Open shroud trickle valve

Details Open shroud trickle valve Open shroud trickle valve

C - Chemistry, Metallurgy

10

G

222/110.4

C10G 11/00 (2006.01) B01J 8/00 (2006.01) C10G 11/18 (2006.01) F16K 1/20 (2006.01)

Patent

CA 1047985

ABSTRACT OF THE DISCLOSURE An open shrouded trickle valve for use in processes such as those adapted for fluid cat crackers and particularly for use in a cyclone dipleg to eliminate the shroud normally employed. The valve is connected at the exit of the dipleg to provide a seal so that the collected solids can be returned directly to the bed and comprises a flapper plate which is disposed tp prevent backflow of gas up the exit opening when solids flow is interrupted or when a bubble of gas passing through the bed is directed up the dipleg thereby pre- venting direct loss of solids out ot the cyclones. Situated a fixed distance behind the flapper plate is a flat baffle plate disposed in a vertical position and wider than the flapper plate, which serves to protect the flapper plate by preventing local disturbances such as passing bubbles from affecting its position with respect to the exit opening.

279007

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