Wall-to-Bed Heat Transfer in Bubbling Fluidized Bed Reactors with an Immersed Heat Exchanger and Continuous Particle Exchange

Measurements were carried out to investigate the wall-to-bed heat transfer in a cross-flow bubbling fluidized bed under continuous solids exchange. The experiments performed with different tube bundle exchangers immersed lab-scale gas–solid cold flow model 0.4 m × 0.2 cross section. Geldart group B particles used, and gas velocity, circulation rate, exchanger geometry varied. Tracer that previously this setup showed mixing characteristics of mostly resembled mixed but superimposed by dispersed plug caused particles. Because knowledge, it was assumed influence imposed may have positive effect on intensifying particle convection due lateral movement solids. Due limited studies focus coefficient, well-established technique comprising an electrically heated measurement probe used determine effect. present results show more is transported from when velocity increased less tubes are arranged densely bed. These findings good agreement reported literature. However, exception one test series, no significant increase which expected intensify cross-flow, observed. Based novelty study focuses beds, represent missing link part series conducted studies. Furthermore, they can be helpful for understanding behavior accompanying reactors.