Patents by Inventor Paul F. Keusenkothen

Paul F. Keusenkothen 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).

  • Patent number: 7425258
    Abstract: The present invention relates to a process for selectively producing C3 olefins from a catalytically cracked or thermally cracked naphtha stream. The process is practiced by recycling a C6 rich fraction of the catalytic naphtha product to the riser upstream the feed injection point, to a parallel riser, to the spent catalyst stripper, and/or to the reactor dilute phase immediately above the stripper.
    Type: Grant
    Filed: January 20, 2004
    Date of Patent: September 16, 2008
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Tan Jen Chen, Brian Erik Henry, Paul F Keusenkothen, Philip A. Ruziska
  • Publication number: 20080210598
    Abstract: The invention relates to a process for upgrading tar using a heat exchanger in series with a vapor/liquid separator to separate tar into a heavy tar asphaltenic material and a deasphalted tar material.
    Type: Application
    Filed: January 31, 2008
    Publication date: September 4, 2008
    Inventors: Subramanian Annamalai, Paul F. Keusenkothen, Alok Srivastava, James N. McCoy
  • Publication number: 20080179218
    Abstract: A process for steam cracking liquid hydrocarbon feedstocks containing synthetic crude oil comprises i) hydroprocessing a wide boiling range aliquot containing a) normally liquid hydrocarbon portion substantially free of resids and b) thermally cracked hydrocarbon liquid, boiling in a range from about 600° to about 1050° F., to provide a synthetic crude oil substantially free of resids; ii) adding to the synthetic crude oil a normally liquid hydrocarbon component boiling in a range from about 100° to about 1050° F.; and iii) cracking the mixture resulting from ii) in a cracker furnace comprising a radiant coil outlet to provide a cracked effluent, wherein the cracking is carried out under conditions sufficient to effect a radiant coil outlet temperature which is greater than the optimum radiant coil outlet temperature for cracking the synthetic crude oil separately. A method for upgrading synthetic crude for use in cracking is also provided, as well as a feedstock for cracking.
    Type: Application
    Filed: January 26, 2007
    Publication date: July 31, 2008
    Inventors: Paul F. Keusenkothen, James N. Mccoy, James Earl Graham, Chad David Reimann
  • Publication number: 20080116109
    Abstract: In the invention, tar is upgraded by deasphalting and then hydrocracking to produce valuable products such as low sulfur diesel fuel and mogas. The invention is also directed to a system integrating a pyrolysis furnace operation with refinery operations.
    Type: Application
    Filed: July 25, 2007
    Publication date: May 22, 2008
    Inventors: James N. McCoy, Paul F. Keusenkothen
  • Publication number: 20080099371
    Abstract: A feedstream comprising tar is feed to a solvent deasphalter wherein it is contacted with a deasphalting solvent or fluid to produce a composition comprising a mixture or slurry of solvent containing a soluble portion of the tar, and a heavy tar fraction comprising the insoluble portion of the tar. These fractions may be separated in the deasphalter apparatus, such as by gravity settling wherein the heavy tar fraction is taken off as bottoms, and the solvent-soluble fraction taken as overflow or overheads with the solvent. The overflow or overheads is sent to a solvent recovery unit, such as a distillation apparatus, wherein solvent is recovered as overheads and a deasphalted tar fraction is taken off as a sidestream or bottoms. The solvent or a portion thereof, recovered as overheads, may be then be recycled to the solvent deasphalter, or in a preferred embodiment, at least a portion of the solvent is steam cracked to produce a product comprising light olefins.
    Type: Application
    Filed: October 30, 2006
    Publication date: May 1, 2008
    Inventors: James N. McCoy, Paul F. Keusenkothen, Alok Srivastava
  • Publication number: 20080099372
    Abstract: Tar is contacted with stripping agent, such as steam or tail gas, in a stripping tower. A product comprising deasphalted tar is recovered as overheads and a product comprising heavy tar is recovered as bottoms from the stripping tower.
    Type: Application
    Filed: October 30, 2006
    Publication date: May 1, 2008
    Inventors: Subramanian Annamalai, James N. McCoy, Paul F. Keusenkothen
  • Publication number: 20080051615
    Abstract: A hydrocarbon conversion process for producing an aromatics product containing of benzene, toluene, xylenes, or mixtures thereof. The process is carried out by converting precursors of benzene, toluene, and xylenes that are contained in a hydrocarbon feed (C6+ non-aromatic cyclic hydrocarbons, A8+ single-ring aromatic hydrocarbons having at least one alkyl group containing two or more carbon atoms; and A9+ single-ring aromatic hydrocarbons having at least three methyl groups) to produce a product that contains an increased amount of benzene, toluene, xylenes, or combinations thereof compared to said hydrocarbon feed.
    Type: Application
    Filed: August 24, 2006
    Publication date: February 28, 2008
    Inventors: Elizabeth L. Stavens, Stephen H. Brown, J. Scott Buchanan, Yun-feng Chang, Larry L. Iaccino, Paul F. Keusenkothen, John D. Y. Ou, Randall D. Partridge
  • Patent number: 7326332
    Abstract: A multi component catalyst and catalytic cracking process for selectively producing C3 olefins. The catalyst comprises a first molecular sieve having an intermediate pore size, a second molecular sieve and, optionally a third molecular sieve having a large pore size. At least one of the channels of the second molecular sieve has a pore size index that is less than the pore size index of at least one channel of the first molecular sieve. The process is carried out by contacting a feedstock containing hydrocarbons having at least 5 carbon atoms is contacted, under catalytic cracking conditions, with the multi component catalyst. The catalyst finds application in the cracking of naphtha and heavy hydrocarbon feedstocks.
    Type: Grant
    Filed: September 25, 2003
    Date of Patent: February 5, 2008
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Tan-Jen Chen, John Scott Buchanan, Brian Erik Henry, Paul F. Keusenkothen, Philip A. Ruziska, David L. Stern
  • Patent number: 7285697
    Abstract: A process for cracking hydrocarbon feedstock comprising at least one sulfur-containing compound comprising: heating the feedstock and a peroxide-containing compound, mixing the heated feedstock and peroxide-containing compound with a fluid and/or a primary dilution steam stream to form a mixture, flashing the mixture to form a vapor phase and a liquid phase which collect as bottoms and removing the liquid phase, separating and cracking the vapor phase, and cooling the product effluent, wherein the oxidized sulfur-containing species are removed as bottoms
    Type: Grant
    Filed: July 16, 2004
    Date of Patent: October 23, 2007
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventor: Paul F. Keusenkothen
  • Patent number: 7270739
    Abstract: The present invention relates to a process for selectively producing C3 olefins from a catalytically cracked or thermally cracked naphtha stream by fractionating the naphtha feed to obtain at least a C6 rich fraction and feeding the C6 rich fraction into a reaction stage at a point wherein the residence time of the C6 rich fraction is minimized.
    Type: Grant
    Filed: January 20, 2004
    Date of Patent: September 18, 2007
    Assignee: Exxonmobil Research and Engineering Company
    Inventors: Tan Jen Chen, Brian Erik Henry, Paul F Keusenkothen, Philip A. Ruziska
  • Patent number: 7267759
    Abstract: The present invention relates to a process for selectively producing C3 olefins from a catalytically cracked or thermally cracked naphtha stream by fractionating the naphtha feed to obtain a C6 fraction and feeding the C6 fraction either in the riser downstream of the injection point for the reminder of the naphtha feed, in the stripper, and/or in the dilute phase immediately downstream or above the stripper of a process unit.
    Type: Grant
    Filed: January 20, 2004
    Date of Patent: September 11, 2007
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Tan Jen Chen, Brian Erik Henry, Paul F Keusenkothen, Philip A. Ruziska
  • Patent number: 7220887
    Abstract: A process for cracking hydrocarbon feedstock containing resid comprising: heating the feedstock, mixing the heated feedstock with a fluid and/or a primary dilution steam stream to form a mixture, flashing the mixture to form a vapor phase and a liquid phase which collect as bottoms and removing the liquid phase, separating and cracking the vapor phase, and cooling the product effluent, wherein the bottoms are maintained under conditions to effect at least partial visbreaking. The visbroken bottoms may be steam stripped to recover the visbroken molecules while avoiding entrainment of the bottoms liquid. An apparatus for carrying out the process is also provided.
    Type: Grant
    Filed: May 21, 2004
    Date of Patent: May 22, 2007
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Richard C. Stell, George J. Balinsky, James N. McCoy, Paul F. Keusenkothen
  • Patent number: 7193123
    Abstract: A process for cracking hydrocarbon feedstock containing resid comprising: heating the feedstock, mixing the heated feedstock with a fluid and/or a primary dilution steam stream to form a mixture, flashing the mixture to form a vapor phase and a liquid phase which collect as bottoms and removing the liquid phase, separating and cracking the vapor phase, and cooling the product effluent.
    Type: Grant
    Filed: May 20, 2005
    Date of Patent: March 20, 2007
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Richard C. Stell, Jennifer L. Bancroft, Arthur R. DiNicolantonio, Subramanian Annamalai, James N. McCoy, Paul F. Keusenkothen, George Stephens, John R. Messinger, James Mitchell Frye, Nick G. Vidonic, George J. Balinsky
  • Publication number: 20040182747
    Abstract: The present invention relates to a process for selectively producing C3 olefins from a catalytically cracked or thermally cracked naphtha stream. The process is practiced by recycling a C6 rich fraction of the catalytic naphtha product to the riser upstream the feed injection point, to a parallel riser, to the spent catalyst stripper, and/or to the reactor dilute phase immediately above the stripper.
    Type: Application
    Filed: January 20, 2004
    Publication date: September 23, 2004
    Inventors: Tan Jen Chen, Brian Erik Henry, Paul F. Keusenkothen, Philip A. Ruziska
  • Publication number: 20040182746
    Abstract: The present invention relates to a process for selectively producing C3 olefins from a catalytically cracked or thermally cracked naphtha stream by fractionating the naphtha feed to obtain a C6 fraction and feeding the C6 fraction either in the riser downstream of the injection point for the reminder of the naphtha feed, in the stripper, and/or in the dilute phase immediately downstream or above the stripper of a process unit.
    Type: Application
    Filed: January 20, 2004
    Publication date: September 23, 2004
    Inventors: Tan Jen Chen, Brian Erik Henry, Paul F. Keusenkothen, Philip A. Ruziska
  • Publication number: 20040182745
    Abstract: The present invention relates to a process for selectively producing C3 olefins from a catalytically cracked or thermally cracked naphtha stream by fractionating the naphtha feed to obtain at least a C6 rich fraction and feeding the C6 rich fraction into a reaction stage at a point wherein the residence time of the C6 rich fraction is minimized.
    Type: Application
    Filed: January 20, 2004
    Publication date: September 23, 2004
    Inventors: Tan Jen Chen, Brian Erik Henry, Paul F. Keusenkothen, Philip A. Ruziska
  • Publication number: 20030173254
    Abstract: A catalytic cracking process is disclosed for feedstock containing hydrocarbons having at least 5 carbon atoms. The feedstock is contacted, under catalytic cracking conditions, with a 9-member ring catalyst composition and, optionally, a large pore molecular sieve, such as zeolite Y.
    Type: Application
    Filed: November 4, 2002
    Publication date: September 18, 2003
    Inventors: Ten-Jen Chen, Paul F. Keusenkothen, John Scott Buchanan, Kirk D. Schmitt