What is CFBC boiler?

What is CFBC boiler?

CFBC boiler is circulating fluidized bed boiler and the CFBC boiler is becoming more and more popular in the world. Boiler in which coal or biomass is burnt in an environment of high concentration of bed material (mineral matter) derived from combustion of coal retained by using cyclone / other means.

What is CFB type boiler?

Boilers. 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 fluidization in boiler?

Fluidized-bed boilers are the most common type of boiler recommended for biomass fuel, which is burned within a hot bed of inert particles, typically sand. The fuel-particle mix is suspended by an upward flow of combustion air within the bed.

What are the major performance features of the CFBC boiler?

The major performance features of the CFBC boiler (circulating fluidizing bed combustion boiler) are: a) It has a high processing capacity because of the high gas velocity through the system.

What is the difference between CFBC and Afbc 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.

Why it is called as Afbc boiler?

AFBC ( Atmospheric Fluidized Bed Combustion ) BOILER COLD START UP PROCEDURE:- AFBC boiler is a very developing technology now these days this technology is widely used in the industrial boiler for the purpose of efficient and clean burning of coal and other fuel for steam generation.

What is FBC system?

Fluidized bed combustion (FBC) is a combustion technology used to burn solid fuels. In its most basic form, fuel particles are suspended in a hot, bubbling fluidity bed of ash and other particulate materials (sand, limestone etc.) Since this allows coal plants to burn at cooler temperatures, less NOx is also emitted.

What’s the difference between a CFBC and an AfBC boiler?

Summary: AFBC Boiler means Atmospheric Fluidized Bed Combustion Boiler,CFBC Boiler means Circulating Fluidized Bed Combustion Boiler. AFBC Boiler means Atmospheric Fluidized Bed Combustion Boiler,CFBC Boiler means Circulating Fluidized Bed Combustion Boiler.

How is gas captured in a CFBC boiler?

The particles are then collected back by a particle separate and recycled to the furnace through the loop seal cyclone . Loop seal is the heart of the CFBC boiler. this is an arrangement which feed solids capture by cyclone to the furnace but prevents direct flow of gas from high furnace to the low- pressure cyclone .

Why is circulating fluidized bed ( CFB ) boiler important?

Circulating Fluidized Bed (CFB) boiler has played an important role in high efficient utilizing of coal resource due to its excellent fuel flexibility and environmental friendly performance. It developed as the beneficial supplement of pulverized coal boiler rapidly.

What kind of fuel is used for CFBC?

However, pulverized coal (PC) boiler technology remains the primary power generation technology for premium fuels and CFBC technology is used mainly to fire fuels not suited for PC applications.