Did You Know...
...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
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| Number | Title | Issue Date |
| 8075763 | Process for treating aged crude oil residue The present invention provides a process for the treatment of crude oil or aged crude oil residue comprising the steps of (a) contacting the oil or residue with a phenol resin and with a diluent, to provide a diluted phenol resin treated oil or residue; and (b) opti... | 12/13/2011 |
| 7993514 | Removal of peroxide impurities from naphtha stream A method and apparatus for removing peroxides from an exposed naphtha stream is shown and described. The process includes the catalytic reactive oxygen stripping of peroxides thereby generating hydrocarbons and oxygen. Numerous conventional catalysts may be employed... | 08/09/2011 |
| 7799212 | Method for preventing fouling of a heat exchanger for cooling residue from a hydrodesulfurization/hydrocracking process A method which controls sedimentation occurring at a heat exchanger for cooling hydrodesulfurization/hydrocracking residue containing asphaltenes at a high content and thereby prevents fouling of the heat exchanger is disclosed. A method for preventing fouling of a ... | 09/21/2010 |
| 7491318 | Method for prevention of corrosion by naphthenic acids in refineries The invention relates to a method for prevention of corrosion by naphthenic acids in a refinery comprising the use of a compound of the formula HS—B—COOR, where B is a saturated bivalent 1-18 C hydrocarbon and R is H, alkaline or alkaline earth metal, ammonium, ... | 02/17/2009 |
| 7431829 | Method for regenerating used oils by demetallization and distillation The present invention refers to a method for the regeneration of used petroleum oils which comprises the following steps: (a) demetallization of the used mineral oil by means of chemical treatment of said oil with an aqueous soluti... | 10/07/2008 |
| 7273957 | Process for the production of gasoline stocks A process for the production of gasoline stocks wherein lower molecular weight olefins are first oligomerized and the oligomers then hydrogenated. In the first instance the oligomerization is carried out in a single pass fixed bed boiling point reactor. The oligomer... | 09/25/2007 |
| 7270737 | Process for desulfurization comprising a stage for selective hydrogenation of diolefins and a stage for extraction of sulfur-containing compounds For desulfurization of a hydrocarbon-containing feedstock, at least one stage for selective hydrogenation of diolefins present in the initial hydrocarbon feedstock, in the presence of a catalyst of group VIII of the period table, and a stage for extraction by a solv... | 09/18/2007 |
| 7230148 | Process for hydrogenation of aromatics in hydrocarbon feedstocks containing thiopheneic compounds The present invention relates to an improved process for the hydrogenation of aromatics in hydrocarbon feedstocks containing thiopheneic compounds as impurities, the aromatics hydrogenation being conducted in a hydrogenation reactor in the presence of a nickel based... | 06/12/2007 |
| 7202391 | Process for inhibiting polymerization of an aromatic vinyl compound According to the present invention, there is provided a process for inhibiting the polymerization of an aromatic vinyl compound which is capable of efficiently inhibiting the polymerization of an aromatic vinyl compound not only in an initial stage but also over a l... | 04/10/2007 |
| 7175755 | Process for the extractive oxidation of contaminants from raw hydrocarbon streams A process for the extractive oxidation of contaminants from raw hydrocarbon streams rich in heteroatomic polar compounds is described, the said process involving the extractive oxidation of sulfur and nitrogen compounds from said streams, the said process comprising... | 02/13/2007 |
| 7153414 | Process for the upgrading of raw hydrocarbon streams A process for the upgrading of raw hydrocarbon streams rich in heteroatomic polar compounds and/or unsaturated moieties involving the extractive oxidation of sulfur, nitrogen, conjugated dienes and other unsaturated compounds from said streams, the said process comp... | 12/26/2006 |
| 7153807 | Catalysts for selective hydrogenation of alkynes and alkadienes Catalysts have been discovered that are useful in hydrogenation reactions, and particularly for the selective hydrogenation of acetylene and/or methyl acetylene (MA) and/or propadiene (PD) in light olefin-rich feedstreams. These catalysts can selectively hydrogenate... | 12/26/2006 |
| 7148388 | Process for preparing and olefinic hydrocarbon mixture In a process for preparing an olefinic hydrocarbon mixture comprising at least 5% by weight of mono-olefin oligomers of the empirical formula: CnH2n where n is greater than or equal to 6, a feedstock comprising n-butene and... | 12/12/2006 |
| 7145049 | Oligomerization process Alkenes, such as normal butenes in a mixed C4 stream are oligomerized, preferably to dimers, which are dimerized in a distillation column reactor over ZSM-57 zeolite catalyst at high conversions and high selectivity to octenes. Prior to oligomerization th... | 12/05/2006 |
| 7102038 | Phosphorous removal and diene removal, when using diene sensitive catalyst, during conversion of olefins to branched primary alcohols A process for making a selectively branched alcohol composition contacting a lower olefin feed comprising linear olefins having at least 3 carbon atoms and a concentration of phosphorous-containing compounds with a sorbent comprising a metal or metal oxide on a supp... | 09/05/2006 |
| 7081553 | Cobalt flash process The Cobalt Flash Process is modified by replacing formic acid with acetic acid as process acid. Efficiency using acetic acid as process acid is achieved by two improvements which may be added separately and independently: (1) separation of acetic acid and water from... | 07/25/2006 |
| 7081555 | Process for hydrogenation of aromatics in hydrocarbon feedstocks containing thiopheneic compounds The present invention relates to an improved process for the hydrogenation of aromatics in hydrocarbon feedstocks containing thiopheneic compounds as impurities, the aromatics hydrogenation being conducted in a hydrogenation reactor in the presence of a nickel based... | 07/25/2006 |
| 7081554 | Oxo process The Oxo Process that recycles its cobalt primarily as cobalt salt is improved by concentration of the cobalt salt solution from the demetalling section and the addition of a separation step for organic acid and water. This allows for a higher reuse of acid in the pr... | 07/25/2006 |
| 7078577 | DihydroDicyclopentadiene production A method for forming dihydroDicyclopentadiene comprises mixing a source of dicyclopentadiene with at least one solvent and at least one reactive component in the presence of a source of hydrogen and a selective hydrogenation catalyst, the solvent and reactive compon... | 07/18/2006 |
| 7038097 | Dual bed process using two different catalysts for selective hydrogenation of acetylene and dienes It has been discovered that a dual bed process using two different catalysts for the selective hydrogenation of acetylene and/or methyl acetylene (MA) and/or propadiene (PD) in a light olefin-rich feedstream can be accomplished with less selectivity to making oligom... | 05/02/2006 |
| 6855244 | Process for reducing coke agglomeration in coking processes In an embodiment, the invention relates to a method for reducing coke agglomeration in petroleum streams derived from coking processes. In a preferred embodiment, the invention relates to a method for mitigating filter fouling from a coker gas oil by using a pusher ... | 02/15/2005 |
| 6830677 | Process for reducing coke agglomeration in coking processes In an embodiment, the invention relates to a method for reducing coke agglomeration in petroleum streams derived from coking processes. In a preferred embodiment, the invention relates to a method for mitigating filter fouling from a coker gas oil wherein an oxygen ... | 12/14/2004 |
| 6589417 | Thermal apparatus and process for removing contaminants from oil Used oil is treated in a reactor to remove contaminants. The reactor comprises a rotating vessel housed within a heating chamber. The inside of the vessel is indirectly heated by conduction through the vessel walls. The vessel contains a permanently resid... | 07/08/2003 |
| 6579442 | Methods and compositions for inhibiting polymerization of vinyl monomers Methods and compositions for inhibiting the polymerization of vinyl monomers are disclosed. Combinations of nitroxyl compounds and aliphatic amines are effective at inhibiting the polymerization of vinyl monomers under both processing and storage conditio... | 06/17/2003 |
| 6544409 | Process for the catalytic oxidation of sulfur, nitrogen and unsaturated compounds from hydrocarbon streams A process for the catalytic oxidation of sulfur and nitrogen contaminants as well as unsaturated compounds present in a hydrocarbon fossil oil medium is described, the process comprising effecting the oxidation in the presence of at least one peroxide, at... | 04/08/2003 |
| 6217750 | Process for purifying naphthalene by selective hydrotreatment followed by separation The invention concerns a process for purifying naphthalene. The process comprises selective hydrotreatment corresponding to hydrodesulphuration and/or hydrodenitrogenation and/or hydrodehydroxylation and/or hydrogenation of olefins while limiting naphthal... | 04/17/2001 |
| 6207043 | Method of preparing low-sulphur aliphatic compounds Low-sulfur aliphatic compounds are obtained from olefin-rich starting materials contaminated with organic sulfur compounds.... | 03/27/2001 |
| 5968346 | Two stage hydroprocessing with vapor-liquid interstage contacting for vapor heteroatom removal A hydroprocessing process includes two hydroprocessing reaction stages, both of which produce a liquid and a vapor effluent, and a liquid-vapor contacting stage. The first stage vapor effluent contains impurities, such as heteroatom compounds, which are r... | 10/19/1999 |
| 5689033 | Process for removal of impurities from light paraffin isomerization feedstocks A process is directed to the removal of impurities such as sulfur compounds, oxygenates, and/or olefins from a light paraffin hydrocarbon feedstock such as a C4 -C6 fraction, which may be used subsequently in an isomerization process... | 11/18/1997 |
| 5672793 | Stabilization of hydrocarbons by the addition of hydrazine Hydrocarbon-containing fluid compositions are provided comprising at least one hydrocarbon fluid, at least one heteroaromatic, and at least one hydrazine additive. The resulting composition has reduced temporal formation of colored materials and/or gummy ... | 09/30/1997 |
| 5658453 | Integrated aromatization/trace-olefin-reduction scheme A process combination is disclosed to selectively upgrade naphtha in a manner to obtain an aromatics-rich, low-olefin product from the combination. Preferably the naphtha is subjected to aromatization to obtain an aromatics concentrate which is upgraded b... | 08/19/1997 |
| 5470457 | Stabilization of hydrocarbons by the addition of hydrazine Hydrocarbon-containing fluid compositions are provided comprising at least one hydrocarbon fluid, at least one heteroaromatic, and at least one hydrazine additive. The resulting composition has reduced temporal formation of colored materials and/or gummy ... | 11/28/1995 |
| 5318697 | Process for upgrading hydrocarbonaceous materials This invention relates to a process for upgrading a hydrocarbonaceous material to a product having a lower boiling point than the initial boiling point of said hydrocarbonaceous material and/or a higher boiling point than the final boiling point of said h... | 06/07/1994 |
| 5154817 | Method for inhibiting gum and sediment formation in liquid hydrocarbon mediums Gum and sediment formation in liquid hydrocarbon mediums are inhibited by adding to the medium a branched or straight chain C1 -C8 aminoalcohol. The invention is particularly well-suited for use in hydrodesulfurizer processes wherein... | 10/13/1992 |
| 4941968 | Method for inhibiting gum formation in liquid hydrocarbon mediums Gum and sediment formation in liquid hydrocarbon mediums are inhibited by adding to the medium an alkyl 1,2-dihydroquinoline compound, dimer, trimer or polymer thereof. The invention is particularly well-suited for use in hydrodesulfurizer processes where... | 07/17/1990 |
| 4912873 | Removal of polar impurities from diesel and jet fuel Treatment of diesel or jet fuel with a non-ionic, macroreticular, cross-linked, acrylic aliphatic ester resin reduces polar impurities and (diesel) color.... | 04/03/1990 |
| 4900427 | Antifoulant compositions and methods Fouling of heat exchangers in chemical processing or oil refining systems is inhibited by incorporating into a petroleum derived stock an effective antifouling amount of a mixture of (a) a condensation product of an alkylphenol, an aldehyde, and an amine; ... | 02/13/1990 |
| 4894139 | Methods for deactivating copper in hydrocarbon fluids Certain Mannich reaction products formed from the reaction of an alkyl substituted catechol, a polyamine, and an aldehyde are used to deactivate copper metal species contained in hydrocarbon fluids. Left untreated, such copper species lead to decompositio... | 01/16/1990 |
| 4840720 | Process for minimizing fouling of processing equipment This invention relates to processes for inhibiting the degradation, particulate and gum formation of distillate fuel oils prior to or during processing which comprises adding to the distillate fuel oil an effective inhibiting amount of a mixture of (a) a ... | 06/20/1989 |
| 4810354 | Bifunctional antifoulant compositions and methods Alkoxylated Mannich product compositions and methods of use of same as process antifoulants are disclosed. The alkoxylated Mannich products deactivate metals and inhibit oxygen promoted polymerization in hydrocarbons and petrochemicals.... | 03/07/1989 |
