| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 208263000 | Organic acid or phenol contaminant removal | 10 |
| 20080197052 | DEVICES AND METHODS FOR SELECTIVE REMOVAL OF CONTAMINANTS FROM A COMPOSITION - The present invention relates to devices and methods for selectively removing contaminants from a crude product mixture. In an embodiment, the invention includes a method for removing free organic acids from a crude product mixture including contacting the crude product mixture with a metal oxide substrate, the metal oxide substrate having properties sufficient to bond with free organic acids in the crude product mixture, thereby removing free organic acids and forming a refined product mixture, and separating the refined product mixture from the metal oxide substrate. In an embodiment, the invention includes a device for removal of free organic acids from a crude product mixture including a first housing defining an interior volume, an input port, and an output port, and metal oxide media disposed within the first housing, the metal oxide media comprising a metal oxide selected from the group consisting of zirconia, alumina, hafnia, and titania. Other embodiments are also described herein. | 08-21-2008 |
| 20090014358 | Process for the Removal of Oxygenates From a Gaseous Stream - The present invention relates to a process for the removal of oxygenates from a gaseous stream also comprising carbon dioxide, said process comprising: a) providing a first gaseous stream comprising one or more mono-olefin(s), at least 100 ppm (by weight) of one or more oxygenates and at least 0.1 wt % carbon dioxide, and b) treating the first gaseous stream to produce a second gaseous stream comprising one or more mono-olefin(s) and at least 01 wt % carbon dioxide with reduced oxygenate content, wherein said treating comprises contacting the first gaseous stream with a first aqueous stream and with a first liquid hydrocarbon stream, and c) subsequently treating the second gaseous stream to remove the carbon dioxide therein. | 01-15-2009 |
| 20100051510 | MAGNETIC NANOPARTICLE COMPLEX - A magnetic nanoparticle complex includes a magnetic nanoparticle; and a ligand associated with the magnetic nanoparticle, the ligand including a functional group capable of combining with an acid component or a conjugate base of the acid component, in an oil. A method for preparing a magnetic nanopartide complex, includes preparing a pre-ligand having at least one amino group and at least one carbamate group or dithiocarbamate group; associating the pre-ligand with a magnetic nanoparticle to form a magnetic nanoparticle-ligand complex; and modifying the ligand to form a modified ligand having a functional group capable of combining with an acid component in an oil or a conjugate base of the acid component. | 03-04-2010 |
| 20100155304 | TREATMENT OF HYDROCARBONS CONTAINING ACIDS - The invention relates to a method of treating a liquid hydrocarbon (e.g. heavy oil, bitumen, etc.) containing naphthenic acids or other corrosive acids in order to partially or fully convert such acids into non-corrosive compounds. The method comprises adding an alkylating agent to the hydrocarbon, bringing the hydrocarbon into contact with an aqueous liquid containing an alkaline compound and a phase transfer catalyst to form an immiscible two-phase system, maintaining the contact to allow conversion of the naphthenic acids to non-corrosive oil-soluble esters, and separating the aqueous phase from the liquid hydrocarbon. Naphthenic acids are highly corrosive to plant and equipment and the method enables them to be converted to non-corrosive compounds in an economic manner. | 06-24-2010 |
| 20110259798 | PROCESS - Process for reducing the concentration of water-soluble carboxylic acids in a hydrocarbonaceous mixture which process comprises (i) taking a sample from the hydrocarbonaceous mixture and extracting the water-soluble carboxylic acids from the sample, (ii) subjecting the extracted water-soluble carboxylic acids to chromatography, (iii) calculating the concentration of water-soluble carboxylic acids in the hydrocarbon mixture based on the chromatography results, and (iv) reducing the concentration of water-soluble carboxylic acids in the hydrocarbonaceous mixture. | 10-27-2011 |
| 20120074042 | PROCESS FOR REDUCING THE TOTAL ACID NUMBER OF A HYDROCARBON FEED - Disclosed are embodiments relating to a process for reducing the total acid number of a hydrocarbon feed by contacting the feed with a metal titanate catalyst having an MTiO | 03-29-2012 |
| 20120132568 | METHOD FOR REDUCING THE NAPHTHENIC ACIDITY OF PETROLEUM FEEDSTOCKS, AND USE THEREOF - The invention relates to a method for reducing the naphthenic acidity of a petroleum feedstock having a neutralization index of 0.5 to 10 mg of KOH/g and a water content lower than 0.2 wt %, wherein said method comprises contacting the petroleum feedstock with a compound selected from the oxides, hydroxides and alkoxides of an HA group alkaline earth metal, the contact being carried out at a temperature lower than or equal to 150° C. The implementation of the method according to the invention, and in particular in the absence of water, makes it possible to reduce the naphthenic acidity and to prevent the formation of naphthenate salts that may subsequently reform naphthenic acids. | 05-31-2012 |
| 20120145601 | MAGNETIC NANOPARTICLE COMPLEX - A magnetic nanoparticle complex includes a magnetic nanoparticle; and a ligand associated with the magnetic nanoparticle, the ligand including a functional group capable of combining with an acid component or a conjugate base of the acid component, in an oil. A method for preparing a magnetic nanoparticle complex, includes preparing a pre-ligand having at least one amino group and at least one carbamate group or dithiocarbamate group; associating the pre-ligand with a magnetic nanoparticle to form a magnetic nanoparticle-ligand complex; and modifying the ligand to form a modified ligand having a functional group capable of combining with an acid component in an oil or a conjugate base of the acid component. | 06-14-2012 |
| 20130037448 | PROCESS FOR REDUCING THE TOTAL ACID NUMBER IN REFINERY FEEDSTOCKS - A process is described for reducing the total acid number of a refinery feedstock. In one embodiment, refinery feedstock containing naphthenic acids is contacted with an effective amount of solid catalyst in the presence of an aqueous caustic base, wherein the caustic base is sodium hydroxide or potassium hydroxide, for a period of time sufficient to neutralize at least a portion of the naphthenic acids in the feedstock. Thereafter, the aqueous phase is separated from the neutralized refinery feedstock. In another embodiment catalyst is pretreated with a caustic base solution and contacted with refinery feedstock to reducing the total acid number. | 02-14-2013 |
| 20150068954 | ALKALINE SOLUTION CONTACT PROCESS AND APPARATUS RELATING THERETO - One exemplary embodiment can be a process for contacting an alkaline solution with kerosene or diesel. The process can include providing a stream of kerosene or diesel and at least one of a naphthenic acid and a salt thereof, with an additional alkaline solution to a prewash vessel, forming an emulsion interface between a kerosene or diesel phase and an alkaline phase in the prewash vessel, controlling an amount of the emulsion interface by withdrawing at least a portion of the emulsion interface between the two phases, and adding an acid to a withdrawn emulsion. | 03-12-2015 |
