Fluidized bed reactor and method for synthesizing methyl chlorosilane by using same

The invention relates to the field of environmental protection and chemical industry, in particular to a fluidized bed reactor. In the invention, a gas guiding device is additionally arranged between a distribution plate at the bottom of the fluidized bed reactor and a cylinder. The guiding device comprises a gas distribution pipe, a guiding pipe and a gas distribution flange. The gas distribution pipe comprises at least two sections of elbow pipes, the lower end of each elbow pipe is connected with the guiding pipe, the middle part at the outer end of each section of elbow pipe is connected with a gas inlet, and the other end of the guiding pipe is connected with the gas distribution flange. After the guiding device is additionally arranged, part of material gas can be shunted and tangentially enters a fluidized bed. Tangential gas inlet enables gas in the fluidized bed to be added with tangential speed on the basis of the prior upward axial speed, and gas and carried raw material particles spirally ascends