Details of Grant 

EPSRC Reference:	GR/L62115/01
Title:	PARTICLE RESIDENCE TIME DISTRIBUTIONS IN CIRCULATING FLUIDIZED BEDS
Principal Investigator:	Thorpe, Professor RB
Other Investigators:	Davidson, Professor J
Researcher Co-Investigators:
Project Partners:	AKZO Nobel Pre Nexus Migration Tioxide Group Services
Department:	Chemical Engineering and Biotechnology
Organisation:	University of Cambridge
Scheme:	Standard Research (Pre-FEC)
Starts:	30 March 1998	Ends:	29 March 2001	Value (£):	119,506
EPSRC Research Topic Classifications:	Particle Technology
EPSRC Industrial Sector Classifications:	No relevance to Underpinning Sectors
Related Grants:
Panel History:
Summary on Grant Application Form
An existing circulating fluidized bed (CFB) would be modified to study the residence time distribution of particles (RTD). Theory would be developed, based on the core-annulus model, to predict particle RTD. Important objectvies of the theory would be (i) to explain published data which show two peaks on the RTD-time curve (ii) to predict axial diffusivity, for comparison with publushed data, (iii) to predict the behaviour of large units; present work that the core-annulus model explains results from a unit of 5m x 5m cross-section. Experiments are planned for a CFB with (i) round section, (ii) square section, (iii) diffuser section, i.e. gradual enlargement (iv) a variety of solids reflux ratios by using different exit bends at the top of the riser.
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Organisation Website:	http://www.cam.ac.uk