Feeding device of high-density fuel of multistage fluidized bed reactor

The utility model provides a feeding device of high-density fuel of a multistage fluidized bed reactor. The conveying and feeding of solid raw materials are important links of pretreatment of raw material, entering into a reactor and the like and extremely important parts of the technological process, but a feeding port is prone to being blocked if the feeding speed is not controlled well, and waste is caused due to the fact that fuel which is burned insufficiently can not be recycled. The feeding device comprises the reactor (1) and a conveyor (2), the reactor is provided with a three-level reaction chamber (3), a screen partition plate (4) is arranged at the bottom end of the reaction chamber, feeding ports (5) are formed in one side of the reaction chamber, and discharge ports (6) are formed in the other side of the reaction chamber; a feeder (7) is installed on the conveyor, a spiral lift mechanism of the feeder is installed out of the reactor, a gate valve (8) is arranged at each feeding port end, and a material falling hopper (9) is arranged at each discharge port end. The feeding device of the high-density fuel of the multistage fluidized bed reactor is used for feeding the high-density fuel to the multistage fluidized bed reactor.