Abstract
Power consumption in a horizontal gas-solid mixed-type polymerization reactor with two parallel axes and a spacious upper part was investigated. Instantaneous torque was measured under operating conditions for various vessel dimensions, rotational speeds, clearance between blade tip and vessel bottom, and properties of solid particles.
The results show that the torque is periodically varied by a rotating blade and it increases when a blade enters a particle bed. Averaged torque is independent of both the internal and wall friction. Dimensionless averaged power consumption is well correlated with the Froude number and dimensionless height of the particle bed. The ratio of maximum torque to averaged torque is between about 2 and 5 and is also correlated with the Froude number and the dimensionless height of the particle bed.
