B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
B01J 19/24 (2006.01)
Patent
CA 2462230
Internal components for a vertical downflow reactor are disclosed, including quench nozzle configurations for symmetrical introduction of a quench fluid into a quench zone. In one embodiment, the quench nozzle includes a closed-ended conduit having longitudinal exit ports or slots proximate its closed end. In another embodiment, the conduit terminates in a "tee", the lateral leg of the "tee" being sealed off and the quench fluid exiting from the downwardly extending leg. The invention also is directed to an interzone mixing apparatus in vertical communication with the bottom of the quench zone. An inwardly sloping collector tray has an opening concentric with the vertical axis of the reactor vessel for receiving liquid from the quench zone. A mixing device is provided on the upper surface of collector tray in axial alignment with and covering the opening in the collector tray for mixing and contacting liquid and vapor components entering from above the collector tray and conveying the mixed vapor and liquid downwardly through the opening in the collector tray. Flow deflectors are positioned immediately below the collector tray opening for directing liquid flow towards the axial centerline of the reactor. A horizontally disposed collection pan is connected to the collector tray below and axially aligned with the collector tray opening for collecting liquid flowing through the collector tray opening. The collection pan is provided with a radially outwardly flared downwardly extending skirt to disperse the liquid flow from the collector pan toward the reactor walls, onto a perforated tray them onto a distributor tray through which the vapor and liquid may be delivered to the horizontal cross-section of a reactor vessel second catalyst zone in a conventional manner. A vertical spiral weir may be provided on the surface of the tray panel to add residence time to the liquid on the tray and to utilize the collector tray surface for initiating mixing of the liquid.
Smart & Biggar
Texaco Development Corporation
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