GARY A SAWYER
Engineers in Delaware
License number
Pennsylvania PE085308
Category
Engineers
Type
Professional Engineer
Address
Address
2
Delaware
Media, PA 19063
Media, PA 19063
Professional information
Propylene Oxide Purification
US Patent:
6500311, Dec 31, 2002
Filed:
Sep 21, 2001
Appl. No.:
09/957591
Inventors:
Gary A. Sawyer - Media PA
Assignee:
Arco Chemical Technology, L.P. - Greenville DE
International Classification:
B01D 340
US Classification:
203 44, 203 68, 203 70, 203 74, 203 76, 203 79, 549538, 549541, 568913
Abstract:
A mixture of propylene oxide and methanol is separated by liquid/liquid extraction using water and a hydrocarbon such as n-octane as extractive solvents.
Purification Of Propylene Oxide
US Patent:
8389750, Mar 5, 2013
Filed:
Sep 28, 2010
Appl. No.:
12/924457
Inventors:
Gary A. Sawyer - Media PA, US
Assignee:
Lyondell Chemical Technology, L.P. - Houston TX
International Classification:
C07D 301/19, C07D 301/32
US Classification:
549529, 549541
Abstract:
The invention is a method of purifying propylene oxide containing acetone, water, methanol, methyl formate, aldehydes, and hydrocarbons impurities. The method comprises contacting the propylene oxide with a glycol and a Cor greater alkane in a liquid/liquid solvent extraction, and separating propylene oxide having reduced impurities content. The purified propylene oxide may be produced by reacting propylene and a hydroperoxide to produce a crude propylene oxide effluent, distilling the crude effluent to produce a propylene oxide stream which contains 1-5 weight percent of the impurities, contacting the propylene oxide stream with a glycol and a Cor greater alkane in a liquid/liquid solvent extraction, then separating an alkane fraction comprising propylene oxide from a glycol fraction, and distilling the alkane fraction in one or more steps to produce an alkane bottoms stream and a propylene oxide product having less than 0. 1 weight percent impurities.
Propylene Production
US Patent:
8119849, Feb 21, 2012
Filed:
Dec 29, 2008
Appl. No.:
12/317794
Inventors:
Gary A. Sawyer - Media PA, US
Michael G. Axelrod - Newtown Square PA, US
Michael G. Axelrod - Newtown Square PA, US
Assignee:
Lyondell Chemical Technology, L.P. - Houston TX
International Classification:
C07C 6/04, C07C 5/27
US Classification:
585324, 585643, 585671
Abstract:
A propylene production process is disclosed. The process comprises (a) reacting a feed stream comprising isobutene in the presence of a skeletal isomerization catalyst to obtain an isomerized stream comprising Colefins; and (b) reacting the isomerized stream with ethylene in the presence of a metathesis catalyst to form a metathesis product stream comprising propylene, Colefins, and C+ olefins. The metathesis reaction pressure is equal to or lower than that of the skeletal isomerization.
Production Of 1-Butene And Propylene From Ethylene
US Patent:
8395005, Mar 12, 2013
Filed:
Oct 13, 2010
Appl. No.:
12/903794
Inventors:
Steven T. Coleman - Humble TX, US
Gary A. Sawyer - Media PA, US
Robert S. Bridges - Friendswood TX, US
Gary A. Sawyer - Media PA, US
Robert S. Bridges - Friendswood TX, US
Assignee:
Equistar Chemicals, LP - Houston TX
Lyondell Chemical Technology, L.P. - Houston TX
Lyondell Chemical Technology, L.P. - Houston TX
International Classification:
C07C 6/04, C07C 5/25, C07C 2/06
US Classification:
585324, 585326, 585329, 585643, 585646, 585510, 585664
Abstract:
A process for producing propylene and 1-butene is disclosed. The process comprises dimerizing ethylene in the presence of a dimerization catalyst to produce a dimerization mixture comprising 1-butene and 2-butenes. The dimerization mixture is distilled to produce a 1-butene stream containing 1-butene and ethylene, a 2-butenes stream, and a heavy stream. The 2-butenes stream is reacted with ethylene in the presence of a metathesis catalyst to produce a metathesis mixture comprising propylene, ethylene, and 2-butenes. Propylene is separated from the metathesis mixture.
Propylene Oxide Process
US Patent:
7741498, Jun 22, 2010
Filed:
Aug 29, 2008
Appl. No.:
12/231220
Inventors:
Te Chang - West Chester PA, US
Gary A. Sawyer - Media PA, US
Gary A. Sawyer - Media PA, US
Assignee:
Lyondell Chemical Technology, L.P. - Greenville DE
International Classification:
C07D 301/06
US Classification:
549532, 549533
Abstract:
A process for making propylene oxide from propylene is disclosed. The process comprises reacting propylene, oxygen, and hydrogen in the presence of a catalyst and a solvent to produce a reaction mixture comprising propylene oxide. Separation of propylene, oxygen, hydrogen, and propylene oxide from the reaction mixture results in a residual mixture comprising methanol. A portion of the residual mixture is recycled to the reaction. A portion of the residual mixture is distilled to generate a distilled methanol stream, which is recycled to the reaction.
In Situ Filtration Draught Tube Reactor System
US Patent:
2004012, Jul 1, 2004
Filed:
Dec 30, 2002
Appl. No.:
10/331703
Inventors:
Gary Sawyer - Media PA, US
Mark Liepa - Exton PA, US
Prakash Balan - Wilmington DE, US
Mark Liepa - Exton PA, US
Prakash Balan - Wilmington DE, US
International Classification:
B01D011/00
US Classification:
210/634000, 210/323200, 210/484000, 210/497010
Abstract:
Reduced attrition of catalyst and extended operation of heterogenous catalyzed slurry reactions in draught tube reactors is facilitated by locating vertically oriented filter media within the draught tube reactor annular space to provide a product outlet stream substantially free of catalyst.
Preparation Of Acetic Acid
US Patent:
7485749, Feb 3, 2009
Filed:
Aug 22, 2006
Appl. No.:
11/508109
Inventors:
Gary A. Sawyer - Media PA, US
Wayne J. Brtko - Glen Mills PA, US
Ronnie M. Hanes - Crofton MD, US
Brian A. Salisbury - Oxford PA, US
Wayne J. Brtko - Glen Mills PA, US
Ronnie M. Hanes - Crofton MD, US
Brian A. Salisbury - Oxford PA, US
Assignee:
Lyondell Chemical Technology, L.P. - Greenville DE
Millennium Petrochemicals inc. - Houston TX
Millennium Petrochemicals inc. - Houston TX
International Classification:
C07C 51/42
US Classification:
562608
Abstract:
A method for removing aldehyde impurities from an acetic acid stream is disclosed. The method comprises reacting aldehyde impurities with a hydroxyl compound in a drying distillation column or a combined column to form corresponding acetals. The acetals are subsequently removed as heavy impurities from acetic acid by distillation.
Propylene Production Process
US Patent:
2013017, Jul 4, 2013
Filed:
Feb 22, 2013
Appl. No.:
13/774723
Inventors:
Steven T. Coleman - Humble TX, US
Gary A. Sawyer - Media PA, US
Robert S. Bridges - Friendswood TX, US
Shaotian Wang - Downingtown PA, US
Lawrence M. Candela - Houston TX, US
Gary A. Sawyer - Media PA, US
Robert S. Bridges - Friendswood TX, US
Shaotian Wang - Downingtown PA, US
Lawrence M. Candela - Houston TX, US
Assignee:
Equistar Chemicals, LP - Houston TX
Lyondell Chemical Technology, L.P. - Houston TX
Lyondell Chemical Technology, L.P. - Houston TX
International Classification:
C07C 6/04
US Classification:
585329, 585644
Abstract:
Processes and systems for forming propylene are described herein. The processes generally include reacting a metathesis feed stream including at least 95 wt. % 2-butene with ethylene in the presence of a metathesis catalyst to form a metathesis product stream including propylene, and recovering propylene from the process.
Process For Producing Allyl Acetate
US Patent:
8067634, Nov 29, 2011
Filed:
Oct 30, 2009
Appl. No.:
12/589933
Inventors:
Gary A. Sawyer - Media PA, US
Elizabeth I. Ross-Medgaarden - West Grove PA, US
Andrew P. Kahn - Eagleville PA, US
Elizabeth I. Ross-Medgaarden - West Grove PA, US
Andrew P. Kahn - Eagleville PA, US
Assignee:
Lyondell Chemical Technology, L.P. - Houston TX
International Classification:
C07C 67/02
US Classification:
560261
Abstract:
A process for producing allyl acetate is disclosed. The process comprises reacting propylene, acetic acid, and oxygen in the presence of a supported palladium catalyst in an adiabatic reactor.
Esterification Process Heat Recovery
US Patent:
5872269, Feb 16, 1999
Filed:
May 8, 1998
Appl. No.:
/074680
Inventors:
Gary A. Sawyer - Media PA
Assignee:
Arco Chemical Technology, L.P. - Greenville DE
International Classification:
C07C 5100, C07C 51363
US Classification:
554169
Abstract:
Economics of heat are achieved in a process for batch fatty acid esterification of alkoxylated polyol by transferring the reaction mixture to a holding vessel and subsequently heating fresh feed to the batch reaction by indirect heat exchange with the transferred reaction mixture.