Patents by Inventor Mark A. Greaney
Mark A. Greaney has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10865487Abstract: An electrochemical conversion method for converting at least a portion of a first mixture comprising hydrocarbon to C2+ unsaturates by repeatedly applying an electric potential difference, V(?1), to a first electrode of an electrochemical cell during a first time interval ?1; and reducing the electric potential difference, V(?1), to a second electric potential difference, V(?2), for a second time interval ?2, wherein ?2??1. The method is beneficial, among other things, for reducing coke formation in the electrochemical production of C2+ unsaturates in an electrochemical cell. Accordingly, a method of reducing coke formation in the electrochemical conversion of such mixtures and a method for electrochemically converting carbon to C2+ unsaturates as well as an apparatus for such methods are also provided.Type: GrantFiled: March 2, 2018Date of Patent: December 15, 2020Assignee: ExxonMobil Chemical Patents Inc.Inventors: Walter Weissman, Sumathy Raman, Mark A. Greaney
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Publication number: 20190078218Abstract: An electrochemical conversion method for converting at least a portion of a first mixture comprising hydrocarbon to C2+ unsaturates by repeatedly applying an electric potential difference, V(?1), to a first electrode of an electrochemical cell during a first time interval ?1; and reducing the electric potential difference, V(?1), to a second electric potential difference, V(?2), for a second time interval ?2, wherein ?2??1. The method is beneficial, among other things, for reducing coke formation in the electrochemical production of C2+ unsaturates in an electrochemical cell. Accordingly, a method of reducing coke formation in the electrochemical conversion of such mixtures and a method for electrochemically converting carbon to C2+ unsaturates as well as an apparatus for such methods are also provided.Type: ApplicationFiled: March 2, 2018Publication date: March 14, 2019Inventors: Walter Weissman, Sumathy Raman, Mark A. Greaney
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Patent number: 9932679Abstract: An electrochemical conversion method for converting at least a portion of a first mixture comprising hydrocarbon to C2+ unsaturates by repeatedly applying an electric potential difference, V(?1), to a first electrode of an electrochemical cell during a first time interval ?1; and reducing the electric potential difference, V(?1), to a second electric potential difference, V(?2), for a second time interval ?2, wherein ?2??1. The method is beneficial, among other things, for reducing coke formation in the electrochemical production of C2+ unsaturates in an electrochemical cell. Accordingly, a method of reducing coke formation in the electrochemical conversion of such mixtures and a method for electrochemically converting carbon to C2+ unsaturates as well as an apparatus for such methods are also provided.Type: GrantFiled: October 17, 2014Date of Patent: April 3, 2018Assignee: ExxonMobil Chemical Patents Inc.Inventors: Walter Weissman, Sumathy Raman, Mark A. Greaney
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Publication number: 20150119542Abstract: An electrochemical conversion method for converting at least a portion of a first mixture comprising hydrocarbon to C2+ unsaturates by repeatedly applying an electric potential difference, V(?1), to a first electrode of an electrochemical cell during a first time interval ?1; and reducing the electric potential difference, V(?1), to a second electric potential difference, V(?2), for a second time interval ?2, wherein ?2??1. The method is beneficial, among other things, for reducing coke formation in the electrochemical production of C2+ unsaturates in an electrochemical cell. Accordingly, a method of reducing coke formation in the electrochemical conversion of such mixtures and a method for electrochemically converting carbon to C2+ unsaturates as well as an apparatus for such methods are also provided.Type: ApplicationFiled: October 17, 2014Publication date: April 30, 2015Inventors: Walter Weissman, Sumathy Raman, Mark A. Greaney
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Patent number: 8877058Abstract: This invention provides a process for separating solute material from an algal cell feed stream. The algal cell feed stream, which contains the solute material, can be introduced into on portion of a mixer-settler vessel, and a solvent feed stream can be introduced into another portion of the vessel to mix with the algal cell feed stream, with a goal of separating at least a portion of the solute material from the algal feed stream.Type: GrantFiled: October 31, 2011Date of Patent: November 4, 2014Assignee: Exxonmobil Research and Engineering CompanyInventors: Mark A. Greaney, James R. Bielenberg, Paul D. Oldenburg
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Publication number: 20140246013Abstract: Fired heater tubes with improved resistance to corrosion and fouling suitable for use in thermal processing units of petroleum refineries and petrochemical plants are fabricated from a bulk alloy of an alumina-forming alloy which is capable of forming a stable oxide film on the surfaces of the tubes. The bulk alloy comprising about 3 wt. % to about 20 wt. % of Al, about 5 wt. % to about 30 wt. % Cr and at least one alloying component selected from Fe, Ni, Co, Si, Mn, B, C, N, P, Ga, Ge, As, In, Sn, Sb, Pb, Sc, La, Y, Ce, Ti, Zr, Hf, V, Nb, Ta, Mo, W, Re, Ru, Rh, Ir, Pd, Pt, Cu, Ag, Au and mixtures of these components.Type: ApplicationFiled: May 15, 2014Publication date: September 4, 2014Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANYInventors: ChangMin Chun, David Samuel Deutsch, Mark A. Greaney, James E. Feather
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Patent number: 8748008Abstract: A fired heater tube that is resistant to corrosion and fouling is disclosed. The fired heater tube comprises an advantageous high performance coated material composition resistant to corrosion and fouling comprises: (PQR), wherein P is an oxide layer at the surface of (PQR), Q is a coating metal layer interposed between P and R, and R is a base metal layer, wherein P is substantially comprised of alumina, chromia, silica, mullite, spinels, and mixtures thereof, Q comprises Cr, and at least one element selected from the group consisting of Ni, Al, Si, Mn, Fe, Co, B, C, N, P, Ga, Ge, As, In, Sn, Sb, Pb, Sc, La, Y, Ce, Ti, Zr, Hf, V, Nb, Ta, Mo, W, Re, Ru, Rh, Ir, Pd, Pt, Cu, Ag, Au and mixtures thereof, and R is selected from the group consisting of low chromium steels, ferritic stainless steels, austenetic stainless steels, duplex stainless steels, Inconel alloys, Incoloy alloys, Fe—Ni based alloys, Ni-based alloys and Co-based alloys.Type: GrantFiled: June 8, 2009Date of Patent: June 10, 2014Assignee: ExxonMobil Research and Engineering CompanyInventors: ChangMin Chun, Mark A Greaney, Ian A Cody, F. Pierce Hubbard, Jr., David Samuel Deutsch
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Patent number: 8557101Abstract: This invention relates to a process for electrochemical conversion of dibenzothiophene type molecules of petroleum feedstreams selectively to mercaptan compounds that can then be more easily removed from the electrochemically treated product stream by either caustic extraction or thermal decomposition of the thiol functionality to hydrogen sulfide. The conversion of dibenzothiophenes to mercaptans is performed by electrochemical means in the substantial absence of hydrogen and in the substantial absence of water.Type: GrantFiled: September 14, 2011Date of Patent: October 15, 2013Assignee: ExxonMobil Research and Engineering CompanyInventors: Mark A. Greaney, Kun Wang, Frank C. Wang
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Patent number: 8469081Abstract: A method and device for reducing sulfidation corrosion and depositional fouling in heat transfer components within a refining or petrochemical facility is disclosed. The heat transfer components are formed from a corrosion and fouling resistant steel composition containing a Cr-enriched layer having a surface roughness of less than 40 micro inches (1.1 ?m) and a protective layer formed thereon.Type: GrantFiled: May 15, 2012Date of Patent: June 25, 2013Assignee: ExxonMobil Research and Engineering CompanyInventors: Mark A Greaney, Thomas Bruno, Ashley E. Cooper, Ian A Cody, ChangMin Chun
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Patent number: 8470097Abstract: A method of providing sulfidation corrosion resistance and corrosion induced fouling resistance to a heat transfer component surface includes providing a silicon containing steel composition including an alloy and a Si-partitioned non-metallic film formed on a surface of the alloy. The alloy is formed from the composition ?, ?,and ?, in which ? is a metal selected from the group consisting of Fe, Ni, Co, and mixtures thereof, ? is Si, and ? is at least one alloying element selected from the group consisting of Cr, Al, Mn, Ti, Zr, Hf, V, Nb, Ta, Mo, W, Sc, La, Y, Ce, Ru, Rh, Ir, Pd, Pt, Cu, Ag, Au, Ga, Ge, As, In, Sn, Sb, Pb, B, C, N, P, O, S and mixtures thereof. The Si-partitioned non-metallic film comprises at least one of sulfide, oxysulfide and mixtures thereof.Type: GrantFiled: May 15, 2012Date of Patent: June 25, 2013Assignee: ExxonMobil Research and Engineering CompanyInventors: ChangMin Chun, Mark A Greaney, Thomas Bruno, Ian A Cody, Trikur A Ramanarayanan, LeRoy A Clavenna
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Patent number: 8465599Abstract: A method of providing sulfidation corrosion resistance and corrosion induced fouling resistance for a heat transfer component is disclosed. The heat transfer component includes a heat exchange surface formed from a chromium-enriched oxide containing material formed from the composition ?, ?, and ?, wherein ? is a steel containing at least about 5 to about 40 wt. % chromium, ? is a chromium enriched oxide (M3O4 or M2O3 or mixtures thereof) formed on the surface of the steel ?, wherein M is a metal containing at least 5 wt. % Cr based on the total weight of the metal M, and ? is a top layer formed on the surface of the chromium-enriched oxide ?, comprising sulfide, oxide, oxysulfide, and mixtures thereof. The top layer ? comprises iron sulfide (Fe1-xS), iron oxide (Fe3O4), iron oxysulfide, iron-chromium sulfide, iron-chromium oxide, iron-chromium oxysulfide, and mixtures thereof.Type: GrantFiled: July 28, 2011Date of Patent: June 18, 2013Assignee: ExxonMobil Research and Engineering CompanyInventors: ChangMin Chun, Mark A. Greaney, Thomas Bruno, Ian A. Cody, Trikur A. Ramanarayanan
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Patent number: 8404106Abstract: After desulfurizing a hydrocarbon feedstream using an alkali metal reagent, the hydrocarbon feedstream can include particles of spent alkali metal salts. The spent alkali metal salts can be separated from the hydrocarbon feedstream and regenerated to form an alkali metal reagent, such as a alkali hydroxide or alkali sulfide. The regeneration process can pass through an intermediate stage of forming an alkali carbonate by successive reactions with carbon dioxide and calcium oxide. The calcium oxide can also be regenerated.Type: GrantFiled: December 14, 2010Date of Patent: March 26, 2013Assignee: ExxonMobil Research and Engineering CompanyInventors: Jorge L. Soto, Daniel P. Leta, Lu Han, Walter D. Vann, Mark A. Greaney, James R. Bielenberg, Paul D. Oldenburg, Jonathan M. McConnachie, Leo D. Brown, William C. Baird, Jr., Roby Bearden, Jr.
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Patent number: 8349267Abstract: Targeted application of anti-fouling mechanisms in a heat exchange system produces higher rates of energy recovery. The anti-fouling mechanisms with high mitigation rates can be deployed at only the hottest portions of a pre-heat train that experience the highest rates of fouling and heat loss. In application, bundles of corrosion resistant smoothed tubes are deployed in the late pre-heat train to significantly reduce the formation of harder deposits. Vibration can be used as an adjunct approach in conjunction with the corrosion resistant, smooth tubes, or deployed alone on existing bundles. The use of high performing, more durable exchangers in select locations justifies the increased cost of these components.Type: GrantFiled: September 26, 2008Date of Patent: January 8, 2013Assignee: ExxonMobil Research and Engineering CompanyInventors: Ian A Cody, Amar S. Wanni, Robert C. Welch, James E. Feather, Mark A. Greaney, Limin Song, Jasmina Poturovic
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Publication number: 20120273091Abstract: A method of providing sulfidation corrosion resistance and corrosion induced fouling resistance to a heat transfer component surface includes providing a silicon containing steel composition including an alloy and a Si-partitioned non-metallic film formed on a surface of the alloy. The alloy is formed from the composition ?, ?, and t, in which ? is a metal selected from the group consisting of Fe, Ni, Co, and mixtures thereof, ? is Si, and t is at least one alloying element selected from the group consisting of Cr, Al, Mn, Ti, Zr, Hf, V, Nb, Ta, Mo, W, Sc, La, Y, Ce, Ru, Rh, Ir, Pd, Pt, Cu, Ag, Au, Ga, Ge, As, In, Sn, Sb, Pb, B, C, N, P, O, S and mixtures thereof. The Si-partitioned non-metallic film comprises at least one of sulfide, oxysulfide and mixtures thereof.Type: ApplicationFiled: May 15, 2012Publication date: November 1, 2012Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANYInventors: ChangMin Chun, Mark A. Greaney, Thomas Bruno, Ian A. Cody, Trikur A. Ramanarayanan, LeRoy R. Clavenna
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Patent number: 8286695Abstract: An insert for reducing sulfidation corrosion and depositional fouling is disclosed. The insert is formed from a corrosion and fouling resistant steel composition containing a Cr-enriched layer and having a surface roughness of less than 40 micro inches (1.1 ?m).Type: GrantFiled: December 20, 2006Date of Patent: October 16, 2012Assignee: ExxonMobil Research & Engineering CompanyInventors: Mark A. Greaney, James E. Feather, Thomas Bruno, ChangMin Chun, Clifford Hay
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Patent number: 8211548Abstract: A heat transfer component that is resistant to both corrosion and fouling is disclosed having a heat exchange surface formed from a silicon containing steel composition including an alloy and a non-metallic film formed on a surface of the alloy. The alloy is formed from the composition ?, ?, and ?, in which ? is a metal selected from the group consisting of Fe, Ni, Co, and mixtures thereof, ? is Si, and ? is at least one alloying element selected from the group consisting of Cr, Al, Mn, Ti, Zr, Hf, V, Nb, Ta, Mo, W, Sc, La, Y, Ce, Ru, Rh, Ir, Pd, Pt, Cu, Ag, Au, Ga, Ge, As, In, Sn, Sb, Pb, B, C, N, P, O, S and mixtures thereof. The non-metallic film comprises sulfide, oxide, carbide, nitride, oxysulfide, oxycarbide, oxynitride and mixtures thereof. The surface roughness of the heat transfer component is less than 40 micro inches.Type: GrantFiled: December 20, 2006Date of Patent: July 3, 2012Assignee: ExxonMobil Research & Engineering Co.Inventors: ChangMin Chun, Mark A. Greaney, Thomas Bruno, Ian A. Cody, Trikur A. Ramanarayanan, LeRoy R. Clavenna
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Patent number: 8201619Abstract: A method and device for reducing sulfidation corrosion and depositional fouling in heat transfer components within a refining or petrochemical facility is disclosed. The heat transfer components are formed from a corrosion and fouling resistant steel composition containing a Cr-enriched layer and having a surface roughness of less than 40 micro inches (1.1 ?m).Type: GrantFiled: December 20, 2006Date of Patent: June 19, 2012Assignee: ExxonMobil Research & Engineering CompanyInventors: Mark A. Greaney, Thomas Bruno, Ashley E. Cooper, Ian A. Cody, ChangMin Chun
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Patent number: 8177963Abstract: This invention relates to the partial hydrogenation of sulfur containing petroleum feedstreams by electrochemical means. The partially hydrogenated feedstream is then conducted to processes for either conversion and removal of at least some of the sulfur-containing species from the electrochemical desulfurization process or adsorption and removal of at least some of the sulfur-containing species from the electrochemical desulfurization process.Type: GrantFiled: October 21, 2008Date of Patent: May 15, 2012Assignee: ExxonMobil Research and Engineering CompanyInventors: Mark A. Greaney, Kun Wang, Frank C. Wang
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Publication number: 20120065415Abstract: This invention provides a process for separating solute material from an algal cell feed stream. The algal cell feed stream, which contains the solute material, can be introduced into on portion of a mixer-settler vessel, and a solvent feed stream can be introduced into another portion of the vessel to mix with the algal cell feed stream, with a goal of separating at least a portion of the solute material from the algal feed stream.Type: ApplicationFiled: October 31, 2011Publication date: March 15, 2012Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANYInventors: Mark A. Greaney, James R. Bielenberg, Paul D. Oldenburg
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Publication number: 20120000792Abstract: This invention relates to a process for electrochemical conversion of dibenzothiophene type molecules of petroleum feedstreams selectively to mercaptan compounds that can then be more easily removed from the electrochemically treated product stream by either caustic extraction or thermal decomposition of the thiol functionality to hydrogen sulfide. The conversion of dibenzothiophenes to mercaptans is performed by electrochemical means in the substantial absence of hydrogen and in the substantial absence of water.Type: ApplicationFiled: September 14, 2011Publication date: January 5, 2012Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANYInventors: Mark A. Greaney, Kun Wang, Frank C. Wang