Patents by Inventor Scott A. Stevenson

Scott A. Stevenson 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).

  • Publication number: 20190055482
    Abstract: An integrated process for increasing olefin production is described through which heavy cracker residues of fluid catalytic cracking unit and steam cracking unit are completely mixed, and mixed stream is properly recycled and further combined with atmospheric tower bottoms. Combined stream is deasphalted and hydrotreated to produce a proper feedstock for steam cracking unit for manufacturing light olefin compounds. The integrated process produces higher amount of light olefins than a substantially similar process without processing the heavy cracker residues.
    Type: Application
    Filed: January 31, 2017
    Publication date: February 21, 2019
    Inventors: Jose Armando SALAZAR-GUILLEN, Michael HUCKMAN, Scott STEVENSON
  • Patent number: 10207255
    Abstract: In an embodiment, a method for making a catalyst, comprises: forming a mixture comprising a germanium source, an alkali metal source, an aluminum source, and a silica source, wherein the mixture has a pH; adjusting the pH of the mixture to a value of greater than or equal to 9.5; crystallizing and calcining the mixture to form a zeolite; depositing platinum on the zeolite; and calcining the zeolite to form the final catalyst. The final catalyst is non-acidic and has an aluminum content of less than or equal to 0.75 wt % based on the total weight of the final catalyst excluding any binder and extrusion aide and a Si:Al2 mole ratio of greater than or equal to 125.
    Type: Grant
    Filed: November 6, 2014
    Date of Patent: February 19, 2019
    Assignee: SAUDI BASIC INDUSTRIES CORPORATION
    Inventors: Alla Khanmamedova, Scott Stevenson
  • Publication number: 20180353944
    Abstract: The invention relates to a process for preparing a hydrocracking catalyst, comprising (i) contacting a shaped body comprising a zeolite and a binder with an aqueous solution of a hydrogenation metal compound which is a complex or a salt of a hydrogenation metal to deposit the hydrogenation metal onto the shaped body, wherein the aqueous solution comprises an ammonium salt and (ii) calcining the shaped body obtained by step (i).
    Type: Application
    Filed: December 5, 2016
    Publication date: December 13, 2018
    Inventors: Alla Khanmamedova, Ashim Kumar Ghosh, Scott Stevenson, David Sullivan, Pooja Bajaj
  • Patent number: 10106474
    Abstract: The disclosure is for a process for producing propylene and hexene (along with ethylene, pentenes, product butenes, heptenes and octenes) by metathesis from butenes (iso-, 1- and cis and trans 2-) and pentenes and then aromatizing the hexenes (along with higher olefins, such as heptenes and octenes) to benzene (along with toluene, xylenes, ethylbenzene and styrene). Since the desired products of the metathesis reaction are propylene and hexene, the feed to the metathesis reaction has a molar ratio for 1-butene:2-butene which favors production of propylene and 3-hexene with the concentration of hexenes and higher olefins in the metathesis product being up to 30 mole %. An isomerization reactor may be used to obtain the desired molar ratio of 1-butene:2-butene for the feed composition into the metathesis reactor. After the metathesis reaction, of hexene and higher olefins are separated for aromatization to benzene and other aromatics.
    Type: Grant
    Filed: February 4, 2014
    Date of Patent: October 23, 2018
    Assignee: SAUDI BASIC INDUSTRIES CORPORATION
    Inventors: Jaap W. van Hal, Scott A. Stevenson, Jim Allman, David L. Sullivan, Travis Conant
  • Publication number: 20180282638
    Abstract: The present invention relates to a process for producing monoaromatic hydrocarbons from a hydrocarbon feed comprising polyaromatics, the process comprising contacting said feed in the presence of hydrogen with a M/A/zeolite catalyst under hydrocracking process conditions.
    Type: Application
    Filed: September 15, 2016
    Publication date: October 4, 2018
    Inventors: Luis Aramburo, Dustin Farmer, Scott A. Stevenson
  • Publication number: 20180280944
    Abstract: The present invention relates to a process for producing LPG from a hydrocarbon feed comprising polyaromatics, the process comprising contacting said feed in the presence of hydrogen with a M/zeolite catalyst under hydrocracking process conditions.
    Type: Application
    Filed: September 15, 2016
    Publication date: October 4, 2018
    Inventors: Luis Aramburo, Maikel van Iersel, Dustin Farmer, Scott A. Stevenson, Emiel van Kimmenade
  • Publication number: 20180273857
    Abstract: The present invention relates to a process for producing monoaromatic hydrocarbons from a hydrocarbon feed comprising polyaromatics, the process comprising contacting said feed in the presence of hydrogen with a M/zeolite catalyst under hydrocracking process conditions.
    Type: Application
    Filed: September 15, 2016
    Publication date: September 27, 2018
    Inventors: Luis Aramburo, Emiel van Kimmenade, Dustin Farmer, Scott A. Stevenson
  • Publication number: 20180265796
    Abstract: The present invention relates to a process for producing LPG from a hydrocarbon feed comprising polyaromatics, the process comprising contacting said feed in the presence of hydrogen with a M/A/zeolite catalyst under hydrocracking process conditions.
    Type: Application
    Filed: September 15, 2016
    Publication date: September 20, 2018
    Inventors: Luis Aramburo, Dustin Farmer, Scott A. Stevenson
  • Publication number: 20180230073
    Abstract: The invention relates to a process for producing benzene comprising the steps of: (a) providing a hydrocracking feed stream comprising C5-C12 hydrocarbons, (b) contacting the hydrocracking feed stream in the presence of hydrogen with a hydrocracking catalyst under process conditions including a temperature of 425-580° C., a pressure of 300-5000 kPa gauge and a Weight Hourly Space Velocity of 3-30 h?1 to produce a hydrocracking product stream comprising BTX and (c) separating the BTX from the hydrocracking product stream, wherein the hydrocracking catalyst comprises a shaped body comprising a zeolite and a binder and a hydrogenation metal deposited on the shaped body, wherein the amount of the hydrogenation metal is 0.010-0.30 wt-% with respect to the total catalyst and wherein the zeolite is ZSM-5 having a silica (SiO2) to alumina (Al2O3) molar ratio of 25-75.
    Type: Application
    Filed: August 18, 2016
    Publication date: August 16, 2018
    Inventors: Alla Khanmamedova, Scott A. Stevenson, Dustin Fickel
  • Patent number: 9782758
    Abstract: In one embodiment, a formed catalyst can comprise: a Ge-ZSM-5 zeolite; a binder comprising silica with 1 to less than 5 wt % non-silica oxides; less than or equal to 0.1 wt % residual carbon; 0.4 to 1.5 wt % platinum; and 4.0 to 4.8 wt % Cs; wherein the weight percentages are based upon a total weight of the catalyst. In one embodiment, a method of making a formed catalyst can comprise: mixing an uncalcined Ge-ZSM-5 zeolite and a binder to form a mixture; forming the mixture into a formed zeolite; calcining the formed zeolite to result in the formed zeolite having less than or equal to 0.1 wt % of residual carbon; ion-exchanging the formed zeolite with cesium; depositing platinum on the formed zeolite; and heating the formed zeolite to result in a final catalyst; wherein the final catalyst comprises 4.0 to 4.8 wt % cesium and 0.4 to 1.5 wt % platinum.
    Type: Grant
    Filed: April 23, 2013
    Date of Patent: October 10, 2017
    Assignee: SAUDI BASIC INDUSTRIES CORPORATION
    Inventors: Ashim Kumar Ghosh, Scott Stevenson, Meghan Simmons, Michael Mier
  • Publication number: 20170144948
    Abstract: The present invention relates to a process for producing benzene from a mixed hydrocarbon feedstream comprising subjecting C6 cut separated from said mixed hydrocarbon feedstream to aromatization to provide a benzene-rich aromatic stream and recovering the benzene from the benzene-rich aromatic stream.
    Type: Application
    Filed: June 25, 2015
    Publication date: May 25, 2017
    Inventors: Scott Stevenson, Dimitri Daniëls
  • Patent number: 9481617
    Abstract: In an embodiment a catalyst comprises a medium or large pore zeolite having germanium incorporated into the zeolite framework. The zeolite can have a pore structure that is one dimensional, two dimensional or three dimensional. A metal selected from Group 10 can be deposited on the zeolite. In an embodiment, a process for synthesizing the zeolite comprises preparing a medium pore zeolite containing germanium in the framework of the zeolite and calcining the zeolite. In an embodiment, the catalyst can be used in a process for the conversion of hydrocarbons comprising contacting a hydrocarbon stream containing alkanes, olefins, or mixtures thereof having 2 to 12 carbon atoms per molecule with the catalyst and recovering the product.
    Type: Grant
    Filed: April 29, 2014
    Date of Patent: November 1, 2016
    Assignee: SAUDI BASIC INDUSTRIES CORPORATION
    Inventors: Scott A. Stevenson, Alla K. Khanmamedova, Dustin B. Farmer, Scott F. Mitchell, Jim Vartuli
  • Patent number: 9475737
    Abstract: This invention is for a catalyst for conversion of hydrocarbons. The catalyst is a non-acidic germanium zeolite, such as Ge-ZSM-5, on which at least two metals, platinum and at least one other metal selected from Group 7, Group 8, Group 9, Group 10 and tin, are deposited on the germanium zeolite. Examples of the other metal are iridium, rhenium, palladium, ruthenium, rhodium, iron, cobalt and tin. The catalyst is prepared by synthesizing a germanium zeolite; depositing platinum and at least one other metal on the germanium zeolite; and calcining after preparation of the zeolite, before depositing the metals or after depositing the metals. The catalyst may be used in a process for the conversion of hydrocarbons, such as propane to aromatics, by contacting the catalyst with a hydrocarbon stream containing alkanes, olefins and mixtures thereof having 2 to 12 carbon atoms per molecule and recovering the product.
    Type: Grant
    Filed: May 18, 2011
    Date of Patent: October 25, 2016
    Assignee: SAUDI BASIC INDUSTRIES CORPORATION
    Inventors: Alla K. Khanmamedova, Scott F. Mitchell, Scott A. Stevenson, Gopalakrishnan G. Juttu
  • Publication number: 20160288108
    Abstract: In an embodiment, a method for making a catalyst, comprises: forming a mixture comprising a germanium source, an alkali metal source, an aluminum source, and a silica source, wherein the mixture has a pH; adjusting the pH of the mixture to a value of greater than or equal to 9.5; crystallizing and calcining the mixture to form a zeolite; depositing platinum on the zeolite; and calcining the zeolite to form the final catalyst. The final catalyst is non-acidic and has an aluminum content of less than or equal to 0.75 wt % based on the total weight of the final catalyst excluding any binder and extrusion aide and a Si:Al2 mole ratio of greater than or equal to 125.
    Type: Application
    Filed: November 6, 2014
    Publication date: October 6, 2016
    Inventors: Alla Khanmamedova, Scott Stevenson
  • Patent number: 9446389
    Abstract: A method for forming a catalyst can comprise: heating a Ge-ZSM-5 zeolite powder at a temperature of 400 to 600° C.; ion-exchanging the heat-treated zeolite powder with an alkali metal and impregnating the heat-treated zeolite powder with noble metal; heating the ion-exchanged, impregnated zeolite powder to a temperature of 250 to 350° C.; mixing the second heat-treated zeolite powder with a solid silica binder and a colloidal silica binder to form a mixture, wherein if the solid silica has a purity of less than or equal to 66 wt % of silica oxide based on the total weight of the solid silica, then the mixture is free of an extrusion aide and the colloidal silica has a particle size of less than 20 nm as measured along a major axis; forming the mixture into a shaped body; and heating the shaped body to 100 to 350° C. to result in the catalyst.
    Type: Grant
    Filed: December 13, 2013
    Date of Patent: September 20, 2016
    Assignee: SAUDI BASIC INDUSTRIES CORPORATION
    Inventors: Ashim Kumar Ghosh, Scott Stevenson, David Sullivan, Corina Mihut, Neeta Kulkarni, Meghann Simmons, Michael Mier
  • Publication number: 20160023878
    Abstract: A funnel device and system transfers liquid materials, such as oil, into a container. The device includes a bowl having a bottom wall and a perimeter wall coupled to and extending upwardly from the bottom wall defining an interior space of the bowl for receiving a fluid therein. A top edge of the perimeter wall defines an access opening into the interior space of the bowl. The bottom wall has a hole positioned therein between a top surface and a bottom surface of the bottom wall. A flange is coupled to and extends downwardly from the perimeter wall and has a bottom edge for engaging a lid of a container. A spout is coupled to the bottom wall at the hole. The spout has an open top end and an open bottom end wherein the spout directs the fluid outwardly from the interior space of the bowl into the container.
    Type: Application
    Filed: July 25, 2014
    Publication date: January 28, 2016
    Inventor: Scott Stevenson
  • Patent number: 9242233
    Abstract: Methods for preparing bound non-acidic germanium zeolite catalysts are disclosed, where the preparation is reproducible and scalable and where the catalysts have similar or the same activity and selectivities of a standard naphtha aromatization catalyst and methods for aromatizing naphtha.
    Type: Grant
    Filed: May 2, 2012
    Date of Patent: January 26, 2016
    Assignee: SAUDI BASIC INDUSTRIES CORPORATION
    Inventors: Ashim K. Ghosh, Scott A. Stevenson, Neeta Kulkarni, Mike Mier, Balamurali K. Nair, Dustin Farmer
  • Patent number: 9233884
    Abstract: This invention is for a catalyst for conversion of hydrocarbons. The catalyst is a germanium zeolite, such as Ge-ZSM-5, on which at least two metals, platinum and at least one other metal selected from Group 7, Group 8, Group 9, Group 10 and tin, are deposited on the germanium zeolite. Examples of the other metal are iridium, rhenium, palladium, ruthenium, rhodium, iron, cobalt and tin. The catalyst is prepared by synthesizing a germanium zeolite; depositing platinum and at least one other metal on the germanium zeolite; and calcining after preparation of the zeolite, before depositing the metals or after depositing the metals. The catalyst may be used in a process for the conversion of hydrocarbons, such as propane to aromatics, by contacting the catalyst with a hydrocarbon stream containing alkanes, olefins and mixtures thereof having 2 to 12 carbon atoms per molecule and recovering the product.
    Type: Grant
    Filed: May 22, 2008
    Date of Patent: January 12, 2016
    Assignee: SAUDI BASIC INDUSTRIES CORPORATION
    Inventors: Alla K. Khanmamedova, Scott F. Mitchell, Scott A. Stevenson, Gopalakrishnan G. Juttu
  • Patent number: D776192
    Type: Grant
    Filed: June 5, 2013
    Date of Patent: January 10, 2017
    Assignee: MEMORIAL UNIVERSITY OF NEWFOUNDLAND
    Inventors: Andrew Staniland, Scott Stevenson, Andrew Fisher, Nick Krouglicof
  • Patent number: D837875
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: January 8, 2019
    Assignee: MEMORIAL UNIVERSITY OF NEWFOUNDLAND
    Inventors: Andrew Staniland, Scott Stevenson, Andrew Fisher, Nick Krouglicof