Patent ID: 7967975
Filing Date: 2011-06-28
Classification: B01J,B04C,C10G

Abstract:
1. A method for separating out solids from a particulate suspension, comprising: providing a cyclone separator system, including a primary cyclone and a secondary cyclone disposed in series in a separator vessel, and a single cyclone separator leg which joins a lower end of a leg of the secondary cyclone and a leg of the primary cyclone to form a single primary and secondary cyclone leg complex where solids collected by both cyclones are combined, wherein the leg of the primary cyclone extends substantially straight and vertically aligned with a center axis of the primary cyclone to a junction thereof with the leg of the secondary cyclone, the leg of said secondary cyclone is inclined with respect to a center axis of said secondary cyclone to extend from said secondary cyclone to said junction, and said single cyclone separator leg extends substantially straight and vertically aligned with the center axis of the primary cyclone, from the junction and along at least a portion of a length thereof, wherein said single cyclone separator leg is immersed into a fluidized bed of particles within said separator vessel and terminates distally in a single leg termination disposed in said fluidized bed, wherein a pressure in the separator vessel is in excess of those inside the primary and secondary cyclones, whereby said secondary and primary cyclones are negative pressure cyclones, each having an internal pressure always less than that of the gaseous phase or the fluid phase of the fluidized bed in the separator vessel, wherein said collected and combined solids are discharged from said single cyclone separator leg through said single leg termination, and wherein the level of dense phase solids within the secondary and primary cyclone legs is located above the junction of the lower ends of the secondary and primary cyclone legs.