| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 208024000 | PARAFFIN WAX; TREATMENT OR RECOVERY | 22 |
| 208026000 | With sorption agents | 2 |
| 20100116711 | Systems and Methods for Producing N-Paraffins From Low Value Feedstocks - Systems and methods for producing n-paraffins are provided. The method can include hydroprocessing at least a portion of a kerosene fraction recovered from a thermally cracked hydrocarbon product to produce a hydroprocessed kerosene product comprising n-paraffins. The n-paraffins can be separated from the hydroprocessed kerosene product to produce an n-paraffins product. | 05-13-2010 |
| 20120152802 | Elimination of Residual Transfer Line Raffinate from Feed to Increase Normal Paraffin Separation Unit Capacity - A process to increase the capacity of the adsorbent in a normal paraffin adsorption separation system is presented. A tertiary flush stream is used to improve the capacity of the simulated moving bed system by flushing residual raffinate from the feed transfer line. The flushing removes residual raffinate containing desorbent that competes with the adsorption of normal paraffins from the feedstream. The flush stream is a material that will displace fluid in the column, but will not enter the pores of the adsorbent. | 06-21-2012 |
| 208027000 | Chemical treatment (refining or modification except mere solvent extraction) | 15 |
| 20090065393 | Fluid catalytic cracking and hydrotreating processes for fabricating diesel fuel from waxes - A method for obtaining a petroleum distillate product is provided, the method including subjecting a paraffin-based wax, such as a Fisher-Tropsch wax, to the process of cracking at a pressure less than, or equal to, about 7 Kg/cm | 03-12-2009 |
| 20090065394 | Hydrocracking process for fabricating distillate from fisher-tropsch waxes - A method for obtaining a petroleum distillate product is provided, the method includes subjecting a Fischer-Tropsch wax to a process of hydrocraking carried out at a pressure which is substantially lower that the pressure previously used. A catalyst including a noble metal is used in this method. An apparatus for carrying out the method is also provided. | 03-12-2009 |
| 20090159490 | METHOD OF HYDROGENOLYSIS OF WAX AND PROCESS FOR PRODUCING FUEL BASE - The hydrocracking method of wax of the invention is a hydrocracking process wherein crude wax is subjected to hydrocracking and the untreated wax fraction that is produced after the hydrocracking is re-supplied for hydrocracking, and wherein hydrocracking of the mixture of the crude wax and untreated wax fraction is carried out in such a manner for a conversion ratio of 50-85% by mass from the wax fraction with a boiling point of 360° C. or above to the light fraction with a boiling point of below 360° C. in the presence of a hydrocracking catalyst. It is thereby possible to simultaneously achieve both an increased heart-cut fraction yield (as the product of the hydrocracking) and a reduced normal paraffin content in the heart-cut fraction when the untreated wax is hydrocracked by a bottom recycling system. | 06-25-2009 |
| 20090178952 | PROCESS TO UPGRADE HIGHLY WAXY CRUDE OIL BY HOT PRESSURIZED WATER - A continuous process for upgrading highly waxy crude oil by contacting the highly waxy crude oil with supercritical water fluid to produce low pour point, high value crude oil having low sulfur, low nitrogen, and low metallic impurities for use as hydrocarbon feedstock. | 07-16-2009 |
| 20090230021 | Process for reducing the cloud point of a base oil - The invention relates to a process for reducing the cloud point of a base oil feed having a kinematic viscosity at 100° C. of greater than 10 cSt by separating the molecules inferring the high cloud point from the base oil by (a) depositing said molecules on one side of a cooled surface, (b) obtaining a base oil having a reduced cloud point and (c) melting the deposited molecules and separating the melted molecules from the surface and reusing said surface to perform step (a). | 09-17-2009 |
| 20090261015 | Production of high viscosity index lube base oils - The invention below shows a preferred method to make high quality base oil at unexpectedly high yields using a combination of hydrotreatment of high waxy feedstocks accompanied by hydroisomerization of the resulting wax to produce an extra high VI lube of greater than 140VI and at least −18 deg C. pour point or less. The preferred combinations of conditions identified below can surprisingly lead to unexpectedly high yields. This allows the use of higher oil content (or lower wax content) feedstocks. | 10-22-2009 |
| 20090277817 | METHOD OF HYDROTREATING WAX AND PROCESSES FOR PRODUCING FUEL BASE AND LUBRICATING OIL BASE - The wax hydrotreating process of the present invention is characterized by hydrotreating the wax by bringing the wax, under a hydrogen atmosphere and at a liquid space velocity of 0.4 to 4.0 h | 11-12-2009 |
| 20090321308 | METHOD FOR PRODUCING A BASE OIL HAVING HIGH WEIGHT PERCENT TOTAL MOLECULES WITH CYCLOPARAFFINIC FUNCTIONALITY AND LOW WEIGHT PERCENT MOLECULES WITH MULTICYCLOPARAFFINIC FUNCTIONALITY - A method for producing a base oil having a high ratio of weight percent molecules with monocycloparaffinic functionality to weight percent molecules with multicycloparaffinic functionality by hydroisomerization dewaxing a selected Fischer-Tropsch wax under hydroisomerization conditions including a hydrogen to feed ratio from about 712.4 to about 3562 liter H | 12-31-2009 |
| 20100219101 | PROCESS TO MAKE A LIGHT BASE OIL FRACTION HAVING LOW NOACK VOLATILITY - A process to make a light base oil fraction having a wt % Noack volatility between 0 and 100 and additionally less than a Noack Volatility Factor (NVF), wherein the Noack Volatility Factor is defined by the equation: 900×(Kinematic Viscosity at 100° C.) | 09-02-2010 |
| 20110042267 | HYDROISOMERIZATION CATALYST, PROCESS FOR PRODUCING THE SAME, METHOD OF DEWAXING HYDROCARBON OIL, AND PROCESS FOR PRODUCING LUBE BASE OIL - A hydroisomerization catalyst of the present invention is obtained by calcining a catalyst composition containing an ion-exchanged molecular sieve or a calcined product thereof, and at least one metal selected from the group consisting of metals of Groups 8 to 10 in Periodic Table of the elements, molybdenum and tungsten, carried on the ion-exchanged molecular sieve or the calcined product thereof, wherein the ion-exchanged molecular sieve is obtained by ion-exchanging a molecular sieve, which includes nanocrystals having a pore structure of ten-membered rings or eight-membered rings and having a ratio of the pore volume to the external surface area ([pore volume]/[external surface area]) of 2.0×10 | 02-24-2011 |
| 20110094936 | Process for Improving the Lubricating Properties of Base Oils Using a Fischer-Tropsch Derived Bottoms - A method for improving the lubricating properties of a distillate base oil characterized by a pour point of 0 degrees C. or less and a boiling range having the 10 percent point falling between about 625 degrees F. and about 790 degrees F. and the 90 percent point falling between about 725 degrees F. and about 950 degrees F., the method comprises blending with said distillate base oil a sufficient amount of a pour point depressing base oil blending component to reduce the pour point of the resulting base oil blend at least 3 degrees C. below the pour point of the distillate base oil, wherein the pour point depressing base oil blending component is an isomerized Fischer-Tropsch derived bottoms product having a pour point that is at least 3 degrees C. higher than the pour point of the distillate base oil. | 04-28-2011 |
| 20110100872 | N-paraffin selective hydroconversion process using borosilicate ZSM-48 molecular sieves - The present invention is directed to processes using a borosilicate ZSM-48 as a catalyst for the selective hydroconversion of heavy normal paraffins into lighter normal paraffin products, with minimal formation of isoparaffins. The borosilicate ZSM-48 molecular sieve has a mole ratio of between 40 and 400 of silicon oxide to boron oxide, synthesized using novel structure directing agents. | 05-05-2011 |
| 20110180453 | Catalytic Dewaxing Process - In a catalytic dewaxing process, a catalyst comprising from 40 to 80 wt % of ZSM-48 having a silica to alumina molar ratio of less than 200:1 and from 0.3 to 1.5 wt % of a metal or metal compound from Groups 8 to 10 of the Periodic Table of the Elements is provided in a reaction zone. The catalyst is periodically contacted in the reaction zone under dewaxing conditions with a first hydrocarbon feedstock having a wax content of less than 50 wt % and with a second hydrocarbon feedstock having a wax content of 50 wt % or more. | 07-28-2011 |
| 20120037539 | METHOD FOR PRODUCING LUBRICANT BASE OIL - A process for production of a lubricating base oil whereby a lubricating base oil is obtained by a first step in which a stock oil containing normal paraffins of C | 02-16-2012 |
| 20120217186 | METHOD FOR PRODUCING LUBRICANT BASE OIL - A method for producing a lubricant base oil includes contacting feedstock containing normal paraffins having not less than 20 carbon atoms with a first catalyst in the presence of molecular hydrogen to obtain a first produced oil, and contacting the first produced oil with a second catalyst in the presence of molecular hydrogen to obtain a second produced oil. The first catalyst includes a first carrier in which a fraction of an amount of NH | 08-30-2012 |
| 208028000 | Separation of paraffin from oil (e.g., dewaxing) | 5 |
| 20100147741 | High activity MTT framework type molecular sieves - A process is described of producing an MTT framework type molecular sieve by crystallizing a mixture capable of forming said molecular sieve, wherein the mixture comprises sources of alkali or alkaline earth metal (M), an oxide of trivalent element (X), an oxide of tetravalent element (Y), water and a directing agent (R) of the formula (CH | 06-17-2010 |
| 20100181229 | HYDROISOMERIZATION CATALYST, METHOD OF DEWAXING HYDROCARBON OIL, PROCESS FOR PRODUCING BASE OIL, AND PROCESS FOR PRODUCING LUBE BASE OIL - A hydroisomerization catalyst according to the present invention is obtained by calcining a catalyst composite including an ion-exchanged molecular sieve or a calcined material thereof which is obtained by performing ion exchange of a molecular sieve containing an organic template in a solution containing a cation species and using water as a main solvent and at least one metal which is selected from a group consisting of metals belonging to Groups 8-10 of the Periodic Table of the Elements, molybdenum, and tungsten supported on the ion-exchanged molecular sieve or a calcined material thereof. | 07-22-2010 |
| 208030000 | Separation of residual oil from wax (i.e., deoiling) | 1 |
| 20100126906 | Process For Recovering Solvent From Ashphaltene Containing Tailings Resulting From A Separation Process - A process for recovering paraffinic solvent from tailings produced in the treatment of bitumen froth comprising introducing the tailings into a tailings solvent recovery unit (TSRU), the TSRU having internals, and distributing the tailings over the internals. An inert gas or steam is then introduced below the internals and above the liquid pool for enhancing the vaporization of the contained solvent. Solvent is vaporized from asphaltene agglomerates. In one embodiment, the process is affected in the absence of mechanical means used to substantially break up asphaltene agglomerates or to prevent the agglomeration of asphaltene. In another aspect, the process comprises introducing the tailings into a first TSRU as described above and then into a second TSRU operated at a lower pressure. In another aspect, internals are optionally present and steam or inert gas is injected in the liquid pool. | 05-27-2010 |
| 208033000 | Solvent dewaxing | 1 |
| 208035000 | With chilling by evaporation of solvent | 1 |
| 20100065469 | METHOD FOR ON-LINE MONITORING OF WAX CRYSTALLIZATION - The determination of wax crystal particle size and population is used to monitor the performance of wax crystallizers used in lubricant oil processing using solvent dewaxing. The wax crystal particle size is monitored using online measurements. The information obtained from on-line monitoring is then used to control crystallization in the dewaxing equipment in order to optimize performance of the dewaxing units. | 03-18-2010 |
| 208037000 | Chilling | 1 |
| 208038000 | With filtering | 1 |
| 20110083995 | Method for haze mitigation and filterability improvement base stocks - The present invention is a process for removing waxy haze from and improving the filterability of base stocks including heavy mineral oil base stocks, gas-to-liquids (GTL) and hydrodewaxed or hydroisomerized waxy feed basestocks by filtering the waxy haze causing particles out of the base stock employing a filter characterized by a high surface area of pores accessible to the haze wax particles which have particles dimensions of no more than about 5 microns. | 04-14-2011 |
