Patents by Inventor Dennis D. Delaney
Dennis D. Delaney 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: 5290429Abstract: An aromatic saturation process is catalyzed under relatively low pressure conditions in the presence of a halide-containing compound. Additive fluoride-containing compounds can be injected into the feedstock just prior to contact of the feedstock with either a fluoride or nonfluoride-containing catalyst. Also, a catalyst utilized in the invention contains Group VIB and/or Group VIII hydrogenation metals, phosphorus and fluoride supported on an amorphous, porous refractory oxide and has a narrow pore size distribution.Type: GrantFiled: November 25, 1992Date of Patent: March 1, 1994Assignee: Union Oil Company of CaliforniaInventors: Dennis D. Delaney, John W. Ward
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Patent number: 5277794Abstract: A catalyst containing nickel, tungsten and phosphorus supported on an amorphous, porous refractory oxide having a narrow pore size distribution is utilized for converting hydrocarbon-containing feedstocks. The catalyst is particularly effective for promoting an aromatic saturation reaction.Type: GrantFiled: May 14, 1992Date of Patent: January 11, 1994Assignee: Union Oil Company of CaliforniaInventors: Dennis D. Delaney, John W. Ward
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Patent number: 5135902Abstract: A catalyst containing nickel, tungsten and phosphorus supported on an amorphous, porous refractory oxide having a narrow pore size distribution is utilized for converting hydrocarbon-containing feedstocks. The catalyst is particularly effective for promoting an aromatic saturation reaction.Type: GrantFiled: May 25, 1990Date of Patent: August 4, 1992Assignee: Union Oil Company of CaliforniaInventors: Dennis D. Delaney, John W. Ward
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Patent number: 5102635Abstract: The long term stability of process solutions used in H.sub.2 S-to-sulfur absorption/oxidation process, wherein the incoming hydrogen sulfide-containing gas stream is contaminated with hydrocarbons and/or organic oxygenated compounds and the process is generating an excessive amount of thiosulfate in the process solution, is improved by a method comprising contacting the gas stream and/or the process solution with charcoal to remove both the contamination and at least a portion of the thiosulfate therefrom.Type: GrantFiled: September 14, 1988Date of Patent: April 7, 1992Assignee: Union Oil Company of CaliforniaInventors: Dennis D. Delaney, Hugh W. Gowdy
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Patent number: 5051386Abstract: Catalysts containing a dispersion of silica-alumina in alumina, either alone or with phosphorus components supported thereon, are employed to promote hydrocarbon conversion reactions, particularly oligomerization reactions. The dispersion preferably contains a silica-alumina cogel or copolymer dispersed in an alumina matrix. Such catalysts have strong integrity and are easily unloaded from reactor vessels.Type: GrantFiled: May 23, 1990Date of Patent: September 24, 1991Assignee: Union Oil Company of CaliforniaInventors: John W. Ward, Dennis D. Delaney
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Patent number: 5030780Abstract: A catalyst typically containing nickel and tungsten on a support containing (a) a dispersion of silica-alumina in an alumina matrix and (b) an ultra-hydrophobic zeolite is utilized for converting relatively low boiling hydrocarbon-containing feedstocks. The catalyst is particularly effective for promoting aromatic saturation reactions, particularly in diesel fuel feedstocks.Type: GrantFiled: July 26, 1990Date of Patent: July 9, 1991Assignee: Union Oil Company of CaliforniaInventors: John W. Ward, Dennis D. Delaney
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Patent number: 4909945Abstract: A method is provided for removing elemental sulfur particles from a hydrogen sulfide removal process which employs a regenerable, aqueous washing solution capable of absorbing hydrogen sulfide from an industrial gas stream and converting that hydrogen sulfide to elemental sulfur. The washing solution of such a process is contacted with bubbles of an oxygen-containing gas while in the presence of an effective amount of a cationic sulfur particle-size increasing polymeric flocculent to form a sulfur-containing froth from which the sulfur is recovered.Type: GrantFiled: July 29, 1988Date of Patent: March 20, 1990Assignee: Union Oil Company of CaliforniaInventor: Dennis D. Delaney
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Patent number: 4892723Abstract: The long term stability of process solutions used in H.sub.2 S-to-sulfur absorption/oxidation process, wherein the incoming hydrogen sulfide-containing gas stream is contaminated with hydrocarbons and/or organic oxygenated compounds and the process is generating an excessive amount of thiosulfate in the process solution, is improved by a method comprising contacting the gas stream and/or the process solution with charcoal to remove both the contamination and at least a portion of the thiosulfate therefrom.Type: GrantFiled: September 12, 1988Date of Patent: January 9, 1990Assignee: Union Oil Company of CaliforniaInventors: Dennis D. Delaney, Hugh W. Gowdy
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Patent number: 4883601Abstract: A process for purifying an aqueous, hydrogen sulfide-scrubbing solution which contains a water-soluble transition metal component, such as a vanadium component or an iron component, in addition to at least one water-soluble organic compound, such as an aromatic sulfonate or an alkanolamine, in which the scrubbing solution is mixed with particles of a spent solid catalyst containing molybdenum and aluminum and a basic aqueous solution, preferably a solution comprising sodium aluminate, to form a slurry which is subsequently contacted with an oxygen-containing gas under conditions such that the molybdenum in the catalyst is solubilized. Thereafter, molybdenum is precipitated from the solution along with the water-soluble transition metal component and a wastewater substantially free of the transition metal component and the organic compound originally present in the scrubbing solution is recovered.Type: GrantFiled: August 30, 1988Date of Patent: November 28, 1989Assignee: Union Oil Company of CaliforniaInventors: Jeffery W. Koepke, Dennis D. Delaney
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Patent number: 4773988Abstract: Arsenic is removed from shale oil by the addition of one or more basic materials to the shale oil.Type: GrantFiled: September 23, 1986Date of Patent: September 27, 1988Assignee: Union Oil Company of CaliforniaInventor: Dennis D. Delaney
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Patent number: 4752379Abstract: Arsenic is removed from shale oil by the addition of oxidizing agents.Type: GrantFiled: September 23, 1986Date of Patent: June 21, 1988Assignee: Union Oil Company of CaliforniaInventor: Dennis D. Delaney
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Patent number: 4752380Abstract: Arsenic is removed from shale oil by the addition of acidic chloride compounds.Type: GrantFiled: September 23, 1986Date of Patent: June 21, 1988Assignee: Union Oil Company of CaliforniaInventor: Dennis D. Delaney
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Patent number: 4532117Abstract: A method, applicable to hydrogen sulfide removal systems which employ a regenerable aqueous washing solution capable of absorbing hydrogen sulfide and converting that hydrogen sulfide to elemental sulfur, is provided for reconditioning such systems after they have become contaminated with sulfur-feeding bacteria and/or for maintaining such systems substantially free of such bacteria. In the method of the invention, the aqueous washing solution is contacted with an aliphatic dialdehyde.Type: GrantFiled: December 20, 1983Date of Patent: July 30, 1985Assignee: Union Oil Company of CaliforniaInventor: Dennis D. Delaney
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Patent number: 4508537Abstract: A method is provided for removing elemental sulfur particles from a hydrogen sulfide removal process which employs a regenerable, aqueous washing solution capable of absorbing hydrogen sulfide from an industrial gas stream and converting that hydrogen sulfide to elemental sulfur. The washing solution of such a process is contacted with bubbles of an oxygen-containing gas while in the presence of controlled concentrations of a selected hydrocarbon and a selected surfactant.Type: GrantFiled: December 27, 1982Date of Patent: April 2, 1985Assignee: Union Oil Company of CaliforniaInventors: Donald M. Fenton, Dennis D. Delaney, F. Emmett Bingham
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Patent number: 4496534Abstract: A method is provided for reconditioning a hydrogen sulfide removal system, such as a Stretford process system in which elemental sulfur is formed, after the system has become contaminated with sulfur-feeding bacteria to an extent that operation thereof is substantially impaired. The method includes adding a bactericide to the washing solution employed in the system to destroy the bacteria and adding a surfactant to the solution to remove dead bacteria from the surfaces of particulate sulfur formed in the system so that the particles can agglomerate in the intended manner to enable sulfur removal from the solution.Type: GrantFiled: December 6, 1982Date of Patent: January 29, 1985Assignee: Union Oil Company of CaliforniaInventors: Dennis D. Delaney, Donald M. Fenton
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Patent number: 4414104Abstract: A thiocyanate compound is added to metals-containing hydrocarbon oils under reaction conditions, and a product hydrocarbon of reduced metals content is separated from a metals-containing solid.Type: GrantFiled: May 4, 1982Date of Patent: November 8, 1983Assignee: Union Oil Company of CaliforniaInventors: Dennis D. Delaney, Donald M. Fenton
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Patent number: 4405825Abstract: A composition and method for reducing the pour point of syncrude, such as those from oil shale, tar sands, oil-impregnated diatomite ore, or coal, by adding thereto an effective amount of a nitrogen-containing compound such as ammonia, ammonium hydroxide or a primary, secondary or tertiary water-soluble aliphatic amine or alkanolamine having one or more alkyl groups containing 1 to 4 carbon atoms.Type: GrantFiled: October 30, 1981Date of Patent: September 20, 1983Assignee: Union Oil Company of CaliforniaInventors: Donald M. Fenton, Dennis D. Delaney, Frank W. Stechmeyer
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Patent number: 4393037Abstract: A method is provided for reconditioning a hydrogen sulfide removal system, such as a Stretford process system in which elemental sulfur is formed, after the system has become contaminated with sulfur-feeding bacteria to an extent that operation thereof is substantially impaired. The method includes adding a bactericide to the washing solution employed in the system to destroy the bacteria and adding a non-ionic surfactant to the solution to remove dead bacteria from the surfaces of particulate sulfur formed in the system so that the particles can agglomerate in the intended manner to enable sulfur removal from the solution.Type: GrantFiled: December 16, 1981Date of Patent: July 12, 1983Assignee: Union Oil Company of CaliforniaInventors: Dennis D. Delaney, Donald M. Fenton