Joseph H Peters

US Patent:

7752887, Jul 13, 2010

Filed:

Jan 22, 2008

Appl. No.:

12/017819

Inventors:

Maruti Bhandakar - E. Weymouth MA, US
Joseph Peters - Quincy MA, US

Assignee:

Stone & Webster, Inc. - Houston TX

International Classification:

G01N 21/06
G01N 27/00

US Classification:

73 3103, 356409, 436139, 422 86, 422 88

Abstract:

A method of measuring the level of an impurity in a gas comprises providing a gas detection tube having a internal volume containing a reagent which can react with said impurity to produce a compound capable of producing a color change in said tube such that the extent of the color change is proportional to the concentration of the impurity in said gas. A volume of the gas at least 1×10times the test volume of the gas detection tube is passed through the tube and the extent of the color change of the detector element is measured.

US Patent:

8445738, May 21, 2013

Filed:

Sep 23, 2009

Appl. No.:

13/119781

Inventors:

Shyh-Yuan Hwang - Needham MA, US
Dana E. Johnson - Hopkinton MA, US
Joseph C. Peters - Quincy MA, US
Chung-Ming Chi - Needham MA, US
Kevin J. Fallon - Boston MA, US
Francis A. Demers - Holderness NH, US

Assignee:

Badger Licensing LLC - Cambridge MA

International Classification:

C07C 2/86
C07C 37/08

US Classification:

585446, 585469, 568798

Abstract:

A process is described for producing cumene comprising contacting a feed stream comprising benzene and a further feed stream comprising isopropanol or a mixture of isopropanol and propylene in the presence of an alkylation catalyst comprising at least a molecular sieve of the MCM-22, family in an alkylation zone under alkylation conditions of at least partial liquid phase and with a water concentration in the liquid phase of at least 50 ppm to react at least part of said isopropanol and benzene to produce an effluent stream containing cumene.

US Patent:

20110201858, Aug 18, 2011

Filed:

Sep 23, 2009

Appl. No.:

13/119789

Inventors:

Shyh-Yuan Henry Hwang - Needham MA, US
Dana E. Johnson - Hopkinton MA, US
Joseph C. Peters - Quincy MA, US
Chung-Ming Chi - Needham MA, US
Kevin J. Fallon - Boston MA, US
Francis A. Demers - Holderness NH, US

Assignee:

BADGER LICENSING LLC - Cambridge MA

International Classification:

C07C 2/00

US Classification:

585314, 585323

Abstract:

In a process for producing cumene from acetone and benzene, a feed stream comprising acetone is contacted with hydrogen in the presence of a hydrogenation catalyst in a first reaction zone under hydrogenation conditions sufficient to convert at least part of the acetone to isopropanol and produce a first liquid effluent stream rich in isopropanol and a first vapor stream rich in unreacted hydrogen. Benzene is then added to at least part of the first liquid effluent stream, without intermediate purification of the first liquid effluent stream, and optionally to at least part of the first vapor stream, to form a second feed stream. The second feed stream is then contacted with an alkylation catalyst in a second reaction zone separate from the first reaction zone under alkylation conditions sufficient to maintain at least part of the second feed stream in the liquid phase and to cause at least part of the isopropanol in the second feed stream to react with the benzene to form cumene and water and produce a second effluent stream comprising at least cumene, water and unreacted benzene. Hydrogen is separated from the first vapor stream and/or the second effluent stream. At least part of the hydrogen is recycled to the first reaction zone and/or purged from the system.

US Patent:

20130324776, Dec 5, 2013

Filed:

Nov 30, 2011

Appl. No.:

13/982964

Inventors:

Shyh-Yuan H. Hwang - Needham MA, US
Ronald Birkhoff - Houston TX, US
Richard F. Guarino - Fairhaven MA, US
J. Erik Moy - South Grafton MA, US
Joseph C. Peters - Quincy MA, US

Assignee:

BADGER LICENSING LLC - Boston MA

International Classification:

C07C 2/64

US Classification:

585323

Abstract:

A process is disclosed for alkylating benzene contained in a benzene-containing refinery gasoline stream also comprising at least 0.1 wt % of at least one C6 to C8 olefin. In the process, the refinery gasoline stream is contacted under alkylation conditions with an alkylating agent selected from one or more C2 to C5 olefins in at least a first alkylation reaction zone and a second alkylation reaction zone connected in series to produce an alkylated effluent, which has reduced benzene content as compared with said refinery gasoline stream. All of the refinery gasoline stream is introduced into the first alkylation reaction stage, whereas an aliquot of the alkylated effluent is recycled and introduced to the second, but not the first, alkylation reaction zone.

US Patent:

20130331626, Dec 12, 2013

Filed:

Nov 30, 2011

Appl. No.:

13/982944

Inventors:

Shyh-Yuan H. Hwang - Needham MA, US
Ronald Birkhoff - Houston TX, US
Richard F. Guarino - Fairhaven MA, US
J. Erik Moy - South Grafton MA, US
Joseph C. Peters - Quincy MA, US

Assignee:

BADGER LICENSING LLC - Boston MA

International Classification:

C10G 49/08

US Classification:

585446, 585467

Abstract:

In a process for alkylating benzene contained in a benzene-containing refinery gasoline stream, the benzene-containing refinery gasoline stream is contacted with an alkylating agent selected from one or more C2 to C5 olefins in at least one alkylation reaction zone under alkylation conditions to produce an alkylated effluent which has reduced benzene content as compared with said refinery gasoline stream and is essentially free of said alkylating agent. An aliquot of the alkylated effluent is then recycled to the one at least one alkylation reaction zone such that the molar ratio of alkylatable aromatic compounds to said alkylating agent in the combined refinery gasoline and recycle streams introduced into the at least one alkylation reaction zone is at least 1.0:1.

US Patent:

47341920, Mar 29, 1988

Filed:

Jun 21, 1985

Appl. No.:

6/747687

Inventors:

Helena M. Champion - Swampscott MA
Joseph J. Pierog - Salem NH
Joseph E. Peters - Carlisle MA

Assignee:

Millipore Corporation - Bedford MA

International Classification:

B01D 1300

US Classification:

210335

Abstract:

A multiwell filtration apparatus for the assay of microliter quantities is provided which prevents fluid loss by capillary action and gravity flow through a microporous membrane or ultrafilter. The filtration apparatus is particularly advantageous in assays requiring maintenance of fluid within the reaction wells for substantial time periods and in small sample volume assays in the range of 100 microliter volumes.

US Patent:

57390711, Apr 14, 1998

Filed:

Mar 18, 1996

Appl. No.:

8/617965

Inventors:

Shyh-Yuan Hwang - Cambridge MA
Slawomir A. Oleksy - Billerica MA
Sanjeev Ram - Hingham MA
Joseph C. Peters - Quincy MA

Assignee:

Raytheon Engineers & Constructors, Inc. - Lexington MA

International Classification:

B01J 2034
B01J 3806
C07C 5333

US Classification:

502 53

Abstract:

A method and apparatus are disclosed for regenerating and/or stabilizing the activity of a dehydrogenation catalyst used in dehydrogenating an alkylaromatic hydrocarbon to obtain an alkenylaromatic hydrocarbon, the method comprising the steps of continuously or intermittently adding to a reactant stream an effective amount of an alkali metal or alkali metal compound without interrupting the dehydrogenation reaction.

US Patent:

56798784, Oct 21, 1997

Filed:

Oct 28, 1992

Appl. No.:

7/967517

Inventors:

Joseph C. Peters - Quincy MA
Lionel C. Allmand - Baton Rouge LA

Assignee:

Deltech Corporation - Whippany NJ

International Classification:

C07C 264
C07C 1546

US Classification:

585444

Abstract:

This invention relates to a vapor phase process for the production of an alkyl styrene by the catalytic dehydrogenation of tertiary butylethylbenzene in the presence of catalysts containing iron oxides under conditions which minimize the undesirable thermal degradation of the raw material and the product while maintaining good yield and selectivity with low production of by-products. Specifically, it has been discovered that these desired results may be obtained by conducting the subject reaction at relatively low temperatures of between about 1000. degree. F. and about 1100. degree. F. and by maintaining a low partial pressure (i. e. , not greater than about 0. 5 psi) of the alkyl ethylbenzene in the reaction mixture. The desired partial pressure of the alkyl ethylbenzene is obtained by carrying out the catalytic reaction at a pressure of between about 1 psia and about 30 psia with steam as a diluent, the weight ratio of steam to alkyl ethylbenzene being between about 3 and about 30.