Laura L Leonard

US Patent:

7790020, Sep 7, 2010

Filed:

Oct 15, 2007

Appl. No.:

11/872102

Inventors:

Peter Kokayeff - Des Plaines IL, US
Laura Elise Leonard - Des Plaines IL, US
Michael Roy Smith - Des Plaines IL, US

Assignee:

UOP LLC - Des Plaines IL

International Classification:

C10G 45/44
C10G 65/02

US Classification:

208212, 208 49, 208 89, 208143

Abstract:

A process is provided for producing low sulfur diesel having a high cetane number where the temperature and pressure requirements for obtaining low levels of sulfur is separated from the temperature and pressure requirements for improving cetane. In one aspect, a low pressure hydrodesulfurization zone and a high pressure aromatic saturation zone are employed to sequentially achieve the desired sulfur and cetane levels. In another aspect, the process first converts a diesel boiling range hydrocarbonaceous stream in a hydrotreating zone at conditions effective to produce a hydrotreating zone effluent having a reduced concentration of sulfur with minimal saturation of aromatics. Hydrogen is then admixed with the hydrotreating zone effluent, which is then reacted in a substantially liquid-phase continuous reaction zone substantially undiluted with other streams to effect saturation of aromatics to provide a liquid-phase continuous reaction zone effluent having an improved cetane number.

US Patent:

7794585, Sep 14, 2010

Filed:

Oct 15, 2007

Appl. No.:

11/872084

Inventors:

Laura Elise Leonard - Des Plaines IL, US
Peter Kokayeff - Des Plaines IL, US
Michael Roy Smith - Des Plaines IL, US

Assignee:

UOP LLC - Des Plaines IL

International Classification:

C10G 65/02

US Classification:

208 89, 208 49, 208 57, 208 59, 208212

Abstract:

Methods of hydroprocessing hydrocarbon streams are provided that employ substantially liquid-phase hydroprocessing conditions. In one aspect, the method includes directing a hydrocarbonaceous feed stock to a first substantially liquid-phase hydroprocessing zone wherein an effluent from the first substantially liquid-phase hydroprocessing zone is directed to a second substantially liquid-phase hydroprocessing zone generally undiluted with other hydrocarbon streams. In another aspect, the method recycles a liquid portion of a liquid hydrocarbonaceous effluent from the second substantially liquid-phase hydroprocessing zone, which preferably includes an amount of hydrogen dissolved therein, to the hydrocarbonaceous feed stock so that the feed to the first substantially liquid-phase hydroprocessing zone has a relatively larger concentration of dissolved hydrogen relative to the hydrocarbonaceous feed stock.

US Patent:

7794588, Sep 14, 2010

Filed:

Oct 15, 2007

Appl. No.:

11/872140

Inventors:

Peter Kokayeff - Des Plaines IL, US
Laura Elise Leonard - Des Plaines IL, US
Michael Roy Smith - Des Plaines IL, US

Assignee:

UOP LLC - Des Plaines IL

International Classification:

C10G 45/44
C10G 65/02

US Classification:

208212, 208 49, 208 89, 208143

Abstract:

A process is provided for producing low sulfur diesel having a reduced poly-aromatic level where at least a portion of the poly-aromatics are converted to mono-aromatics. In one aspect, the process separates the temperature and pressure requirements for obtaining low levels of sulfur from the temperature and pressure requirements to saturate poly-aromatics to mono-aromatics. By one approach, the process first converts a diesel boiling range hydrocarbon stream in a hydrotreating zone at conditions effective to produce a hydrotreating zone effluent having a reduced concentration of sulfur with minimal saturation of poly-aromatics. Hydrogen is then admixed in the hydrotreating zone effluent or at least a portion thereof, which is then reacted in a substantially liquid-phase continuous reaction zone to effect saturation of poly-aromatics to provide a liquid-phase continuous reaction zone effluent having a reduced level of poly-aromatics relative to the diesel feed.

US Patent:

7799208, Sep 21, 2010

Filed:

Oct 15, 2007

Appl. No.:

11/872251

Inventors:

Peter Kokayeff - Des Plaines IL, US
Bart Dziabala - Des Plaines IL, US
Laura Elise Leonard - Des Plaines IL, US

Assignee:

UOP LLC - Des Plaines IL

International Classification:

C10G 65/02

US Classification:

208 59, 208 49, 208 89, 208212

Abstract:

Methods of hydrocracking hydrocarbon streams are provided that employ substantially liquid-phase continuous hydroprocessing conditions. In one aspect, the method includes a separate hydrotreating and hydrocracking system where the hydrocracking zone is a substantially liquid-phase continuous system. In another aspect, the method includes a two-stage hydrocracking system where one or both of the hydrocracking zones is a substantially liquid-phase continuous reaction system.

US Patent:

7803269, Sep 28, 2010

Filed:

Oct 15, 2007

Appl. No.:

11/872312

Inventors:

Peter Kokayeff - Des Plaines IL, US
Laura Elise Leonard - Des Plaines IL, US

Assignee:

UOP LLC - Des Plaines IL

International Classification:

C10G 45/58
C10G 35/04
C07C 5/13

US Classification:

208134, 208133, 208141, 585734

Abstract:

A process is provided for improving the cold flow properties of a hydrocarbon stream employing a substantially liquid-phase continuous hydroisomerization zone where the reaction zone has a substantially constant level of dissolved hydrogen throughout without the addition of additional hydrogen external to the reaction zone.

US Patent:

7815792, Oct 19, 2010

Filed:

Oct 26, 2009

Appl. No.:

12/605730

Inventors:

Lorenz J. Bauer - Schaumburg IL, US
Suheil F. Abdo - Lincolnshire IL, US
Laura E. Leonard - Western Springs IL, US
Peter Kokayeff - Naperville IL, US

Assignee:

UOP LLC - Des Plaines IL

International Classification:

C10G 25/00
C10G 29/00
C10G 45/00
C10G 51/00
C10G 55/00
C10G 57/00
B01J 23/00
B01J 29/00
B01J 21/00
B01J 20/00

US Classification:

208243, 208 67, 208213, 208217, 208244, 502 66, 502 74, 502255, 502260, 502263, 502313, 502314, 502321, 502322, 502323, 502327, 502332, 502350, 502351, 502415, 502439

Abstract:

A process and catalyst for the selective hydrodesulfurization of a naphtha containing olefins. The process produces a naphtha stream having a reduced concentration of sulfur while maintaining the maximum concentration of olefins.

US Patent:

7842180, Nov 30, 2010

Filed:

Dec 14, 2005

Appl. No.:

11/300007

Inventors:

Laura E. Leonard - Oak Park IL, US
Peter Kokayeff - Naperville IL, US

Assignee:

UOP LLC - Des Plaines IL

International Classification:

C10G 47/00
C10G 49/00
C10G 49/22
C10G 45/02

US Classification:

208107, 208 49, 208100, 208209, 208254 H

Abstract:

A hydrocracking process wherein a liquid phase stream comprising a hydrocarbonaceous feedstock and a liquid phase effluent from a hydrocracking zone and a sufficiently low hydrogen concentration to maintain a liquid phase continuous system into a hydrotreating zone. A portion of the effluent from the hydrotreating zone comprising unconverted hydrocarbons is introduced into the hydrocracking zone with a sufficiently low hydrogen concentration to maintain a liquid phase continuous system.

US Patent:

8071820, Dec 6, 2011

Filed:

Dec 23, 2008

Appl. No.:

12/342728

Inventors:

Maureen L. Bricker - Buffalo Grove IL, US
Laura E. Leonard - Oak Park IL, US

Assignee:

UOP LLC - Des Plaines IL

International Classification:

C07C 31/20
B01J 19/00

US Classification:

568852, 568868, 422236

Abstract:

A method and apparatus for converting glycerol into propylene glycol by directing a basic glycerol containing feed and a hydrogen containing gas into a reaction zone including a fixed bed of catalyst that is operating at glycerol conversion conditions where the reactor includes and at least one quench zone and directing a quench material into the quench zone.