Patent ID: 6723291
Filing Date: 2004-04-20
Classification: B01J,C08F

Abstract:
A fluidized bed reactor, which comprises:a. a distributor plate under the fluidized section of the reactor; b. a mixing chamber formed by confining the reactor space under the distributor plate with said distributor plate; and c. a flow deflector installed under the distributor plate and at the entry of the reactor bottom, characterized in that the flow deflector comprises an annular plate and a conic plate, the annular plate being positioned above the reactor bottom entry with a hole diameter of D1 by spacers, the said annular plate having a central hole with a diameter of D2; and the conic plate being located above the annular plate, concentric with the annular plate and supported on the annular plate by spacers, the conic plate being a reversed cone with a cone angle of a to the horizontal plane and having a central hole with a hole diameter of D3; the minimum section area between the annular plate and the reactor bottom being S1, the minimum section area between the annular plate and the conic plate being S2, and the circular area of the central hole of the conic plate being S3; the flow deflector being adapted to provide at least three paths for the gas stream to enter the mixing chamber, a first upwardly fluid flow path through the entry D1 of the reactor bottom and section S1 and along the wall of the mixing chamber, a second upwardly fluid flow path through the central hole D2 of the annular plate and section S2 below the conic plate and towards the side wall, and a third upwardly fluid flow path through the central hole D3 of the conic plate.