Patents by Inventor Teh Chung Ho

Teh Chung Ho 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: 7390664
    Abstract: The present invention relates to an apparatus and a process for the high-throughput, quick screening, optimization, regeneration, reduction and activation of catalysts. More specifically, the present invention is a method and apparatus to quickly screen, optimize and regenerate multiple fast deactivating catalysts while maintaining a predefined range of time-on-stream.
    Type: Grant
    Filed: December 20, 2002
    Date of Patent: June 24, 2008
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Shun Chong Fung, Teh Chung Ho
  • Patent number: 7288182
    Abstract: A process for hydroprocessing petroleum and chemical feedstocks by use of a bulk multimetallic catalyst comprised of at least one Group VIII non-noble metal and at least one, preferably two Group VIB metal wherein the ratio of Group VIB metal to Group VIII metal is from about 10:1 to 1:10.
    Type: Grant
    Filed: January 14, 2000
    Date of Patent: October 30, 2007
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Stuart Leon Soled, Sabato Miseo, Roman Krycak, Hilda B. Vroman, Teh Chung Ho, Kenneth Lloyd Riley
  • Publication number: 20040121470
    Abstract: The present invention relates to an apparatus and a process for the high-throughput, quick screening, optimization, regeneration, reduction and activation of catalysts. More specifically, the present invention is a method and apparatus to quickly screen, optimize and regenerate multiple fast deactivating catalysts while maintaining a predefined range of time-on-stream.
    Type: Application
    Filed: December 20, 2002
    Publication date: June 24, 2004
    Inventors: Shun Chong Fung, Teh Chung Ho
  • Publication number: 20020043478
    Abstract: A cavitation enhanced atomizing process comprises forming a flowing solution of the liquid to be atomized and a lower boiling cavitating liquid. This flowing solution is then contacted with a pressure reducing means, at a temperature below the bubble point of the cavitating liquid in the solution, to produce cavitation bubbles. These bubbles comprise cavitation liquid vapor and the bubble nucleation produces a two-phase fluid of the bubbles and liquid solution. The two-phase fluid is passed downstream into and through an atomizing means, such as an orifice, and into a lower pressure atomizing zone, in which the bubbles vaporize to form a spray of liquid droplets. The nucleated bubbles also grow in size as the so-formed two-phase fluid passes downstream to and through the atomizing means.
    Type: Application
    Filed: August 6, 2001
    Publication date: April 18, 2002
    Inventors: Dean C. Draemel, Nicholas C. Nahas, Teh Chung Ho
  • Patent number: 6171476
    Abstract: A cavitation enhanced atomizing process comprises forming a flowing solution of the liquid to be atomized and a lower boiling cavitating liquid. This flowing solution is then contacted with a pressure reducing means, at a temperature below the bubble point of the cavitating liquid in the solution, to produce cavitation bubbles. These bubbles comprise cavitation liquid vapor and the bubble nucleation produces a two-phase fluid of the bubbles and liquid solution. The two-phase fluid is passed downstream into and through an atomizing means, such as an orifice, and into a lower pressure atomizing zone, in which the bubbles vaporize to form a spray of liquid droplets. The nucleated bubbles also grow in size as the so-formed two-phase fluid passes downstream to and through the atomizing means.
    Type: Grant
    Filed: March 18, 1999
    Date of Patent: January 9, 2001
    Assignee: Exxon Research and Engineering Company
    Inventors: Dean C. Draemel, Nicholas C. Nahas, Teh Chung Ho
  • Patent number: 6156189
    Abstract: The present invention is directed to a Fluid Catalytic Cracking process conducted under fluid catalytic cracking conditions by injecting into at least one reaction zone of a fluid catalytic cracking unit (FCCU) having one or more risers, a plurality of feeds wherein said plurality of feeds comprises at least one feed (.alpha.) and at least another feed (.beta.) wherein said feeds (.alpha.) and (.beta.) (a) differ in Conradson Carbon Residue by at least about 2 wt % points; or (b) differ in hydrogen content by at least about 0.2 wt %; or (c) differ in API gravities by at least about 2 points; or (d) differ in nitrogen content by at least about 50 ppm; or (e) differ in carbon-to-hydrogen ratio by at least about 0.3; or (f) differ in mean boiling point by at least about 200.degree. F; and wherein said feeds (.alpha.) and (.beta.) are alternately injected and wherein said alternate injection maintains said risers in a cyclic steady state, while the rest of the FCC unit is in a steady state.
    Type: Grant
    Filed: April 20, 1999
    Date of Patent: December 5, 2000
    Assignee: Exxon Research and Engineering Company
    Inventors: Teh Chung Ho, Shun Chong Fung, Daniel Paul Leta
  • Patent number: 6123832
    Abstract: The invention relates to Fluid Catalytic Cracking (FCC) for producing liquid fuels and light olefins from liquid hydrocarbon mixtures such as petroleum fractions.
    Type: Grant
    Filed: January 14, 1999
    Date of Patent: September 26, 2000
    Assignee: Exxon Research and Engineering Co.
    Inventors: Teh Chung Ho, Shun Chong Fung, Gordon Frederick Stuntz, Robert Charles Welch, Daniel Paul Leta
  • Patent number: 5958224
    Abstract: The instant invention is directed to a process for removing hard sulfurs from hydrocarbon streams by selectively oxidizing hard sulfurs in a hydrotreated stream, under oxidizing conditions in the presence of an effective amount of an oxidizing agent, wherein the oxidizing agent is a peroxometal complex and wherein the hard sulfurs are oxidized into the corresponding sulfoxides and sulfones.
    Type: Grant
    Filed: August 14, 1998
    Date of Patent: September 28, 1999
    Assignee: Exxon Research and Engineering Co
    Inventors: Teh Chung Ho, Chang Samuel Hsu, Gerald Dennis Dupre, Ronald Liotta, Viktor Buchholz
  • Patent number: 5841013
    Abstract: The present invention is directed toward a hydrogenation process using a highly active aromatics hydrogenation catalyst. The catalyst is prepared by decomposing a catalyst precursor selected from the group consisting of metal amine molybdates, metal amine tungstates and mixtures thereof, wherein said metal amine catalyst precursor has the general formula ML (Mo.sub.y W.sub.1-y O.sub.4).sub.a where M is Cr and/or one or more divalent promoter metals selected from the group consisting of Mn, Fe, Co, Ni, Cu and Zn; L is one or more neutral nitrogen-containing ligands at least one of which is a chelating polydentate ligand; 0.ltoreq.y.ltoreq.1; and a=1 for non-chromium containing catalysts and wherein 0.5.ltoreq.a.ltoreq.3 for chromium containing catalysts, at a temperature of about 200.degree. C. to about 400.degree. C. in an inert atmosphere; then reducing at a temperature of about 300.degree. C. to about 450.degree. C.
    Type: Grant
    Filed: May 16, 1997
    Date of Patent: November 24, 1998
    Assignee: Exxon Research and Engineering Company
    Inventors: Teh Chung Ho, Charles Ralph Symon, Viktor Buchholz, Michel Daage
  • Patent number: 5831138
    Abstract: The present invention is directed toward a catalyst composition comprising a catalyst prepared by a process comprising: (a) impregnating an oxide precursor selected from the group consisting of rare earth oxide precursors, yttria precursors and mixtures thereof, onto an inorganic refractory oxide support; (b) drying said support at a temperature of about 100.degree. to about 120.degree. C. followed by calcining said support at a temperature of about 400.degree. to about 600.degree. C.; and (c) compositing or depositing on said support of step (b), a catalyst precursor salt represented by (ML)(Mo.sub.y W.sub.1-y O.sub.4).sub.a wherein M comprises Cr and/or one or more divalent promoter metals selected from the group consisting of Mn, Fe, Co, Ni, Cu, Zn and mixtures thereof, wherein y is any value ranging from 0 to 1, and wherein L is one or more neutral, nitrogen-containing ligands at least one of which is a chelating polydentate ligand; a=1 when chromium is not one of the promoter metals and 0.5.ltoreq.a.
    Type: Grant
    Filed: August 15, 1997
    Date of Patent: November 3, 1998
    Assignee: Exxon Research and Engineering Company
    Inventors: Teh Chung Ho, Stuart Leon Soled, Sabato Miseo, Gary Brice McVicker, Michel Daage, Viktor Buchholz
  • Patent number: 5767037
    Abstract: The present invention is directed toward a highly active aromatics hydrogenation catalyst and its use. The catalyst composition is prepared by:(a) decomposing a catalyst precursor selected from the group consisting of metal amine molybdates, metal amine tungstates and mixtures thereof, wherein said metal amine catalyst precursor has the general formulaML(Mo.sub.y W.sub.1-y O.sub.4)awhere M is Cr and/or one or more divalent promoter metals selected from the group consisting of Mn, Fe, Co, Ni, Cu and Zn; L is one or more neutral nitrogen containing ligands at least one of which is a chelating polydentate ligand; 0.ltoreq.y.ltoreq.1; and a=1 for non-chromium containing catalysts and wherein 0.5.ltoreq.a.ltoreq.3 for chromium containing catalysts, at a temperature of about 200.degree. to about 400.degree. C. in an inert atmosphere; and(b) reducing at a temperature of about 300.degree. to about 450.degree. C. said metal amine catalyst precursor to form a catalyst.
    Type: Grant
    Filed: August 18, 1995
    Date of Patent: June 16, 1998
    Assignee: Exxon Research and Engineering Company
    Inventors: Teh Chung Ho, Charles R. Symon, Viktor Buchholz, Michel Daage
  • Patent number: 5728644
    Abstract: The present invention is directed toward a catalyst composition comprising a catalyst prepared by a process comprising: (a) impregnating an oxide precursor selected from the group consisting of rare earth oxide precursors, yttria precursors and mixtures thereof, onto an inorganic refractory oxide support; (b) drying said support at a temperature of about 100.degree. to about 120.degree. C. followed by calcining said support at a temperature of about 400.degree. to about 600.degree. C.; and (c) compositing or depositing on said support of step (b), a catalyst precursor salt represented by (ML)(Mo.sub.y W.sub.1-y O.sub.4).sub.a wherein M comprises Cr and/or one or more divalent promoter metals selected from the group consisting of Mn, Fe, Co, Ni, Cu, Zn and mixtures thereof, wherein y is any value ranging from 0 to 1, and wherein L is one or more neutral, nitrogen-containing ligands at least one of which is a chelating polydentate ligand; a=1 when chromium is not one of the promoter metals and 0.5.ltoreq.a.
    Type: Grant
    Filed: September 5, 1995
    Date of Patent: March 17, 1998
    Assignee: Exxon Research and Engineering Company
    Inventors: Teh Chung Ho, Stuart Leon Soled, Sabato Miseo, Gary Brice Mc Vicker, Michel Daage, Viktor Buchholz
  • Patent number: 5648577
    Abstract: The present invention is directed toward a catalyst composition prepared by a process comprising: (a) impregnating an oxide precursor selected from the group consisting of rare earth oxide precursors, yttria precursors and mixtures thereof, onto an inorganic refractory oxide support; (b) drying said support at a temperature of about 100.degree. to about 120.degree. C. followed by calcining said support at a temperature of about 400.degree. to about 600.degree. C.; and (c) compositing or depositing on said support of step (b), a catalyst precursor salt represented by (ML)(Mo.sub.y W.sub.1-y O.sub.4).sub.a wherein M comprises Cr and/or one or more divalent promoter metals selected from the group consisting of Mn, Fe, Co, Ni, Cu, Zn and mixtures thereof, wherein y is any value ranging from 0 to 1, and wherein L is one or more neutral, nitrogen-containing ligands at least one of which is a chelating polydentate ligand; a=1 when chromium is not one of the promoter metals and 0.5.ltoreq.a.ltoreq.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: July 15, 1997
    Assignee: Exxon Research and Engineering Company
    Inventors: Teh Chung Ho, Stuart Leon Soled, Sabato Miseo, Gary Brice McVicker, Michel Daage, Viktor Buchholz