What is a fluidized bed process?

Fluidized beds are used as a technical process which has the ability to promote high levels of contact between gases and solids. Extremely high surface area contact between fluid and solid per unit bed volume. High relative velocities between the fluid and the dispersed solid phase.

Which substance is used in fluidized bed?

Explanation: The pellets used in fluidised bed are finely graded solids, such as a tube bundle immersed in a bed of sand or coal particles. These are tiny dust like particles to ensure maximum surface area for effective reaction; hence these particles are called Particulate Solid material.

What is a fluidized bed filter?

A fluidized bed filter, sometimes called a “suspended particulate filter” or a “suspended sand filter,” is a tube or box that hangs off the back of your fish tank, or a cylinder or canister which stands in your sump or on the floor beside or under your fish tank, and is connected to a water pump in the fish tank (or …

Is quicksand a fluidized bed?

Quicksand is caused when a bed of sand particles have a source of pressurized water rise from underneath until the water is saturated with sand and agitated, making it unable to support weight. This air causes the material to fluidize and behave like a liquid, much like in a bed of quicksand.

What is a sand bed?

a thick layer of sand, whether deposited naturally or artificially; specifically, a thick layer of sand into which molten metal is run in casting, or from a reducing furnace. …

Is fluidized bed a CSTR?

Fluidized Bed Reactor: Analogous to a CSTR with catalyst particles being blown around inside the reactor, see Figure 10-16 (p. 620).

Where are fluidized beds used?

Fluidized beds have been used in technological processes such as: cracking and reforming of hydrocarbons (oil), carbonization and gasification of coal, ore roasting, Fischer-Tropsch synthesis, polyethylene manufacturing, limestone calcining, aluminum anhydride production, granulation, vinil-chloride production.