Steven Niewiedzial

US Patent:

6809054, Oct 26, 2004

Filed:

Nov 21, 2000

Appl. No.:

09/717741

Inventors:

Daniel N. Myers - Arlington Heights IL
Mikhail Tretyak - Arlington Heights IL
Rusty M. Pittman - Chicago IL
Steven Niewiedzial - Hoffman Estates IL

Assignee:

UOP LLC - Des Plaines IL

International Classification:

B01J 2034

US Classification:

502 41, 502 34, 502 39

Abstract:

An distributor arrangement introduces spent FCC catalyst more uniformly across the dense bed of the regenerator to provide more even contact with regeneration gas in order to avoid hot spots and zones of incomplete combustion. The invention forms a fluidized hopper to collect spent catalyst and a horizontally extended header with multiple horizontally extended outlet arms to place catalyst into the regenerator. The invention may use an aeration means to fluidize the header to further assist catalyst flow. Furthermore, the spent catalyst delivered to the top of the regenerator dense reduces NO emissions in the flue gas.

US Patent:

6841133, Jan 11, 2005

Filed:

Aug 9, 2001

Appl. No.:

09/925261

Inventors:

Steven Niewiedzial - Hoffman Estates IL, US
Daniel N. Myers - Arlington Heights IL, US

Assignee:

UOP LLC - Des Plaines IL

International Classification:

F27B 1508
B01D 4512

US Classification:

422147, 422144, 95271, 55349

Abstract:

An apparatus and process is disclosed for the separation of solids from gases in a mixture which is most particularly applicable to an FCC apparatus. The mixture of solids and gases are passed through a conduit and exit through a swirl arm that imparts a swirl motion having a first annular direction to centripetally separate the heavier solids from the lighter gases. The mixture then enters a cyclone which has a curved outer wall and imparts a second swirling angular direction to the mixture. The second angular direction is counter to the first angular direction. The apparatus and method assures that a greater proportion of the mixture entering the cyclone is incorporated into the vortex to further enhance separation between the solids and gases.

US Patent:

7150860, Dec 19, 2006

Filed:

Apr 18, 2001

Appl. No.:

09/837687

Inventors:

Paolo Palmas - Des Plaines IL, US
Steven Niewiedzial - Hoffman Estates IL, US

Assignee:

UOP LLC - Des Plaines IL

International Classification:

B01J 8/18
C10G 11/00
C10G 11/18

US Classification:

422147, 422139, 422144, 422145, 208106, 208113, 208161, 95271, 55339

Abstract:

An apparatus and process in which a catalyst nozzle and a feed nozzle are joined together at a joint in a reactor vessel that contains a disengaging transport conduit in communication with a separator. An inlet to the transport conduit is disposed vertically higher than the joint to reduce the quantity of catalyst that enters the transport conduit with the vapor product.

US Patent:

7368090, May 6, 2008

Filed:

Aug 25, 2004

Appl. No.:

10/925481

Inventors:

Daniel N. Myers - Arlington Heights IL, US
Mikhail Tretyak - Arlington Heights IL, US
Rusty M. Pittman - Chicago IL, US
Steven Niewiedzial - Hoffman Estates IL, US

Assignee:

UOP LLC - Des Plaines IL

International Classification:

B01J 8/18
B01J 23/90
B32B 5/02
C10G 11/00
C10G 11/02

US Classification:

422140, 422139, 422144, 422145, 422147, 422223, 2081202, 208121, 208113

Abstract:

An distributor arrangement introduces spent FCC catalyst more uniformly across the dense bed of the regenerator to provide more even contact with regeneration gas in order to avoid hot spots and zones of incomplete combustion. The invention forms a fluidized hopper to collect spent catalyst and a horizontally extended header with multiple horizontally extended outlet arms to place catalyst into the regenerator. The invention may use an aeration means to fluidize the header to further assist catalyst flow. Furthermore, the spent catalyst delivered to the top of the regenerator dense reduces NOemissions in the flue gas.

US Patent:

58433775, Dec 1, 1998

Filed:

Aug 26, 1996

Appl. No.:

8/703236

Inventors:

James A. Fandel - Schaumburg IL
David A. Lomas - Barrington IL
Steven Niewiedzial - Hoffman Estates IL
Daniel R. Johnson - Schaumburg IL
James Althoff - Arlington Heights IL

Assignee:

UOP LLC - Des Plaines IL

International Classification:

F27B 1508

US Classification:

422144

Abstract:

An FCC separation arrangement for a catalyst and hydrocarbon contacting zone having a downcomer terminus section uses a compact separation vessel to provide a quick separation between catalyst and hydrocarbon gases in a compact area that also accommodates the use of cyclone separators for a further removal of catalyst from the hydrocarbon gases. The separation system uses a gas collection conduit that incorporates an expansion element for accommodating differential growth between the riser separation vessel and cyclones in the same compact area. The system is suitable for single downcomers or multiple downcomers. The system can be used with a closed containment vessel or in an entirely open system that eliminates the use of a containment vessel.

US Patent:

55650201, Oct 15, 1996

Filed:

Nov 25, 1994

Appl. No.:

8/345056

Inventors:

Steven Niewiedzial - Hoffman Estates IL

Assignee:

UOP - Des Plaines IL

International Classification:

B01D 4500

US Classification:

95271

Abstract:

In this invention a cyclonic separation method and apparatus discharges particulate solids and gaseous fluids into a separation vessel from a discharge opening of a central conduit and withdraws separated gaseous fluids from the separation vessel with a recovery conduit having an inlet located below the discharge opening. Recovery of separated gases using cyclonic separation is improved by the specific location of the recovery piping inlet which reduces the entrainment of fine particles with the gases.