Patents by Inventor Sundaram Krishnamoorthy

Sundaram Krishnamoorthy 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: 11207661
    Abstract: A process for preparing a peptized alumina having increased solids and acid contents and a decreased water content. The process comprising mixing a boehmite or pseudoboehmite alumina and acid with a high intensity, high energy mixer at a ratio of 0.16 to 0.65 moles acid/moles alumina for a time period sufficient to form a substantially free-flowing solid particulate having a solids content of 45 to 65 wt %. When used in catalyst manufacture, peptized alumina produced by the process provides an increased rate in catalyst production and decreased costs due to high solids concentration and the presence of less water to be evaporated.
    Type: Grant
    Filed: July 25, 2017
    Date of Patent: December 28, 2021
    Assignee: W.R. Grace & Co.—CONN.
    Inventors: Udayshankar Singh, Sundaram Krishnamoorthy, Michael Scott Ziebarth, Wu-Cheng Cheng
  • Publication number: 20190184375
    Abstract: A process for preparing a peptized alumina having increased solids and acid contents and a decreased water content. The process comprising mixing a boehmite or pseudoboehmite alumina and acid with a high intensity, high energy mixer at a ratio of 0.16 to 0.65 moles acid/moles alumina for a time period sufficient to form a substantially free-flowing solid particulate having a solids content of 45 to 65 wt %. When used in catalyst manufacture, peptized alumina produced by the process provides an increased rate in catalyst production and decreased costs due to high solids concentration and the presence of less water to be evaporated.
    Type: Application
    Filed: July 25, 2017
    Publication date: June 20, 2019
    Applicant: W.R. GRACE & CO.- CONN.
    Inventors: Udayshankar Singh, Sundaram Krishnamoorthy, Michael Scott Ziebarth, Wu-Cheng Cheng
  • Patent number: 10184085
    Abstract: A method for deoxygenating renewable oils comprised of natural oils or greases or derivatives thereof containing triglycerides or free fatty acids includes the steps of: providing a catalyst comprising a support predominantly comprised of alumina with metal compounds provided on the support based on Mo and at least one selected from the group consisting of Ni and Co, and at least one selected from the group consisting of Cu and Cr, and contacting the renewable oils with the catalyst under conditions sufficient to deoxygenate the renewable oils.
    Type: Grant
    Filed: June 8, 2015
    Date of Patent: January 22, 2019
    Assignee: W. R. GRACE & CO.-CONN
    Inventors: Sundaram Krishnamoorthy, Stephen Raymond Schmidt
  • Publication number: 20170210996
    Abstract: A method for deoxygenating renewable oils comprised of natural oils or greases or derivatives thereof containing triglycerides or free fatty acids includes the steps of: providing a catalyst comprising a support predominantly comprised of alumina with metal compounds provided on the support based on Mo and at least one selected from the group consisting of Ni and Co, and at least one selected from the group consisting of Cu and Cr, and contacting the renewable oils with the catalyst under conditions sufficient to deoxygenate the renewable oils.
    Type: Application
    Filed: June 8, 2015
    Publication date: July 27, 2017
    Applicant: W. R. Grace & Co.-Conn.
    Inventors: Sundaram Krishnamoorthy, Stephen Raymond Schmidt
  • Patent number: 9365779
    Abstract: A catalyst composition comprising at least about 10% by weight pentasil, at least about 12% by weight Y-type zeolite at a pentasil to Y zeolite ratio of at least 0.25, and wherein the pentasil and Y zeolite comprise at least about thirty-five percent of the catalyst have been shown to optimize light olefin yields and LPG from FCC processes. Embodiments having matrix surface areas greater than 25 m2/g, phosphorous and rare earth are preferred. The compositions of this invention are particularly useful in typical fluid catalytic cracking (FCC) processes.
    Type: Grant
    Filed: November 3, 2005
    Date of Patent: June 14, 2016
    Assignee: W. R. GRACE & CO.-CONN.
    Inventors: Wu Cheng Cheng, Meenakshi Sundaram Krishnamoorthy, Ranjit Kumar, Xinjin Zhao, Michael Scott Ziebarth
  • Patent number: 7976697
    Abstract: A NOx reduction composition and process of using the composition to reduce the content of NOx emissions and gas phase reduced nitrogen species released from the regeneration zone during fluid catalytic cracking of a hydrocarbon feedstock into lower molecular weight components is disclosed. The process comprises contacting a hydrocarbon feedstock during a fluid catalytic cracking (FCC) process wherein a regeneration zone of an fluid catalytic cracking unit (FCCU) is operated in a partial or incomplete combustion mode under FCC conditions, with a circulating inventory of an FCC cracking catalyst and a particulate NOx reduction composition. The NOx reduction composition has a mean particle size of greater than 45 ?m and comprises (1) a zeolite component having (i) a pore size of form 2-7 A Angstroms and (ii) a SiO2 to Al2O3 molar ratio of less than 500, and (2) at least one noble metal selected from the group consisting of platinum, palladium, rhodium, iridium, osmium, ruthenium, rhenium and mixtures thereof.
    Type: Grant
    Filed: March 24, 2006
    Date of Patent: July 12, 2011
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: M. Sundaram Krishnamoorthy, Michael Scott Ziebarth, George Yaluris, Roger Jean Lussier, John Allen Rudesill
  • Patent number: 7918991
    Abstract: Compositions for reduction of NOx generated during a catalytic cracking process, preferably, a fluid catalytic cracking process, are disclosed. The compositions comprise a fluid catalytic cracking catalyst composition, preferably containing a Y-type zeolite, and a NOx reducing zeolite having a pore size ranging from about 2 to about 7.2 Angstroms and a SiO2 to Al2O3 molar ratio of less than about 500 and being stabilized with a metal or metal ion selected from the group consisting of zinc, iron and mixtures thereof. Preferably, the NOx reducing zeolite particles are bound with an inorganic binder to form a particulate composition. In the alternative, the NOx reducing zeolite particles are incorporated into the cracking catalyst as an integral component of the catalyst.
    Type: Grant
    Filed: March 24, 2006
    Date of Patent: April 5, 2011
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Michael Scott Ziebarth, M. Sundaram Krishnamoorthy, Roger Jean Lussier
  • Patent number: 7780935
    Abstract: A process for the reduction of NOx emissions from a regeneration zone during a fluid catalytic cracking (FCC) process are disclosed. The process comprises contacting a hydrocarbon feedstock with a circulating inventory of an FCC cracking catalyst and a NOx reduction composition during an FCC process. The NOx reduction composition comprises at least one reduced nitrogen species component having the ability to reduce the content of reduced nitrogen species to molecular nitrogen under reducing or partial burn FCC conditions and at least one NOx reduction component having the ability to convert NOx to molecular nitrogen under oxidizing or full burn FCC conditions.
    Type: Grant
    Filed: February 23, 2006
    Date of Patent: August 24, 2010
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: John Allen Rudesill, George Yaluris, Meenakshi Sundaram Krishnamoorthy, Timothy Dougan, Katherine W. Dougan, legal representative
  • Publication number: 20090134065
    Abstract: The catalyst of this invention is capable of enhancing light olefin, e.g., propylene, yields in fluidizable catalytic cracking (FCC) processes. The catalyst comprises (a) pentasil zeolite, (b) at least 5% by weight phosphorus (P2O5) based on particles containing the pentasil, and at least about 1% by weight iron oxide, as measured by Fe2O3, outside of the pentasil zeolite's framework. The catalyst is fluidizable and has an average particle size in the range of about 20 to about 200 microns. The catalyst composition can further comprise additional zeolite suitable for cracking hydrocarbons in a FCC process. The catalyst has been shown to be highly active compared to other catalysts and shows a high selectivity for propylene produced in an FCC process.
    Type: Application
    Filed: March 23, 2006
    Publication date: May 28, 2009
    Inventors: Wu-Cheng Cheng, Ranjit Kumar, Meenakshi Sundaram Krishnamoorthy, Michael Scott Ziebarth, Philip S. Deitz
  • Publication number: 20090057199
    Abstract: Compositions for reduction of NOx generated during a catalytic cracking process, preferably, a fluid catalytic cracking process, are disclosed. The compositions comprise a fluid catalytic cracking catalyst composition, preferably containing a Y-type zeolite, and a NOx reducing zeolite having a pore size ranging from about 2 to about 7.2 Angstroms and a SiO2 to Al2O3 molar ratio of less than about 500 and being stabilized with a metal or metal ion selected from the group consisting of zinc, iron and mixtures thereof. Preferably, the NOx reducing zeolite particles are bound with an inorganic binder to form a particulate composition. In the alternative, the NOx reducing zeolite particles are incorporated into the cracking catalyst as an integral component of the catalyst.
    Type: Application
    Filed: March 24, 2006
    Publication date: March 5, 2009
    Inventors: Michael Scott Ziebarth, M. Sundaram Krishnamoorthy, Roger Jean Lussier
  • Publication number: 20090050527
    Abstract: A NOx reduction composition and process of using the composition to reduce the content of NOx emissions and gas phase reduced nitrogen species released from the regeneration zone during fluid catalytic cracking of a hydrocarbon feedstock into lower molecular weight components is disclosed. The process comprises contacting a hydrocarbon feedstock during a fluid catalytic cracking (FCC) process wherein a regeneration zone of an fluid catalytic cracking unit (FCCU) is operated in a partial or incomplete combustion mode under FCC conditions, with a circulating inventory of an FCC cracking catalyst and a particulate NOx reduction composition. The NOx reduction composition has a mean particle size of greater than 45 ?m and comprises (1) a zeolite component having (i) a pore size of form 2-7 A Angstroms and (ii) a SiO2 to Al2O3 molar ratio of less than 500, and (2) at least one noble metal selected from the group consisting of platinum, palladium, rhodium, iridium, osmium, ruthenium, rhenium and mixtures thereof.
    Type: Application
    Filed: March 24, 2006
    Publication date: February 26, 2009
    Inventors: M. Sundaram Krishnamoorthy, Michael Scott Ziebarth, George Yaluris, Roger Jean Lussier, John Allen Rudesill
  • Publication number: 20080213150
    Abstract: Processes for the reduction of NOx emissions from a regeneration zone during a fluid catalytic cracking of a hydrocarbon feedstock into lower molecular weight components are disclosed. The processes comprise contacting during a fluid catalytic cracking (FCC) process where NOx emissions are released from a regeneration zone of a fluid catalytic cracking unit (FCCU) operating in a heterogeneous combustion mode under FCC conditions, a hydrocarbon feedstock with a circulating inventory of a FCC cracking catalyst and a NOx reduction composition. The NOx reduction composition comprises: (1) at least one reduced nitrogen species component having the ability to reduce the content of reduced nitrogen species to molecular nitrogen under reducing or partial burn FCC conditions and (2) at least one NOx reduction component having the ability to convert NOx to molecular nitrogen under oxidizing or full burn FCC conditions.
    Type: Application
    Filed: February 23, 2006
    Publication date: September 4, 2008
    Inventors: George Yaluris, John Allen Rudesill, Meenakshi Sundaram Krishnamoorthy, Timothy J. Dougan