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Biomass Power Plant with CFB Boiler

2019-02-18 14:43:09

Plant-derived biomass is now considered as one of the most prospective energy sources in the future for reducing carbon dioxide emissions and conserving fossil fuel resources. The effective utilization of biomass includes such biomass wastes as waste paper, waste building material wastes and agricultural wastes. CFB (Circulating Fluidized Bed) boilers provide the best solution for biomass power generation because they can accommodate a wide range of fuels and their environmental impact is small. It is expected that CFB Biomass power plants will be widely used in the future.

Features of circulating fluidized bed combustion:

The circulating fluidized bed combustion system enables the fuel particles to be fluidized the combustion air. This combustion system is characterized by quick fluidization and installation of the duct at the outlet of the flue gas to collect particles. This combustion system has the following advantages compared to other combustion systems.

(1) Wide applicability of fuels
The combustion time is comparatively long for the incineration in the entire area and also for the recirculation. This feature improves the combustion efficiency and makes this system applicable to a wide range of fuels as well as mixture combustion. In addition, particles circulating in the furnace retain sufficient heat to dry even fuel with high moisture content. Thus such fuel can be utilized without preliminary drying.

(2) Limited impact for environment
Feeding limestone to the furnace provides desulfurization. Also multi-stage air injection, along with the lower combustion temperatures of 850℃ to 950℃, makes low level of NOx emission.

(3) Low-excess-air combustion
As high-speed fluidizing flow is applied, the relative velocity of particle speed and air molecule speed will be great, and is promoting gas-solid reactions. This enables the excess air ratio to be set at a low level.

Biomass power plant with CFB boilers produced by ZBG have many characteristics:
Capacity: 20 - 280 tons
Application: central heating, cogeneration and power generation.
Thermal efficiency: ≥90%
Combustion method: direct combustion (fuel cost is lower than molding biomass)
Applicable fuel: all kinds of biomass

If you want to learn more information about biomass fired CFB power plant boiler, please consult our online customer service.

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