Daniel Pierce Ryan

US Patent:

6695965, Feb 24, 2004

Filed:

Apr 4, 2000

Appl. No.:

09/542895

Inventors:

Robert J. Wittenbrink - Kingwood TX
Daniel Francis Ryan - Baton Rouge LA

Assignee:

ExxonMobil Research and Engineering Company - Annandale NJ

International Classification:

C10G 7338

US Classification:

208 27, 208 24, 208 20, 208 21, 585 1, 585 9, 585733, 585734, 585700, 585728

Abstract:

A wax blending process is disclosed which retains the desirable properties of a Fischer-Tropsch wax, while adjusting the hardness of the wax to within to a desired range. The invention utilizes a synergistic effect between hard virgin Fischer-Tropsch wax and softer mildly isomerized Fischer-Tropsch wax in a blending process which allows the artisan to adjust the hardness of a wax product to within desired ranges. The process involves passing a Fischer-Tropsch wax over a hydroisomerization catalyst under predetermined conditions including relatively mild temperatures such that chemical conversions (e. g. , hydrogenation and mild isomerization) take place while less than 10% boiling point conversion (hydrocracking) occurs, thus preserving overall isomerized wax yield. At least a portion of the resulting isomerized wax is then blended with untreated hard virgin.

US Patent:

6776898, Aug 17, 2004

Filed:

Apr 4, 2000

Appl. No.:

09/542894

Inventors:

Robert J. Wittenbrink - Kingwood TX
Daniel Francis Ryan - Baton Rouge LA

Assignee:

ExxonMobil Research and Engineering Company - Annandale NJ

International Classification:

C10G 4500

US Classification:

208 89, 208 58, 208 59, 208 97, 208 88, 208 72, 208 74, 518726

Abstract:

A novel process for forming hydrocarbon waxes from synthesis gas is disclosed. This invention teaches a process whereby a Fischer-Tropsch wax can be formulated such that the wax softness as defined by ASTM Standard Test Method for Needle Penetration of waxes (ASTM D-1321) can be adjusted to within a region most preferred for end use applications while simultaneously removing undesirable impurities, such as oxygenates (e. g. , primary alcohols), olefins, and trace levels of aromatics. In a Fischer-Tropsch reactor, Fischer-Tropsch wax is formed from synthesis gas in a catalyzed reaction. The Fischer Tropsch wax is then subjected to a relatively mild hydroprocessing over a hydroisomerization catalyst under conditions such that essentially no boiling point conversion is obtained, but yet chemical conversions (e. g. , hydrogenation and mild isomerization) occur yielding a high purity, hydrocarbon wax product of reduced hardness.

US Patent:

6846848, Jan 25, 2005

Filed:

Aug 23, 2002

Appl. No.:

10/226752

Inventors:

Robert Jay Wittenbrink - Kingwood TX, US
Loren Leon Ansell - Baton Rouge LA, US
Daniel Francis Ryan - Baton Rouge LA, US
Louis Francis Burns - Baton Rouge LA, US

Assignee:

ExxonMobil Research and Engineering Company - Annandale NJ

International Classification:

C07C 2700

US Classification:

518700, 818709, 818715

Abstract:

A hydrocarbon wax product from a hydrocarbon synthesis slurry comprising liquid synthesis product and catalyst particles is purified by introducing a portion of hydrocarbon synthesis slurry from a hydrocarbon synthesis zone to a treatment zone in which a treatment gas contacts the hydrocarbon synthesis slurry. Hydrogen or a hydrogen-containing gas is useful as the treatment gas. The gas treatment removes impurities from the hydrocarbon wax portion of the hydrocarbon synthesis slurry. Purified wax product is separated and removed in situ via wax withdrawal means. This avoids or minimizes the need for further treating the wax product.

US Patent:

42183243, Aug 19, 1980

Filed:

May 3, 1979

Appl. No.:

6/035670

Inventors:

Wilhelm U. Hartmann - Sepulveda CA
Larry C. Augustine - Saugus CA
Daniel J. Ryan - Tuckerton NJ

Assignee:

Textron, Inc. - Providence RI

International Classification:

B01D 2706
B01D 2906

US Classification:

210493R

Abstract:

A metallic filter element constructed of stainless steel. The filter element includes a tubular metal support member having a tubular filter media member slipped over the support member. When the filter element becomes clogged and is ready for cleaning or becomes damaged and is ready for replacement, the filter media member may be easily removed by merely slipping it off the tubular metal support member and replacing it with a new or cleaned filter media member.

US Patent:

56615949, Aug 26, 1997

Filed:

May 30, 1995

Appl. No.:

8/454463

Inventors:

Charles M. Rhoads - Plano TX
Gary Frazier - Garland TX
Richard G. Hoffman - Plano TX
Oren B. Kesler - Plano TX
Daniel J. Ryan - Sycamore IL

Assignee:

Texas Instruments Incorporated - Dallas TX

International Classification:

G02F 129

US Classification:

359299

Abstract:

Generally and in one form of the invention this is a periodic surface filter comprising at least one element at a surface of the filter and electronic controls to change the optical characteristics of the element. Other methods and devices are disclosed.

US Patent:

56193653, Apr 8, 1997

Filed:

May 30, 1995

Appl. No.:

8/453531

Inventors:

Charles M. Rhoads - Plano TX
Gary Frazier - Garland TX
Richard G. Hoffman - Plano TX
Oren B. Kesler - Plano TX
Daniel J. Ryan - Sycamore IL

Assignee:

Texas Instruments Incorporated - Dallas TX

International Classification:

G02F 103

US Classification:

359248

Abstract:

Generally and in one form of the invention this is a periodic surface filter comprising at least one element at a surface of the filter and electronic controls to change the optical characteristics of the element. The surface filter comprising and electronically tunable electro-optic material to alter the resonant frequency of the element.

US Patent:

42920485, Sep 29, 1981

Filed:

Dec 21, 1979

Appl. No.:

6/106123

Inventors:

Robert D. Wesselhoft - Baytown TX
Daniel F. Ryan - Friendswood TX

Assignee:

Exxon Research & Engineering Co. - Florham Park NJ

International Classification:

C10J 354

US Classification:

48197R

Abstract:

Hydrocarbon liquids and a methane-containing gas are produced from carbonaceous feed solids by contacting the solids with a mixture of gases containing carbon monoxide and hydrogen in a devolatilization zone at a relatively low temperature in the presence of a carbon-alkali metal catalyst. The devolatilization zone effluent is treated to condense out hydrocarbon liquids and at least a portion of the remaining methane-rich gas is steam reformed to produce the carbon monoxide and hydrogen with which the carbonaceous feed solids are contacted in the devolatilization zone. The char produced in the devolatilization zone is reacted with steam in a gasification zone under gasification conditions in the presence of a carbon-alkali metal catalyst and the resultant raw product gas is treated to recover a methane-containing gas.

US Patent:

43326668, Jun 1, 1982

Filed:

May 6, 1980

Appl. No.:

6/147428

Inventors:

Richard F. Bauman - Houston TX
Daniel F. Ryan - Friendswood TX

Assignee:

Exxon Research & Engineering Co. - Florham Park NJ

International Classification:

C10G 100

US Classification:

208 8LE

Abstract:

An improved process for the liquefaction of coal and similar solid carbonaceous materials wherein a hydrogen donor solvent or diluent derived from the solid carbonaceous material is used to form a slurry of the solid carbonaceous material and wherein the naphthenic components from the solvent or diluent fraction are separated and used as jet fuel components. The extraction increases the relative concentration of hydroaromatic (hydrogen donor) components and as a result reduces the gas yield during liquefaction and decreases hydrogen consumption during said liquefaction. The hydrogenation severity can be controlled to increase the yield of naphthenic components and hence the yield of jet fuel and in a preferred embodiment jet fuel yield is maximized while at the same time maintaining solvent balance.

Address:

8835 Troulon Dr, Houston, TX 77036

VIN:

2MEFM74V97X631949

Make:

MERCURY

Model:

GRAND MARQUIS

Year:

2007