What is circulating fluidized bed reactor?

A circulating fluidized bed (CFB) boiler features higher gas velocity (superficial flow velocity) in the furnace (combustor) compared with a bubbling fluidized bed (BFB) boiler. The boiler activates a mixture of particles and gas to improve combustion reaction.

What is the most important factor to be considered for designing a fluidized bed reactor?

In designing a fluidized bed system, particle size plays a major role because it is one of the major factors in fluidization characteristics apart from gas velocity.

How does a fluidized bed reactor work?

In this type of reactor, a fluid (gas or liquid) is passed through a solid granular material (usually a catalyst) at high enough speeds to suspend the solid and cause it to behave as though it were a fluid. This process, known as fluidization, imparts many important advantages to an FBR.

What are the characteristics of fluidized bed reactors?

The distinguishing feature of a fluidized bed reactor is that the bed of solid particles or catalyst is supported by an up flow of gas. This reactor provides easy loading and removal of catalyst. This is advantageous when the solids bed must be removed and replaced frequently.

How does the circulating fluidized bed reactor work?

In a CFB, elutriation carries each sand and char particles outside of the bed. Once to provide extra energy for the sand. The warm sand is then recirculated back to the reactor. during this kind of reactor, the sand is that the heat carrier, and it provides a large fraction of the warmth needed to keep up the reactor temperature. fluidized beds.

How is sand carried in a Cfb reactor?

In a CFB, elutriation carries each sand and char particles outside of the bed. Once to provide extra energy for the sand. The warm sand is then recirculated back to the reactor. during this kind of reactor, the sand is that the heat carrier, and it provides a large fraction of the warmth needed to keep up the reactor temperature.

What kind of fuels can be produced in a circulating fluidized bed?

Circulating fluidized bed combustion The circulating fltfidized bed has been especially successful for combustion of a wide range of solid fuels including coal, biomass, peat, petroleum coke, oil shale, and refuse-derived fuels. Advantages of circulating fluidized bed combustion