What is the fluidized bed dryer?

What is the fluidized bed dryer?

Fluidized bed dryer (also called fluid bed dryer) is a kind of equipment used extensively in the pharmaceutical industries to reduce the moisture content of pharmaceutical powder and granules. The equipment works on a principle of fluidization of the feed materials.

What is FBD used for?

Fluidized bed dryer (FBD) is well known and widely used equipment in granulation area of pharmaceutical manufacturing. It is used in the granulation process for drying the material to get desired moisture content in the tablet formulation granules required for perfect compression of tablets.

What are the different types of fluidization?

Based on different Geldart particle groups and gas velocities, several different fluidization regimes can be observed: fixed bed, homogeneous fluidization, bubbling fluidization, slugging fluidization, turbulent fluidization, and entrainment process.

What are the types of fluidized bed boiler?

6.3 Types of Fluidised Bed Combustion Boilers 1. Atmospheric classic Fluidised Bed Combustion System (AFBC) 2. Atmospheric circulating (fast) Fluidised Bed Combustion system(CFBC) 3. Pressurised Fluidised Bed Combustion System (PFBC).

What is fluidization and its types?

Fluidization is defined as a method to keep solid particles floating in an upward direction (Figure 5) in a flow of gas or liquid. In freezing, fluidization occurs when particles of a similar shape and size are subjected to an upward stream of low-temperature air.

What is the two phase theory of fluidization?

The two-phase theory of fluidization, which suggested that the bubble flow rate being equal to the excess gas flow above the incipient fluidization, has been proved to be an overestimation in most cases.

How many types of boilers are there?

There are three main types of boilers you can install into your home: combi boilers, heat only (regular boilers) and system boilers.

What is difference between Afbc and CFBC boiler?

AFBC means atmospheric fluidized bed combustion, where the furnace pressure is atmospheric pressure. CFBC boiler stands for circulating fluidized bed combustion boiler, the furnace is pressurised and the furnace gas is recirculated to capture the unburnt carbon, to increase the thermal efficiency of the boiler.

What is liquid fluidization?

Fluidization is a process in which a gas or liquid is blown upward and evenly through a bed of solid particles with sufficient force to cause the particles to rise up and move around inside their container. The particles become well mixed with one another and with the liquid or gas.

What is the difference between FBP and FBD?

FBD is used for only drying and, FBP is used for Granulation, Drying, Agglomeration, and Coating Process.

What is SFM in FBD?

Solid flow monitor test (SFM test) or broken bag detector(BBD) provides reliable detection of filled bag failure/ruptured in FBD, thus prevent product loss. SFM or BBD is located in the exhaust duct of FBD.

What is the fluidization process?

Fluidization (or fluidisation) is a process similar to liquefaction whereby a granular material is converted from a static solid-like state to a dynamic fluid-like state. This process occurs when a fluid (liquid or gas) is passed up through the granular material.

What are the different types of fluidized bed combustion systems?

There are two basic categories of fluidized-bed combustion, i.e., atmospheric fluidized bed combustion (AFBC) and pressurized fluidized bed combustion (PFBC). Each category is further comprised of bubbling fluidized bed combustion (BFBC) and circulating fluidized bed combustion (CFBC).