope |
The incorporation of bio-feedstock in fuel production due to the current global regulatory condition and net-zero emission targets fundamentally changes the refining process and affects the refinery infrastructure by introducing new and possibly more aggressive corrosion and degradation mechanisms. This presentation focuses on the interactions between bio-feedstock materials and structural surfaces to better understand the early-stage corrosion. High-throughput corrosion tests combined with metallurgical and chemical characterizations are employed to understand how bio-feedstocks encourage corrosion by identifying mechanisms linked to the intrinsic and extrinsic properties. The hydrolysis of triglycerides and the formation of free fatty acids in the bio-feedstock results in large carbon-rich aggregates at the surface, accelerated metal corrosion, which together give rise to carbon-rich corrosion products. Considering the complex nature of the processing and refinery conditions, this mechanistic insight can provide meaningful guidance towards the safe integration of highly sustainable, low-carbon feedstocks via existing processing infrastructure. |