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| Number | Title | Issue Date |
| 7837858 | Method for starting autothermal reformer For shortening the starting time of an autothermal reformer, the autothermal reformer is started by a method comprising: a first preheating step of heating a reforming catalyst up to a predetermined temperature with use of heating means, the heating means being posi... | 11/23/2010 |
| 7371315 | Flexible method for producing oil bases and distillates by hydroisomerization-conversion on a weakly dispersed catalyst followed by a catalyctic dewaxing A process for production of very high-quality base oils, and simultaneous production of high-quality middle distillates, comprises the successive stages of hydroisomerization and catalytic dewaxing. The hydroisomerization takes place in the presence of a catalyst co... | 05/13/2008 |
| 7326819 | High-activity isomerization catalyst and process A catalyst and process is disclosed to selectively upgrade a paraffinic feedstock to obtain an isoparaffin-rich product for blending into gasoline. The catalyst comprises a support of a sulfated oxide or hydroxide of a Group IVB (IUPAC 4) metal, a first component of... | 02/05/2008 |
| 7304193 | Integrated process for aromatics production An aromatics complex flow scheme has been developed. The isomerized xylenes effluent from a xylene recovery zone is recycled to a transalkylation stripper without requiring C8 aromatic hydrocarbons to be separated. This improvement results in an aromatics... | 12/04/2007 |
| 7294253 | Process for producing middle distillates This invention relates to process for producing middle distillates having good cold flow properties, such as the Cold Filter Plugging Point (CFPP) measured in accordance with the IP method 309, and a high Cetane number, as well as to a process for production of such... | 11/13/2007 |
| 7288687 | Integrated process for aromatics production An aromatics complex flow scheme has been developed in which C7-C8 aliphatic hydrocarbons are recycled to an isomerization unit of a xylene recovery zone to increase the efficiency of the isomerization unit. This improvement results in an aroma... | 10/30/2007 |
| 7268263 | Integrated process for aromatics production An aromatics complex flow scheme has been developed. C7-C8 aliphatic hydrocarbons are recycled to an isomerization unit of a xylene recovery zone to increase the efficiency of the isomerization unit. This improvement results in an aromatics com... | 09/11/2007 |
| 7267758 | Flexible method for producing oil bases and middle distillates with hydroisomerization-conversion followed by catalytic dewaxing For producing very high quality base stock and for simultaneously producing high quality middle distillates, successive hydroisomerisation and catalytic dewaxmg steps are employed wherein the hydroisomerisation is carried out in the presence of a catalyst containing... | 09/11/2007 |
| 7261805 | Process for catalytic dewaxing and catalytic cracking of hydrocarbon streams A process for upgrading a hydrocarbon feedstock containing waxy components and having an end boiling point exceeding 650° F., which includes contacting the feedstock at superatmospheric hydrogen partial pressure with an isomerization dewaxing catalyst that includes... | 08/28/2007 |
| 7250107 | Flexible method for producing oil bases and distillates from feedstock containing heteroatoms For producing basic oils and in particular very high quality oils, i.e. oils possessing a high viscosity index (VI), a low aromatics content, good UV stability and a low pour point, from oil cuts having an initial boiling point higher than 340° C., possibly with si... | 07/31/2007 |
| 7220505 | Autothermal reformer-reforming exchanger arrangement for hydrogen production Low-energy, low-capital hydrogen production is disclosed. A reforming exchanger 14 is placed in parallel with an autothermal reformer (ATR) 10 to which are supplied a preheated steam-hydrocarbon mixture. An air-steam mixture is supplied to the burner/m... | 05/22/2007 |
| 7179434 | Integrated apparatus for aromatics production Enabling a transalkylation process to handle both C10 alkylaromatics and unextracted toluene permits the following improvements to be realized. No longer extracting toluene allows a reformate-splitter column to be eliminated. The extraction unit can be mo... | 02/20/2007 |
| 7169368 | Integrated apparatus for aromatics production Enabling a transalkylation process to handle both C10 alkylaromatics and unextracted toluene permits the following improvements to be realized. No longer extracting toluene allows a reformate-splitter column to be eliminated. The extraction unit can be mo... | 01/30/2007 |
| 6993349 | Smart ringer A telephone monitors ambient noise, and alters the characteristics of the audible ring to distinguish the sound of the ringing telephone from the ambient noise. Such characteristics include the decibel level, the sound frequency, and the rhythmic pattern or the ring... | 01/31/2006 |
| 6979396 | Combination reforming and isomerization process A reforming and isomerization process has been developed. A reforming feedstream is charged to a reforming zone containing a reforming catalyst and operating at reforming conditions to generate a reforming zone effluent. Hydrogen and an isomerization feedstream is c... | 12/27/2005 |
| 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 |
| 6890423 | Distillate fuel blends from Fischer Tropsch products with improved seal swell properties The invention provides distillate fuel blend components with improved seal swell and lubricity properties obtained from Fischer Tropsch products. The blends contain a highly paraffinic distillate fuel component and distillate-boiling alkylcycloparaffins and/or disti... | 05/10/2005 |
| 6875338 | Process for endothermic conversion of hydrocarbons, its uses, and a unit for carrying out the process The invention concerns a process for converting hydrocarbons using at least one globally endothermic chemical reaction, in which a hydrocarbon feed successively traverses at least two reaction zones each containing at least one solid catalyst and comprising between ... | 04/05/2005 |
| 6875339 | Octane improvement of a hydrocarbon stream The invention relates to methods for improving the octane number of a synthetic naphtha stream and optionally for producing olefins and/or solvents. In one embodiment, the method comprises aromatizing at least a portion of a synthetic naphtha stream to produce an ar... | 04/05/2005 |
| 6602402 | Flexible process for producing base stock and distillates by conversion-hydroisomerisation using a catalyst with low dispersion followed by catalytic dewaxing An improved process for producing very high quality base stock and for simultaneous production of high quality middle distallates, comprising successive hydroisomerisation and catalystic dewaxing steps wherein hydroisomerisation is carried out in the pres... | 08/05/2003 |
| 6602405 | Sulfur removal process A product of reduced sulfur content is produced from an olefin-containing hydrocarbon feedstock which includes sulfur-containing impurities. The feedstock is contacted with an olefin-modification catalyst in a reaction zone under conditions which are effe... | 08/05/2003 |
| 6599417 | Sulfur removal process A product of reduced sulfur content is produced from an olefin-containing hydrocarbon feedstock which includes sulfur-containing impurities. The feedstock is contacted with an olefin-modification catalyst in a reaction zone under conditions which are effe... | 07/29/2003 |
| 6475374 | Production of lubricating oils by a combination catalyst system A process for preparing a lubricating oil basestock having good low temperature properties. The process includes a first amorphous isomerization catalyst having a pore volume less than 0.99 ml/gm (H2 O), an alumina content in the range of 30-50... | 11/05/2002 |
| 6436278 | Process for producing gasoline with an improved octane number The invention concerns a process for producing gasoline with an improved octane number, optionally accompanied by oil and/or middle distillate production, by conversion-hydroisomerization of the paraffins in the feed using a catalyst containing at least o... | 08/20/2002 |
| 6338791 | High octane number gasolines and their production using a process associating hydro-isomerization and separation The invention provides a high octane number gasoline pool comprises at least 2% of di-branched paraffins containing 7 carbon atoms, and a process for producing this gasoline pool by hydro-isomerizing a feed constituted by a C5 to C8 cut which comprises at... | 01/15/2002 |
| 6284128 | Reforming with selective reformate olefin saturation A process combination is disclosed to selectively upgrade hydrocarbons in a manner to essentially eliminate olefins in product from the combination. Preferably the hydrocarbons comprise naphtha which is reformed to upgrade its octane number and/or to prod... | 09/04/2001 |
| 6153086 | Combination cocurrent and countercurrent staged hydroprocessing with a vapor stage A hydroprocessing process includes a cocurrent flow liquid reaction stage, a countercurrent flow liquid reaction stage and a vapor reaction stage in which feed components are catalytically hydroprocessed by reacting with hydrogen. Both liquid stages both ... | 11/28/2000 |
| 6149800 | Process for increased olefin yields from heavy feedstocks A process for upgrading petroleum feedstocks boiling in the distillate plus range, which feedstocks, when cracked, result in unexpected high yields of olefins. The feedstock is hydroprocessed in at least one reaction zone countercurrent to the flow of a h... | 11/21/2000 |
| 6124514 | Process for generating pure benzene from reformed gasoline A process is disclosed for generating pure aromatic compounds from a reformed gasoline which contains aromatic compounds, olefins, diolefin, and triolefins, which comprises the steps of: (a) selectively hydrogenating the olefins, diolefins and triolefins in th... | 09/26/2000 |
| 6083379 | Process for desulfurizing and aromatizing hydrocarbons A process for desulfurizing and enhancing the octane of cracked gasoline by first aromatizing the cracked gasoline and, second, hydrodesulfurizing the resulting intermediate product stream.... | 07/04/2000 |
| 5985131 | Hydroprocessing in a countercurrent reaction vessel A process for upgrading a liquid petroleum or chemical stream wherein said stream flows countercurrent to the flow of a treat gas, such as a hydrogen-containing gas, in at least one reaction zone. The reaction vessel used in the practice of the present in... | 11/16/1999 |
| 5935413 | Interbed gas-liquid mixing system for cocurrent downflow reactors An apparatus for mixing vapor and liquid reactants within a column. The apparatus forms a first mixing zone into which a first reactant (e.g., vapor) is homogenized by swirl flow and flows vertically downward. The apparatus further forms a second mixing z... | 08/10/1999 |
| 5906728 | Process for increased olefin yields from heavy feedstocks A process for upgrading petroleum feedstocks boiling in the distillate plus range, which feedstocks, when cracked, result in unexpected high yields of olefins. The feedstock is hydroprocessed in at least one reaction zone countercurrent to the flow of a h... | 05/25/1999 |
| 5888376 | Conversion of fischer-tropsch light oil to jet fuel by countercurrent processing A process for converting a Fischer-Tropsch light oil stream to jet fuel by reacting said stream with a hydroisomerization catalyst in a reaction zone where the stream flows countercurrent to upflowing hydrogen-containing treat gas.... | 03/30/1999 |
| 5865988 | Hydrocarbon upgrading process Low sulfur gasoline is produced from an olefinic, cracked, sulfur-containing naphtha by treatment over an acidic catalyst, preferably an intermediate pore size zeolite such as ZSM-5 to crack low octane paraffins and olefins under relatively mild condition... | 02/02/1999 |
| 5865987 | Benzene conversion in an improved gasoline upgrading process Low sulfur gasoline is produced from an olefinic, cracked, sulfur-containing naphtha by treatment over an acidic catalyst, preferably an intermediate pore size zeolite such as ZSM-5 to crack low octane paraffins and olefins under mild conditions with limi... | 02/02/1999 |
| 5858209 | Catalytic reforming process with increased aromatics yield A processing step is added to an existing catalytic reforming unit to increase the yield of aromatic product. The additional processing comprises separation of product from the reforming unit into an aromatic concentrate and a low-octane recycle stream wh... | 01/12/1999 |
| 5847252 | Process for integrated oligomer production and saturation A process for the production motor fuel components from isoparaffins by dehydrogenation, oligomerization and saturation uses a combination of low severity dehydrogenation, first and second feed input locations and a primary separation column that receives... | 12/08/1998 |
| 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 |
| 5611913 | Dissolving salt for solid caustic with oil Acidic halides, especially chlorides, are removed from dry process vapor and liquid hydrocarbon streams by contact with solid caustic, such as a bed of NaOH. Salt deposits from form on the solid caustic, which are periodically removed by passing a liquid ... | 03/18/1997 |
