Richard Howe Sanborn

US Patent:

6626424, Sep 30, 2003

Filed:

Apr 16, 2002

Appl. No.:

10/123716

Inventors:

Daniel Yuk-Kwan Ngan - Houston TX
Louis Edward Stein - Houston TX
Richard Addison Sanborn - Houston TX

Assignee:

Shell Oil Company - Houston TX

International Classification:

C10G 916

US Classification:

2611121, 261118, 261DIG 54, 208 48 Q

Abstract:

A quench nozzle design introduces quench oil tangentially into the quench tube which cools the hot gaseous pyrolysis products coming out of the hot radiant tubes in a pyrolysis furnace (in ethylene manufacture). Besides cooling the hot gases, the quench oil introduced into the quench tube by this nozzle design keeps the wall of the quench tube wetted, which is necessary to prevent coke deposition on the quench tube. The nozzle has one quench oil entry, which eliminates the need for any restriction orifice required to evenly distribute quench oil flows that would otherwise be required with several nozzle entries. Also, the one-nozzle oil introduction has a larger diameter than that required where more than one nozzle is employed in this service. The replacement of multiple nozzles with a single larger diameter nozzle eliminates plugging problems caused by coke solids or, coke solid precursors, present in the quench oil.

US Patent:

6863121, Mar 8, 2005

Filed:

Apr 16, 2002

Appl. No.:

10/123767

Inventors:

Raghunath Gopal Menon - Katy TX, US
Richard Addison Sanborn - Houston TX, US

Assignee:

Shell Oil Company - Houston TX

International Classification:

F28F009/02

US Classification:

165158, 165174

Abstract:

The invention focuses on distributing the vapor/liquid flow that emerges from an inlet nozzle across the tube sheet of an alkylation reactor or heat exchanger. The flow distributor takes the two-phase flow that emerges from the inlet nozzle, turns it towards the tubesheet and delivers a uniform mixture across the tube sheet. The flow distributor is located in the channel head of the reactor or heat exchanger. In order to dislodge the liquid film from the wall of the inlet nozzle, trip rings and angular trip tabs are located internally in the flow distributor.

US Patent:

7160518, Jan 9, 2007

Filed:

Apr 11, 2002

Appl. No.:

10/475381

Inventors:

Ye-Mon Chen - Sugar Land TX, US
Thomas Shawn Dewitz - Bellaire TX, US
Hendricus Arien Dirkse - Amsterdam, NL
Hubertus Wilhelmus Albertus Dries - Amsterdam, NL
Richard Addison Sanborn - Houston TX, US

Assignee:

Shell Oil Company - Houston TX

International Classification:

B32B 5/02
F27B 15/08

US Classification:

422147, 422144

Abstract:

A cyclone separator provided with an inlet for receiving gas and solid particles, + a gas outlet at its upper end and a lower tubular part, wherein the lower tubular part is provided with a closed lower end, through which closed lower end a substantially vertical particle withdrawal conduit extends from a position below the closed lower end to a position in the tubular part and below the inlet for receiving gas and solid particles, said conduit being provided with openings to withdraw solid particles from the cyclone separator and wherein said conduit has a smaller cross-sectional area than the lower tubular part, thereby defining a space between conduit and inner wall of the lower tubular part, wherein in the lower part of said space main means to add a primaxy fluidizing medium are present.

US Patent:

7250140, Jul 31, 2007

Filed:

Apr 11, 2002

Appl. No.:

10/475400

Inventors:

Ye-Mon Chen - Sugar Land TX, US
Thomas Shawn Dewitz - Bellaire TX, US
Hendricus Arien Dirkse - Amsterdam, NL
Hubertus Wilhelmus Albertus Dries - Amsterdam, NL
Richard Addison Sanborn - Houston TX, US

Assignee:

Shell Oil Company - Houston TX

International Classification:

B32B 5/02

US Classification:

422144, 422142, 422143, 422145, 422147

Abstract:

A fluid catalytic reactor vessel having at its upper end a single centrally positioned primary cyclone having a gas-solids inlet fluidly connected to the downstream end of a fluid catalytic riser, which riser is positioned externally from a fluid catalytic reactor vessel. The primary cyclone is further provided with a gas outlet conduit at its upper end fluidly connected to one or more secondary cyclone separators, which secondary cyclone separators are positioned in the space between the centrally positioned primary cyclone and the wall of the reactor vessel and which secondary cyclones have means to discharge solids to the lower end of the reactor vessel and means to discharge a gaseous stream poor in solids to a gas outlet of the reactor vessel. The primary cyclone is further provided with a primary stripping zone at its lower end and means to discharge pre-stripped solids from the primary cyclone to the lower end of the reactor vessel. The reactor vessel further comprises at the lower end of reactor vessel a secondary stripping zone is and means to discharge stripped solids from the reactor vessel.

US Patent:

7648544, Jan 19, 2010

Filed:

Jul 17, 2003

Appl. No.:

10/521509

Inventors:

Thomas Shawn Dewitz - Bellaire TX, US
Hubertus Wilhelmus Albertus Dries - Amsterdam, NL
Andreas Ekker - Amsterdam, NL
Jan Kater - Amsterdam, NL
Richard Addison Sanborn - Houston TX, US
Alex Christian Hoffmann - Bergen, NO
Weiming Peng - Bergen, NO

Assignee:

Shell Oil Company - Houston TX

International Classification:

B01D 45/12

US Classification:

55448, 55396, 55456

Abstract:

Swirl tube separator for separating solids from a gas-solid containing feed comprising a tubular housing, an inlet for introducing a gas-solids mixture at one end of said housing, a solids outlet opening at the opposite end of said housing, and a co-axial positioned tubular gas outlet conduit placed at an end of said housing, wherein along the axis of the tubular housing a vortex extender pin is present.

US Patent:

6376732, Apr 23, 2002

Filed:

Mar 8, 2000

Appl. No.:

09/520493

Inventors:

Daniel Yuk-Kwan Ngan - Houston TX
Richard Addison Sanborn - Houston TX
Louis Edward Stein - Houston TX
Vance Jordan Grieshop - Destrehan LA

Assignee:

Shell Oil Company - Houston TX

International Classification:

C07C 700

US Classification:

585800, 208308, 55457, 55447, 55464, 96181, 96204, 96205, 96206, 96208, 96215, 96216, 95269

Abstract:

A centrifugal vapor/liquid separator separates the vapor and liquid in a flash of hydrocarbon and steam mixture, such that only the vapor stream is fed and processed further downstream. The design of the separator ensures that all partially wetted surfaces in the separator, except at the vapor outlet pipe, are well-wetted and washed by the non-vaporized liquid portion of the feed or by injection of external liquid thus ensuring that no coke deposition occurs inside the separator. The flash temperature in the separator therefore can be increased beyond the typical limit thus achieving a deeper cut into the feed and recovering a larger fraction of the feed as vapor for further downstream processing.