Biofuels Sub-task Presentation II | Summary and Q&A

TL;DR

A progress report on integrating biomass production with a nuclear reactor complex to produce Fischer-Tropsch fuel, discussing the overall design and key processes involved.

Key Insights

• ⛽ The project aims to integrate biomass production with a nuclear reactor complex to produce Fischer-Tropsch fuel.
• 😋 Switchgrass was chosen as the feedstock due to its viability, high energy density, and lack of competition with food crops.
• 🫢 The silver gasification process is used to avoid combustion with air, while the acid gas removal process removes impurities from the syngas.
• 👁️‍🗨️ The Fischer-Tropsch reaction takes place in a slur phase bubble column reactor, producing liquid fuel products.
• 🫗 Distillation and refining processes further purify the liquid fuel products.
• 📽️ Carbon dioxide management is a crucial consideration in the project.
• 🥵 Heat exchange and hydrogen supply are essential for various processes.

Transcript

the following content is provided under a Creative Commons license your support will help MIT open courseware continue to offer high quality educational resources for free to make a donation or view additional materials from hundreds of MIT courses visit MIT opencourseware at ocw.mit.edu good morning ladies and gentlemen my name is Alex Salazar I'm... Read More

Questions & Answers

Q: Why was switchgrass chosen as the feedstock for biomass production?

Switchgrass was chosen due to its high viability in dry climates, easy multiplication, high energy density, and lack of competition with food crops.

Q: What is the purpose of the silver gasification process in the project?

The silver gasification process is used to avoid combustion with air, which dilutes the synthetic gas (syngas), and instead uses an oxygen air separation unit to generate the necessary heat for gasification.

Q: How is acid gas, such as carbon dioxide and hydrogen sulfide, removed from the syngas?

Acid gas removal is achieved through a series of processes, including cyclones for removing solid particles, a water scrubber to remove impurities, and an amine plant and low-cath plant for further purification.

Q: How is the Fischer-Tropsch reaction carried out in the project?

The Fischer-Tropsch reaction takes place in a slur phase bubble column reactor, where syngas is passed through a catalyst suspended in inert oil to produce liquid products, such as gasoline and diesel blend stocks.

Summary & Key Takeaways

• The project aims to integrate biomass production with a nuclear reactor complex to produce Fischer-Tropsch fuel.

• The process involves various steps such as switchgrass densification, gasification, acid gas removal, Fischer-Tropsch reaction, distillation, and refining.

• Key considerations include carbon dioxide management, heat exchange, and hydrogen supply.