一种生物质高适应性、高效正压气化耦合燃煤锅炉的装置及其方法

本发明提供一种生物质高适应性、高效正压气化耦合燃煤锅炉的装置及其方法，包括：流化床气化炉提升管，流化床气化炉提升管下端设有气化炉风室，流化床气化炉提升管一侧设有炉前料仓，气化炉风室一侧设有气化炉鼓风机，流化床气化炉提升管一侧设有旋风分离器，旋风分离器下端设有返料器，返料器的排料口连接于流化床气化炉提升管下端，所述旋风分离器上端通过管道连接于旋风除尘器，所述旋风除尘器上端通过管道连接于换热器，换热器通过循环管道连接于燃煤锅炉。本发明采用抽取锅炉低温段的烟气对生物质燃气进行降温，相比导热油降温更加的安全、稳定。此外，当改变生物质原料时，通过适度的调节二次风量和返料器立管蒸汽，依旧能实现高效气化和稳定运行。 The invention provides a device and a method for a biomass high-adaptability efficient positive-pressure gasification coupling coal fired boiler. The device comprises a fluidized bed gasifier liftingtube, wherein a gasifier air chamber is formed in the lower end of the fluidized bed gasifier lifting tube; a gasifier-front cabin is arranged on one side of the fluidized bed gasifier lifting tube; agasifier blower is arranged on one side of the gasifier air chamber; a cyclone separator is arranged on one side of the fluidized bed gasifier lifting tube; a return feeder is arranged at the lower end of the cyclone separator; the discharge hole of the return feeder is connected with the lower end of the fluidized bed