Ruth J Davis

US Patent:

20090247800, Oct 1, 2009

Filed:

Nov 4, 2008

Appl. No.:

12/264443

Inventors:

Ruth A. Davis - Allentown PA, US
Norman Macleod - Hartlepool, GB
Gordon Edward Wilson - Norton, GB

Assignee:

Air Products and Chemicals, Inc. - Allentown PA
Johnson Matthey PLC - London

International Classification:

C07C 5/02

US Classification:

585275, 585250

Abstract:

A process for hydrogenating olefins is disclosed. The olefins are present in a feed gas which includes Hand one or more sulfur compounds. The sulfur compounds may include HS and organic sulfur compounds. The feed gas is passed through a reactor at an inlet temperature from 100 C. to 250 C. The reactor contains a catalyst which is active at the inlet temperature. The reactor may be adiabatic. Saturated hydrocarbons are formed from the olefins. A temperature gradient may be formed in the reactor due to the exothermic nature of the hydrogenation reaction, causing the temperature to increase downstream in the reactor. At temperatures higher than the inlet temperature, HS may be formed from organic sulfur compounds. A gas mixture including saturated hydrocarbons, HS and Hexits the reactor and may be brought into contact with a chemical adsorbent which removes the HS. The gas stream may then be passed to a steam methane reformer.

US Patent:

50116703, Apr 30, 1991

Filed:

Mar 7, 1989

Appl. No.:

7/320206

Inventors:

Ruth A. Davis - Allentown PA
David M. Nicholas - New Tripoli PA
Dale D. Smith - Allentown PA
Richard A. Wright - Macungie PA

Assignee:

Air Products and Chemicals, Inc. - Allentown PA

International Classification:

C01B 3162
C09C 148

US Classification:

423450

Abstract:

Carbon black is produced from a pyrolyzed hydrocarbon wherein pyrolysis is effected by combusting a synthesis gas containing hydrogen and carbon monoxide. The synthesis gas is produced from reforming a hydrocarbon fuel, wherein the reformation is heated by combusting carbon black effluent tail gas or indirect heat exchange of the hot tail gas.

US Patent:

48570826, Aug 15, 1989

Filed:

Sep 15, 1988

Appl. No.:

7/244769

Inventors:

Stephen P. DiMartino - Topton PA
Jeffrey A. Hopkins - Whitehall PA
Ruth A. Davis - Allentown PA

Assignee:

Air Products and Chemicals, Inc. - Allentown PA

International Classification:

B01D 5322

US Classification:

55 16

Abstract:

A permeator system for separating at least one gaseous component from a feed gas mixture containing at least one other component using a semi-permeable membrane is disclosed which maintains high permeate product purity and desired component recovery during periods of turn-down in capacity. In accordance with the present invention, the permeator system contains a series of flow and pressure sensors and valves which regulate differential pressure across the membrane based upon permeate product demand or feed availability.

US Patent:

46629190, May 5, 1987

Filed:

Feb 20, 1986

Appl. No.:

6/831374

Inventors:

Ruth A. Davis - Allentown PA

Assignee:

Air Products and Chemicals, Inc. - Allentown PA

International Classification:

F25J 302

US Classification:

62 25

Abstract:

The present invention is directed to a gas separation system for separating or rejecting nitrogen from a natural gas feed containing nitrogen, over a wide range of nitrogen concentrations, under elevated pressure using a single distillation column with two intermediate side condensers and a closed loop heat pump which reboils and partially refluxes the column. The lower of the intermediate condensers is cooled by heat exchange with the heat pump fluid and the overhead nitrogen fraction of the column. The upper of the intermediate condensers is cooled by heat exchange with the overhead nitrogen fraction of the column. The process can handle feeds with increasing nitrogen composition and more than 100 vppm carbon dioxide. The process provides a high methane recovery over the entire feed range, and provides a nitrogen product having an elevated pressure suitable for recycling and reinjection into an oil or gas well to maintain well head pressure.

US Patent:

47325984, Mar 22, 1988

Filed:

Nov 10, 1986

Appl. No.:

6/929045

Inventors:

Howard C. Rowles - Center Valley PA
Ruth A. Davis - Allentown PA

Assignee:

Air Products and Chemicals, Inc. - Allentown PA

International Classification:

F25J 304

US Classification:

62 28

Abstract:

A process is disclosed for the rejection of nitrogen from natural gas with the optional recovery of natural gas liquids. The process of the present invention employs a dephlegmator which provides a high purity nitrogen reflux for a low pressure distillation column and provides subcooling of the feed and reflux to the low pressure column and reboiling of the low pressure column. The dephlegmator of the present invention combines the high pressure column and three heat exchangers of a conventional double column process into a single, compact unit, with corresponding reductions in interconnecting piping and capital investment.

US Patent:

45042950, Mar 12, 1985

Filed:

Jun 1, 1983

Appl. No.:

6/499954

Inventors:

Ruth A. Davis - Whitehall PA
Donn M. Herron - Trexlertown PA
James W. Pervier - West Chester PA
Harvey L. Vines - Emmaus PA

Assignee:

Air Products and Chemicals, Inc. - Allentown PA

International Classification:

F25J 302

US Classification:

62 30

Abstract:

A process is set forth for the recovery of methane, nitrogen and natural gas liquids (C. sub. 2+) from a natural gas feed stream wherein the recovery can be made at high pressure by the integration of a nitrogen rejection stage including a heat pump driven distillation column and a natural gas liquids stage. Nitrogen can be rejected over a wide range of nitrogen concentration (approximately 1 to about 80%) of the feed stream.