Patents by Inventor Gary J. Green
Gary J. Green 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: 5106799Abstract: A process and apparatus for fluidized bed combustion using a dense phase combustion zone over a dilute phase combustion zone. When used to regenerate FCC catalyst containing coke with relatively large amounts of NO.sub.x precursors, the catalyst is added to and partially regenerated in the dense phase zone and then falls down into the dilute phase zone. Most of the combustion air is added to the dilute phase and rises into and fluidizes the dense phase zone. NO.sub.x formed in the dilute phase is reduced to N.sub.2 in the dense phase.Type: GrantFiled: January 28, 1991Date of Patent: April 21, 1992Assignee: Mobil Oil CorporationInventors: Gary J. Green, Tsoung Y. Yan
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Patent number: 5085762Abstract: Emission of noxious nitrogen oxides with the flue gas from the regenerator of a fluid catalytic cracking plant are reduced by incorporating into the circulating inventory of cracking catalyst separate additive particles that contain a copper-loaded zeolite material having a characteristic structure with a defined X-ray diffraction pattern. The preferred material of this type is zeolite MCM-22. The copper may be exchanged onto the zeolite or impregnated into the catalyst. In addition, the catalyst may include titanium or zirconium to provide stability and further improvements in stability may be obtained with the addition of rareearth metal cations, especially cerium or yttrium. NOX and CO emissions from the regenerator are reduced, and the gasoline produced in the unit may have an improved octane number.Type: GrantFiled: July 5, 1990Date of Patent: February 4, 1992Assignee: Mobil Oil CorporationInventors: Robert P. L. Absil, Emmerson Bowes, Gary J. Green, David O. Marler, David S. Shihabi, Richard F. Socha
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Patent number: 5055029Abstract: A circulating fluid bed combustion (CFBC) unit, which burns a carbon and nitrogen containing fuel to produce heat and flue gas comprising NO.sub.x, operates with reduced emissions of NO.sub.x from the flue gas by adding to the circulating fluid bed a catalytically effective amount of a DeNO.sub.x catalyst, such as bismuth oxide on a silica/alumina support. The DeNO.sub.x catalyst may circulate freely with the circulating inventory of particulates in the CFB, or can be disposed on a heavier particle which "slips" and has an extended residence time in the combustion zone where the carbonaceous fuel is burned. A CO combustion promoter, such as Pt on silica/alumina may also be present.Type: GrantFiled: February 27, 1991Date of Patent: October 8, 1991Assignee: Mobil Oil CorporationInventors: Amos A. Avidan, Arthur A. Chin, Gary J. Green
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Patent number: 4991521Abstract: A process and apparatus for fluidized bed combustion using a dense phase combustion zone over a dilute phase combustion zone. When used to regenerate FCC catalyst containing coke with relatively large amounts of NO.sub.x precursors, the catalyst is added to and partially regenerated in the dense phase zone and then falls down into the dilute phase zone. Most of the combustion air is added to the dilute phase and rises into and fluidizes the dense phase zone. NO.sub.x formed in the dilute phase is reduced to N.sub.2 in the dense phase.Type: GrantFiled: April 12, 1988Date of Patent: February 12, 1991Assignee: Mobil Oil CorporationInventors: Gary J. Green, Tsoung Y. Yan
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Patent number: 4980052Abstract: Emission of noxious nitrogen oxides with the flue gas from the regenerator of a fluid catalytic cracking plant are reduced by incorporating into the circulating inventory of cracking catalyst separate additive particles that contain a copper-loaded zeolite. A particularly effective additive is provided by ion-exchanging ZSM-5 zeolite with cupric ion. With such preferred additive, CO emissions also are reduced, and the recovered gasoline has enhanced octane number.Type: GrantFiled: November 3, 1989Date of Patent: December 25, 1990Assignee: Mobil Oil CorporationInventors: Gary J. Green, David S. Shihabi, Tsoung Y. Yan
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Patent number: 4973399Abstract: Emission of noxious nitrogen oxides with the flue gas from the regenerator of a fluid catalytic cracking plant are reduced by incorporating into the circulating inventory of cracking catalyst separate additive particles that contain a copper-loaded zeolite. A particularly effective additive is provided, for example, by treating a ZSM-5 zeolite in a matrix consisting predominantly of titania, zirconia or a mixture thereof with a solution containing both copper and rare earth cations to incorporate both of these elements with the zeolitic composition.Type: GrantFiled: December 21, 1989Date of Patent: November 27, 1990Assignee: Mobil Oil CorporationInventors: Gary J. Green, David S. Shihabi, Tsoung Y. Yan
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Patent number: 4970397Abstract: This invention relates to electromagnetically induced thermal activation method and apparatus for in-situ preparation of samples including zeolite catalyst. More particularly, the invention relates to preparation of samples for IR spectroscopic characterization analysis. The technique is based on electromagnetically introduced thermal treatment of a catalyst situated in a specially designed vacum cell which is housed in the sample compartment of an IR analyzer. The sample is selectively heated by adsorption of direct infrared radiation from a laser. The sample is supported on a negligible mass which preferably comprises a wire made of nichrome.Type: GrantFiled: June 16, 1989Date of Patent: November 13, 1990Assignee: Mobil Oil CorporationInventors: Gary J. Green, Stuart D. Hellring
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Patent number: 4962075Abstract: Improved zeolitic copper catalysts are prepared by incorporating with the catalyst a steam-stabilizing amount of titanium or zirconium compound. The novel compositions are particularly useful in treating wet exhaust gases to reduce the content of one or more pollutants such as nitrogen oxides, carbon monoxide and hydrocarbons.Type: GrantFiled: December 5, 1988Date of Patent: October 9, 1990Assignee: Mobil Oil Corp.Inventors: Gary J. Green, David S. Shihabi
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Patent number: 4865444Abstract: Disclosed is apparatus comprising a means for injecting a controlled stream of hydrocarbon liquid into a concurrently flowing stream of gas in a Venturi forming droplets. Droplets are subsequently combusted in a gas stream. The level of radient emissions is measured photoelectrically. Results obtained are useful in predicting service life of combustor walls in jet engines and the like.Type: GrantFiled: October 15, 1987Date of Patent: September 12, 1989Assignee: Mobil Oil CorporationInventors: Gary J. Green, Tsoung Y. Yan
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Patent number: 4851374Abstract: A continuous regenerator for the two-stage regeneration of hot coked fluid catalytic cracking catalyst, and a method for regenerating coked catalyst by combustion with air and with reduced emissions of nitrogen oxides, or with reduced emissions of any two or more of the pollutants which include nitrogen oxides, sulfur oxides and carbon monoxide.Type: GrantFiled: May 29, 1987Date of Patent: July 25, 1989Assignee: Mobil Oil CorporationInventors: Tsoung Y. Yan, Gary J. Green
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Patent number: 4828680Abstract: Combustible carbonaceous particles such as particles of sponge coke or coal are incorporated with the circulating inventory of cracking catalyst in a fluid catalytic cracking unit. The carbonaceous particles selectively sorb metal contaminants in the feed, thereby extending catalyst life, and they also serve to reduce NO.sub.x emissions in certain instances. The sorbed metals values may be recovered as the carbonaceous particles are burned.Type: GrantFiled: January 20, 1988Date of Patent: May 9, 1989Assignee: Mobil Oil CorporationInventors: Gary J. Green, Billy K. Huh, Tsoung Y. Yan
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Patent number: 4819831Abstract: Uniform droplets of a liquid are produced by positioning the end of a capillary tube in the throat of a venturi. Gas flowing through the venturi detaches droplets from the end of the capillary tube without requiring high volume gas flow or excessively high velocity of the droplets.Type: GrantFiled: September 22, 1987Date of Patent: April 11, 1989Assignee: Mobil Oil CorporationInventors: Gary J. Green, Frederick L. Dryer, Dennis E. Walsh
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Patent number: 4804274Abstract: Disclosed are methods and apparatus for determining phase transition temperatures and, more particularly, for determining cloud, fluidity, freezing, and haze points of hydrocarbon fuels and hydrocarbon/oxygenate fuel blends. The attenuation of laser light as it passes through the sample, then through a laser line filter, and then into a photodetector is used to determine the transition temperature.Type: GrantFiled: December 30, 1986Date of Patent: February 14, 1989Assignee: Mobil Oil CorporationInventor: Gary J. Green
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Patent number: 4717049Abstract: Uniform droplets of a liquid are produced by positioning the end of a capillary tube in the throat of a venturi. Gas flowing through the venturi detaches droplets from the end of the capillary tube without requiring high volume gas flow or excessively high velocity of the droplets.Type: GrantFiled: October 9, 1986Date of Patent: January 5, 1988Assignee: Mobil Oil CorporationInventors: Gary J. Green, Frederick L. Dryer, Dennis E. Walsh
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Patent number: 4672143Abstract: A diffusion flame reactor for cracking hydrocarbon gas has an oxygen-deficient zone in the center of the flame or in the center of an array of flames. Propane, n-octane, iso-octane and decalin are cracked to ethylene, acetylene, propylene, butenes, and butadienes which are withdrawn from the flame.Type: GrantFiled: November 8, 1985Date of Patent: June 9, 1987Assignee: Mobil Oil CorporationInventors: Gary J. Green, Tsoung-Y Yan
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Patent number: 4672144Abstract: Methane is converted to higher, more reactive, hydrocarbon products by a diffusion flame. Methane is converted to C.sub.2 + products by pyrolysis in the interior of the flame with oxidizing gas flowing outside of the flame. More reactive products are withdrawn from the center of the flame by a probe tube and cooled by the flowing oxidizing gas to stop the reaction.Type: GrantFiled: November 8, 1985Date of Patent: June 9, 1987Assignee: Mobil Oil CorporationInventor: Gary J. Green
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Patent number: 4643666Abstract: The burning characteristics of a relatively hydrogen deficient fuel are improved by physically mixing with, but not dissolving in, the fuel a light hydrogen rich vapor, such as hydrogen and/or methane, ethane, etc.Type: GrantFiled: October 9, 1984Date of Patent: February 17, 1987Assignee: Mobil Oil CorporationInventors: Gary J. Green, Harry A. McVeigh, Joe E. Penick, Tsoung Y. Yan
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Patent number: 4640675Abstract: Decreasing the viscosity of and improving the atomizing and burning characteristics of a hydrogen deficient fuel by dissolving a light, hydrogen rich hydrocarbon in the fuel.Type: GrantFiled: October 9, 1984Date of Patent: February 3, 1987Assignee: Mobil Oil CorporationInventors: Gary J. Green, Harry A. McVeigh, Joe E. Penick, Tsoung Y. Yan
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Patent number: 4628040Abstract: Uniform droplets of a bead-forming liquid are produced by positioning the end of a capillary tube in the throat of a venturi. An immiscible fluid flowing through the venturi detaches the droplets from the end of the capillary tube to produce uniform, spherical droplets which harden into spheroidal beads which have a uniform size.Type: GrantFiled: September 17, 1985Date of Patent: December 9, 1986Assignee: Mobil Oil CorporationInventors: Gary J. Green, Albert B. Schwartz
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Patent number: 4589978Abstract: SO.sub.x emission control from a catalytic cracking regenerator unit is improved by using a SO.sub.x transfer catalyst which has improved SO.sub.x adsorption capacity and which consists essentially of cerium or cerium and lanthanum or comprises cerium and/or lanthanum and alumina wherein cerium comprises at least about 1 wt. %.Type: GrantFiled: March 1, 1985Date of Patent: May 20, 1986Assignee: Mobil Oil CorporationInventors: Gary J. Green, Tsoung Y. Yan