Patents by Inventor Willard A. Fuller
Willard A. Fuller 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: 4288286Abstract: A cellulosic pulp and bleaching process is described. The process integrates two cycles, one is a digestor liquor cycle and the other is a sulfur cycle.The digestor liquor cycle comprises the steps of digesting a fibrous cellulosic feed to form a pulp, separating the pulp and bleaching it in at least one stage with chlorine dioxide, evaporating and burning the remaining waste liquor to form a smelt, dissolving the smelt to form a green liquor and utilizing the green liquor, after recausticizing, as at least a portion of the feed stock for the digestor step.The sulfur cycle of the present invention utilizes a portion of the green liquor of the digestor liquor cycle. The green liquor is carbonated to form a bicarbonate which is then stripped of H.sub.2 S. The H.sub.2 S is converted into H.sub.2 SO.sub.4 and utilized as a feed stock to a chlorine dioxide generator. The chlorine dioxide generator utilizes H.sub.2 SO.sub.4 as feed stock and produces Na.sub.2 SO.sub.4 as a by-product. The Na.sub.2 SO.sub.Type: GrantFiled: March 3, 1980Date of Patent: September 8, 1981Assignee: Hooker Chemicals & Plastics Corp.Inventor: Willard A. Fuller
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Patent number: 4283287Abstract: A flowable, non-caking aqueous slurry of sodium chlorate and sodium chloride having a weight ratio of sodium chloride to sodium chlorate between about 0.55 and 0.65, and, more preferably, about 0.59, is described. The slurry contains a solid phase essentially entirely of sodium chloride. The slurries contain from about 28 to about 33% by weight sodium chlorate, from about 15 to about 21% by weight sodium chloride, and from about 45 to about 58% by weight water.The slurries are produced by forming an initial aqueous solution of sodium chlorate and sodium chloride containing from about 28 to about 50% by weight sodium chlorate and from about 0 to about 14% by weight sodium chloride and subsequently adding sufficient sodium chloride to obtain a slurry containing from about 28 to about 33% by weight sodium chlorate, from about 15 to about 21% by weight sodium chloride, and from about 45 to about 58% by weight water.Type: GrantFiled: December 13, 1979Date of Patent: August 11, 1981Assignee: Hooker Chemicals & Plastics Corp.Inventors: Theodore H. Dexter, Willard A. Fuller
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Patent number: 4156713Abstract: There is provided an improved process for the production of chlorine dioxide wherein an alkali metal chlorate a reducing agent, and a mineral acid are reacted in a vessel, and the salt crystals are separated from the generator crystal slurry.Type: GrantFiled: September 23, 1977Date of Patent: May 29, 1979Assignee: Hooker Chemicals & Plastics Corp.Inventor: Willard A. Fuller
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Patent number: 4079123Abstract: An improved process is provided for the production of chlorine dioxide and chlorine wherein an alkali metal chlorate and a strong acid selected from the group sulfuric acid, hydrochloric acid, phosphoric acid, and mixtures thereof are circulated and reacted in an integral forced circulation crystallizing reaction evaporator comprising in vertical disposition:a. an upper crystallizing evaporation chamber having a substantially vertically disposed cylindrical partition which divides at least the lower portion of the reaction evaporation chamber into a first and second substantially concentric cylindrical sections;B. a heat exchange chamber, andC. a lower pump chamber, having a pump means disposed therein to provide forced circulation of fluids within the reaction evaporator.An aqueous slurry of alkali metal salt of the strong acid is withdrawn from the lower portion of the pump chamber and chlorine dioxide, chlorine, and water vapor are withdrawn from the evaporation chamber.Type: GrantFiled: December 30, 1976Date of Patent: March 14, 1978Assignee: Hooker Chemicals & Plastics CorporationInventors: Willard A. Fuller, Earl A. Schilt
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Patent number: 4049784Abstract: An improved process for the production of chlorine dioxide wherein an alkali metal chlorate and a mineral acid are reacted in a single vessel, and the resultant alkali metal salt is converted to a more desirable salt in a metathesis column by reaction with an appropriate acid or an alkaline earth or alkali metal, chloride.Type: GrantFiled: May 24, 1976Date of Patent: September 20, 1977Assignee: Hooker Chemicals & Plastics CorporationInventor: Willard A. Fuller
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Patent number: 4049785Abstract: An improved process for the production of chlorine dioxide wherein an alkali metal chlorate and a mineral acid are reacted in a single vessel, and the resultant alkali metal salt is converted to a more desirable salt in a metathesis column by reaction with an appropriate acid or an alkaline earth or alkali metal, chloride.Type: GrantFiled: May 24, 1976Date of Patent: September 20, 1977Assignee: Hooker Chemicals & Plastics CorporationInventor: Willard A. Fuller
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Patent number: 4045542Abstract: There is provided an improved process for the production of chlorine dioxide wherein an alkali metal chlorate, and hydrochloric acid are reacted in a vessel, and the salt crystals are separated from the generator crystal slurry.Type: GrantFiled: August 6, 1976Date of Patent: August 30, 1977Assignee: Hooker Chemicals & Plastics CorporationInventor: Willard A. Fuller
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Patent number: 4007082Abstract: An improved process for the treatment of precipitator catch wherein the catch is slurried with water, sufficient carbon dioxide is added to convert the sodium carbonate present to sodium bicarbonate, and sodium chloride is separated from the sodium sulfate and sodium bicarbonate.Type: GrantFiled: August 15, 1975Date of Patent: February 8, 1977Assignee: Hooker Chemicals & Plastics CorporationInventor: Willard A. Fuller
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Patent number: 4000034Abstract: An improved process for the treatment, separation, and utilization of precipitator catch wherein treated precipitation catch is separated by countercurrent washing in a column.Type: GrantFiled: August 15, 1975Date of Patent: December 28, 1976Assignee: Hooker Chemicals & Plastics CorporationInventors: Harold deVere Partridge, Willard A. Fuller
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Patent number: 3996097Abstract: An improved process for the treatment of precipitator catch wherein the catch is slurried with water, sufficient carbon dioxide is added to convert the sodium carbonate present to sodium bicarbonate, and sodium chloride is separated from the sodium sulfate and sodium bicarbonate.Type: GrantFiled: August 15, 1975Date of Patent: December 7, 1976Assignee: Hooker Chemicals & Plastics CorporationInventor: Willard A. Fuller
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Patent number: 3976758Abstract: An improved process for the production of chlorine dioxide wherein an alkali metal chlorate and sulfuric acid are reacted in a single vessel, and the resultant alkali metal sulfate converted to alkali metal chloride in a metathesis column by reaction with hydrochloric acid.Type: GrantFiled: March 7, 1975Date of Patent: August 24, 1976Assignee: Hooker Chemicals & Plastics CorporationInventor: Willard A. Fuller
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Patent number: 3975505Abstract: There is provided an improved process for the production of chlorine dioxide wherein an alkali metal chlorate, and a mineral acid are reacted in a single vessel, and the salt crystals separated from the generator crystal slurry.Type: GrantFiled: December 13, 1974Date of Patent: August 17, 1976Assignee: Hooker Chemicals & Plastics CorporationInventor: Willard A. Fuller
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Patent number: 3974266Abstract: An improved process for the production of chlorine dioxide wherein an alkali metal chlorate and sulfuric acid are reacted in a single vessel, and the resultant alkali metal sulfate converted to alkali metal chloride in a metathesis column by reaction with hydrochloric acid.Type: GrantFiled: October 7, 1975Date of Patent: August 10, 1976Assignee: Hooker Chemicals & Plastics CorporationInventor: Willard A. Fuller