Fluidized bed granulator

The utility model provides a fluidized bed granulator. The fluidized bed granulator comprises a material barrel, a fluidizing barrel and a dust removal barrel, wherein the material barrel is used for accommodating materials; the fluidizing barrel is arranged above the material barrel and is used for fluidizing the materials; filter cloth is arranged in the dust removal barrel, adsorption dust removal devices are arranged on the two sides of the dust removal barrel respectively, each adsorption dust removal device comprises a spray pipe assembly and at least one connecting pipe arranged between the spray pipe assembly and the dust removal barrel, and the connecting pipes are aligned to the filter cloth. The spray pipe assembly is connected with the dust removal barrel through the connecting pipe, the spray pipe assembly comprises a spray pipe, the side face of the spray pipe is connected with the connecting pipe, one end of the spray pipe is used for being connected with a high-speed hot air flow supply device