Patents by Inventor John N. Harbinson
John N. Harbinson 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: 5730784Abstract: Hydrogen Sulfide is substantially completely removed from a gas stream in a two-stage operation. Hydrogen Sulfide is first partially oxidized to sulfur dioxide and the sulfur dioxide reacted with part of the remaining hydrogen sulfide while the hydrogen sulfide not so reacted is subsequently oxidized, thereby removing all of the hydrogen sulfide from the gas stream.Type: GrantFiled: June 5, 1995Date of Patent: March 24, 1998Assignees: The University of Toronto Innovations Foundation, Apollo Environmental Systems Corp.Inventors: James W. Smith, David Todd R. Ellenor, John N. Harbinson
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Patent number: 5705032Abstract: Black liquor is subjected to high shear to cause a breakdown of macromolecules contained therein and provide a reduction in viscosity, thereby improving the processability of the black liquor and enabling the solids content to be increased.Type: GrantFiled: February 23, 1996Date of Patent: January 6, 1998Assignee: Thor Technology CorporationInventors: John N. Harbinson, David Todd R. Ellenor
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Patent number: 5585005Abstract: Components, usually but not exclusively gaseous components, are removed in a liquid medium from gas streams and chemically converted into an insoluble phase or physically removed. Specifically, hydrogen sulfide may be removed from gas streams by oxidation in aqueous chelated transition metal solution in a agitated flotation cell. The same principal may be employed with other procedures in which a gaseous phase is dispersed in a liquid phase to effect an interaction between components present in such phases, for example, to treat or strip or react a component of the liquid phase.Type: GrantFiled: June 5, 1995Date of Patent: December 17, 1996Assignees: University of Toronto Innovations Foundation, Apollo Environmental Systems Corp.Inventors: James W. Smith, David T. R. Ellenor, John N. Harbinson
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Patent number: 5552061Abstract: Viscous liquids, such as liquid sulfur and bitumen asphalt are contacted with gases to strip absorbed gases from the viscous liquid and/or transfer gaseous components into the viscous liquid using a shrouded impeller combination immersed in the viscous liquid. The invention has particular application to the stripping of hydrogen sulfide and hydrogen polysulfides from liquid sulfur using an oxidizing gas.Type: GrantFiled: June 5, 1995Date of Patent: September 3, 1996Inventors: James W. Smith, David T. R. Ellenor, John N. Harbinson
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Patent number: 5527475Abstract: The parameters of a gas-liquid contact apparatus for the removal of a component of a gas stream in which an impeller-apertured shroud combination is immersed in a liquid phase to which the gas stream is fed at a gas flow rate of Q. The structural and operating parameters of the apparatus are quantified to provide a Shear Effectiveness Index (SEI) value of from about 1 to about 10 and an Effective Shear Index (ESI) value of from about 1 to about 2500.Type: GrantFiled: June 5, 1995Date of Patent: June 18, 1996Assignees: The University of Toronto Innovations Foundation, Appollo Environmental Systems Corp.Inventors: James W. Smith, David T. R. Ellenor, John N. Harbinson
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Patent number: 5520818Abstract: Components, usually but not exclusively gaseous components, are removed in a liquid medium from gas streams and chemically converted into an insoluble phase or physically removed. Specifically, hydrogen sulfide may be removed from gas streams by oxidation in aqueous chelated transition metal solution in a modified agitated flotation cell. The same principal may be employed in other procedures in which a gaseous phase is dispersed in a liquid phase to effect an interaction between components present in such phases. A gas-liquid contact apparatus, generally a combined chemical reactor and solid product separation device, comprising such modified agitated flotation cell is also described. In order to effect mass transfer and rapid reaction gas bubbles containing hydrogen sulfide and oxygen are formed by rotating an impeller at a blade tip velocity of at least about 350 in/sec. to achieve the required shear.Type: GrantFiled: November 29, 1994Date of Patent: May 28, 1996Assignees: The University of Toronto Innovations Foundation, Apollo Environmental Systems Corp.Inventors: James W. Smith, David T. R. Ellenor, John N. Harbinson
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Patent number: 5500135Abstract: Components, usually but not exclusively gaseous components, are removed in a liquid medium from gas streams and chemically converted into an insoluble phase or physically removed. Specifically, hydrogen sulfide may be removed from gas streams by oxidation in aqueous chelated transition metal solution in a modified agitated flotation cell. The same principal may be employed in other procedures in which a gaseous phase is dispersed in a liquid phase to effect an interaction between components present in such phases. A gas-liquid contact apparatus, generally a combined chemical reactor and solid product separation device, comprising such modified agitated flotation cell is also described. In order to effect mass transfer and rapid reaction gas bubbles containing hydrogen sulfide and oxygen are formed by rotating an impeller at a blade tip velocity of at least about 350 in/sec. to achieve the required shear.Type: GrantFiled: June 5, 1995Date of Patent: March 19, 1996Assignees: The University of Toronto Innovations Foundation, Apollo Environmental Systems Corp.Inventors: James W. Smith, David T. R. Ellenor, John N. Harbinson
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Patent number: 5500130Abstract: Components, usually but not exclusively gaseous components, are removed in a liquid medium from gas streams and chemically converted into an insoluble phase or physically removed. Specifically, hydrogen sulfide may be removed from gas streams by oxidation in aqueous chelated transition metal solution in a modified agitated flotation cell. The same principal may be employed in other procedures in which a gaseous phase is dispersed in a liquid phase to effect an interaction between components present in such phases. A gas-liquid contact apparatus, generally a combined chemical reactor and solid product separation device, comprising such modified agitated flotation cell is also described. In order to effect mass transfer and rapid reaction gas bubbles containing hydrogen sulfide and oxygen are formed by rotating an impeller at a blade tip velocity of at least about 350 in/sec. to achieve the required shear.Type: GrantFiled: June 5, 1995Date of Patent: March 19, 1996Assignee: The University of Toronto Innovations Foundation and Apollo Environmental Systems Corp.Inventors: James W. Smith, David T. R. Ellenor, John N. Harbinson
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Patent number: 5413765Abstract: Components, usually but not exclusively gaseous components, are removed in a liquid medium from gas streams and chemically converted into an insoluble phase or physically removed. Specifically, hydrogen sulfide may be removed from gas streams by oxidation in aqueous chelated transition metal solution in a modified agitated flotation cell. The same principle may be employed with other procedures in which a gaseous phase is dispersed in a liquid phase to effect an interaction between components present in such phases. A gas-liquid contact apparatus, generally a combined chemical reactor and solid product separation device, comprising such modified agitated flotation cell also is described. In order to effect efficient mass transfer and rapid reaction, gas bubbles containing hydrogen sulfide and oxygen are formed by rotating an impeller at a blade tip velocity of at least about 350 in/sec. to achieve the required shear.Type: GrantFiled: April 20, 1994Date of Patent: May 9, 1995Assignees: Apollo Environmental Systems Corp., University of Toronto Innovations FoundationInventors: James W. Smith, David T. R. Ellenor, John N. Harbinson
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Patent number: 5366698Abstract: Components, usually but not exclusively gaseous components, are removed in a liquid medium from gas streams and chemically converted into an insoluble phase or physically removed. Specifically, hydrogen sulfide may be removed from gas streams by oxidation in aqueous chelated transition metal solution in a modified agitated flotation cell. A gas-liquid contact apparatus, generally a combined chemical reactor and solid product separation device, comprising such modified agitated flotation cell also is described. In order to effect efficient mass transfer and rapid reaction, gas bubbles containing hydrogen sulfide and oxygen are formed by rotating an impeller at a blade tip velocity of at least about 350 in/sec. to achieve the required shear. To assist in the reaction, a surrounding shroud has a plurality of openings, generally of aspect ratio of approximately 1, of equal diameter and arranged in uniform pattern, such as to provide a gas flow therethrough less than about 0.02 lb/min/opening in the shroud.Type: GrantFiled: May 20, 1992Date of Patent: November 22, 1994Assignees: The University of Toronto, Innovations Foundation, Apollo Environmental Systems Inc.Inventors: James W. Smith, David T. R. Ellenor, John N. Harbinson
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Patent number: 5352421Abstract: Components, usually but not exclusively gaseous components, are removed in a liquid medium from gas streams and chemically converted into an insoluble phase or physically removed. Specifically, hydrogen sulfide may be removed from gas streams by oxidation in aqueous chelated transition metal solution in a modified agitated flotation cell. The same principle may be employed with other procedures in which a gaseous phase is dispersed in a liquid phase to effect an interaction between components present in such phases. A gas-liquid contact apparatus, generally a combined chemical reactor and solid product separation device, comprising such modified agitated flotation cell also is described. In order to effect efficient mass transfer and rapid reaction, gas bubbles containing hydrogen sulfide and oxygen are formed by rotating an impeller at a blade tip velocity of at least about 350 in/sec. to achieve the required shear.Type: GrantFiled: April 3, 1992Date of Patent: October 4, 1994Assignees: University of Toronto Innovations Foundation, Apollo Environmental Systems Corp.Inventors: James W. Smith, David T. R. Ellenor, John N. Harbinson
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Patent number: 5174973Abstract: Components, usually but not exclusively gaseous components, are removed in a liquid medium from gas streams and chemically converted into an insoluble phase or physically removed. Specifically, hydrogen sulfide may be removed from streams by oxidation in aqueous chelated transition metal solution in a modified agitated flotation cell. A gas-liquid contact apparatus, generally a combined chemical reactor and solid product separation device, comprising such modified agitated flotation cell also is described. In order to effect efficient mass transfer and rapid reaction, gas bubbles containing hydrogen sulfide and oxygen are formed by rotating an impeller at a blade tip velocity of at least about 350 in/sec. to achieve the required shear. To assist in the reaction, a surrounding shroud has a plurality of openings, generally of aspect ratio of approximately 1, of equal diameter and arranged in uniform pattern, such as to provide a gas flow therethrough less than about 0.02 lb/min/opening in the shroud.Type: GrantFiled: December 5, 1990Date of Patent: December 29, 1992Assignee: University of Toronto Innovations FoundationInventors: James W. Smith, David T. R. Ellenor, John N. Harbinson