Molecular formula :
nature : the fluid-particle flow system, have the following basic characteristics of the bed : (1) lower the bed porosity, in the order of 50-70%; ( 2) in relation to the vessel wall, solid particles on the entire bed, it is fixed. All of the general flow rate is between the minimum flow velocity and terminal velocity; Bed always be able to maintain and can have a noticeable on the interface, the bed, as dense or dense phase. Transmission system for gas-solid, solid particles and gases in the mass ratio of more than 100 mobile phase, also known as the dense phase.
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