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What Are the Special Designs of Biomass Fired CFB Boiler

2015-09-17 15:29:14

The circulating fluidized bed boiler designed to burn biomass fuel such as straw, wood pellet, rice and shaped biomass fuel is called Biomass Fired CFB Boiler, and it can be used in power plant or heating supply. Here are some biomass fired CFB boiler special designs to help you know of the product.

biomass fired CFB boiler special design

Furnace and secondary air: There are some obvious differences between biomass boiler and coal boiler taking account of low-density, low heat valve, high volatile content and high moisture of the biomass fuel. So the biomass boiler must have the larger combustion space and enough height to make sure the fuel have the sufficient time to burn in the furnace, meanwhile the adequate and stratified secondary air is deployed to fit in with the concentrated combustion of volatile content, so that guarantees the fuel and air are fully mixed to burn out in the furnace.

Superheater: Because part of the Cl in biomass fuel must be transformed into HCl and Cl2, avoiding superheater deposit or ash is an effective measure to reduce the extent of corrosion in superheater, which is caused by the interaction of alkali metal salt, Cl2 and HCl. This series of boilers use platen superheater as its high-temperature superheater to essentially avoid deposit or ash in superheater, eliminate one of the reasons that might cause the corrosion to the high-temperature superheater.

The layout of the heating surface in the tail part and soot blower: Because the strong agglutinating valve of the deposit or ash is remained after the combustion of the biomass fuel. For one thing, during the course of design, the heating surface should be reasonably laid out to maintain flue gas temperature of the inlet of high-temperature superheater within a lower level. For another, the tubes of high-temperature superheater adopt heating-resisting material, and soot blower should be reasonably laid out to prevent high-temperature superheater from deposit or ash.

If you need CFB steam boiler, CFB hot water boiler or CFB power plant boiler, welcome to visit our websit or email to zbg@zzboiler.com to get the product price and data!

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