Motivation & Background

Reactive metals such as iron (Fe), aluminum (Al), and silicon (Si) have emerged as promising carbon-free energy carriers for industrial heat and power generation. However, their practical use depends critically on the efficient combustion of these materials. In cyclic oxidation–reduction processes, metal microparticles are first combusted in an oxidizing atmosphere to form metal oxide particles, which are then reduced back to their metallic state using hydrogen. To achieve higher power outputs, combustion is commonly carried out under elevated pressure conditions. However, pressure significantly affects transport and reaction processes, influencing both ignition temperature and the formation of gas-phase nanoparticles. In particular, these nanoparticles are difficult to capture, leading to unavoidable material losses. Such losses directly compromise the circularity and sustainability of recyclable metal fuel systems and represent one of the key challenges in metal combustion technology.

Our previous studies have established a well-controlled pressure chamber for combustion experiments. Building on this facility, the present thesis aims to further develop a novel burner for particle combustion based on the existing configuration. The project is embedded in a collaborative research framework involving both national and international partners. Successful outcomes may also provide opportunities to present the results at workshops and conferences.

Tasks

• Review the literature, especially single particle combustion, including experiments and simulations
• Design a novel particle burner together with a seeding unit for high-pressure conditions
• Construction, manufacture and testing the functionality of the burner and seeding unit.
• Analyze testing data and results
• Intermediate and final presentations, write final theses

Core data