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Class 208/179 - Purifying used oil


Subclass of Class 208 - Mineral oils: processes and products
Definition: Processes for treating used mineral oils to render them
No. of patents: 145
Last issue date: 01/03/2012


1        
NumberTitleIssue Date
8088275Reconditioning process for used hydrocarbon based stimulation fluid
A process treats a fluid stream of used fracturing fluid containing contaminants and forms a reconditioned fluid stream. Contaminants are removed by the combination of distillation, electrostatic agglomeration, decanting, and filtration or by distillation and option...
01/03/2012
7807047Reconditioning process for used hydrocarbon based stimulation fluid
A process treats a fluid stream of used fracturing fluid containing contaminants and forms a reconditioned fluid stream. Contaminants are removed by the combination of distillation, electrostatic agglomeration, decanting, and filtration. Optionally, the filtered flu...
10/05/2010
7662274Methods of removing contaminants from used oil
In a method of removing acidic compounds, color, and polynuclear aromatic hydrocarbons, and for removing or converting hydrocarbons containing heteroatoms from used oil distillate, phase transfer catalysts are employed to facilitate the transfer of inorganic or orga...
02/16/2010
7378012Method for reforming lubricating oil used in lubricating an engine with a sliding region
A method for reforming a lubricating oil which includes holding stably a container (6) containing a lubricating oil (5) on a stand (4) being insulated from the earth with four high-voltage insulators (3), and applying an electrostatic pot...
05/27/2008
7341656Continuous oxidation and distillation process of heavier hydrocarbon materials
The present invention provides a way to process heavier hydrocarbons in a relatively low cost and low pressure process using a combination of superheated steam and at least one reaction gas to i) promote oxidation and thermal reaction of heavier hydrocarbons, while ...
03/11/2008
7293568Aqueous solutions of silicon metal and methods of making and using same
The present invention generally relates to a formulation created by reacting sodium hydroxide, water, and silicon metal which has unique properties and many uses. The instant invention is further directed to methods of producing and using such formulations. ...
11/13/2007
7288685Production of olefins from biorenewable feedstocks
A process for producing olefins from biorenewable feedstocks has been developed. The process comprises first pretreating the feedstock, e.g. vegetable oil, to remove contaminants such as alkali metals and then cracking the purified feedstock in a fluidized catalytic...
10/30/2007
7267760Method of removing contaminants from used oil
In a method of removing acidic compounds, color, and polynuclear aromatic hydrocarbons, and for removing or converting hydrocarbons containing heteroatoms from used oil distillate, phase transfer catalysts are employed to facilitate the transfer of inorganic or orga...
09/11/2007
7261808Upgrading of pre-processed used oils
A process to further upgrade a pre-processed used lubricating oil by: (a) contacting the partially upgraded used oil in the presence of hydrogen with a hydrodemetallization catalyst; (b) contacting the effluent of step (a) in the presence o...
08/28/2007
7255785Apparatus and process for treatment of waste oils
An apparatus and a process for reclaiming fuel oils from waste oils. The apparatus and process is characterized in that waste oils are thermally cracked by combination of high pressure and vacuum in a sequence at high temperature. However, rapid thermal cracking is ...
08/14/2007
7241377Salt bath refining
A process for heating thermally unstable or difficult to heat liquid feeds, e.g., used lubricating oil (ULO) to dehydrate and/or recover distillable components therefrom, is disclosed. The liquid feed is heated by direct contact heat exchange with molten salt, prefe...
07/10/2007
7232935Process for producing a hydrocarbon component of biological origin
The invention relates to a process for producing a hydrocarbon component of biological origin. The process comprises at least two steps, the first one of which is a HDO step and the second one is an isomerization step operated using the counter-current flow principl...
06/19/2007
7226533Process for re-refining used oils by solvent extraction
A process to re-refine used petroleum oils by extraction with aliphatic solvents, wherein after eliminating the extract solvent, the process consists of the following treatments, (a) flash, continuous vaporization, at atmospheric pressure or near atmospheric pressur...
06/05/2007
7208554Polyoxyalkylene phosphonates and improved process for their synthesis
A process for preparing polyoxyalkylene phosphonates in high yield and purity without extensive isolation procedures. The process also enables hydroxy terminated polyoxyalkylene phosphonates to be produced with their attendant high aqueous solubility and the availab...
04/24/2007
7150822Five degrees for separation
A process for heating thermally unstable or difficult to heat liquid feeds, e.g., used lubricating oil (ULO) to dehydrate and/or recover distillable components therefrom, is disclosed. The liquid feed is heated by direct contact heat exchange with molten metal, pref...
12/19/2006
7089762Multi-stage vacuum distilling, cooling and freezing processes and apparatuses for solution separation and seawater desalination
Multi-stage vacuum distilling, cooling, and freezing processes for solution separation and seawater desalination are implemented through multi-stage vacuum distilling, cooling, and freezing systems. The systems are set to their initial state for implementing constan...
08/15/2006
7045038Process for treating waste oil
There is disclosed a burnable used oil fuel product by the process comprising: (a) obtaining a used oil sample having at least 1% (by weight) aqueous substances; (b) heating the used oil sample to a temperature of ...
05/16/2006
6929737Method of removing contaminants from petroleum distillates
In a method of removing acidic compounds, color, and polynuclear aromatic hydrocarbons, and for removing or converting hydrocarbons containing heteroatoms from petroleum distillates, phase transfer catalyst is employed to facilitate the transfer of inorganic or orga...
08/16/2005
6821413Method and apparatus for continuous separation and reaction using supercritical fluid
A method for the continuous process of fluids is based on mixing the fluid with a supercritical fluid. The mixing of the two fluids may be accomplished using either a co-flow or counter-flow process. The process focuses on the difference in the solubilities of the d...
11/23/2004
6729145Process plant
A process plant (1) for handling combustibles fluids, for example an oil production plant in which gaseous hydrocarbons are separated from oil and in which surplus gases or residual gases from uncontrolled build-ups of gas pressure in the process escape throu...
05/04/2004
6712954Method for reprocessing waste oils, base oils obtained according to said method and use thereof
The invention relates to a method for reprocessing waste oils and producing high-grade base oils, whereby waste oil is treated by means of distillation, thin-film evaporation in a high vacuum, optional fractionation for separation into layers of different viscositie...
03/30/2004
6589417Thermal 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
6485632Apparatus and method for reclaiming waste oil for use as fuel for a diesel engine
An apparatus and method for reclaiming waste oil for use as fuel for a diesel engine. A mixing tank is provided, along with a waste oil transfer pump for supplying waste oil to the mixing tank, a fuel proportioning pump for supplying a proportional amount...
11/26/2002
6457563Arrangement in a circulation lubrication system
An arrangement in a circulation lubrication system include a lubricating oil tank, pressure pipe lines for supplying oil to parts to be lubricated, return pipe lines for returning the oil from the parts to be lubricated to the oil tank, and a mechanism co...
10/01/2002
6447672CONTINUOUS PLURAL STAGE HEATED VAPOR INJECTION PROCESS FOR RECOVERING LUBE OIL BASE STOCKS FROM USED MOTOR OIL FORMULATIONS, AND ASPHALT BLEND COMPOSITIONS CONTAINING USED MOTOR OIL BOTTOMS FROM SAID PROCESS
A continuous, hot vapor injection process and apparatus is provided for recovering lube oil base stocks from used lubricating oil containing distillable liquid hydrocarbons and water. Also disclosed is an asphalt blend composition containing an asphalt co...
09/10/2002
6440298Method of reclaiming waste oil
An apparatus and a method are provided reclaiming a useful oil product from waste oil, such as used lubricating oil. The apparatus comprises an oil feed means, a boiler, a heater and a separating means. The heater is used to heat the waste oil in the boil...
08/27/2002
6402937"Pumped" recycle vapor
A process for the direct contact heating and vaporization of UMO is disclosed. A superheated, but condensable, vapor heats and vaporizes distillable liquid hydrocarbons from a waste motor oil stream, producing an overhead vapor fraction of injected superh...
06/11/2002
6402938Vaporization of used motor oil with non-hydrogenating recycle vapor
Used Motor Oil is re-refined by direct injection of a superheated, non-hydrogenating recycle vapor. The process operates at low pressures, preferably from atmospheric--10 atmospheres absolute. Preferably a significant amount of the energy required to vapo...
06/11/2002
6398948Method of removing contaminants from used oil
In a method of removing acidic compounds, color, and polynuclear aromatic hydrocarbons, and for removing or converting hydrocarbons containing heteroatoms from used oil distillate, phase transfer catalysts are employed to facilitate the transfer of inorga...
06/04/2002
6395166Method of reclaiming used motor oil for further use
A method of reclaiming used motor oil for further use is disclosed comprising (a) admixing used impurity laden motor oil with an effective amount of acetone as a flocculating agent and an effective amount of a second ketone as a wetting agent thereby form...
05/28/2002
6372122Method of removing contaminants from petroleum distillates
In a method of removing acidic compounds, color, and polynuclear aromatic hydrocarbons, and for removing or converting hydrocarbons containing heteroatoms from petroleum distillates, phase transfer catalyst is employed to facilitate the transfer of inorga...
04/16/2002
6319394Method of removing contaminants from petroleum distillates
In a method of removing acidic compounds, color, and polynuclear aromatic hydrocarbons, and for removing or converting hydrocarbons containing heteroatoms from petroleum distillates, phase transfer catalyst is employed to facilitate the transfer of inorga...
11/20/2001
6287455Purifier for lubricating oil or hydraulic oil
The present invention provides a means of removing water, antifreeze and fuel from lubricating or hydraulic oil by evaporating these impurities and venting them out of the purifier. The oil is heated by heat of an exposed horizontal heating wand within th...
09/11/2001
6270657Asphalt blend compositions containing used motor oil and asphalt pavement compositions containing said asphalt blend compositions
An asphalt blend composition containing an asphalt component and a bottoms fraction from a used motor vaporization process of the above process, and a pavement composition comprising aggregate and the asphalt blend composition. The process comprises direc...
08/07/2001
6270678Method for treating alkaline waste water
The present invention relates to a method of treating alkaline waste water originating from washing spent oil which has undergone an alkaline treatment with water and which contains organic material. This method can produce water which can be discharged i...
08/07/2001
6258332Apparatus and method for collecting and recycling a petroleum by-product
The present invention provides for an apparatus and method for collecting and recycling a petroleum by-product such as hydrocarbon residue from crude oil. The apparatus comprises a container having a top, bottom, and sides, an internal heating element, an...
07/10/2001
6238551Method of removing contaminants from petroleum distillates
In a method of removing acidic compounds, color, and polynuclear aromatic hydrocarbons, and for removing or converting hydrocarbons containing heteroatoms from petroleum distillates, phase transfer catalyst is employed to facilitate the transfer of inorga...
05/29/2001
6191077Method of cleaning liquid cooling lubricants
A method of cleaning mineral-oil-based liquid cooling lubricants in which the cooling lubricants, which are continuously circulated in metal-working plants, are cleaned by a deposition filtration system. A continuous or discontinuous inoculation or introd...
02/20/2001
6132596Process and apparatus for the treatment of waste oils
The present invention is directed to a process and apparatus for the reclaiming and re-refining of waste oils. The process comprises raising a temperature of a feed mixture of fresh waste oil and a recycled non-volatile residue to a range of 400° C. to 4...
10/17/2000
6126843Process for the antimicrobial treatment of cooling lubricants
A process for treating cooling lubricants to prevent attack by microorganisms using crospovidone-iodine as biocidal substance, wherein the cooling lubricant to be treated is brought into contact with a filter cake which consists essentially of particulate...
10/03/2000
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