Improved particle treatment in a toroidal bed reactor

Abstract From the Canadian patent

In a process for processing particulate material with a stream of fluid in an annular processing zone which includes the steps of supplying the particulate material for processing in the zone discharging processed material from the zone and generating in the zone a circumferentially directed flow of fluid to develop a circulating turbulent band of particles an improvement to the processing zone which provides a predictable particle flow path both circumferentially and helically of the zone. The improvement comprises directing the flow of fluid to develop a circulating bed with inner bed depth and outer bed depth a flow of fluid directed at an angle relative to the processing zone base and …