Bed temperature adjustment is key to fludized bed boiler's capacity and fuel adaptability. In recent years

as an effective measure of bed temperature adjustment

flue gas recirculation has been increasingly used in special fuel fired fludized bed boilers

including biomass

municipal solid waste

industrial solid waste and sludge

etc. The article analyses various affecting the operation of flue gas recirculation system for fludized bed boilers in China

and proposes corresponding improvement methods and optimization measures by comparison with flue gas recirculation system in foreign countries

and summarizes the design points of the flue gas recirculation system for fludized bed boilers.