How does a CFBC boiler work? 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
How does a CFBC boiler work?
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 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.
Where are FBC boilers used?
Bubbling FBC is used for Fuels with lower heating values such as Rice Husk. Under such sort, the main factors leading to fluidization are as follows: Solid Fuel Particle Size. Air Fuel Mixture.
What are the major performance features of the CFBC boiler circulating fluidizing bed combustion 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 most important part of a boiler?
The safety valve is the most important safety device in a boiler or domestic hot-water system. It is designed to relieve internal pressure if a range of failures occur within the system.
What is Whrb?
Energy > Waste Heat Recovery Boilers (WHRB) Heat Recovery Steam Generator (HRSG) These facilities make use of the waste heat of the exhaust gases at the outlet of Furnaces, Gas Turbines and Alternative Engines to produce steam or superheated steam, thermal oil or gas.
What are the two parts of a boiler?
Key Components of Boilers are:-
- Burner – The burner is the component of boiler that provides the heat that heats the water of system.
- Heat exchanger – The heat exchanger of boiler allows the heat from the burner to heat the water in system.
What are the types of boilers?
Boilers can be broadly classified as shell tube and water tube boilers.
- Shell and tube boilers. Shell and tube boilers are also referred to as fire tube or smoke tube boilers.
- Different types of fire tube boilers:
- Lancashire boiler:
- Locomotive boiler.
- Reversal Chamber:
- Wet Back Boilers:
- Dry Back Boilers:
- Two pass boilers:
What is boiler efficiency?
Definition of Boiler Efficiency is “The percentage of the total absorption heating value of outlet. steam in the total supply heating value.” In other word, it is a rate how the boiler runs efficiently.
What is the function of boiler?
Boiler design is the process of designing boilers used for various purposes. The main function of a boiler is to heat water to generate steam. Steam produced in a boiler can be used for a variety of purposes including space heating, sterilisation, drying, humidification and power generation.
What is the main function of boiler?
What is SP boiler?
Suspension Preheater boiler (SP boiler) Boiler which recovers waste heat from a suspension preheater, which pre-heats raw materials fed into a rotary kiln, to generate steam. Air Quenching Cooler boiler (AQC boiler) Boiler which recovers waste heat from an air quenching cooler to generate steam.
What is the working principle of CFBC boiler?
2017-06-06 15:56:48 CFBC boilerstands for circulating fluidized bed combustion boiler. Circulating Fluidized Bed combustion has given boiler and power plant operators a greater flexibility in burning a wide range of coal and other fuels. All this without compromising efficiency and with reduced pollution.
What kind of boiler is circulating fluidized bed boiler?
CFBC is Circulating Fluidized Bed Boiler. Boiler in which coal is burnt in an environment of high concentration of bed material (mineral matter) derived from combustion of coal retained by using cyclone / other means.
How does circulating fluidized bed combustion technology ( CFBC ) work?
Generally, CFBC consists of a boiler and a high-temperature cyclone. The intra-furnace gas velocity is as high as 4 to 8 m/s. A coarse fluidizing medium and char in the flue gas are collected by the high-temperature cyclone and recycled to the boiler. Recycling maintains the bed height and increases the denitration efficiency.
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.