Wei Lun Huang

US Patent:

6367328, Apr 9, 2002

Filed:

Jul 11, 2000

Appl. No.:

09/613704

Inventors:

Michael R. Gorman - Englewood CO
Steven M. Ziola - Littleton CO
Wei Huang - Highlands Ranch CO

Assignee:

Digital Wave Corporation - Englewood CO

International Classification:

G01N 2900

US Classification:

73592, 73598, 73290 R, 73622, 73624, 73597, 73644

Abstract:

Ultrasonic energy in the form of guided waves is launched into the wall of a fluid-filled container. The guided wave propagates around the circumference of the container from a transmitting transducer to a receiving transducer. Part of the guide wave energy leaks into the fluid in the form of bulk waves, reflects off the inner wall on the other side and enters back to the receiving transducer trailing the direct wave. Analysis of the received waves determines the presence of corrosion pitting and MIC nodules on the container inner wall, and fluid level. In addition, it determines whether foreign objects are inside the container. The guided waves are created with wideband transducers excited at certain frequencies that depend on the material and geometry of the part being measured. The leakage energy is maximized with a shaped tone burst pulse at the specified frequency. The energy and energy ratio of both the direct and leakage fields are measured and related to the container inner wall condition and the presence of any foreign objects in the fluid.

US Patent:

6595059, Jul 22, 2003

Filed:

Jan 23, 2002

Appl. No.:

10/057405

Inventors:

Michael R. Gorman - Englewood CO
Steven M. Ziola - Littleton CO
Wei Huang - Highlands Ranch CO

Assignee:

Digital Wave Corporation - Englewood CO

International Classification:

G01N 2900

US Classification:

73592, 598290 R, 598 405 A

Abstract:

Ultrasonic energy in the form of guided waves is launched into the wall of a fluid-filled container. The guided wave propagates around the circumference of the container from a transmitting transducer to a receiving transducer. Part of the guide wave energy leaks into the fluid in the form of bulk waves, reflects off the inner wall on the other side and enters back to the receiving transducer trailing the direct wave. Analysis of the received waves determines the presence of corrosion pitting and MIC nodules on the container inner wall, and fluid level. In addition, it determines whether foreign objects are inside the container. The guided waves are created with wideband transducers excited at certain frequencies that depend on the material and geometry of the part being measured. The leakage energy is maximized with a shaped tone burst pulse at the specified frequency. The energy and energy ratio of both the direct and leakage fields are measured and related to the container inner wall condition and the presence of any foreign objects in the fluid.

US Patent:

20100147749, Jun 17, 2010

Filed:

Dec 10, 2009

Appl. No.:

12/635145

Inventors:

Pascal Tromeur - Wilmington DE, US
Pavol Pranda - Hockessin DE, US
Wei Huang - Newark DE, US
Jingguang G. Chen - Hockessin DE, US

Assignee:

American Air Liquide, Inc. - Fremont CA

International Classification:

C10G 29/16
B01J 23/56
B01J 23/755
B01J 23/89
B01J 23/75

US Classification:

208244, 502326, 502330, 502337

Abstract:

The present invention relates to multi-metallic catalyst compositions for improved coke resistance in a hydrocarbon feed pre-reformer unit that comprises nickel and an enhancing component selected from at least one member of the group consisting of ruthenium, palladium, platinum, rhodium, cobalt, gold and silver on a support. The present invention further relates to a catalyst system for improved coke and sulfur resistance in a hydrocarbon feed pre-reformer unit that comprises at least one multi-metallic catalyst composition comprising nickel and an enhancing component selected from at least one member of the group consisting of ruthenium, palladium, platinum, rhodium, cobalt, gold and silver on a support used in conjunction with at least one sulfur capturing component selected from the group comprising copper oxide and zinc oxide. Finally the present invention relates to the use of this catalyst system in a process for pre-reforming a hydrocarbon feed stream.