Ammonia Patents (Class 585/861)
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Patent number: 6476284Abstract: An efficient dehalogenation can be carried out by a method which comprises treating an organic compound containing a compound of halogen, such as fluorine or chlorine, as an impurity and having non-conjugated carbon-carbon double bonds, for example, butene polymer produced with a boron trifluoride catalyst, with an inorganic solid treating agent containing aluminum atoms. When the dehalogenation is conducted in the presence of a basic substance such as ammonia or an amine, it can be continued over long while inhibiting the isomerization of the non-conjugated carbon-carbon double bonds.Type: GrantFiled: October 19, 2000Date of Patent: November 5, 2002Assignee: Nippon Petrochemicals Company, LimitedInventors: Koichi Ohashi, Tsutomu Takashima, Teruhisa Kuroki, Koji Fujimura, Yuichi Tokumoto
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Patent number: 6395953Abstract: Processes for producing a purified conjugated diene comprise feeding a petroleum fraction containing the conjugated diene to an extractive distillation column, feeding an extraction solvent to the extractive distillation column, and extractive-distilling the conjugated diene from the petroleum fraction containing the conjugated diene in the extractive distillation column. The extraction solvent comprises an amide compound, and a heterocyclic aldehyde, aromatic nitro compound or aromatic aldehyde is contained in the extraction solvent within a range of 0.01 to 10 wt. % based on the weight of the extractive solvent. An oxygen concentration in a gas phase of a distillate discharged from the top of the extraction distillation column is controlled to 10 ppm or lower.Type: GrantFiled: August 24, 1999Date of Patent: May 28, 2002Assignee: Nippon Zeon Co., Ltd.Inventors: Takaki Koga, Nobumasa Shimomura, Masanobu Kanauchi
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Patent number: 6114593Abstract: A system and/or process for decreasing the level of at least one organic fluoride present in a hydrocarbon mixture by first passing the hydrocarbon mixture to an eductor and educting into the hydrocarbon mixture a catalyst comprising a volatility reducing additive and hydrofluoric acid to produce a hydrocarbon-catalyst mixture, permitting the hydrocarbon-catalyst mixture to undergo a phase separation to produce a hydrocarbon phase having a lower concentration of at least one organic fluoride than the hydrocarbon mixture and to produce a catalyst phase, and withdrawing at least a portion of the hydrocarbon phase to thereby form a hydrocarbon product stream, are disclosed. In an alternate embodiment, a system and/or process for controlling the concentration of at least one organic fluoride and/or the RON of the hydrocarbon mixture by adjusting the amount of volatility reducing additive present in the catalyst are disclosed.Type: GrantFiled: January 27, 1999Date of Patent: September 5, 2000Assignee: Phillips Petroleum CompanyInventors: Bruce B. Randolph, Kenneth Charles Hoover
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Patent number: 6100439Abstract: Methods and compositions for improving the extraction of phenols from crude styrene using an aqueous caustic solution are disclosed. It has been discovered that aromatic or alkylammonium tailed multi-polyether headed surfactants and/or quaternary polyamines will improve this extraction, particularly in propylene oxide styrene monomer systems.Type: GrantFiled: December 14, 1998Date of Patent: August 8, 2000Assignee: BetzDearborn Inc.Inventor: Paul R. Hart
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Patent number: 5110364Abstract: Substrates polluted with toxic substances are treated in-situ with solvated electrons prepared chemically or electrochemically. The process is useful in treating porous and nonporous substrates, such as earth, clay, sand, soils, concrete, asphalt, wood, brick, block and other masonry surfaces, including liquids such dielectric fluids contaminated with halogenated hydrocarbons without the usual separation procedures to provide substrates suitable for recycle having <1 ppm pollutant remaining.Type: GrantFiled: July 27, 1989Date of Patent: May 5, 1992Assignee: A.L. Sandpiper CorporationInventors: Duane J. Mazur, Norman L. Weinberg, Albert E. Abel
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Patent number: 5094723Abstract: m-Xylene is difficult to separate from p-xylene or o-xylene by conventional distillation or rectification because of the close proximity of their boiling points. m-Xylene can be readily separated from p-xylene or o-xylene by using extractive distillation in which the agent is an alcohol. Typical examples of effective agents are: for m-xylene from o-xylene, 1-octanol and cyclododecanol; for p-xylene from m-xylene, diisobutyl carbinol and cyclododecanolphenethyl alcohol mixture.Type: GrantFiled: January 2, 1991Date of Patent: March 10, 1992Assignee: Lloyd BergInventor: Lloyd Berg
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Patent number: 4906302Abstract: A method of decontaminating solid material consisting of removing organic hazardous waste from contaminated solid material with an aqueous ammonia solution. The resulting aqueous ammonia solution containing organic hazardous waste is further processed to isolate the organic hazardous waste in a small volume for disposal. Solid material such as soil so treated can be returned to the excavation site without further processing.Type: GrantFiled: April 4, 1989Date of Patent: March 6, 1990Inventor: James E. Bruya
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Patent number: 4841998Abstract: A method of decontaminating soil consisting of removing organic hazardous waste from contaminated soil with an aqueous ammonia solution. The resulting aqueous ammonia solution containing organic hazardous waste is further processed to isolate the organic hazardous waste in a small volume for disposal. Soil so treated can be returned to excavation site without further processing.Type: GrantFiled: October 26, 1987Date of Patent: June 27, 1989Inventor: James E. Bruya
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Patent number: 4642408Abstract: Nickel, aluminum and chlorine derivatives which remain dissolved in olefin oligomers after oligomerization in the presence of a catalyst comprising nickel, aluminum and chlorine compounds, are removed from the crude product by treatment with:oxygen or a gas containing oxygen,anhydrous ammonia, anda solution of an alkali metal hydroxide.Type: GrantFiled: April 22, 1985Date of Patent: February 10, 1987Assignee: Institut Francais du PetroleInventors: Yves Chauvin, Dominique Commereuc
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Patent number: 4613726Abstract: Nickel, aluminum and chlorine derivatives which remain dissolved in olefin oligomers, after oligomerization in the presence of a nickel, aluminum, and chlorine-containing catalysts, are removed by successive treatments with:(a) anhydrous ammonia,(b) an aqueous solution of alkali metal hydroxide, a treatment with an aqueous solution containing at least one hydroxy-acid or at least one alkali metal salt of said hydroxyacid being performed after treatment (a) and before or after or simultaneously with treatment (b), and preferably a treatment with oxygen or with an oxygen-containing gas being performed before or after treatments (a) and (b) or simultaneously with these treatments. Preferably, tartaric acid or an alkali metal tartrate is used.Type: GrantFiled: June 27, 1985Date of Patent: September 23, 1986Assignee: Institut Francais du PetroleInventors: Yves Chauvin, Dominique Commereuc, Daniel Cruypelinck, Francois Hugues, Georges Vidouta
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Patent number: 4455447Abstract: Process for the upgrading of hydrocarbons comprising conjugated diolefins using a dispersion of an alkali(ne earth) metal, characterized in that the upgrading is carried out in the presence of an aliphatic amine having at least one primary amine group.Type: GrantFiled: March 28, 1983Date of Patent: June 19, 1984Assignee: Shell Oil CompanyInventor: Antonius A. Broekhuis
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Patent number: 4437941Abstract: A hydrocarbon is removed from an azeotropic mixture of a hydrocarbon and an alcohol by distillation with anhydrous ammonia.Type: GrantFiled: May 7, 1982Date of Patent: March 20, 1984Assignee: Phillips Petroleum CompanyInventor: Stanley J. Marwil
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Patent number: 4296081Abstract: A process for purifying gaseous effluents containing aldehydes comprises submitting the gaseous effluents to the simultaneous action of SO.sub.2 and NH.sub.3 followed by washing with water. The ratio of the required quantities of NH.sub.3 and SO.sub.2 is between 2:1 and 3:1.When the gas to be purified naturally contains NH.sub.3, as is for instance the case in rendering plants, the quantity of NH.sub.3 to be added to the gas is reduced accordingly. Conversely when the gas to be treated naturally contains SO.sub.2, the quantity of SO.sub.2 to be added to the gas is also reduced accordingly. The most favorable ratio would correspond to a pH of the washing waters of between 7 and 7.5.Type: GrantFiled: February 1, 1980Date of Patent: October 20, 1981Assignee: Charbonnages de FranceInventors: Michel Nomine, Gerard Chelu
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Patent number: 4244711Abstract: A process is provided for minimizing the deposition of materials like naphthalene and tar in the ammonia liquor coolers of the primary cooler in a by-product recovery process for coking carbonaceous materials. The ammonia liquor coming from the primary cooler, wherein it is used to cool the coke oven gas, has added to it light oil before it reaches the ammonia liquor coolers, where it is cooled indirectly with water. The addition of the light oil keeps the naphthalene and tar in solution at the lower temperatures of the ammonia liquor coolers, thereby reducing or preventing the deposition of the naphthalene and tar in the ammonia liquor coolers.Type: GrantFiled: March 31, 1978Date of Patent: January 13, 1981Assignee: Koppers Company, Inc.Inventor: Elwood V. Schulte