Patents by Inventor Budd L. Duncan
Budd L. Duncan 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: 5354435Abstract: The novel process of the invention produces chlorine dioxide by feeding an aqueous solution of chloric acid to a chlorine dioxide generator. The aqueous solution of chloric acid is reacted with a reducing agent in the chlorine dioxide generator to produce chlorine dioxide and a spent chloric acid solution containing metallic impurities. A portion of the spent chloric acid solution containing metallic impurities is reacted with a basic compound selected from the group consisting of alkali metal hydroxides, and alkali metal carbonates in a neutralizing zone to form a precipitate of the metallic impurities and an alkali metal chlorate solution. The precipitate of the metallic impurities is separated from the alkali metal chlorate solution and the alkali metal chlorate solution fed to an ion exchange compartment of an electrolytic cell having an anode compartment, a cathode compartment, and at least one ion exchange compartment between the anode compartment and the cathode compartment.Type: GrantFiled: December 31, 1992Date of Patent: October 11, 1994Assignee: Olin CorporationInventors: Jerry J. Kaczur, David W. Cawlfield, Kenneth E. Woodard, Jr., Budd L. Duncan, Sudhir K. Mendiratta
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Patent number: 5348683Abstract: An aqueous solution of chloric acid and alkali metal chlorate is produced in an electrolytic cell having an anode compartment, a cathode compartment, and at least one ion exchange compartment between the anode compartment and the cathode compartment.Type: GrantFiled: April 5, 1993Date of Patent: September 20, 1994Assignee: Olin CorporationInventors: Jerry J. Kaczur, David W. Cawlfield, Kenneth E. Woodard, Jr., Budd L. Duncan
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Patent number: 5328673Abstract: A process for removing NO.sub.x oxides and SO.sub.x oxides from gaseous streams contacts the gaseous stream with an aqueous solution of chloric acid. The process of the invention removes sulfur oxides and nitrogen oxides from waste gas streams without producing inorganic salts. In addition, the use of chloric acid provides improved oxidation of NO and SO.sub.2. The process can be operated to treat "dirty" gas streams containing particulates and compounds which may poison or contaminate NO.sub.x removal systems employing catalysts.Type: GrantFiled: November 23, 1992Date of Patent: July 12, 1994Assignee: Olin CorporationInventors: Jerry J. Kaczur, Steven A. Iacoviello, Budd L. Duncan
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Patent number: 5296108Abstract: An aqueous solution of chloric acid and alkali metal chlorate is produced in an electrolytic cell having an anode compartment, a cathode compartment, and at least one ion exchange compartment between the anode compartment and the cathode compartment. The process comprises feeding an aqueous solution of an alkali metal chlorate to the ion exchange compartment, electrolyzing an anolyte in the anode compartment to generate hydrogen ions, passing the hydrogen ions from the anode compartment through a cation exchange membrane into the ion exchange compartment to displace alkali metal ions and produce an aqueous solution of chloric acid and alkali metal chlorate, passing alkali metal ions from the ion exchange compartment into the cathode compartment, removing the aqueous solution of chloric acid and alkali metal chlorate from the ion exchange compartment, and reacting the aqueous solution of chloric acid and alkali metal chlorate with a strong acid having a dissociation constant of 1.times.10.sup.Type: GrantFiled: July 24, 1992Date of Patent: March 22, 1994Assignee: Olin CorporationInventors: Jerry J. Kaczur, David W. Cawlfield, Kenneth E. Woodard, Jr., Budd L. Duncan
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Patent number: 5258105Abstract: An aqueous solution of chloric acid and alkali metal chlorate is produced in an electrolytic cell having an anode compartment, a cathode compartment, and at least one ion exchange compartment between the anode compartment and the cathode compartment.Type: GrantFiled: October 31, 1991Date of Patent: November 2, 1993Assignee: Olin CorporationInventors: Jerry J. Kaczur, David W. Cawlfield, Kenneth E. Woodard, Jr., Budd L. Duncan
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Patent number: 5242553Abstract: An aqueous solution of chloric acid and alkali metal chlorate is produced in an electrolytic cell having an anode compartment, a cathode compartment, and at least one ion exchange compartment between the anode compartment and the cathode compartment.Type: GrantFiled: July 21, 1992Date of Patent: September 7, 1993Assignee: Olin CorporationInventors: Jerry J. Kaczur, David W. Cawlfield, Kenneth E. Woodard, Jr., Budd L. Duncan
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Patent number: 5223103Abstract: A process for producing chlorine dioxide from an aqueous solution of chloric acid and alkali metal chlorate which is prouced in a electrolytic cell having an anode compartment, a cathode compartment and at least one ion exchange compartment between the anode and cathode compartments. The process includes the steps of feeding an aqueous solution of an alkali metal chlorate to the ion exchange compartment, electrolyzing an anolyte in the anode compartment to generate hydrogen ions, passing the hydrogen ions from the anode compartment through a cation exchange membrane into the ion exchange compartment to displace alkali metal ions and produce an aqueous solution of chloric acid and alkalimetal chlorate, passing the alkali metal ions from the ion exchange compartment into the cathode compartment, and finally passing the aqueous solution of chloric acid and alkali metal chlorate to a chlorate dioxide generator.Type: GrantFiled: September 24, 1991Date of Patent: June 29, 1993Assignee: Olin CorporationInventors: Jerry J. Kazcur, David W. Cawlfield, Kenneth E. Woodard, Jr., Budd L. Duncan
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Patent number: 5194238Abstract: A process for producing sodium hypochlorite slurries admixes a hypochlorous acid solution having a concentration of 35 percent or greater by weight of HOCl with sodium hydroxide at a temperature below about 25.degree. C. The reaction produces a slurry of sodium hypochlorite pentahydrate in an aqueous solution of sodium hypochlorite where the sodium hypochlorite is present in a concentration of at least 35 percent by weight of NaOCl. The sodium hypochlorite slurries have improved stability and greatly reduced amounts of sodium chloride. The process for produces high strength sodium hypochlorite compositions of high purity having improved yields and reduced product decomposition.Type: GrantFiled: April 8, 1992Date of Patent: March 16, 1993Assignee: Olin CorporationInventors: Budd L. Duncan, Richard C. Ness
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Patent number: 5160416Abstract: An electrolytic filter press membrane cell and a method of operating the cell to produce concentrated perchloric acid are disclosed. The cell employs concentrated hypochlorous acid as the anolyte and operates with a two-stage single oxidation process at high current density.Type: GrantFiled: March 22, 1991Date of Patent: November 3, 1992Assignee: Olin CorporationInventors: David W. Cawlfield, Ronald L. Dotson, Budd L. Duncan, Sudhir K. Mendiratta, Kenneth E. Woodard, Jr.
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Patent number: 5152915Abstract: A process for producing dichlorine monoxide which includes: feeding an aqueous solution of hypochlorous acid containing at least 20% by weight of HOCl to a reaction vessel; maintaining the temperature of the aqueous solution of hypochlorous acid in the range of from about -10.degree. to about +40.degree. C.; passing an inert gas through the aqueous solution of hypochlorous acid to produce a gaseous mixture comprising dichlorine monoxide, chlorine and inert gas; an contacting the gaseous mixture with dry ice to provide a solid phase of dry ice and dichlorine monoxide.Type: GrantFiled: September 3, 1991Date of Patent: October 6, 1992Assignee: Olin CorporationInventors: Richard W. Ralston, Jr., Budd L. Duncan, Ronald L. Dotson
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Patent number: 5120452Abstract: A process for treating wastewater the improvement which comprises admixing with the wastewater at least 0.5 percent by weight of a solution consisting of hypochlorous acid having a pH of less than 3 to prepare disinfected wastewater having substantially no available chlorine residual.The novel process of the present invention provides rapid, intimate mixing of the highly pure, highly acidic hypochlorous acid solution with the wastewater stream to disinfect wastewater bodies while minimizing unwanted side effects. The process eliminates the need for storing and handling pressurized gaseous or liquid chlorine.Type: GrantFiled: July 26, 1990Date of Patent: June 9, 1992Assignee: Olin CorporationInventors: Richard C. Ness, Budd L. Duncan, Sudhir K. Mendiratta, Donald R. Leonard
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Patent number: 5118426Abstract: A process for sanitizing impotable water the improvement which comprises admixing with the impotable water a solution consisting of hypochlorous acid containing at least 0.5 percent by weight of HOCl and having a pH of less than 3 to prepare potable water having an available chlorine residual.Type: GrantFiled: July 26, 1990Date of Patent: June 2, 1992Assignee: Olin CorporationInventors: Budd L. Duncan, Richard C. Ness, Sudhir K. Mendiratta, Donald R. Leonard
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Patent number: 5108560Abstract: A process for producing chloric acid in an electrolytic cell having an anode and a cathode which includes feeding an aqueous solution of hypochlorous acid to the electrolytic cell, and electrolyzing the aqueous solution of hypochlorous solution to produce a chloric acid solution. Using the process of the invention, chloric acid can be produced efficiently at substantially reduced production costs using a process which can be operated commercially. In addition, the chloric acid solutions produced are of high purity and are stable at ambient conditions.Type: GrantFiled: September 13, 1990Date of Patent: April 28, 1992Assignee: Olin CorporationInventors: David W. Cawlfield, Ronald L. Dotson, Sudhir K. Mendiratta, Budd L. Duncan, Kenneth E. Woodard, Jr.
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Patent number: 5102648Abstract: A process for producing lithium hypochlorite which admixes an aqueous hypochlorous acid solution, having a concentration of 35 percent or greater by weight of HOCl, with an aqueous slurry of lithium hydroxide at a temperature in the range of from about 0.degree. to about 20.degree. to produce a solution of substantially pure lithium hypochlorite. The lithium hypochlorite solutions produced can be dried directly or concentrated by cooling. The solid lithium hypochlorite produced is a highly pure source of available chlorine.Type: GrantFiled: February 25, 1991Date of Patent: April 7, 1992Assignee: Olin CorporationInventors: Budd L. Duncan, Larry D. Carpenter, Leslie R. Osborne, William T. Wooden
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Patent number: 5089095Abstract: A process for producing chlorine dioxide by oxidizing a hypochlorous acid solution to produce a chloric acid solution, and, electrolyzing the chloric acid solution to produce chlorine dioxide.The novel process of the present invention provides a commercially viable process for producing the chloric acid and eliminates the formation of an acidic salt solution in the production of chlorine dioxide which requires disposal. Further, the process permits a reduction in the amount of acid required in the generation of chlorine dioxide.Type: GrantFiled: March 30, 1990Date of Patent: February 18, 1992Assignee: Olin CorporationInventors: David W. Cawlfield, Jerry J. Kaczur, Budd L. Duncan, Sudhir K. Mendiratta, Ronald L. Dotson, Kenneth E. Woodard, Jr.
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Patent number: 5084148Abstract: A process for electrolytically producing an aqueous solution of chloric acid and alkali metal chlorate in an electrolytic cell having an anode compartment, a cathode compartment, and at least one ion exchange compartment between the anode compartment and the cathode compartment. The process includes the steps of feeding an aqueous solution of an alkali metal chlorate to the ion exchange compartment, electrolyzing an anolyte in the anode compartment to generate hydrogen ions, passing the hydrogen ions from the anode compartment through a cation exchange membrane into the ion exchange compartment to displace alkali metal ions and produce an aqueous solution of chloric acid and alkali metal chlorate, and passing alkali metal ions from the ion exchange compartment into the cathode compartment.Type: GrantFiled: February 6, 1990Date of Patent: January 28, 1992Assignee: Olin CorporationInventors: Jerry J. Kazcur, David W. Cawlfield, Kenneth E. Woodard, Jr., Budd L. Duncan
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Patent number: 5068408Abstract: A process for oxidizing an organic compound selected from an aliphatic, aromatic, aliphatic/aromatic, cycloaliphatic and heterocyclic alcohol, thiol, sulfide, aldehyde, amine, amide, ketone, acid, ether, ester, and organic compounds containing an activated carbon-carbon double bond, which process comprises contacting said organic compound dissolved in an organic solvent with a hypochlorous acid solution.Type: GrantFiled: January 31, 1990Date of Patent: November 26, 1991Assignee: Olin CorporationInventors: Robert J. Raynor, Budd L. Duncan
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Patent number: 5055285Abstract: A process for producing potassium hypochlorite solutions by admixing a hypochlorous acid solution having a concentration of 35 percent or greater by weight of HOCl with an aqueous slurry of potassium hydroxide containing 35 percent by weight or greater of KOH at a temperature below about 45.degree. C. The potassium hypochlorite solution produced has a concentration of at least 25 percent to about 60 percent by weight of KOCl.Type: GrantFiled: February 1, 1990Date of Patent: October 8, 1991Assignee: Olin CorporationInventors: Budd L. Duncan, William O. Flowers
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Patent number: 5028408Abstract: A process for producing lithium hypochlorite comprises admixing an aqueous hypochlorous acid solution having a concentration of 35 percent of greater by weight of HOCl with an aqueous slurry of lithium hydroxide at a temperature in the range of from about 0.degree. to about 20.degree. C. to produce a solution of lithium hypochlorite. The solution is concentrated by evaporation at temperatures in the range of from about 30.degree. to about 60.degree. C. and at subatmospheric pressures to form a paste of lithium hypochlorite. After separating the paste into a cake of lithium hypochlorite and a mother liquor, a potassium compound is admixed with the mother liquor. The process produces a highly pure solid lithium hypochlorite product having a concentration of at least 80 percent available chlorine.Type: GrantFiled: March 2, 1990Date of Patent: July 2, 1991Assignee: Olin CorporationInventors: Budd L. Duncan, Larry D. Carpenter, Leslie R. Osborne
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Patent number: 4468377Abstract: Calcium hypochlorite is produced by admixing a slurry of lime containing soluble impurities with a saturated calcium hypochlorite solution in a crystallizing zone. An impure slurry of coarse and small dibasic calcium hypochlorite crystals and fine insolubles in a mother liquor is formed and fed to the intermediate section of a separation zone. An aqueous sodium chloride elutriant is fed to the lower section of the separation zone to separate a slurry of fine insolubles, which is conveyed in the elutriant to the upper section of the separation zone, and small crystals of dibasic calcium hypochlorite, which can be recycled to the crystallizing zone or destroyed by chlorination, from the dibasic calcium hypochlorite solution. A slurry of purified coarse dibasic calcium hypochlorite crystals in the elutriant is removed from the lower section of the separation zone at a rate controlled to maintain a rising velocity in the lower section of the separation zone of from about 0.5 to about 7 centimeters per minute.Type: GrantFiled: March 7, 1983Date of Patent: August 28, 1984Assignee: Olin CorporationInventors: Walter J. Sakowski, Manohar C. Bajaj, Budd L. Duncan