Patents by Inventor Patrick J. Denny
Patrick J. Denny 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: 4996181Abstract: Agglomerates containing oxide, hydroxides, carbonates and/or basic carbonates of copper, and zinc and/or another element such as aluminium or silicon, are useful for removal of sulphur compounds from fluids, especially under non-reducing conditions. The agglomerates have surface area above 80 m.sup.2.g.sup.-1 and a calcined density below 1.5 g.cm.sup.-3. After ignition, the cupric oxide plus zinc oxide (if any) content of the agglomerates is at least 70% w/w. The proportion of the copper compound is such that the copper atoms constitute 30-97% of the total of the copper, zinc, and said other element atoms in the agglomerates.Type: GrantFiled: August 24, 1989Date of Patent: February 26, 1991Assignee: Imperial Chemical Industries PLCInventors: Patrick J. Denny, Peter Wood
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Patent number: 4983365Abstract: The absorption capacity of a desulphurizing absorbent bed is increased by temporarily increasing the temperature of the absorbent bed by at least 50.degree. C. from the normal operating temperature to a maximum temperature not in an excess of 500.degree. C.Type: GrantFiled: November 2, 1989Date of Patent: January 8, 1991Assignee: Imperial Chemical Industries PLCInventors: Patrick J. Denny, Peter J. H. Carnell
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Patent number: 4983367Abstract: Agglomerates containing oxides, hydroxides, carbonates and/or basic carbonates of copper, and zinc and/or another element such as aluminium or silicon, are useful for removal of sulphur compounds from fluids, especially under non-reducing conditions. The agglomerates have surface area above 80 m.sup.2.g.sup.-1 and a calcined density below 1.5 g.cm.sup.-3. After ignition, the cupric oxide plus zinc oxide (if any) content of the agglomerates is at least 70% w/w. The proporation of the copper compound is such that the copper atoms constitute 30-97% of the total of the copper, zinc, and said other element atoms in the agglomerates.Type: GrantFiled: August 24, 1989Date of Patent: January 8, 1991Assignee: Imperial Chemical Industries PLCInventors: Patrick J. Denny, Peter Wood
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Patent number: 4978439Abstract: Desulphurization process for feedstocks in which the sulphur compounds contained therein are first separated into a concentrate stream which is then hydro-desulphurized, and the resulting hydrogen suphide removed using conventional sulphur removal techniques. The initial separation is preferably effected using membrane separation or temperature swing absorption processes.Type: GrantFiled: February 17, 1989Date of Patent: December 18, 1990Assignee: Imperial Chemical Industries PLCInventors: Peter J. H. Carnell, Patrick J. Denny
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Patent number: 4946660Abstract: Low temperature desulphurization process using a bed of zinc oxide-containing absorbent in which the water content within the bed is temporarily increased, thereby increasing the sulphur absorption capacity of the absorbent.Type: GrantFiled: March 1, 1989Date of Patent: August 7, 1990Assignee: Imperial Chemical Industries PLCInventors: Patrick J. Denny, David G. Shipley
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Patent number: 4894210Abstract: Desulphurization of saturated or near saturated gaseous hydrocarbon stream is effected using a bed of a particulate adsorbent comprising zinc oxide. Condensation of the higher boiling components is avoided by heating the raw gas to a temperature at least 10.degree. C. above its dew point. This heating is effected by heat exchange with the heated desulphurized gas and by heat exchange with the combustion products of a minor part stream taken from the raw gas and/or from the desulphurized product gas stream. The absorbent particles preferably have a high BET surface area and pore volume.Type: GrantFiled: June 20, 1986Date of Patent: January 16, 1990Assignee: Imperial Chemical Industries plcInventors: Patrick J. Denny, Alan E. Thomas, Peter J. Carnell
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Patent number: 4888157Abstract: Carbon dioxide containing gas streams are desulphurised at below 100.degree. C. using high surface area, high porosity, agglomerates containing copper oxide, and zinc oxide and/or an oxide of another element such as aluminium.Type: GrantFiled: June 15, 1988Date of Patent: December 19, 1989Assignee: Imperial Chemical Industries PLCInventors: Peter J. H. Carnell, Patrick J. Denny
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Patent number: 4871710Abstract: Agglomerates containing oxides, hydroxides, carbonates and/or basic carbonates of copper, and zinc and/or another element such as aluminum or silicon, are useful for removal of sulphur compounds from fluids, especially under non-reducing conditions. The agglomerates have surface area above 80 m.sup.2.g.sup.-1 and a calcined density below 1.5 g.cm.sup.-3. After ignition, the cupric oxide plus zinc oxide (if any) content of the agglomerates is at least 70% w/w. The proportion of the copper compound is such that the copper atoms constitute 30-97% of the total of the copper, zinc, and said other element atoms in the agglomerates.Type: GrantFiled: April 16, 1987Date of Patent: October 3, 1989Assignee: Imperial Chemical Industries PLCInventors: Patrick J. Denny, Peter Wood
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Patent number: 4861566Abstract: Fluid streams, particularly natural gas, are desulphurized by passage over a bed of a particulate absorbent containing zinc oxide at below 120.degree. C. In order to increase the absorption capacity of the absorbent, the water and temperature of the fluid stream is controlled so that the stream both entering and leaving the absorbent bed has a degree of saturation of at least 30%, but does not contain a separate liquid aqueous phase.Type: GrantFiled: November 30, 1987Date of Patent: August 29, 1989Assignee: Imperial Chemical Industries PLCInventor: Patrick J. Denny
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Patent number: 4717552Abstract: Desulphurization of natural gas is effected using a bed of particulate adsorbent comprising zinc oxide at below 30.degree. C. before molecular sieve drying of the gas. The absorbent particles preferably have a high BET surface area and pore volume.Type: GrantFiled: July 25, 1986Date of Patent: January 5, 1988Assignee: Imperial Chemical Industries PLCInventors: Peter J. H. Carnell, Patrick J. Denny
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Patent number: 4177168Abstract: A catalyst bed comprising synthetic inorganic polycrystalline fibres, especially alumina or zirconia, having a BET surface area of 5 to 200 m.sup.2 /g and a bulk density of 0.01 to 0.2 g/cc used to support 0.01% to 0.5% by weight of a Group 8 metal, e.g., platinum; used for the catalytic oxidation of a vaporous fuel such as butane in devices such as flameless heaters for use in caravans, hatcheries, greenhouses, etc.Type: GrantFiled: October 31, 1974Date of Patent: December 4, 1979Assignee: Imperial Chemical Industries LimitedInventors: Patrick J. Denny, David L. Harrison, Martyn H. Stacey