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).
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Patent number: 11207661Abstract: 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: GrantFiled: July 25, 2017Date of Patent: December 28, 2021Assignee: W.R. Grace & Co.—CONN.Inventors: Udayshankar Singh, Sundaram Krishnamoorthy, Michael Scott Ziebarth, Wu-Cheng Cheng
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Publication number: 20190184375Abstract: 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: ApplicationFiled: July 25, 2017Publication date: June 20, 2019Applicant: W.R. GRACE & CO.- CONN.Inventors: Udayshankar Singh, Sundaram Krishnamoorthy, Michael Scott Ziebarth, Wu-Cheng Cheng
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Patent number: 10184085Abstract: 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: GrantFiled: June 8, 2015Date of Patent: January 22, 2019Assignee: W. R. GRACE & CO.-CONNInventors: Sundaram Krishnamoorthy, Stephen Raymond Schmidt
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Publication number: 20170210996Abstract: 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: ApplicationFiled: June 8, 2015Publication date: July 27, 2017Applicant: W. R. Grace & Co.-Conn.Inventors: Sundaram Krishnamoorthy, Stephen Raymond Schmidt
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Patent number: 9365779Abstract: 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: GrantFiled: November 3, 2005Date of Patent: June 14, 2016Assignee: W. R. GRACE & CO.-CONN.Inventors: Wu Cheng Cheng, Meenakshi Sundaram Krishnamoorthy, Ranjit Kumar, Xinjin Zhao, Michael Scott Ziebarth
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Patent number: 7976697Abstract: 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: GrantFiled: March 24, 2006Date of Patent: July 12, 2011Assignee: W. R. Grace & Co.-Conn.Inventors: M. Sundaram Krishnamoorthy, Michael Scott Ziebarth, George Yaluris, Roger Jean Lussier, John Allen Rudesill
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Patent number: 7918991Abstract: 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: GrantFiled: March 24, 2006Date of Patent: April 5, 2011Assignee: W. R. Grace & Co.-Conn.Inventors: Michael Scott Ziebarth, M. Sundaram Krishnamoorthy, Roger Jean Lussier
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Patent number: 7780935Abstract: 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: GrantFiled: February 23, 2006Date of Patent: August 24, 2010Assignee: W. R. Grace & Co.-Conn.Inventors: John Allen Rudesill, George Yaluris, Meenakshi Sundaram Krishnamoorthy, Timothy Dougan, Katherine W. Dougan, legal representative
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Publication number: 20090134065Abstract: 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: ApplicationFiled: March 23, 2006Publication date: May 28, 2009Inventors: Wu-Cheng Cheng, Ranjit Kumar, Meenakshi Sundaram Krishnamoorthy, Michael Scott Ziebarth, Philip S. Deitz
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Publication number: 20090057199Abstract: 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: ApplicationFiled: March 24, 2006Publication date: March 5, 2009Inventors: Michael Scott Ziebarth, M. Sundaram Krishnamoorthy, Roger Jean Lussier
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Publication number: 20090050527Abstract: 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: ApplicationFiled: March 24, 2006Publication date: February 26, 2009Inventors: M. Sundaram Krishnamoorthy, Michael Scott Ziebarth, George Yaluris, Roger Jean Lussier, John Allen Rudesill
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Publication number: 20080213150Abstract: 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: ApplicationFiled: February 23, 2006Publication date: September 4, 2008Inventors: George Yaluris, John Allen Rudesill, Meenakshi Sundaram Krishnamoorthy, Timothy J. Dougan