Did You Know...
...that several people are credited with the invention of the flush toilet? Most people have heard of Thomas Crapper (1837-1910), the sanitary engineer who invented the valve-and-siphon arrangement that made the modern toilet possible. Another claimant to "the throne" was British inventor Alexander Cumming who patented a toilet in 1775. Then there's a nameless Minoan (a native of ancient Crete) who lived 4,000 years ago who supposedly was ahead of his time and created the first flush toilet!
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| Number | Title | Issue Date |
| 7288184 | Process for mitigating acids in a system for separating aromatic hydrocarbons from a hydrocarbon feedstream Disclosed is a process for removing acids in a system in which aromatic hydrocarbons are separated from a mixture with aliphatic hydrocarbons. The aromatic hydrocarbons are extracted from the mixture using an extracting solvent. The aromatic hydrocarbons are strippe... | 10/30/2007 |
| 7244873 | Process and apparatus for separating oxygenate modifier from oligomerization effluent by water wash It has now been disclosed that by directing the effluent from an oligomerization reactor to a water wash column to remove alcohol modifier from the hydrocarbon stream before sending it to a fractionation column offers flexibility in providing a bottoms product of a ... | 07/17/2007 |
| 7156981 | ITFM extraction of oil seeds A process for the producing edible protein-containing meal for human and animal consumption and high quality food grade oils from oil seed using iodotrifluoromathane as the solvent is shown. The meal has a significantly improved level of dietary available (absorbabl... | 01/02/2007 |
| 7041485 | Method for preparing free polyunsaturated fatty acids and their oxidation metabolites The invention relates to a method for preparing free polyunsaturated fatty acids and their oxidation metabolites, wherein, successively, the production of polyunsaturated fatty acids and of their oxidation metabolites is stimulated... | 05/09/2006 |
| 6974535 | Hydroconversion process for making lubricating oil basestockes A process for producing a lubricating oil basestock having at least 90 wt. % saturates and a VI of at least 105 by selectively hydroconverting a raffinate from a solvent extraction zone in a two step hydroconversion zone followed by a hydrofinishing zone, and a lubr... | 12/13/2005 |
| 6890424 | Process for extracting fixed and mineral oils The present invention relates to a method of extracting and concentrating oils from materials in which the oils are already dispersed. More particularly, the present invention is concerned with the extraction of fixed oils or mineral oils from materials using a proc... | 05/10/2005 |
| 6890425 | Solvent extraction refining of petroleum products A method of refining a petroleum product to remove aromatics and to separate paraffinic oils and waxes is provided. The method involves the utilization of phase equilibria wherein crystallized or solidified waxes, normally present in the petroleum product, are used ... | 05/10/2005 |
| 6878263 | Rubber process oil and production process thereof Disclosed is a rubber process oil in which the content of polycyclic aromatics (PCAs) as determined by the IP 346 method is less than 3% by mass and which is rich in aromatic hydrocarbons, and a method for producing the same. The aniline point of the rubber process ... | 04/12/2005 |
| 6875341 | Process for enhancing the value of hydrocabonaceous natural recources A process for upgrading hydrocarbonaceous oil containing heteroatom-containing compounds where the hydrocarbonaceous oil is contacted with a solvent system that is a mixture of a major portion of a polar solvent having a dipole moment greater than about 1 debye and ... | 04/05/2005 |
| 6866772 | Extraction of aromatics from hydrocarbon oil using furfural-co-solvent extraction process An improved furfural extraction process for lube oil base-stock production from hydrocarbon oils containing aromatic type material by the addition of a solvent comprising of furfural and a co-solvent, said process being conducted in a continuous countercurrent extra... | 03/15/2005 |
| 6844480 | Method of separating dimethyl ether from an olefin stream This invention is directed to a method of removing dimethyl ether from an olefin stream. Dimethyl ether is removed from the olefin stream by first separating the olefin stream into a first stream comprising dimethyl ether and lighter boiling point compounds, and a s... | 01/18/2005 |
| 6802960 | Two stage extraction oil treatment process A process for the production of a process oil, the process comprising: a) contacting a petroleum distillate with a polar solvent in an extraction column which operates with a bottom temperature of 30 to 80° C., b)... | 10/12/2004 |
| 6802959 | Separation of olefinic hydrocarbons from sulfur-containing hydrocarbons by use of a solvent A process for separating olefins from sulfur-containing hydrocarbons contained in a hydrocarbon feedstock is disclosed and includes contacting the hydrocarbon feedstock with N-hydroxyethyl pyrollidone in a contacting zone, removing at least one olefin overhead from ... | 10/12/2004 |
| 6759438 | Use of oxygen analysis by GC-AED for control of fischer-tropsch process and product blending Methods for producing a substantially paraffinic Fischer-Tropsch product or a blended Fischer Tropsch product comprising a selected oxygenate concentration, and if required, a selected oxygenate concentration of specific individual oxygenates, are disclosed. The met... | 07/06/2004 |
| 6676828 | Process scheme for sequentially treating diesel and vacuum gas oil A process for treating a vacuum gas oil and Diesel feed includes the steps of providing reaction feed containing vacuum gas oil, Diesel and sulfur-containing compounds; providing a stripping gas; providing a washing feed; and mixing the reaction feed, the... | 01/13/2004 |
| 6616831 | Aromatics separation process and method of retrofitting existing equipment for same An improved process for the recovery of aromatic compounds from a mixture containing aromatic and non-aromatic compounds and method for retrofitting existing equipment for the same is provided. The improved process comprises the steps of recovering aromat... | 09/09/2003 |
| 6590132 | Separation of monomer from oligomer with lower bottoms temperature The process disclosed separates light olefins from heavy oligomers in a distillation column with an intermediary having a boiling point between the light olefin and the heavy oligomer in the column feed. The invention contemplates separating C4... | 07/08/2003 |
| 6565742 | Aromatics separation process and method of retrofitting existing equipment for same An improved process for the recovery of aromatic compounds from a mixture containing aromatic and non-aromatic compounds and method for retrofitting existing equipment for the same is provided. The improved process comprises the steps of recovering aromat... | 05/20/2003 |
| 6554995 | Method of separating petroleum-containing material into fractions, extraction system, and extraction fluid therefor A method of separating a petroleum-containing material into at least two fractions, an extraction system, and an extraction fluid therefor are provided. Petroleum-containing material as well as a solvent mixture comprising 50%-99% by volume sub-critical c... | 04/29/2003 |
| 6497813 | Solvent extraction refining of petroleum products A method of refining a petroleum product to remove aromatics and to separate paraffinic oils and waxes is provided. The method involves the utilization of phase equilibria wherein crystallized or solidified waxes, normally present in the petroleum product... | 12/24/2002 |
| 6483003 | Removal of impurities from a hydrocarbon component or fraction A process for removing impurities from a hydrocarbon component or fraction comprises mixing, in a liquid-liquid extraction step, an impurity-containing liquid hydrocarbon component or fraction, as an impure liquid hydrocarbon feedstock, with an acetonitri... | 11/19/2002 |
| 6444116 | Process scheme for sequentially hydrotreating-hydrocracking diesel and vacuum gas oil An integrated process for treating a vacuum gas oil, kerosene, naphtha and Diesel-containing feed, includes the steps of providing a reaction feed containing residue, vacuum gas oil, kerosene, naphtha, Diesel, hydrogen sulfide, ammonia, and C1 ... | 09/03/2002 |
| 6375802 | Method of retrofitting existing equipment for an improved aromatics separation process An improved process for the recovery of aromatic compounds from a mixture containing aromatic and non-aromatic compounds and method for retrofitting existing equipment for the same is provided. The improved process comprises the steps of recovering aromat... | 04/23/2002 |
| 6294082 | Process for solvent extraction of hydrocarbons providing an increased yield of raffinate A process for upgrading a hydrocarbon oil is provided which comprises introducing the oil and an aromatic extraction solvent containing 0.1 to 10 vol % water into an extraction zone for contact of the oil and solvent therein whereby an extract solution is... | 09/25/2001 |
| 6171471 | Heavy oil upgrading process (LAW813) The present invention is a slurry-type process for upgrading heavy oils to FCC and S/C feeds under temperature and pressure conditions similar to MSHP, but employing catalysts in concentrations small enough (e.g., | 01/09/2001 |
| 6146520 | Selective re-extraction of lube extracts to reduce mutagenicity index A process for reducing the Mutagenicity Index and/or the PCA content of a lubricating oil extract by re-extracting a lubricating oil extract with a second extraction solvent, different from the first extraction solvent, to form a secondary raffinate and a... | 11/14/2000 |
| 6117309 | Method of rerefining waste oil by distillation and extraction A process for recovering a base oil of lubricating viscosity from used oil in which, following optional pretreatment, used oil is re-refined by distilling it in distillation apparatus having multiple theoretical plates. Impurities are then extracted from ... | 09/12/2000 |
| 6024864 | Method for making a process oil by using aromatic enrichment and two pass hydrofinishing A method for producing a process oil is provided in which an aromatic extract oil is added to a paraffinic rich feed to provide a blended feed. The blended feed is then hydrotreated in a first hydrotreating stage to convert at least a portion of sulfur an... | 02/15/2000 |
| 5965784 | Process and apparatus for extracting aromatic compounds contained in a hydrocarbon feedstock An extraction process and an apparatus for separating aromatic compounds contained in a liquid hydrocarbon feedstock where the feedstock feed into the lower part of an extraction column is brought into intimate countercurrent contact therein with a third ... | 10/12/1999 |
| 5922193 | Addition of ethers or aldehydes to furfural for aromatic extractions A process to improve the performance of furfural for aromatics extraction from gas oils and lube distillates by the addition of ethers and/or aldehydes, preferably having a dielectric constant less than about 40 @ 25° C.... | 07/13/1999 |
| 5914010 | Apparatus for solvent-deasphalting residual oil containing asphaltenes A feed stream of asphaltene-containing residual oil is processed by contacting the feed stream with a solvent to form a first primary liquid stream containing deasphalted oil (DAO) and some solvent, and a second primary liquid stream containing asphaltene... | 06/22/1999 |
| 5846405 | Process oils and manufacturing process for such using aromatic enrichment and two pass hydrofinishing A method for producing a process oil is provided in which an aromatic extract oil is added to a napthenic rich feed. The combined feed is then hydrotreated in a first hydrotreating stage to convert at least a portion of sulfur and nitrogen in the feed to ... | 12/08/1998 |
| 5843302 | Solvent deasphalting unit capable of generating power Solvent deasphalting apparatus includes a separator that receives two inputs, a heavy hydrocarbon feed and a solvent feed; and the apparatus produces two outputs, an asphaltene/solvent stream and a deasphalted oil/solvent stream. A solvent recovery unit o... | 12/01/1998 |
| 5840175 | Process oils and manufacturing process for such using aromatic enrichment with extraction followed by single stage hydrofinishing A method for producing a process oil is provided in which an aromatic extract oil is added to a naphthenic rich feed to provide a blended feed. The blended feed is then extracted with an aromatic extract solvent to yield a raffinate which subsequently is ... | 11/24/1998 |
| 5804060 | Method of and apparatus for producing power in solvent deasphalting units Power is generated in an organic Rankine cycle turbine by expanding a stream of solvent vapor produced by a flash drum in a deasphalting unit to produce a stream of expanded solvent vapor that is combined with a stream of solvent vapor and steam from a st... | 09/08/1998 |
| 5698103 | Extraction of water-soluble metal chelates used as catalysts in sweetening sour hydrocarbon feedstocks Sweetening of sour hydrocarbon feedstocks by contacting with an aqueous solution of a metal chelate as an oxidation catalyst in the presence of oxygen is hindered by the difficulty of recovering metal chelate. Extraction of the aqueous phase with a liquid... | 12/16/1997 |
| 5693257 | Compositions and method for breaking water-in-oil emulsions Compositions of an alkylphenol-formaldehyde resin and poly(alkylene glycol) are effective at breaking water-in-oil emulsions in a liquid hydrocarbon. Preferably, the composition is employed in a crude oil desalting system.... | 12/02/1997 |
| 5616238 | Solvent extraction of hydrocarbon oils producing an increased yield of improved quality raffinate The present invention is directed to an improved selective solvent extraction process wherein a hydrocarbon feed stream containing a mixture of aromatics and non-aromatics is contacted with an aromatics selective solvent in an extraction zone to produce a... | 04/01/1997 |
| 5614101 | Methods for treating mud wash emulsions The present invention provides for methods for treating bottoms sludge and water-oil interphase emulsions present in a containment vessel by injecting into the sludge an effective resolving amount of an oil-based demuislfier. In a preferred embodiment, th... | 03/25/1997 |
| 5328596 | Lubricating oil refining process Thermal degradation of furfural in solvent refining of lubricating oil stocks is reduced by use of a thin-film evaporator for the final stages of furfural recovery, permitting increased pressure to be used in each stage of furfural recovery.... | 07/12/1994 |
