Joseph Young Gentry

US Patent:

53992440, Mar 21, 1995

Filed:

Dec 6, 1993

Appl. No.:

8/163025

Inventors:

Joseph C. Gentry - Dallas TX
Lloyd Berg - Bozeman MT
John C. McIntyre - Hackettstown NJ
Randa W. Wytcherley - Belgrade MT

Assignee:

Glitsch, Inc. - Dallas TX

International Classification:

B01D 340
C07C 708

US Classification:

203 23

Abstract:

Benzene and other aromatics are separated from a stream of mixed hydrocarbons containing both aromatics and non-aromatics by extractive distillation with a solvent system containing dimethyl sulfoxide and optionally a co-solvent, preferably water, followed by distillation stripping of the aromatics from the enriched solvent system, and recycle of the lean solvent system to the extractive distillation step.

US Patent:

54095794, Apr 25, 1995

Filed:

Jul 12, 1993

Appl. No.:

8/090765

Inventors:

Ronald G. Gualy - Arlington TX
Wiston Lamshing - Veracruz, MX
Joseph C. Gentry - Dallas TX
Fernando Varela - Minatitlan, MX

Assignee:

Glitsch, Inc. - Dallas TX

International Classification:

B01D 314
B01D 1100
C07C 5144

US Classification:

203 16

Abstract:

Disclosed is a method and apparatus for recovering acetic acid from an acetic acid/water waste stream which includes a dehydration column into which the stream is fed and a liquid-liquid extraction system for recovering acetic acid from the condensate of the overhead stream of the dehydration column. Optionally, low pressure and/or high pressure absorber systems are provided to process vapor and/or liquid streams associated with the recovery system and/or the plant in which the acetic acid is used to further the recovery of acetic acid and reduce atmospheric pollution.

US Patent:

53997514, Mar 21, 1995

Filed:

Nov 5, 1993

Appl. No.:

8/147394

Inventors:

Joseph C. Gentry - Dallas TX
John C. McIntyre - Hackettstown NJ
Timothy L. Holmes - Kingwood TX
Ronald G. Gualy - Dallas TX

Assignee:

Glitsch, Inc. - Dallas TX

International Classification:

C07C 5142

US Classification:

562608

Abstract:

Disclosed is a method for recovering carboxylic acids having from one to ten carbon atoms, and particularly formic acid, acetic acid and mixtures of formic and acetic acids, from aqueous solutions, in which the aqueous solution is contacted with solvent consisting essentially of mixed trialkylphosphine oxides in counter-current liquid-liquid extraction flow in a contacting step to thereby transfer the acids from the aqueous solution to the solvent, thus producing a raffinate relatively low in acid content and a rich solvent. The rich solvent is preferably dehydrated to separate water therefrom and yield a dehydrated rich solvent. The dehydrated rich solvent then has the acids stripped from it and the resulting lean solvent is then returned to the liquid-liquid extraction step, while the separated acids are split into their constituent components in a distillation operation.

US Patent:

54926033, Feb 20, 1996

Filed:

Mar 15, 1994

Appl. No.:

8/187084

Inventors:

Ronald G. Gualy - Arlington TX
Wiston Lamshing - Cosoleacaque, MX
Joseph C. Gentry - Dallas TX
Fernando Varela - Minatitlan, MX

Assignee:

Glitsch, Inc. - Dallas TX

International Classification:

B01D 316
B01D 1104

US Classification:

202158

Abstract:

Disclosed is a method and apparatus for recovering acetic acid from an acetic acid/water waste stream which includes a dehydration column into which the stream is fed and a liquid-liquid extraction system for recovering acetic acid from the condensate of the overhead stream of the dehydration column. Optionally, low pressure and/or high pressure absorber systems are provided to process vapor and/or liquid streams associated with the recovery system and/or the plant in which the acetic acid is used to further the recovery of acetic acid and reduce atmospheric pollution.

US Patent:

52778479, Jan 11, 1994

Filed:

Aug 10, 1992

Appl. No.:

7/927749

Inventors:

Joseph C. Gentry - Dallas TX
Michael J. Binkley - Desoto TX

Assignee:

Glitsch, Inc. - Dallas TX

International Classification:

B01F 304

US Classification:

2611141

Abstract:

Improved catalyst-downcomer-tray assemblies for vapor liquid contact towers. Downcomers are constructed for receipt of bundles of catalyst media used to promote chemical reactions therein. Raised, perforated regions of the underlying trays are then disposed therebeneath for improving mass transfer efficiency. The raised regions reduce fluid pressure to vent excess vapor from downcomers and trays therebeneath. The vapor generated within the downcomers from the catalytic reaction may then be selectively directed into the liquid discharged from the downcomer disposed on the tray above and imparted with a horizontal flow characteristic. In this manner the catalytic reaction vapors can be effectively released to facilitate a stabilized vapor-liquid flow configuration with improved chemical reaction occurring in the downcomer of the process tower.

US Patent:

53893433, Feb 14, 1995

Filed:

Oct 5, 1993

Appl. No.:

8/132059

Inventors:

Joseph C. Gentry - Dallas TX

Assignee:

Glitsch, Inc. - Dallas TX

International Classification:

B01J 804
B01J 806

US Classification:

422191

Abstract:

Improved catalyst assemblies for vapor/liquid contact towers. Bundles of catalyst media used to promote chemical reactions are disposed substantially in the vapor phase of the tower, such as beneath trays therein for improving mass transfer efficiency. Unlike previous assemblies, wherein distillation in conjunction with chemical reaction occurs in the liquid phase or in a mixed phase, the present invention substantially confines the reaction step to the vapor phase. In this manner, the reaction is less obstructive to fluid flow within the tower, promoting better mixing and diffusion of the feed components in the vapor phase. In addition, less turbulence is created and the handling of vapors generated from an exothermic reaction is facilitated. The design and control of the chemical reaction may also be more precise with distinct and separate zones of catalyst media.