Single-burner-port-corresponding multi-pipe-combined intermediate storage bunker type exhaust air powder-supplying system

The invention discloses an intermediate storage bunker type exhaust air powder-supplying system and belongs to the technical field of coal-fired boilers. A single burner powder supplying pipe is transformed, and the single powder supplying pipeline corresponding to a single burner port is changed into a plurality of parallel powder supplying pipelines. By changing the opening number of the parallel pipelines, the total section area of the single burner powder supplying pipe is changed indirectly. The problem that an intermediate storage bunker type exhaust air powder-supplying system cannot ensure the reasonable powder supplying air flow speed and the optimum coal powder concentration under the load is solved; and meanwhile the oxygen quantity carried into a hearth for burning by the powder supplying air flow under the load is reduced, the oxygen concentration of the main burning area is reduced, and generation of NOX is reduced. 本发明公开了种中间储仓式乏气送粉系统，属于燃煤锅炉技术领域。本发明对单只燃烧器的送粉管道进行了改造，将对应单个燃烧器的单根送粉管道改为多根并列送粉管道。通过改变