David E Warren

US Patent:

8304730, Nov 6, 2012

Filed:

Jun 1, 2010

Appl. No.:

12/791604

Inventors:

Nielson Wade Schulenburg - Herndon VA, US
David Wheeler Warren - Los Angeles CA, US
Donald J. Rudy - San Pedro CA, US
Michael G. Martino - Inwood WV, US
Mark Alan Chatelain - Amissville VA, US
Michael Arthur Rocha - Centreville VA, US

Assignee:

The Aerospace Corporation - El Segundo CA

International Classification:

G01J 5/00

US Classification:

2503381

Abstract:

A method for measuring spectral characteristics includes capturing spectral-spatial data that includes radiance measurements over spectrally flat, highly emissive surface portions of a sample material and heater at least two different heater temperatures for transmissive and/or emissive configurations. Temperatures of the sample material and heater are determined at the different heater temperatures for each configuration using, in each instance, radiance measurements taken after the temperatures of the heater and sample material have both stabilized. The transmissivity of the sample material is determined using the temperatures determined in the transmissive configuration and spectral-spatial data collected at selected points of interest over the sample material. The emissivity of the sample material is determined using the temperatures determined in the emissive configuration, the spectral-spatial data collected at selected points of interest over the sample material, and the transmissivity. The reflectivity of the sample material is determined using the emissivity and transmissivity.

US Patent:

61497657, Nov 21, 2000

Filed:

Nov 12, 1996

Appl. No.:

8/747581

Inventors:

Momtaz Nosshi Mansour - Columbia MD
David Walter Warren - Sherman Oaks CA

Assignee:

Manufacturing & Technology Conversion International, Inc.

International Classification:

A62D 300

US Classification:

162 29

Abstract:

Resonant tubes of a pulse combustor are immersed in a bed of solid particles in a reaction zone to provide indirect heat from the pulsating combustion gases to the solid particles of the bed. The bed is maintained in an agitated state by a gas or vapor flowing through the bed. Reactant materials are introduced into the agitated bed and undergo reaction at enhanced rates resulting from heat transfer coefficients at least about twice as high as those of steady flow combustors and an intense acoustic pressure level propagated from the pulsating combustor into the reaction zone. The apparatus is useful, for example, to steam reform heavy hydrocarbons and to gasify carbonaceous material, including biomass and black liquor to produce combustible gas at relatively low temperatures, with steam being utilized as the bed fluidizing medium. Black liquor gasification, utilizing sodium carbonate as bed solids, results in liquor energy and chemical content recovery without smelt production.

US Patent:

55364888, Jul 16, 1996

Filed:

Feb 7, 1995

Appl. No.:

8/385082

Inventors:

Momtaz N. Mansour - Columbia MD
David W. Warren - Sherman Oaks CA

Assignee:

Manufacturing and Technology Conversion - Columbia MD

International Classification:

C01B 326

US Classification:

423652

Abstract:

Resonant tubes of a pulse combustor are immersed in a bed of solid particles in a reaction zone to provide indirect heat from the pulsating combustion gases to the solid particles of the bed. The bed is maintained in an agitated state by a gas or vapor flowing through the bed. Reactant materials are introduced into the agitated bed and undergo reaction at enhanced rates resulting from heat transfer coefficients at least about twice as high as those of steady flow combustors and an intense acoustic pressure level propagated from the pulsating combustor into the reaction zone. The apparatus is useful, for example, to steam reform heavy hydrocarbons and to gasify carbonaceous material, including biomass and black liquor to produce combustible gas at relatively low temperatures, with steam being utilized as the bed fluidizing medium. Black liquor gasification, utilizing sodium carbonate as bed solids, results in liquor energy and chemical content recovery without smelt production.

US Patent:

53064810, Apr 26, 1994

Filed:

Jul 1, 1991

Appl. No.:

7/724156

Inventors:

Momtaz N. Mansour - Columbia MD
David W. Warren - Sherman Oaks CA

Assignee:

Manufacturing and Technology Conversion International, Inc. - Columbia MD

International Classification:

C01B 326

US Classification:

423652

Abstract:

Resonant tubes of a pulse combustor are immersed in a bed of solid particles in a reaction zone to provide indirect heat from the pulsating combustion gases to the solid particles of the bed. The bed is maintained in an agitated state by a gas or vapor flowing through the bed. Reactant materials are introduced into the agitated bed and undergo reaction at enhanced rates resulting from heat transfer coefficients at least about twice as high as those of steady flow combustors and an intense acoustic pressure level propagated from the pulsating combustor into the reaction zone. The apparatus is useful, for example, to steam reform heavy hydrocarbons and to gasify carbonaceous material, including biomass and black liquor to produce combustible gas at relatively low temperatures, with steam being utilized as the bed fluidizing medium. Black liquor gasification, utilizing sodium carbonate as bed solids, results in liquor energy and chemical content recovery without smelt production.

US Patent:

50594044, Oct 22, 1991

Filed:

Feb 14, 1989

Appl. No.:

7/310202

Inventors:

Momtaz N. Mansour - Columbia MD
David W. Warren - Sherman Oaks CA

Assignee:

Manufacturing and Technology Conversion International, Inc. - Columbia MD

International Classification:

B01J 818
C01B 302
D21C 1112
F27B 1514

US Classification:

423201

Abstract:

Resonant tubes of a pulse combustor are immersed in a bed of solid particles in a reaction zone to provide indirect heat from the pulsating combustion gases to the solid particles of the bed. The bed is maintained in an agitated state by a gas or vapor flowing through the bed. Reactant materials are introduced into the agitated bed and undergo reaction at enhanced rates resulting from heat transfer coefficients at least about twice as high as those of steady flow combustors and an intense acoustic pressure level propagated from the pulsating combustor into the reaction zone. The apparatus is useful, for example, to steam reform heavy hydrocarbons and to gasify carbonaceous material, including biomass and black liquor to produce combustible gas at relatively low temperatures, with steam being usilized as the bed fluidizing medium. Black liquor gasification, utilizing sodium carbonate as bed solids, results in liquor energy and chemical content recovery without smelt production.

US Patent:

56371926, Jun 10, 1997

Filed:

May 11, 1995

Appl. No.:

8/439456

Inventors:

Momtaz N. Mansour - Columbia MD
David W. Warren - Sherman Oaks CA

Assignee:

Manufacturing and Technology Conversion International - Columbia MD

International Classification:

D21C 1112

US Classification:

162 29

Abstract:

Resonant tubes of a pulse combustor are immersed in a bed of solid particles in a reaction zone to provide indirect heat from the pulsating combustion gases to the solid particles of the bed. The bed is maintained in an agitated state by a gas or vapor flowing through the bed. Reactant materials are introduced into the agitated bed and undergo reaction at enhanced rates resulting from heat transfer coefficients at least about twice as high as those of steady flow combustors and an intense acoustic pressure level propagated from the pulsating combustor into the reaction zone. The apparatus is useful, for example, to steam reform heavy hydrocarbons and to gasify carbonaceous material, including biomass and black liquor to produce combustible gas at relatively low temperatures, with steam being utilized as the bed fluidizing medium. Black liquor gasification, utilizing sodium carbonate as bed solids, results in liquor energy and chemical content recovery without smelt production.