1. First of all, what is a biomass boiler?
Biomass boiler is a kind of boiler, that is, boilers that use biomass energy as fuel are called biomass boilers, which are divided into biomass steam boilers, biomass hot water boilers, biomass hot blast stoves, biomass heat conduction oil furnace, vertical biomass boilers, horizontal biomass boilers and so on.
Classification of biomass boilers: horizontal biomass boilers and vertical biomass boilers. Biomass gas heat conduction oil furnace, biomass steam boiler, biomass hot water boiler, biomass heat conduction oil furnace.
2. Secondly, what kind of coal-fired boiler?
Coal-fired boiler refers to a boiler burning coal as fuel. The heat of coal is converted into steam or hot water, but not all the heat is effectively converted and a part of reactive power is consumed, so there is an efficiency problem. Generally, larger boilers have higher efficiency, ranging from 60% to 80%.
Finally, the difference between them is that
Boiler structure, coal-fired boilers are divided into chain grate coal-fired boilers and fluidized bed coal-fired boilers, and biomass particle boilers are divided into biomass chain grate boilers and biomass circulating fluidized bed boilers.
Different from fuels, biomass fuel boilers can burn both coal and biomass energy, while coal-fired boilers can only burn coal.
Since its birth, the bio-particle combustion boiler has been considered as an environmentally friendly and energy-saving boiler that can be vigorously promoted, while coal-fired boilers with a capacity of 10 tons or less are banned in the governance environment.
Analysis on the difference between biomass fuel and coal;
Comparison of carbon content. Biomass boiler fuel particles contain less carbon, and the highest carbon content is only about 50%, which is lower than that of coal-fired boilers.
Comparison of hydrogen content. Biomass boiler fuel particles contain a little more hydrogen and are obviously more volatile. Most of the carbon in biomass combines with hydrogen to form low molecular hydrocarbons, which are thermally decomposed at a certain temperature to separate out volatiles, so biomass fuel is easy to ignite.
Comparison of oxygen content. Biomass boiler fuel particles contain a lot of oxygen, which is obviously higher than that of coal, which makes the calorific value of biomass fuel lower.
Density contrast. Biomass fuel has low density, obviously lower than coal, loose texture and easy to burn out, and the residual carbon in ash carbon is less than coal ash.
Comparison of sulfur-containing companies. The sulfur content of biomass fuel is low, mostly less than 0. 12%, so it is not necessary to install desulfurization device in the boiler.
The CO2 released by biomass is very low, which can be considered as zero CO2 emission compared with coal-fired boilers.
Ash from biomass combustion can be used as fertilizer, and waste can be recycled, which is difficult for fossil fuel coal.
Biomass can be mixed with coal to improve combustion efficiency.
Biomass combustion can realize the reduction, harmlessness and resource utilization of biomass waste.