Volatile matter in fuel, particularly in solid fuels like coal or biomass, plays a crucial role in the combustion process within boilers. Understanding the effect of volatile matter can help optimize the boiler operation for better efficiency and emissions. Here are the impacts of volatile matter on boiler combustion:
Ignition and Combustion Stability: High volatile matter content aids in the easy ignition of the fuel. As volatile components release and ignite rapidly when the fuel is heated, t...
If the coal feeding air flow rate to the coal feeder of a fluidized bed boiler is too high or too low, it can have several effects on the operation of the boiler:
1. Too high coal feeding air flow rate: if the air flow rate to the coal feeder is too high, it can cause the coal to be blown out of the feeder and into the furnace too quickly, which can result in incomplete combustion and high emissions of unburned hydrocarbons and carbon monoxide. This can also cause fluctuations in the be...
Thermic fluid heater boilers are widely used in a variety of industries because of their excellent performance and energy efficiency. They offer several benefits over traditional steam boilers, including better temperature control, easy operation, and low maintenance costs. Here are some frequently asked questions about thermic fluid heater boilers:
1, What is a thermic fluid heater boiler?
A thermic fluid heater boiler is a device that uses thermal oil or heat transfer oil to transfer heat fr...
Different combustion modes are the core difference between fluidized bed boiler and common boiler.
Fluidized bed boiler adopts fluidized combustion mode. After the fuel is crushed to a proper particle size by a crusher, it is fed from the upper part of the air distribution plate of the combustion chamber by a coal feeder, mixed with the hot boiling materials in the combustion chamber, heated rapidly, and the fuel quickly catches fire and burns. Under the action of high air velocity, a large num...
For same energy output when energy input is lesser efficiency increase. When maximum heat energy is generated from coal or losses in heat transfer are reduced efficiency increase. Coal in boulder size is burnt combustion may not be complete. There will be more unburnt coal. As per coal chemistry and as per boiler flue gas velocity as designed best coal size for full combustion is designed. Maximum crushed coal is also not the best. Then there will be more coal dust. According to general design in various technologies pulverized coal give best combustion for fbc boilers. For cfbc boilers generally crushed coal size is 6 mm.
When you achieve best combustion mean this is main contributor for increase in efficiency. Boiler design, heat transfer, flue gas velocity, heat losses, are other factors for efficiency.
Coal-fired boilers refer to boilers that use various kinds of coals as fuel and convert the heat value of coals to steam or hot water.
Some specific parameters should be provided to calculate the theoretical coal consumption of a set of 20 tph coal-fired boiler. If the rated steam pressure is 1 MPa, the heat value of coal is 7000 kcal / kg, the boiler inlet water temperature is 20 ° C, and the boiler thermal efficiency is 80%, the daily coal consumption is 50-56 tons.
