2014 GCEP Technical Talks: Fossil-Based Energy Systems - Turgut Gur

TL;DR

This presentation discusses the utilization and conversion of solid fuels in fuel cells, focusing on the challenges and opportunities in the field.

Transcript

okay thank you Chris I will go for Edward why not just to keep the continuity well good morning everyone thanks for coming it's a pleasure to be here like to thank Sally Benson and Richards assumed to that gives up the opportunity to share with you our research work let me recognize my co-workers the people on the first row of actually are the ones... Read More

Key Insights

• 🍉 Coal is a widely used source of energy globally, and the conversion of coal into clean energy using fuel cells presents significant advantages in terms of efficiency and CO2 production.
• ⛽ Carbon fuel cells offer a promising solution for the efficient conversion of solid fuels into electricity and hydrogen, with the potential to address major challenges in the energy sector.
• ⛽ The development of catalytic anodes and solid sorbents is crucial in improving the performance and stability of fuel cells in the presence of impurities, such as sulfur.
• 😒 The use of carbon as a reactive support for solid sorbents can help in capturing and reducing sulfur contamination in fuel cells, ensuring their efficient operation.
• 😘 The research and development of carbon fuel cells and related technologies have the potential to revolutionize the energy industry, particularly in the transition to low-carbon power generation.
• ⛽ Modularity and fuel flexibility are key advantages of carbon fuel cells, making them suitable for distributed power generation and utilization of local fuels.

Questions & Answers

Q: How does the conversion of solid fuels in fuel cells differ from conventional fuel cells?

Conventional fuel cells primarily handle gaseous fuels like hydrogen, while solid fuel conversion in fuel cells involves dealing with the challenge of handling and utilizing solid fuels like coal.

Q: What is the main advantage of carbon fuel cells?

Carbon fuel cells provide a high ceiling for efficiency, as the theoretical efficiency of this conversion is 100%. By extracting electrical work from the system, the primary efficiency of carbon fuel cells can be significantly increased, resulting in less CO2 production.

Q: What are the challenges in converting coal into electricity and hydrogen in fuel cells?

The main challenges include dealing with the large particle sizes of coal, ensuring atomic-scale contact at the electrode site for effective electrochemical reactions, and mitigating impurities such as sulfur that can degrade the performance of the fuel cells.

Q: How does the utilization of solid sorbents help in reducing sulfur contamination in fuel cells?

Solid sorbents can be dispersed on reactive supports like carbon to capture sulfur and reduce its concentration to below 10 ppm. This helps in maintaining the stability of oxide-based anode materials in the presence of sulfur.

Summary & Key Takeaways

• The primary focus of the research is the utilization and conversion of solid fuels in fuel cells to generate electricity and hydrogen in a more efficient and environmentally friendly way.

• Coal is widely used globally for electricity production, and the goal is to convert coal into clean energy through carbon fuel cells.

• Carbon fuel cells have high efficiency and can directly convert carbon and oxygen into carbon dioxide and electricity, without the need for expensive carbon capture and separation processes.