Patent ID: 6290775
Filing Date: 2001-09-18
Classification: B01J,Y10S

Abstract:
A fluidized bed reactor for the continuous production of granules, comprising a fluidized bed chamber having a floor that is a fluidizing base plate, at least one device for introducing and removing a fluidizing gas, at least one device for introducing granule starting products in liquid form or dissolved and/or suspended in a liquid, and at least one discharge device for discharging the granules into a second chamber, wherein the discharge device comprises a shaft wall, a chamber wall and two side walls, the shaft wall having a lower edge at a height h.sub.1 above the fluidizing base plate, the lower edge of the shaft wall and the fluidizing base plate defining an inlet opening for granules, the chamber wall having an upper edge at a height h.sub.2 above the fluidizing base plate, h.sub.2 being greater than h.sub.1, the discharge device further comprising upper and lower guard roofs, the upper guard roof being connected to the shaft wall above the upper edge of the chamber wall and projecting into the second chamber, the lower guard roof being connected to the upper edge of the chamber wall and projecting into the second chamber, the upper and lower guard roofs defining an outlet opening for granules, wherein the shaft wall, the chamber wall, the two side walls and the upper and lower guard roofs form a closed shaft except for the inlet and outlet openings, the shaft having a closed top for conveying granules from the fluidized bed chamber into the second chamber.