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| Number | Title | Issue Date |
| 7373276 | Quantitative evaluation of emulsion stability based on critical electric field measurements A method for quantitative evaluation of emulsion stability using Critical Electric Field (CEF) determinations over a range of conditions, such as a range of temperatures, demulsifier compositions, or demulsifier concentrations. The method includes determining the CE... | 05/13/2008 |
| 7316734 | Volatile organic compound treatment apparatus A volatile organic compound treatment apparatus including an adsorber coming into contact with a gas to be treated and adsorbing volatile organic compounds; a plurality of pairs of electrodes, divided into a plurality of groups, which generate electric discharge so ... | 01/08/2008 |
| 6937686 | Iron control in BWR's with sacrificial electrodes Method for controlling the level of iron in feedwater of a BWR wherein an iron-containing sacrificial electrode in placed contact with the feed water dissolution of the electrode is induced at a rate which provides a desired level of iron in the feedwater. ... | 08/30/2005 |
| 6576107 | Electrostatic filter for dielectric fluid An electrostatic filter for removing contaminants from a dielectric fluid when the filter comprises a plurality of electrically conductive plates positioned in a housing and having filter media disposed between the plates so that during the operation of t... | 06/10/2003 |
| 6284118 | Electrostatic filter for dielectric fluid An electrostatic filter for removing contaminants from a dielectric fluid when the filter comprises a plurality of electrically conductive plates positioned in a housing and having filter media disposed between the plates so that during the operation of t... | 09/04/2001 |
| 5785834 | Electrostatic filter An electrostatic filter utilizes two separate filter cartridges in a parallel flow configuration with respect to incoming dielectric fluid containing particulates. Each cartridge is connected to opposite sides of a high voltage power supply, resulting in ... | 07/28/1998 |
| 5630926 | Electrostatic filter An electrostatic filter utilizes two separate filter cartridges in a parallel flow configuration with respect to incoming dielectric fluid containing particulates. Each cartridge is connected to opposite sides of a high voltage power supply, resulting in ... | 05/20/1997 |
| 5308586 | Electrostatic separator using a bead bed Beads for use in beds in electrostatic separators for the separation of suspended particles from hydrocarbon oils. Electrostatic separators employing a bed of these beads have the capacity to remove as much as 99 weight percent of contaminating particles,... | 05/03/1994 |
| 4948515 | Filter for liquid and method of filtering liquid A method for filtering liquids having a dielectric constant less than 10 is disclosed. The method includes the step of filtering a liquid through a porous layer of an electret, the electret consisting of a fibrous sheet having a surface charge density of ... | 08/14/1990 |
| 4702817 | Removing haze from hydrocarbon oil mixture boiling in the lubricating oil range Haze in lube oil is firstly precipitated as wax and ice crystals to form a slurry which is introduced, through inlet (18), into a separation vessel (15) containing a bed of packed aggregate (20) which preferably comprises wax balls, or asphalt or ice chun... | 10/27/1987 |
| 4634510 | Clarifying a contaminated fluid In the treatment of a contaminated liquid, an additive, such as finely divided adsorbent particles, is introduced into the liquid so that it combines physically, chemically or electrically with the contaminant to form a dispersion suspended in the liquid.... | 01/06/1987 |
| 4629546 | Method and apparatus for centrifugal separation of dispersed phase from a continuous liquid phase In solvent de-waxing of lube oil, a stream (3) of chilled waxy oil and solvent is introduced into a centrifugal separation device (2) which separates a quantity of wax from the waxy oil and solvent. The dewaxed oil (DWO) and solvent leaving the centrifuge... | 12/16/1986 |
| 4627901 | Separating wax from hydrocarbon mixture boiling in the lubricating oil range In order to separate wax from lubricating oil, it is necessary both to introduce free excess charge which is net positive or net negative into the wax-laden oil, preferably by charge injection, and to reduce the solubility for the wax (for example by cool... | 12/09/1986 |
| 4624763 | Separation of dispersed phase from phase mixture In order to separate dispersed contaminant phase from a phase mixture comprising the contaminant phase dispersed in a continuous background fluid phase (for example a water-in-oil emulsion), net unipolar charge is injected into the emulsion with an electr... | 11/25/1986 |
| 4624764 | Separation of dispersed phase from continuous fluid phase Separation of dispersed phase (e.g., solid, gel, liquid or gas contiminant) from a continuous fluid background phase (liquid or gas) is achieved by injecting free charge into the phase mixture, which both induces an electric field within the mixture and e... | 11/25/1986 |
| 4622118 | Method and apparatus for separating wax/water from hydrocarbon oil mixture boiling in the lubricating oil range In order to separate wax particles and/or water droplets from lubricating oil, free excess electric charge which is net positive or net negative is introduced into the wax/water-laden oil, preferably by charge injection. Wax particle/water droplet agglome... | 11/11/1986 |
| 4601799 | Electric field oil filter and method of filtering The filter assembly removes minute soot particles from diesel engine oil during service. It may be used to remove other minute particles from various oils. A charged metal screen, with a mesh size preferably in the range of 2 to 4 holes per linear inch, c... | 07/22/1986 |
| 4581112 | Method and apparatus for separating wax/water from hydrocarbon mixture boiling in the lubricating oil range For separating wax particles and/or water droplets from a hydrocarbon mixture boiling in the lubricating oil range, net positive or net negative free excess electric charge is introduced, e.g. by a charge injector (44), into the wax/water-laden oil mixtur... | 04/08/1986 |
| 4399041 | Process for particulate removal from coal liquids Suspended solid particulates are removed from liquefied coal products by first subjecting such products to hydroclone action for removal in the underflow of the larger size particulates, and then subjecting the overflow from said hydroclone action, compri... | 08/16/1983 |
| 4372837 | Radial flow electrofilter A radial flow electrofilter having a plurality of parallel planar horizontal electrodes. The filter may be provided with backflush means, in which case the filter medium preferably consists of non-deformable particles, or else a removable filter pack, pre... | 02/08/1983 |
| 4302310 | Radial flow electrofilter A radial flow electrofilter having a plurality of parallel planar horizontal electrodes. The filter may be provided with backflush means, in which case the filter medium preferably consists of non-deformable particles, or else a removable filter pack, pre... | 11/24/1981 |
| 4285805 | Time-delay process and control system for electrostatic filter In an electrostatic filtering process, solids are removed from a solids-containing liquid using an electrostatic filter and the filter is backflushed to remove collected solids, after which power is restored to the filter for a finite time before resumpti... | 08/25/1981 |
| 4248686 | Cross flow electrofilter and method A filter for clarifying carbonaceous liquids containing finely divided solid particles of, for instance, unreacted coal, ash and other solids discharged from a coal liquefaction process is presented. The filter includes two passageways separated by a poro... | 02/03/1981 |
| 4139441 | Electrofiltration with bi-directional potential pretreatment Electrofiltration, in which solids are removed from a liquid by adherence to surfaces of bodies maintained in an electrostatic field when the liquid is passed through the field, is improved by subjecting the liquid to pretreatment with an electrostatic fi... | 02/13/1979 |
| 4059498 | Radial flow electrostatic filter A filter for separating finely divided solid particles that may be electrically conducting from electrically nonconducting liquids has means for directing the liquid to be filtered in a radial flow pattern through a filter bed of glass beads to which a hi... | 11/22/1977 |
| 4022675 | Filtering process A process for separating finely divided, electrically conductive materials from hot liquid hydrocarbon feed stock for a fixed bed catalytic process such as hydrodesulfurization of gas oils or heavier petroleum fractions or hydrocracking. The feed stock is... | 05/10/1977 |
| 4009089 | Filtering process A process for separating finely divided, electrically conductive materials from hot liquid hydrocarbons. The process is particularly valuable in the treatment of a liquid hydrocarbon feed stock for a fixed bed catalytic process such as hydrodesulfurizatio... | 02/22/1977 |
