Notes

How fluidized bed boilers work
What is a fluidized bed furnace?

Fluidized bed boiler, often known as fluidized bed boiler, is an industrial boiler that will uses a fluidized bed combustion holding chamber to burn gasoline. The fluidized mattress combustion chamber makes very good combining conditions over the entire portion of?? the particular combustion chamber, thus the fuel can burn out while the combustion chamber temperature is not really too high, reducing exhausts of harmful smells.

Fluidized bed furnaces are divided in to 3 types:

? AFFC Boiler:

Atmospheric pressure fluidized bed central heating boiler, is considered the most common type of fluidized bed boiler.
It is usually identified as foam fluidized bed boiler (BFB Boiler).
? CFBC Central heating boiler

Circulating fluidized bed boiler, this is the high-boiling condition of the fluidized bed boiler
Smoke cigarettes velocity in typically the combustion chamber will be up to 4-6 m/s
The sturdy particles in typically the block will become retained by the Cyclone separating and going around back to the combustion chamber.
CFB furnaces are typically designed for capacity varies of 100 tons/hour or even more.
? PFEC Central heating boiler:

An exclusive variant of the fluidized bed furnace where the entire is placed inside a high-pressure area (about 16kg/cm2).
The warm gas generated following getting through the heat up exchangers can be used to be able to run the gas turbine.
Steam produced from heat exchangers is used in order to run steam generators.
PFBC boilers normally have higher system efficiency compared to additional two types
The look capacity range of PFBC is seventy? 350 MW.
Normal fluidized bed furnace structure includes five subsystems:

Feeding program
Combustion chamber
Wind and air program
Slag removal method and exhaust gasoline treatment
Steam electrical generator


Working principle associated with fluidized bed furnace:

Fuel is provided to the combustion chamber through a new feed system located in the wall structure at the top of the burning chamber.
The amount of power fed to the heater is regulated by the movements speed with the gasoline feeding system straight into the furnace.
In the combustion chamber from the fluidized bed boiler, the process of oscillating the combination of solid power particles is private into layers in line with the density of typically the fuel particles and even the height associated with the combustion holding chamber.
This oscillating method is made potential because the acceleration of the quality 1 air movement from the bottom part floor of typically the combustion chamber will be large enough.
The effect of this high blowing wind velocity is to be able to produce a mixture associated with solid fuel debris down the stream of the aliment air mixture aside from the burning chamber.
During the particular combustion process, typically the fuel particles slowly decrease in size in addition to are mixed with one part of the particular available cement throughout the combustion slot provided to create a new fuel buffer.
Typically the process of losing fuel in typically the combustion chamber is definitely classified into levels in line with the height of the combustion slot provided and based on the breeze speed of stage 1 and level 2.
The warmth through the burning fuel layer is transferred to the water by way of the water wall surfaces arranged round the combustion chamber, the combustable chamber nails.
Warm smoke carries travel ash particles leaving behind the combustion holding chamber, passing through the particular superheaters and lastly the convection temperature exchanger and then exiting the furnace.
Level 2 atmosphere is generated within the combustion chamber by means of air nozzles situated above the combustion chamber to offer air for typically the upper boiling layers to reduce NOx, adjust the excess air coefficient plus adjust the combustion temperature in typically the combustion chamber..
Following performing the convection heat exchange procedure at the end end of typically the iron, it is not fed into the energy recovery product, reusing the heating in the exhaust smoke cigarettes to heat the particular feed water in addition to the incoming weather.
Lo hoi tang soi is located within front of typically the exhaust fan, separating the flying burning ash particles from your fumes stream, before being discharged out of the fireplace by the wear out fan.
Advantages of fluidized bed central heating boiler:

As a foam fluidized bed that can be designed in order to burn any fuel
Coal can become burned with the ash content of 62 -70% or together with a volatile matter ratio of lower than 1%.
Moving parts are much fewer in fluidized sleep boilers than throughout boilers while using outdated principle
As being a fluidized bed that could meet stringent emission requirements
The fuel applied is diverse: coal bran, loose rice husk, rice husk pellets, firewood pellets, chopped firewood, document industries, biomass...
Read More: https://ks-boiler.com/lo-hoi-tang-soi