Multiphase contact and distribution apparatus for hydroprocessing

• US 8,597,595 B2
• Filed: 11/27/2012
• Issued: 12/03/2013
• Est. Priority Date: 07/19/2010
• Status: Active Grant

• Current Assignee: Chevron USA Incorporated (Chevron Corp.)
• Original Assignee: Chevron USA Incorporated (Chevron Corp.)
• Inventors: Akin, Zackory S., Boyak, Craig R., Kemoun, Abdenour, Killen, Ralph Evan, Parimi, Krishniah, Song, Steven Xuqi, Souers, Steven Alden
• Primary Examiner(s): Gordon, Brian R
• Application Number:
  US13/686,304
• Publication Number:
  US 20130082125A1
• Time in Patent Office: 371 Days
• Field of Search: 422 52-521, 422/524, 422545-546, 422/606, 422/607, 422/919, 422/922, 422/924, 738/633.2, 738/64, 738/640.1, 738/641.5, 738/647.46, 239548-549, 239/568
• US Class Current: 422/508
• CPC Class Codes: B01J 2208/00884 Means for supporting the bed of particles, e.g. grids, bars, perforated plates
• CPC Class Codes: B01J 2208/00902 Nozzle-type feeding elements
• CPC Class Codes: B01J 2208/0092 Perforated plates
• CPC Class Codes: B01J 2208/00929 Provided with baffles
• CPC Class Codes: B01J 8/0453 the beds being superimposed one above the other
• CPC Class Codes: B01J 8/0492 Feeding reactive fluids for solid material, see B01J8/0015
• CPC Class Codes: B05B 1/14 with multiple outlet openings B05B1/02, B05B1/26 take precedence; with strainers in or outside the outlet opening

Abstract

Systems and apparatus for mixing, cooling, and distributing multiphase fluid mixtures within a reactor, wherein reactor internal apparatus of the present invention provides not only improved fluid mixing and distribution to each underlying catalyst bed surface, but also offers other advantages including: decreased mixing tray height; easier maintenance, assembly and disassembly; and decreased amounts of fabrication material. In an embodiment, fluid may be evenly distributed to a catalyst bed from a fluid distribution unit comprising a nozzle tray including a plurality of nozzles, wherein the nozzles include at least one liquid inlet disposed tangentially to an inner surface of the nozzle.

Claims

1. A fluid distribution nozzle, comprising:

(a) a substantially cylindrical nozzle body having a plurality of outer slots disposed circumferentially around the nozzle body;

(b) a cap affixed to a proximal portion of the nozzle body, the cap having an axial proximal opening therein;

(c) a base affixed to a distal portion of the nozzle body, the base having an axial distal opening therein; and

(d) a substantially cylindrical inner conduit disposed axially within the proximal portion of the nozzle body, the inner conduit disposed within the proximal opening of the cap, and the inner conduit extending proximally from the cap to define a proximal end of the inner conduit, the inner conduit having a plurality of inner slots disposed circumferentially around the proximal end of the inner conduit, and a distal end of the inner conduit terminating distally at a location proximal to a distal end of each of the outer slots.

2. The fluid distribution nozzle of claim 1, wherein:

(a) the axial distal opening is frusto-conical and tapers distally from narrow to broad,

(b) each of the cap and the base is threaded,

(c) the cap is sealingly engaged with the nozzle body via threads on the proximal portion of the nozzle body, and

(d) the base is sealingly engaged with the nozzle body via threads on the distal portion of the nozzle body.

3. The fluid distribution nozzle of claim 1, wherein:

(a) the inner conduit is disposed substantially concentrically with the nozzle body,

(b) the inner conduit is sealingly engaged with the cap,

(c) the nozzle body, and the inner conduit jointly define a void within the device,

(d) each of the inner slots is in fluid communication with the void via the inner conduit,

(e) the void comprises an annular proximal void and a substantially cylindrical distal void,

(f) the inner conduit is configured for the passage of gas therethrough from the inner slots to the distal void, and

(g) the device is configured for the passage of liquid through the outer slots into the nozzle body.