Current research is concerned with the residence time distribution of particles.
It is planned to study concentration profiles arising from the injection of tracer particles into different parts of the riser tube residence time distributions arising from pulse injection of tracer particles. They can subsequently be detected optically, giving particle residence times. Experimental work and theoretical modelling are involved. The results will be relevant to use of the CFB as a gas-solid reactor as well as a combustor. Particulate material is fed into a slightly sloping cylinder rotating slowly about its nearly horizontal axis.