Jet drive fluidized bed pelletizing device with multiple jet drive units

The present invention discloses one spouted fluidized bed pelletizer with several spouting units. The pelletizer consists of mainly casing, spouted fluidized bed pelletizer with several spouting units comprising vertical partition boards inside the casing. Each spouting unit consists of gas distributing board, self-cleaning pressure jet or self-cleaning double-fluid jet, and guide tube over the jet. The guide tube separates the spouting unit into spouting area and annular area in the area ratio of 0.2-0.5. The ventilating hole in the annular area is inclined hole and that in the spouting areais vertical hole. The present invention has simple structure, less back mixing of the particles and high product homogeneity. The self-cleaning jet without choking and the inclined holes in favor of exhaust of large particles can ensure the continuous production.