Howard Steven Lacheen from 31 Idaho St, Richmond, CA 94801, age 48

Resumes

Senior Research Engineer

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Location:

31 Idaho St, Richmond, CA 94801

Industry:

Oil & Energy

Work:

Chevron
Senior Research Engineer
Chevron Apr 2008 - Mar 2011
Lead Research Engineer
Chevron Oct 2005 - Mar 2008
Research Engineer

Education:

University of California, Berkeley 2000 - 2005
Doctorates, Doctor of Philosophy, Chemical Engineering Georgia Institute of Technology 1995 - 2000

Skills:

Catalysis
Heterogeneous Catalysis
Chemical Engineering
Spectroscopy
Characterization
Kinetics

Howard Lacheen

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Us Patents

Production Of Low Sulphur Alkylate Gasoline Fuel
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US Patent:

7988747, Aug 2, 2011
Filed:

Oct 31, 2007
Appl. No.:

11/932533
Inventors:

Howard Lacheen - Richmond CA, US
Hye-Kyung C. Timken - Albany CA, US
Assignee:

Chevron U.S.A. Inc. - San Ramon CA
International Classification:

C10L 1/24
US Classification:

44304, 208238, 502237, 585709, 585721
Abstract:

A method for producing a low sulphur containing fuel from a hydrocarbon feed having from 10 to 80 ppm of sulphur is disclosed. The method comprises contacting a hydrocarbon stream comprising at least one olefin having from 2 to 6 carbon atoms and at least one paraffin having from 4 to 6 carbon atoms with an ionic liquid catalyst and a halide containing additive in an alkylation reaction zone under alkylating conditions to produce a fuel having sulphur content up to 10 ppm.

Process For Measuring And Adjusting Halide In A Reactor
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US Patent:

8070939, Dec 6, 2011
Filed:

Sep 18, 2008
Appl. No.:

12/233481
Inventors:

Sven Ivar Hommeltoft - Pleasant Hill CA, US
Howard S. Lacheen - Richmond CA, US
Assignee:

Chevron U.S.A. Inc. - San Ramon CA
International Classification:

C10G 47/24
US Classification:

208133, 585712, 585721, 585727, 585728, 585729, 585741, 585742, 585743, 585744, 585745, 585746
Abstract:

A process comprising: a) taking a sample from a continuous reactor process, b)measuring a content of a halide in the sample, and c) in response to the measured content of the halide, adjusting a flow of a halide containing additive comprising the halide to control the process. Also, an apparatus comprising: a) a reactor holding an ionic liquid catalyst and a reactant mixture, b) a means for measuring levels of a halide in an effluent from the reactor, and c) a control system that receives a signal in response to the measuring and communicates changes in an operating condition that influences the yield of a product in the reactant mixture.

Reduction Of Organic Halide Contamination In Hydrocarbon Products
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US Patent:

8105481, Jan 31, 2012
Filed:

Dec 19, 2007
Appl. No.:

11/960506
Inventors:

Michael S. Driver - San Francisco CA, US
Howard S. Lacheen - Richmond CA, US
Mitra A. Hosseini - Dublin CA, US
Assignee:

Chevron U.S.A. Inc. - San Ramon CA
International Classification:

C10G 25/05
US Classification:

2082621, 585820, 95101, 95102
Abstract:

A method for reducing halide concentration in a hydrocarbon product having an organic halide content from 50 to 4000 ppm which is made by a hydrocarbon conversion process using an ionic liquid catalyst comprising a halogen-containing acidic ionic liquid comprising contacting at least a portion of the hydrocarbon product with at least one molecular sieve having pore size from 4 to 16 Angstrom under organic halide absorption conditions to reduce the halogen concentration in the hydrocarbon product to less than 40 ppm is disclosed.

Apparatus For Producing Alkylate Gasoline And Middle Distillate
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US Patent:

8142725, Mar 27, 2012
Filed:

Jul 8, 2011
Appl. No.:

13/178729
Inventors:

Sven Ivar Hommeltoft - Pleasant Hill CA, US
Howard S. Lacheen - Richmond CA, US
Assignee:

Chevron U.S.A. Inc. - San Ramon CA
International Classification:

G05B 99/00
US Classification:

422105, 208133, 585709, 585712, 585727, 585729, 585741, 585742, 585743, 585744, 585745, 585746, 585747, 422106, 422107
Abstract:

An apparatus comprising: a) an alkylation reactor holding an ionic liquid catalyst and a reactant mixture, b) a means for measuring levels of a halide in an effluent from the alkylation reactor, and c) a control system that receives a signal in response to the measuring and communicates changes in an operating condition that influences the yield of products from the reactant mixture. The control system is responsive to deviations outside a predetermined range of halide level that has been selected to obtain a ratio of a yield of an alkylate gasoline and a yield of a middle distillate from 0. 31 to 4. 0 in the product from the alkylation reactor.

Process For Measuring And Adjusting Halide In An Alkylation Reactor
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US Patent:

8323478, Dec 4, 2012
Filed:

Jul 21, 2011
Appl. No.:

13/187656
Inventors:

Sven Ivar Hommeltoft - Pleasant Hill CA, US
Howard S. Lacheen - Richmond CA, US
Assignee:

Chevron U.S.A. Inc. - San Ramon CA
International Classification:

C07C 2/58
US Classification:

208133, 585712, 585721, 585727, 585728, 585729, 585741, 585742, 585743, 585744, 585745, 585746
Abstract:

A process, comprising:.

Flexible Production Of Alkylate Gasoline And Distillate
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US Patent:

8455708, Jun 4, 2013
Filed:

Mar 17, 2010
Appl. No.:

12/725969
Inventors:

Hye-Kyung Timken - Albany CA, US
Shawn Winter - Salt Lake City UT, US
Howard S. Lacheen - Richmond CA, US
Sven Ivar Hommeltoft - Pleasant Hill CA, US
Assignee:

Chevron U.S.A. Inc. - San Ramon CA
International Classification:

C10G 57/00
US Classification:

585709, 585708, 585700, 585302, 585500, 585643, 585712, 585727, 585710, 208133, 208 66
Abstract:

A process for producing hydrocarbon products, comprising: a) operating a process unit in an alkylate mode wherein greater than 50 wt % of a C hydrocarbon stream from the process unit boils at 137. 8 C. or below, b) adjusting one or more process conditions in the process unit, and c) after the adjusting step, operating the process unit in a distillate mode wherein greater than 50 wt % of the C hydrocarbon stream from the process unit boils above 137. 8 C. Also, a process unit, comprising: a) an alkylation reactor; and b) a control system that enables the alkylation reactor to be operated in the alkylate mode and in the distillate mode; wherein the alkylation reactor can switch back and forth from operating in the alkylate mode to the distillate mode.

Market Driven Alkylation Or Oligomerization Process
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US Patent:

8487154, Jul 16, 2013
Filed:

Mar 17, 2010
Appl. No.:

12/726009
Inventors:

Hye-Kyung Timken - Albany CA, US
Shawn Winter - Salt Lake City UT, US
Howard S. Lacheen - Richmond CA, US
Sven Ivar Hommeltoft - Pleasant Hill CA, US
Assignee:

Chevron U.S.A. Inc. - San Ramon CA
International Classification:

C10G 57/00
US Classification:

585709, 585708, 585700, 585302, 585500, 585643, 585712, 585727, 585710
Abstract:

A process comprising adjusting a level of conjunct polymers in an ionic liquid catalyst between a low level that favors production of C+ products boiling at 137. 8 C. or below and a higher level that favors production of both C+ products boiling at 137. 8 C. or below and C+ products boiling above 137. 8 C. ; wherein the adjusting is done in response to market demand. A process unit, comprising a reactor that operates with an ionic liquid catalyst comprising a low level or a higher level of conjunct polymers, and the alkylation reactor is switched between operating with the low and the higher levels in response to market demand. A process unit, comprising a reactor that operates in an alkylate mode and a distillate mode, and a catalyst regenerator that operates with varying severity to adjust the level of conjunct polymers in response to demand for gasoline or distillate.

Removal Of Excess Metal Halides From Regenerated Ionic Liquid Catalysts
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US Patent:

20090163349, Jun 25, 2009
Filed:

Dec 19, 2007
Appl. No.:

11/960319
Inventors:

Saleh Elomari - Fairfield CA, US
Hye-Kyung C. Timken - Albany CA, US
Howard S. Lacheen - Richmond CA, US
Thomas V. Harris - Benicia CA, US
Robert W. Campbell - Danville CA, US
International Classification:

B01J 20/34
US Classification:

502 26
Abstract:

A process for removing metal halides from regenerated ionic liquid catalyst comprising interacting a regenerated ammonium-based metal-halide ionic liquid catalyst or an ammonium-based metal-halide ionic liquid catalyst undergoing regeneration with either the parent ammonium halide salt from which the ionic liquid catalyst was made or a corresponding mixed salt having an ammonium halide to metal halide molar ratio of 0 to less than 2.0 is disclosed.