Patent ID: 6723292
Filing Date: 2004-04-20
Classification: B01D,B01J

Abstract:
A stripper for removing the flue gas carried by regenerated catalyst, the stripper comprising:(1) a vertical cylinder; (2) a degassing pipe located at the longitudinal axis of the vertical cylinder; (3) a horizontal pipe connected with the lower end of the degassing pipe; (4) a plurality of sets of inner annular baffles fixed on the degassing pipe, wherein said inner annular baffles includes an upper conic plate and a lower skirt, the degassing pipe having an opening part below each set of the inner annular baffles; (5) a plurality of sets of outer annular baffles fixed on the inner wall of the cylinder, wherein said outer annular baffles includes an upper conic plate and a lower skirt, the outer annular baffles having some small holes, the inner annular baffles and the outer annular baffles being arranged along the vertical direction in an alternating spaced arrangement; (6) annular steam conduits with some small holes located in the spaces below each set of the outer annular baffles; (7) steam introducing conduits connected with the annular steam conduits; (8) a gas outlet at the top of the cylinder; (9) a catalyst inlet at the upper part of the cylinder; and (10) an outlet for stripped catalyst at the bottom of the cylinder wherein said outlet is connected with a catalyst conveying pipe through a transition section.