Dennis E Hardy

US Patent:

7420004, Sep 2, 2008

Filed:

Apr 12, 2005

Appl. No.:

11/108149

Inventors:

Dennis R. Hardy - Alexandria VA, US
Timothy Coffey - McLean VA, US

Assignee:

The United States of America as represented by the Secretary of the Navy - Washington DC

International Classification:

C07C 27/00
B01J 8/00

US Classification:

518704, 481273, 481277, 48128, 422189, 422190, 518700, 518706

Abstract:

A process for producing synthetic hydrocarbons that reacts carbon dioxide, obtained from seawater of air, and hydrogen obtained from water, with a catalyst in a chemical process such as reverse water gas shift combined with Fischer Tropsch synthesis. The hydrogen is produced by nuclear reactor electricity, nuclear waste heat conversion, ocean thermal energy conversion, or any other source that is fossil fuel-free, such as wind or wave energy. The process can be either land based or sea based.

US Patent:

8017658, Sep 13, 2011

Filed:

Sep 5, 2007

Appl. No.:

11/850051

Inventors:

Nick E Tran - Washington DC, US
Dennis R Hardy - Alexandria VA, US
Samuel G Lambrakos - Alexandria VA, US
John G. Michopoulos - Washington DC, US

Assignee:

The United States of America as represented by the Secretary of the Navy - Washington DC

International Classification:

C07C 27/00

US Classification:

518715, 518700, 518717, 518726

Abstract:

A method of: introducing hydrogen and a feed gas containing at least 50 vol % carbon dioxide into a reactor containing a Fischer-Tropsch catalyst; and heating the hydrogen and carbon dioxide to a temperature of at least about 190 C. to produce hydrocarbons in the reactor. An apparatus having: a reaction vessel for containing a Fischer-Tropsch catalyst, capable of heating gases to at least about 190 C. ; a hydrogen delivery system feeding into the reaction vessel; a carbon dioxide delivery system for delivering a feed gas containing at least 50 vol % carbon dioxide feeding into the reaction vessel; and a trap for collecting hydrocarbons generated in the reaction vessel.

US Patent:

8313557, Nov 20, 2012

Filed:

Jun 25, 2009

Appl. No.:

12/491460

Inventors:

Heather D. Willauer - Fairfax Station VA, US
Dennis R Hardy - California MD, US
M. Kathleen Lewis - Lake Ariel PA, US
Ejiogu C. Ndubizu - Burtonsville MD, US
Frederick Williams - Accokeek MD, US

Assignee:

The United States of America, as represented by the Secretary of the Navy - Washington DC

International Classification:

B01D 53/22
C01B 31/20

US Classification:

95 51, 95 46, 96 4, 96 6, 96 11, 96 12

Abstract:

The present invention is generally directed to a system for recovering COfrom seawater or aqueous bicarbonate solutions using a gas permeable membrane with multiple layers. At elevated pressures, gaseous COand bound COin the ionic form of bicarbonate and carbonate diffuse from the seawater or bicarbonate solution through the multiple layers of the membrane. Also disclosed is the related method of recovering COfrom seawater or aqueous bicarbonate solutions.

US Patent:

8435457, May 7, 2013

Filed:

Jul 13, 2011

Appl. No.:

13/181566

Inventors:

Nick E Tran - Washington DC, US
Dennis R Hardy - California MD, US
Samuel G Lambrakos - Alexandria VA, US
John G. Michopoulos - Washington DC, US

Assignee:

The United States of America, as represented by the Secretary of the Navy - Washington DC

International Classification:

B01J 8/02
B01J 19/00

US Classification:

422211, 422198, 422187, 422129

Abstract:

A method of: introducing hydrogen and a feed gas containing at least 50 vol % carbon dioxide into a reactor containing a Fischer-Tropsch catalyst; and heating the hydrogen and carbon dioxide to a temperature of at least about 190 C. to produce hydrocarbons in the reactor. An apparatus having: a reaction vessel for containing a Fischer-Tropsch catalyst, capable of heating gases to at least about 190 C. ; a hydrogen delivery system feeding into the reaction vessel; a carbon dioxide delivery system for delivering a feed gas containing at least 50 vol % carbon dioxide feeding into the reaction vessel; and a trap for collecting hydrocarbons generated in the reaction vessel.

US Patent:

20130039837, Feb 14, 2013

Filed:

Aug 10, 2012

Appl. No.:

13/571383

Inventors:

Heather D. Willauer - Fairfax Station VA, US
John Barile - Summit Point WV, US
Felice DiMascio - Rock Hill CT, US
Dennis R. Hardy - Alexandria VA, US
Frederick Williams - Accokeek MD, US

International Classification:

C01B 31/20

US Classification:

423438

Abstract:

A method for recovering carbon dioxide from acidified seawater using a membrane contactor and passing seawater with a pH less than or equal to 6 over the outside of a hollow fiber membrane tube while applying vacuum or a hydrogen sweep gas to the inside of the hollow fiber membrane tube, wherein up to 92% of the re-equilibrated [CO]is removed from the natural seawater.

US Patent:

52994490, Apr 5, 1994

Filed:

Apr 30, 1992

Appl. No.:

7/875955

Inventors:

Dennis R. Hardy - Alexandria VA
Erna J. Beal - Fort Washington MD
Jack C. Burnett - Oxon Hill MD

Assignee:

The United States of America as represented by the Secretary of the Navy - Washington DC

International Classification:

G01N 500

US Classification:

73 6162

Abstract:

The tendency of liquid hydrocarbon-based fuels, such as kerosene, diesel l, and jet fuel toward the formation of fuel-insoluble solids during thermal stress in an aircraft fuel system is assessed by an accelerated test method comprising passing a predetermined quantity of a sample of fuel through a heated test section maintained at a predetermined temperature, at a predetermined fuel flow rate. A metal test strip, weighed before the test, is clamped in the heated test section during the test. It is weighed again after the test and the weight of solids buildup during the test is determined. It is related directly to the tendency of the fuel to form fuel-insoluble solids during thermal stress. A filter is weighed before the test. It is then connected to the outlet of the test section, and liquid fuel leaving the test section during the test is passed through it.

US Patent:

51622351, Nov 10, 1992

Filed:

Jun 27, 1989

Appl. No.:

7/371782

Inventors:

Dennis R. Hardy - Alexandria VA
Erna J. Beal - Fort Washington MD
Jack C. Burnett - Oxon Hill MD

Assignee:

The United States of America as represented by the Secretary of the Navy - Washington DC

International Classification:

G01N 500
G01N 2554
G01N 3322

US Classification:

436177

Abstract:

Reactions leading to insoluble sediments formation in distillate fuel are accelerated by forcing oxygen into solution in the fuel at pressures of between about 90 and 110 psig and then stressing the fuel under conditions of accelerated storage at temperatures of between about 40. degree. C. to 100. degree. C. The method then makes use of gravimetric determination of the total insolubles formed. The stability of the fuel over a period of time as well as its comparative stability to other fuels can then be predicted from the amount of insolubles formed. The method can be carried out by using a specialized pressure vessel.

US Patent:

57050872, Jan 6, 1998

Filed:

May 31, 1996

Appl. No.:

8/655789

Inventors:

George W. Mushrush - Oakton VA
Dennis Hardy - Alexandria VA

Assignee:

The United States of America as represented by the Secretary of the Navy - Washington DC

International Classification:

C09K 318

US Classification:

252 70

Abstract:

This invention pertains to hydrocarbon fuel composition and deicing compoion prepared with a compound selected from the group consisting of acetals, ketals, esters, derivatives thereof and mixtures thereof; and a process for deicing a substrate using the noted deicing composition.