ISSN Online: 2688-7231
ISBN Online: 978-1-56700-524-0
Proceedings of the 26thNational and 4th International ISHMT-ASTFE Heat and Mass Transfer Conference December 17-20, 2021, IIT Madras, Chennai-600036, Tamil Nadu, India
Effect of temperature on bubbling fluidized bed hydrodynamics with swirling air distributor
摘要
The gas distributor is an important part of fluidized bed
reactor, which directly affects the uniform distribution of gas
and fluidization quality. Therefore, the performance of
fluidization is strongly dependent on the design of air
distributor. For this purpose, this study has been done to focus on the temperature of the air without and with swirl
components. A bubbling fluidized bed reactor with an internal
diameter and height of 0.06 m and 1 m, respectively is used.
Air flows through a distributor plate and also through a
vertical helical pipe to impart swirl component. First, the
fluidizing air is uniformly distributed at the ambient
temperature and the minimum fluidization velocity (Umf) is determined by using pressure measurements. Further, to examine the temperature effect on the pressure drop and performance of the swirl air, the air has been preheated to
various initial temperatures. Eventually, the temperature
effects on fluidization and pressure fluctuations are
established for air flow without and with swirl component.
Moreover, the distributor to bed pressure drop ratio is
analysed to examine the presence of non-uniform solid-gas
mixing inside the reactor.