Chemical reactions in chemical looping combustion of waste derived fuels and biofuels

Carbon capture and storage (CCS) combined with bioenergy (BECCS) is a key technology to deliver the negative CO₂ emissions required to limit global warming to well below 2°C. One of the most promising technologies for CCS is chemical looping combustion of biomass (bio-CLC), which is able to capture CO₂ without a costly and energy-demanding CO₂ separation step. The aim of the project is to analyze the phenomena in the CLC process and especially, evaluate how fluid dynamic phenomena in the reactors affect the net conversion rates and what role ash chemistry plays in CLC. The work includes analysis of phenomena on particle scale, modeling of pilot scale reactors and development of models for computational fluid dynamic simulation of industrial scale CLC. The phenomenological findings will be expressed in form of mathematical models that can be used to enhance development of CLC technology to commercial scale.